Datasheet Sound Processor with Built-in 3-band Equalizer BD37544FS Key Specifications General Description BD37544FS is a sound processor with built-in 3-band equalizer for car audio. The functions are stereo input selector (which can switch single and GND isolation), input-gain control, main volume, super bass, 5ch fader volume, LPF/HPF for subwoofer, and mixing input. Moreover, “Advanced switch circuit”, which is an original ROHM technology, can reduce various switching noise (ex. No-signal, low frequency like 20Hz & large signal inputs). Also, “Advanced switch” makes control of microcomputer easier, and can construct a high quality car audio system. Features Reduced switching noise of input gain control, mute, main volume, fader volume, bass, middle, treble, super bass, mixing by using advanced switch circuit. Built-in differential input selector that can make various combination of single-ended / differential input. Built-in ground isolation amplifier inputs, which is ideal for external stereo input. Built-in input gain controller reduces switching noise for volume of a portable audio input. Decreased number of external components due to built-in 3-band equalizer filter, LPF for subwoofer, and HPF. It is possible to control Q, GV, fO of 3-band equalizer and fC of LPF/HPF through I2C BUS control. It is possible to adjust the gain of the bass, middle, and treble up to ±20dB with 1 dB step gain adjustment. It is equipped with output terminals for Subwoofer. Moreover, the stereo signal output of the front and rear can also be chosen by the I2C BUS control. Built-in mixing input and mixing attenuator. Energy-saving design resulting in low-current consumption is achieved by utilizing the Bi-CMOS process. It has the advantage in quality over scaling down the power heat control of the internal regulators. Input terminals and output terminals are organized and separately laid out to keep the signal flow in one direction which results in simpler and smaller PCB layout. It is possible to control the I2C BUS by 3.3V / 5V. Power Supply Voltage Range: Circuit Current (No Signal): Total Harmonic Distortion: THD+N1 THD+N2 Maximum Input Voltage: Cross-talk Between Selectors: Volume Control Range: Output Noise Voltage: VNO1 VNO2 Residual Output Noise Voltage: Operating Temperature Range: Package 7.0V to 9.5V 38mA (Typ) 0.001% (Typ) 0.002% (Typ) 2.3Vrms(Typ) -100dB(Typ) +15 dB to -79dB 3.8µVrms(Typ) 4.8µVrms(Typ) 1.8µVrms(Typ) -40°C to +85°C W(Typ) x D(Typ) x H(Max) SSOP-A32 13.60 mm x 7.80mm x 2.01mm . . Applications It is optimal for car audio systems. It can also be used for audio equipment of mini Compo, micro Compo, TV, etc. 〇Product structure : Silicon monolithic integrated circuit .www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111 • 14 • 001 〇This product has no designed protection against radioactive rays 1/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Typical Application Circuit BD37544FS 単位 R : [Ω] C : [F] Pin Configuration TOP VIEW A1 1 32 FIL A2 2 31 GND B1 3 30 SDA B2 4 29 SCL C1 5 28 VCC C2 6 27 OUTF1 DP1 7 26 OUTF2 DN 8 25 OUTR1 DP2 EP1 9 24 OUTR2 10 23 OUTS1 EN 11 22 OUTS2 EP2 12 21 N.C. MIN 13 20 SBC2 SBC1 14 19 SBA2 SBA1 15 18 SBB2 SBB1 16 17 SBBIAS Pin Descriptions Pin No. Pin Name Description Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A1 A2 B1 B2 C1 C2 DP1 DN DP2 EP1 EN EP2 MIN SBC1 SBA1 A input terminal of 1ch A input terminal of 2ch B input terminal of 1ch B input terminal of 2ch C input terminal of 1ch C input terminal of 2ch D positive input terminal of 1ch D negative input terminal D positive input terminal of 2ch E positive input terminal of 1ch E negative input terminal E positive input terminal of 2ch Mixing input terminal SuperBass setting terminal of 1ch SuperBass setting terminal of 1ch 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Pin Name SBBIAS SBB2 SBA2 SBC2 N.C. OUTS2 OUTS1 OUTR2 OUTR1 OUTF2 OUTF1 VCC SCL SDA GND 16 SBB1 SuperBass setting terminal of 1ch 32 FIL www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 2/37 Description SuperBass bias terminal SuperBass setting terminal of 2ch SuperBass setting terminal of 2ch SuperBass setting terminal of 2ch No connection Subwoofer output terminal of 2ch Subwoofer output terminal of 1ch Rear output terminal of 2ch Rear output terminal of 1ch Front output terminal of 2ch Front output terminal of 1ch Power supply terminal I2C Communication clock terminal I2C Communication data terminal GND terminal VCC/2 terminal TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Block Diagram 32 31 VCC/2 GND 30 29 28 27 26 25 24 23 22 21 20 18 19 17 I2C BUS LOGIC VCC/2 ATT★ Fader★ Fader★ Fader★ Fader★ Fader★ Fader ■Fader Gain:+15dB to -79dB/1dB step step Gain:+15dB~-79dB/1dB ★no pop noise ■LPF fc=55/85/120/160Hz ■HPF fc=55/85/120/160Hz ■ATT Gain: +7dB to -79dB/1dBstep step Gain:+7dB~-79dB/1dB ★no pop noise ■Super Bass ★no pop noise ■3 Band P-EQ (Tone control) Gain: +20dB to -20dB/1dB step Gain:+20dB~-20dB/1dB step ★no pop noise ・Bass:f0=60/80/100/120Hz Q=0.5/1.0/1.5/2.0 ・Meddle:f0=500/1k/1.5k/2.5kHz Q=0.75/1/1.25/1.5 ・Treble:f0=7.5k/10k/12.5k/15kHz Q=0.75/1.25 ■Volume Gain: +15dB to -79dB/1dB step Gain:+15dB~-79dB/1dB step ★no pop noise ■Input Gain Gain:+20dB~0dB/1dB Gain: +20dB to -0dB/1dBstep step ★no pop noise LPF HPF ★Super Bass ★3 Band P-EQ (Tone control) ★Volume/Mute ★Input Gain Input selector (3 single-end and 2 stereo ISO) BufferdGND ISO amp BufferdGND ISO amp 1 2 3 4 www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 5 6 7 8 3/37 9 BufferdGND ISO amp BufferdGND ISO amp 10 11 12 13 14 15 16 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Absolute Maximum Ratings (Ta=25°C) Parameter Symbol Rating Unit Power Supply Voltage VCC 10.0 V Input Voltage VIN VCC+0.3 to GND-0.3 V Power Dissipation Pd 0.95 (Note 1) W Tstg -55 to +150 °C Storage Temperature (Note 1) When mounted on the standard board (70 x 70 x 1.6 mm3), derate by 7.6mW/°C for Ta above 25°C. Thermal resistance θja = 131.6(°C/W) Material : A FR4 grass epoxy board(3% or less of copper foil area) Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over the absolute maximum ratings. Recommended Operating Conditions Parameter Symbol Min Typ Max Unit Power Supply Voltage VCC 7.0 - 9.5 V Temperature Topr -40 - +85 °C Electrical Characteristics GENERAL BLOCK (Unless specified, Ta=25°C, VCC=8.5V, f=1kHz, VIN=1Vrms, Rg=600Ω, RL=10kΩ, A1 input, Input gain 0dB, Mute OFF, Volume 0dB, Tone control 0dB, Loudness 0dB, LPF OFF, HPF OFF, Mixing OFF, Fader 0dB) Limit Parameter Symbol Typ Max Conditions Circuit Current (No Signal) IQ - 38 48 mA No signal Voltage Gain GV -1.5 0 +1.5 dB GV=20log(VOUT/VIN) Channel Balance CB -1.5 0 +1.5 dB CB = GV1-GV2 THD+N1 - 0.001 0.05 % THD+N2 - 0.002 0.05 % VNO1 - 3.8 15 μVrms VNO2 - 4.8 15 μVrms Residual Output Noise Voltage* VNOR - 1.8 10 μVrms Cross-talk Between Channels * CTC - -100 -90 dB RR - -70 -40 dB VOUT=1Vrms BW=400Hz-30KHz VOUT=1Vrms BW=400Hz-30KHz Rg = 0Ω BW = IHF-A Rg = 0Ω BW = IHF-A Fader = -∞dB Rg = 0Ω BW = IHF-A Rg = 0Ω CTC=20log(VOUT/VIN) BW = IHF-A f=1kHz VRR=100mVrms RR=20log(VCC IN/VOUT) Input Impedance(A, B,C) RIN_S 70 100 130 kΩ Input Impedance(D, E) RIN_D 175 250 325 kΩ Maximum Input Voltage VIM 2.1 2.3 - Vrms Cross-talk Between Selectors * CTS - -100 -90 dB CMRR 50 65 - dB Total Harmonic Distortion 1 (FRONT,REAR) Total Harmonic Distortion 2 (SUBWOOFER) Output Noise Voltage 1 (FRONT,REAR) * Output Noise Voltage 2 (SUBWOOFER) * Ripple Rejection INPUT SELECTOR Unit Min Common Ratio* Mode Rejection www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 4/37 VIM at THD+N(VOUT)=1% BW=400Hz-30KHz Rg = 0Ω CTS=20log(VOUT/VIN) BW = IHF-A XP1 and XN input XP2 and XN input CMRR=20log(VIN/VOUT) BW = IHF-A,[*X…D,E] TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS MIXING TREBLE MIDDLE BASS VOLUME MUTE INPUT GAIN BLOCK Electrical Characteristics - continued Limit Parameter Symbol Unit Min Typ Max Conditions Input gain 0dB VIN=100mVrms GIN=20log(VOUT/VIN) Input gain 20dB VIN=100mVrms GIN=20log(VOUT/VIN) Minimum Input Gain GIN_MIN -2 0 +2 dB Maximum Input Gain GIN_MAX 18 20 22 dB Gain Set Error GIN_ERR -2 0 +2 dB Mute Attenuation * GMUTE - -105 -85 dB Maximum Gain GV_MAX 13 15 17 dB Maximum Attenuation * GV_MIN - -100 -85 dB Attenuation Set Error 1 GV_ERR1 -2 0 +2 dB GAIN & ATT=+15dB to -15dB Attenuation Set Error 2 GV_ERR2 -3 0 +3 dB ATT=-16dB to -47dB Attenuation Set Error 3 GV_ERR3 -4 0 +4 dB ATT=-48dB to -79dB Maximum Boost Gain GB_BST 18 20 22 dB Maximum Cut Gain GB_CUT -22 -20 -18 dB Gain Set Error GB_ERR -2 0 +2 dB Maximum Boost Gain GM_BST 18 20 22 dB Maximum Cut Gain GM_CUT -22 -20 -18 dB Gain Set Error GM_ERR -2 0 +2 dB Maximum Boost Gain GT_BST 18 20 22 dB Maximum Cut Gain GT_CUT -22 -20 -18 dB Gain Set Error GT_ERR -2 0 +2 dB Input Impedance RIN_M 19 27 35 kΩ Maximum Input Voltage VIM_M 2.0 2.2 - Vrms Maximum Attenuation * GMX_MIN - -100 -85 dB Maximum Gain GMX_MAX 5 7 9 dB www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 5/37 GAIN=+20dB to +1dB Mute ON GMUTE=20log(VOUT/VIN) BW = IHF-A Volume = 15dB VIN=100mVrms GV=20log(VOUT/VIN) Volume = -∞dB GV=20log(V VOUT/VIN) BW = IHF-A Gain=+20dB f=100Hz VIN=100mVrms GB=20log (VOUT/VIN) Gain=-20dB f=100Hz VIN=2Vrms GB=20log (VOUT/VIN) Gain=-20dB to +20dB f=100Hz Gain=+20dB f=1kHz VIN=100mVrms GM=20log (VOUT/VIN) Gain=-20dB f=1kHz VIN=2Vrms GM=20log (VOUT/VIN) Gain=-20dB to +20dB f=1kHz Gain=+20dB f=10kHz VIN=100mVrms GT=20log (VOUT/VIN) Gain=-20dB f=10kHz VIN=2Vrms GT=20log (VOUT/VIN) Gain=-20dB to +20dB f=10kHz VIM at THD+N(VOUT)=1% BW=400Hz-30KHz MIX=OFF GMX=20log(VOUT/VIN) BW=INF-A ATT=+7dB GMX=20log(VOUT/VIN) TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS FADER / SUBWOOFER BLOCK Electrical Characteristics - continued Limit Parameter Symbol Unit Min Typ Max Conditions Fader=15dB VIN=100mVrms GF=20log(VOUT/VIN) Fader = -∞dB GF=20log(VOUT/VIN) BW = IHF-A Maximum Boost Gain GF_BST 13 15 17 dB Maximum Attenuation * GF_MIN - -100 -90 dB Gain Set Error GF_ERR -2 0 +2 dB GAIN=+1dB to +15dB Attenuation Set Error 1 GF_ERR1 -2 0 +2 dB ATT=-1dB to -15dB Attenuation Set Error 2 GF_ERR2 -3 0 +3 dB ATT=-16dB to -47dB Attenuation Set Error 3 GF_ERR3 -4 0 +4 dB ATT=-48dB to -79dB Output Impedance ROUT - - 50 Ω VIN =100mVrms Maximum Output Voltage VOM 2 2.2 - Vrms THD+N=1% BW=400Hz-30KHz VP-9690A(Average value detection, effective value display) filter by Matsushita Communication is used for * measurement. Phase between input / output is same. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 6/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Typical Performance Curves 20 10 0 0 2 4 6 8 10 1 1kHz 100Hz 0.1 0.1 0.01 0.01 0.001 0.001 10 Power Supply Voltage : VCC [V] VCC[V] Gain (dB) Bass Gain [dB] 3 Gain=0dB 1 0 -1 -2 -3 -4 100 1k 10k 100k 25 20 15 10 5 1 10 BASS GAIN : -20dB to +20dB /1dB step fO : 60Hz Q : 0.5 0 -5 -10 -15 -20 -25 10 Frequency (Hz) 100 1k 10k 100k Frequency [Hz] Figure 3. Gain vs Frequency www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 0.1 Figure 2. Total Harmonic Distortion vs Output Voltage 4 10 0.01 Vout (V) 5 -5 0.001 Output Voltage : VOUT [Vrms] Figure 1. Circuit Current (No Signal) vs Power Supply Voltage 2 1 10kHz Figure 4. Bass Gain vs Frequency 7/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 Vout 30 10 VIN [Vrms] Total Harmonic Distortion : THD+N [%] 40 THD+N (%) Iq[mA] Circuit Current (No Signal) : IQ [mA] 50 BD37544FS Typical Performance Curves – continued fO : 60/80/100/120Hz BASS GAIN : ±20dB Q : 0.5 10 5 0 -5 -10 Gain [dB] Gain [dB] 25 20 15 -15 -20 -25 10 100 1k 10k 25 20 15 10 5 Q : 0.5/1/1.5/2 BASS GAIN : ±20dB fO : 60Hz 0 -5 -10 -15 -20 -25 100k 10 100 Frequency [Hz] Middle Gain [dB] Gain [dB] fO : 500Hz Q : 0.75 100 1k 10k 100k 25 20 15 10 5 0 -5 -10 -15 -20 -25 fO : 500/1k/1.5k/2.5kHz MIDDLE GAIN : ±20dB Q : 0.75 10 Frequency [Hz] 100 1k 10k 100k Frequency [Hz] Figure 7. Middle Gain vs Frequency www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 100k Figure 6. Bass Q vs Frequency MIDDLE GAIN : -20dB to +20dB /1dB step 10 10k Frequency [Hz] Figure 5. Bass fo vs Frequency 25 20 15 10 5 0 -5 -10 -15 -20 -25 1k Figure 8. Middle fo vs Frequency 8/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS 25 20 15 10 5 0 -5 -10 -15 -20 -25 25 Q : 0.75/1/1.25/1.5 15 10 5 0 -5 -10 MIDDLE GAIN : ±20dB fO : 500Hz 10 100 1k 10k TREBLE GAIN:-20dB to +20dB /1dB step fO : 7.5kHz Q : 0.75 20 Treble Gain [dB] Gain (dB) Gain [dB] Typical Performance Curves – continued -15 -20 -25 100k 10 100 1k 10k 100k Frequency [Hz] Frequency [Hz] Frequency (Hz) Figure 9. Middle Q vs Frequency Figure 10. Treble Gain vs Frequency 25 25 0 -5 -10 Gain [dB] 10 10 5 Gain (dB) Gain [dB] Q : 0.75/1.25 TREBLE GAIN : ±20dB fO : 7.5kHz 20 15 fO : 7.5k/10k/12.5k/15kHz TREBLE GAIN : ±20dB Q : 0.75 20 15 5 0 -5 -10 -15 -15 -20 -20 -25 -25 10 100 1k 10k 10 100k Frequency [Hz] 1k 10k 100k Frequency [Hz] Frequency Figure 12. Treble Q (Hz) vs Frequency Figure 11. Treble fo vs Frequency www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 100 9/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Typical Performance Curves – continued 1000 Din-Audio Output Noise [µVrms] 出力雑音電圧 [uVrms] 出力雑音電圧[uVrms] Output Noise [µVrms] 1000 IHF-A 100 10 1 DIN-Audio 100 10 1 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 -20 -15 -10 -5 Volume Volume Gain[dB] Gain [dB] 0 5 10 15 20 Bass Gain Gain [dB] Bass [dB] Figure 14. Output Noise vs Bass Gain Figure 13. Output Noise vs Volume Gain 1000 DIN-Audio IHF-A 100 10 Output Noise [µVrms] 出力雑音電圧 [uVrms] 1000 出力雑音電圧 [uVrms] Output Noise [µVrms] IHF-A DIN-Audio IHF-A 100 10 1 1 -20 -15 -10 -5 0 5 10 15 20 Treble Gain Treble Gain[dB] [dB] -20 -15 -10 -5 0 5 10 15 20 Middle Gain[dB] [dB] Middle Gain Figure 16. Output Noise vs Treble Gain Figure 15. Output Noise vs Middle Gain www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 10/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Typical Performance Curves – continued 2.5 0 Output Voltage : VOUT [Vrms] 最大出力[Vrms] Gain [dB] Gain (dB) -10 -20 -30 -40 -50 -60 2.0 1.5 1.0 0.5 0.0 -70 10 100 1k 10k 100k Frequency [Hz] 100 1000 10000 RLOAD [ohm] 出力負荷[ohm] 100000 FigureFrequency 17. CMRR vs(Hz) Frequency Figure 18. Output Voltage vs RLOAD Figure 19. Advanced Switch 1 Figure 20. Advanced Switch 2 www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 11/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Timing Chart CONTROL SIGNAL SPECIFICATION (1) Electrical Specifications and Timing for Bus Lines and I/O Stages SDA tBUF tLOW tHD;STAT tF tR tSP SCL tHD;STA P tHD;DAT tHIGH tSU;DAT tSU;STAT tSU;STOT Sr S P Figure 21. I2C-bus Signal Timing Diagram Table 1 Characteristics of the SDA and SCL bus lines for I2C-bus devices (Ta=25°C, VCC=8.5V) Parameter Symbol SCL clock frequency Bus free time between a STOP and START condition Hold time (repeated) START condition. After this period, the first clock 3 pulse is generated 4 LOW period of the SCL clock 5 HIGH period of the SCL clock 6 Set-up time for a repeated START condition 7 Data hold time: 8 Data set-up time 9 Set-up time for STOP condition All values refer to VIH Min and VIL Max Levels (see Table 2). fSCL tBUF 1 2 Fast-mode I2C-bus Min Max 400 0 1.3 - Unit kHz μS tHD;STA 0.6 - μS tLOW tHIGH 1.3 0.6 0.6 0.06 (Note) 120 0.6 - - - - - - μS μS μS μS ns μS tSU;STA tHD;DAT tSU;DAT tSU;STO (Note) A device must internally provide a hold time of at least 300 ns for the SDA signal (referred to the VIH Min of the SCL signal) in order to bridge the undefined region of the falling edge of SCL. For 7(tHD;DAT), 8(tSU;DAT), make the setup in which the margin is full. Table 2 Characteristics of the SDA and SCL I/O stages for I2C-bus devices Parameter 10 11 12 13 14 Symbol LOW level input voltage: HIGH level input voltage: Pulse width of spikes which must be suppressed by the input filter. LOW level output voltage: at 3mA sink current Input current each I/O pin with an input voltage between 0.4V and 4.5V. tHD;STA tHD;STA :2µs :2us tHD;DAT tHD;DAT :1µs :1us VIL VIH tSP VOL1 II tSU;DAT tSU;DAT :1µs :1us Fast-mode devices Min Max -0.3 +1 2.3 5 0 50 0 0.4 -10 +10 Unit V V ns V μA tSU;STO tSU;STO :2µs :2us SCL SCL tBUF tBUF :4us :4µs tLOW tLOW :3us :3µs tHIGH tHIGH :1us :1µs SDA SDA SCL clock clock frequency : 250kHz SCL frequency:250kHz Figure 22. A Command Timing Example in the I2C Data Transmission www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 12/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS (2) I2C BUS FORMAT S 1bit MSB LSB Slave Address 8bit S Slave Address A Select Address Data P MSB LSB MSB LSB A Select Address A Data A P 1bit 8bit 1bit 8bit 1bit 1bit = Start condition (Recognition of start bit) = Recognition of slave address. The first 7 bits correspond to the slave address. The least significant bit is “L” which corresponds to write mode. = ACKNOWLEDGE bit (Recognition of acknowledgement) = Select address corresponding to volume, bass or treble. = Data on every volume and tone. = Stop condition (Recognition of stop bit) (3) I2C BUS Interface Protocol (a) Basic Format S Slave Address A Select Address MSB LSB MSB LSB A Data A MSB LSB P (b) Automatic Increment (Select Address increases (+1) according to the number of data.) S Slave Address A Select Address A Data1 A Data2 A ・・・・ MSB LSB MSB LSB MSB LSB MSB LSB (Example) ① Data1 shall be set as data of address specified by Select Address. ② Data2 shall be set as data of address specified by Select Address +1. ③ DataN shall be set as data of address specified by Select Address +N-1. DataN MSB (c) Configuration Unavailable for Transmission (In this case, only Select Address1 is set.) S Slave Address A Select Address1 A Data A Select Address 2 A Data A MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB A P LSB P (Note) If any data is transmitted as Select Address 2 next to data, it is recognized as data, not as Select Address 2. (4) Slave Address MSB A6 1 A5 0 www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 A4 0 A3 0 A2 0 13/37 A1 0 A0 0 LSB R/W 0 80H TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS (5) Select Address & Data Select Address (hex) Items MSB D7 Data D6 D5 D4 Initial setup 1 01 Advanced switch ON/OFF 0 Advanced switch time of Input Gain/Volume Tone/Fader/Super Bass Mixing Initial setup 2 02 LPF Phase 0 Subwoofer Output Select Initial setup 3 03 Front HPF Pass Rear HPF Pass Input Selector 05 Input gain 06 Volume gain Fader 1ch Front Fader 2ch Front Fader 1ch Rear Fader 2ch Rear Fader Subwoofer Mixing Bass setup Middle setup Treble setup 20 28 29 2A 2B 2C 30 41 44 47 Bass gain 51 Middle gain 54 Treble gain 57 Super Bass Gain System Reset 75 FE Full-diff Type Mute ON/OFF 0 0 0 Bass Boost/ Cut Middle Boost/ Cut Treble Boost/ Cut 0 1 LSB D3 D2 0 1 0 D1 Advanced switch time of Mute Subwoofer LPF fC Front / Rear HPF fC 0 1 0 0 Input selector 0 0 Input Gain Volume Gain / Attenuation Fader Gain / Attenuation Fader Gain / Attenuation Fader Gain / Attenuation Fader Gain / Attenuation Fader Gain / Attenuation Mixing Gain / Attenuation Bass fO 0 Middle fO 0 Treble fO 0 0 0 0 0 0 0 0 Bass Gain 0 0 Middle Gain 0 0 Treble Gain 0 0 0 0 0 0 Bass Q Middle Q 0 Treble Q 0 0 D0 Super Bass Gain 0 0 1 Advanced switch Note 1. The Advanced Switch works in the latch part while changing from one function to another. 2. Upon continuous data transfer, the Select Address rolls over because of the automatic increment function, as shown below. →01→02→03→05→06→20→28→29→2A→2B→2C →30→41→44→47→51→54→57→75 . 3. Advanced switch is not used for the function of input selector and subwoofer output select, etc. Therefore, please apply mute on the side when changing these settings. 4. When using mute function of this IC at the time of changing input selector, please switch mute ON/OFF for waiting advanced-mute time. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 14/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Select address 01 (hex) Time MSB D7 0.6msec 1.0msec 1.4msec 3.2msec Advanced Switch ON/OFF Time MSB D7 4.7 msec 7.1 msec 11.2 msec 14.4 msec Advanced Switch ON/OFF Mode MSB D7 OFF 0 Advanced switch time of Mute D6 D5 D4 D3 D2 D1 0 Advanced switch time 0 of Input gain/Volume 0 0 1 Tone/Fader/Super 1 Bass/Mixing 1 Advanced switch time of Input gain/Volume/Tone/Fader/ LSB Super Bass/Mixing D6 D5 D4 D3 D2 D1 D0 0 0 0 1 Advanced switch 0 0 1 Time of Mute 1 0 1 1 D6 0 ON LSB D0 0 1 0 1 1 Advanced switch ON/OFF D5 D4 D3 D2 D1 Advanced switch time of Input gain/Volume Tone/Fader/Super Bass/Mixing 0 1 LSB D0 Advanced switch Time of Mute Select address 02(hex) fC MSB D7 OFF 55Hz 85Hz 120Hz 160Hz Prohibition LPF Phase Mode MSB D7 LPF Front Rear Prohibition LPF Phase Phase MSB D7 0° 0 180° 1 D6 0 D6 0 D6 0 Subwoofer LPF fC D5 D4 D3 D2 0 0 0 Subwoofer Output 0 Select 0 1 D1 0 0 1 1 0 Other setting LSB D0 0 1 0 1 0 Subwoofer Output Select LSB D5 D4 D3 D2 D1 D0 0 0 0 1 0 Subwoofer LPF fC 1 0 1 1 D5 LPF Phase D4 D3 Subwoofer output select 0 D2 D1 LSB D0 Subwoofer LPF fC : Initial condition www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 15/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Select address 03(hex) Front/Rear D5 D4 0 0 0 0 1 1 0 1 Other setting MSB Mode 55Hz 85Hz 120Hz 160Hz Prohibition D7 D6 Front HPF Pass Rear HPF Pass MSB Mode D7 Front HPF Pass pass NOT pass D6 0 D5 pass D7 0 NOT pass 1 Rear HPF D4 D3 Front/Rear HPF fC 1 MSB Mode HPF fC D3 D2 0 1 0 0 0 D6 Rear HPF Pass D5 Front HPF D4 D3 Front/Rear HPF fC LSB D1 D0 1 0 LSB D2 D1 D0 0 1 0 D2 D1 D0 0 1 0 LSB Select address 05(hex) LSB Input Selector D4 D3 D2 D1 D0 A A1 A2 0 0 0 0 0 B B1 B2 0 0 0 0 1 C C1 C2 0 0 0 1 0 D single DP1 DP2 0 0 0 1 1 FullE single EP1 EP2 0 0 1 0 0 diff bias A diff A1 B1 0 0 0 1 1 1 1 type C diff B2 C2 1 0 0 0 0 select D diff DP1 DP2 0 0 1 1 0 E diff EP1 EP2 0 0 1 1 1 Input SHORT 0 1 0 0 1 Prohibition Other setting Input SHORT : The input impedance of each input terminal is lowered from 100kΩ(Typ) to 6 kΩ(Typ). (For quick charge of coupling capacitor) : Initial condition Mode MSB OUTF1 OUTF2 www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 D7 D6 D5 16/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Select address 05(hex) Mode MSB D7 0 1 Negative Input Bias D6 Full-diff Bias Type Select D5 D4 D3 D2 0 0 D0 Input Selector EP1 1ch Negative input type LSB D1 10 1ch signal input 1ch Differential EN1 For Ground –isolation type. 11 EN2 12 2ch 2ch Differential EP2 2ch signal input 13 Bias type EP1 10 For differential amplifier type 1ch 1ch Differential EN1 1ch signal input 11 EN2 12 2ch EP2 2ch signal input 13 2ch Differential Select address 06 (hex) Gain 0dB 1dB 2dB 3dB 4dB 5dB 6dB 7dB 8dB 9dB 10dB 11dB 12dB 13dB 14dB 15dB 16dB 17dB 18dB 19dB 20dB MSB D7 Mute ON/OFF D6 D5 0 0 Input Gain D4 D3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 1 : 1 Prohibition : 1 D2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 0 D1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 LSB D0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 : 1 : 1 : 1 : Initial condition www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 17/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Select address 06 (hex) Mode OFF ON MSB D7 0 1 D6 D5 0 0 Mute ON/OFF D4 D3 D2 D1 Input Gain Select address 20, 28, 29, 2A, 2B, 2C (hex) MSB Vol, Fader Gain / Attenuation Gain & ATT D7 D6 D5 D4 D3 D2 D1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Prohibition : : : : : : : 0 1 1 1 0 0 0 15dB 0 1 1 1 0 0 0 14dB 0 1 1 1 0 0 1 13dB 0 1 1 1 0 0 1 : : : : : : : : -77dB 1 1 0 0 1 1 0 -78dB 1 1 0 0 1 1 1 -79dB 1 1 0 0 1 1 1 1 1 0 1 0 0 0 Prohibition -∞dB : 1 1 : 1 1 LSB D0 : 1 1 : 1 1 : 1 1 : 1 1 LSB D0 0 1 : 0 1 0 1 : 1 0 1 0 : 1 1 : 0 1 Select address 30(hex) Gain & ATT Prohibition 7dB 6dB 5dB : -77dB -78dB -79dB MSB Mixing Gain / Attenuation D5 D4 D3 D2 0 0 0 0 0 0 0 0 D7 0 0 D6 0 0 : 0 0 0 0 : 1 1 1 1 : 1 1 1 1 : 1 1 1 1 : 1 1 1 1 : 1 1 1 1 : 1 1 1 1 : 0 0 0 0 : 0 0 0 1 : 1 1 : 1 1 : : 1 1 MIX OFF 1 1 (Note) See the precaution on P30 together, too. Prohibition LSB D1 0 0 D0 0 1 : 0 0 0 0 : 0 0 1 1 : 0 1 0 1 : 1 1 1 0 : 1 1 1 0 : 0 1 1 0 : 1 0 1 0 : 1 1 : 1 1 : 1 1 : 0 1 : Initial condition www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 18/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Select address 41(hex) Q factor 0.5 1.0 1.5 2.0 fO 60Hz 80Hz 100Hz 120Hz MSB D7 0 MSB D7 0 D6 D5 0 D6 0 Bass D4 Q factor D3 D2 Bass fO 0 Bass D4 0 1 0 1 D5 0 0 1 1 fO D3 0 0 D2 D1 0 0 1 1 LSB D0 0 1 0 1 D1 LSB D0 Bass Q factor 0 Select address 44(hex) Q factor 0.75 1.0 1.25 1.5 fO 500Hz 1kHz 1.5kHz 2.5kHz MSB D7 0 MSB D7 0 D6 0 D6 0 D5 Middle D4 Middle fO D5 0 0 1 1 Q factor D3 D2 0 Middle fO D4 D3 0 1 0 0 1 0 D2 D1 0 0 1 1 D1 LSB D0 0 1 0 1 LSB D0 Middle Q factor 0 Select address 47 (hex) Q factor 0.75 1.25 fO 7.5kHz 10kHz 12.5kHz 15kHz MSB D7 0 MSB D7 0 D6 Treble D5 D4 0 D6 0 Treble fO D5 0 0 1 1 Q factor D3 D2 0 Treble fO D4 D3 0 1 0 0 1 0 D1 0 D2 D1 0 0 LSB D0 0 1 LSB D0 Treble Q factor : Initial condition www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 19/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Select address 51, 54, 57 (hex) MSB Gain D7 0dB 1dB 2dB 3dB 4dB 5dB 6dB 7dB 8dB 9dB 10dB Bass/ 11dB Middle/ 12dB Treble 13dB Boost 14dB /cut 15dB 16dB 17dB 18dB 19dB 20dB D6 0 Bass/Middle/Treble Gain D5 D4 D3 D2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 1 0 0 1 0 0 1 0 0 1 0 0 1 1 0 0 1 1 0 1 1 0 1 1 1 0 0 1 0 0 1 0 0 1 0 0 1 0 1 1 0 1 : 1 1 Prohibition Mode Boost Cut MSB D7 0 1 : 1 1 : 1 1 D1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 LSB D0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 : 1 1 : 0 1 Bass/Middle/Treble Boost/Cut D6 D5 D4 D3 D2 D1 0 0 LSB D0 Bass/Middle/Treble Gain : Initial condition www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 20/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Select address 75 (hex) Gain MSB D7 0dB 1dB 2dB 3dB 4dB 5dB 6dB 7dB 8dB 9dB 10dB 11dB 12dB 13dB 14dB 15dB 16dB 17dB 18dB 19dB 20dB Super Bass Gain D5 D4 D3 D2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 1 0 0 1 0 0 1 0 0 1 0 0 0 1 1 0 1 1 0 1 1 0 1 1 1 0 0 1 0 0 1 0 0 1 0 0 1 0 1 1 0 1 D6 0 0 : 1 Prohibition : 1 : 1 D1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 LSB D0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 : 1 : 1 (Note) About Super Bass, the above Gain is for in indication purposes. Actual Gain (=20log (VOUT/VIN)) is different. Refer to P31 to P34 for the details. : Initial condition (6) About Power ON Reset Built-in IC initialization is made during power ON of the supply voltage. Please send initial data to all addresses at supply voltage on. And please turn ON mute until this initial data is sent. Limit Parameter Symbol Unit Conditions Min Typ Max Rise Time of VCC tRISE 33 - - µsec VCC Voltage of Release Power ON Reset VPOR - 4.1 - V www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 21/37 VCC rise time from 0V to 5V TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Application Information 1. Function and Specifications Function Specifications ・Stereo input ・Single-End/Differential Input selector Input gain Mute Volume (Possible to set the number of single-end/ differential as follows ) Single-End Differential Mode 1 0 4 Mode 2 1 3 Mode 3 3 2 Mode 4 4 1 Mode 5 5 0 Table.1 Combination of input selector ・+20dB to 0dB (1dB step) ・Possible to use “Advanced switch” for prevention of switching noise. ・Possible to use “Advanced switch” for prevention of switching noise. ・+15dB to -79dB (1dB step), -∞dB ・Possible to use “Advanced switch” for prevention of switching noise. ・+20dB to -20dB (1dB step) Bass ・Q=0.5, 1, 1.5, 2 ・fO=60, 80, 100, 120Hz ・Possible to use “Advanced switch” for prevention of switching noise. ・+20dB to -20dB (1dB step) Middle ・Q=0.75, 1, 1.25, 1.5 ・fO=500, 1k, 1.5k 2.5kHz ・Possible to use “Advanced switch” for prevention of switching noise. ・+20dB to -20dB (1dB step) Treble ・Q=0.75, 1.25 ・fO=7.5k, 10k, 12.5k, 15kHz ・Possible to use “Advanced switch” for prevention of switching noise. Fader LPF HPF ・+15dB to -79dB(1dB step), -∞dB ・Possible to use “Advanced switch” for prevention of switching noise. ・fC=55/85/120/160Hz, pass ・Phase shift (0°/180°) ・fC=55/85/120/160Hz, pass ・Monaural input Mixing ・+7dBdB to -79dB (1dB step), -∞dB ・Possible to use “Advanced switch” for prevention of switching noise. Super Bass ・+20dB to 0dB (1dB step) ・Possible to use “Advanced switch” for prevention of switching noise. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 22/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS 2. Volume / Fader Volume / Mixing ATT Attenuation Data (dB) D7 D6 D5 D4 D3 D2 D1 D0 (dB) D7 D6 D5 D4 D3 D2 D1 D0 +15 +14 +13 +12 +11 +10 +9 +8 +7 +6 +5 +4 +3 +2 +1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 -14 -15 -16 -17 -18 -19 -20 -21 -22 -23 -24 -25 -26 -27 -28 -29 -30 -31 -32 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 -33 -34 -35 -36 -37 -38 -39 -40 -41 -42 -43 -44 -45 -46 -47 -48 -49 -50 -51 -52 -53 -54 -55 -56 -57 -58 -59 -60 -61 -62 -63 -64 -65 -66 -67 -68 -69 -70 -71 -72 -73 -74 -75 -76 -77 -78 -79 -∞ 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 1 Adjustable range of mixing ATT is +7dB to -∞dB. :Initial condition www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 23/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS 3. Application Circuit FIL GND SDA SCL 10μ VCC OUTF1 OUTF2 OUTR1 OUTR2 OUTS1 OUTS2 0.1μ 10μ 10μ 10μ 10μ 10μ 10μ 10μ 32 31 VCC/2 GND 30 29 28 27 26 25 24 23 22 20 21 19 18 17 I2C BUS LOGIC VCC/2 ATT★ Fader★ Fader★ Fader★ Fader★ Fader★ ■Fader Fader Gain:+15dB to -79dB/1dB step Gain:+15dB~-79dB/1dB step ★no pop noise ■LPF fc=55/85/120/160Hz ■HPF fc=55/85/120/160Hz ■ATT Gain: +7dB to -79dB/1dB step Gain:+7dB~-79dB/1dB step ★no pop noise ■Super Bass ★no pop noise ■3 Band P-EQ (Tone control) Gain: +20dB to -20dB/1dB step Gain:+20dB~-20dB/1dB step ★no pop noise ・Bass:f0=60/80/100/120Hz Q=0.5/1.0/1.5/2.0 ・Meddle:f0=500/1k/1.5k/2.5kHz Q=0.75/1/1.25/1.5 ・Treble:f0=7.5k/10k/12.5k/15kHz Q=0.75/1.25 ■Volume Gain: +15dB to -79dB/1dB step Gain:+15dB~-79dB/1dB step ★no pop noise ■Input Gain Gain: +20dB to -0dB/1dB step Gain:+20dB~0dB/1dB step ★no pop noise LPF HPF ★Super Bass ★3 Band P-EQ (Tone control) ★Volume/Mute ★Input Gain Input selector (3 single-end and 2 stereo ISO) BufferdGND ISO amp BufferdGND ISO amp 1 2 2.2μ 3 2.2μ Single1 4 2.2μ 5 2.2μ Single2 GND Isolation3 6 2.2μ Single3 GND Isolation4 7 2.2μ 8 2.2μ 10 9 10μ 2.2μ GND Isolation1 or Single4 BufferdGND ISO amp BufferdGND ISO amp 11 2.2μ 12 10μ 13 2.2μ GND Isolation2 or Single5 14 15 16 2.2μ MIN ※GND Isolation1, GND Isolation2はSingle4,5に切換可能 ※Single1~3はGND Isolation3,4に切換可能 (About GND Isolation1 Isolation2, it isIsolation2, possibleit is possible to change from to 3 it is possible ※About single input 11~3, to change from single input to GND ※About and GNDGND Isolation1 and GND (About differentialinput inputtoto single input 44~5. to4,5.) 5. Isolation input 3,4. single input 1~3, it is possible to change from to change from differential single input single input to differential input 3,4.) Unit R : [Ω] C : [F] Figure 23. BD37544FS Notes on wiring ①Please connect the decoupling capacitor of the power supply in the shortest possible distance to GND. ②GND lines should be one-point connected. ③Wiring pattern of Digital should be away from that of Analog unit and cross-talk should not be acceptable. ④SCL and SDA lines of I2C BUS should not be parallel if possible. The lines should be shielded, if they are adjacent to each other. ⑤Analog input lines should not be parallel if possible. The lines should be shielded, if they are adjacent. ⑥Please short Pins 15-16, and Pins 18-19 if the Super Bass is not used. in the SuperBass un-use. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 24/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Power Dissipation About the thermal design of the IC Characteristics of an IC have a great deal to do with the temperature at which it is used, and exceeding absolute maximum ratings may degrade and destroy elements. Careful consideration must be given to the heat of the IC from the two standpoints of immediate damage and long-term reliability of operation. Reference data SSOP-A32 Power Dissipation : Pd (W) 1.5 measurement Condition : ROHM Standard board board Size : 70 x 70 x 1.6(mm3) material : A FR4 grass epoxy board (3% or less of copper foil area) 0.95W 1.0 θja = 131.6°C/W 0.5 0.0 0 25 50 75 85 100 125 150 Ambient Temperature : Ta (°C) Figure 24. Temperature Derating Curve (Note) Values are actual measurements and are not guaranteed. Power dissipation values vary according to the board on which the IC is mounted. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 25/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS I/O Equivalent Circuits Terminal No. Terminal Name Terminal Voltage Equivalent Circuit A1 2 A2 3 B1 4 B2 5 C1 6 C2 4.25 100KΩ GND Input terminal available to ingle/Differential mode. The input impedance is 250kΩ(Typ). VCC 7 DP1 8 DN 9 DP2 10 EP1 11 EN 12 EP2 4.25 250KΩ GND An input terminal for Super Bass VCC 16 SBB1 18 SBB2 Description A terminal for signal input. The input impedance is 100kΩ(Typ). VCC 1 Terminal - GND 15 SBA1 17 SBBIAS 19 SBA2 22 OUTS2 23 OUTS1 24 OUTR2 25 OUTR1 26 OUTF2 27 OUTF1 A terminal for Super Bass and fader, Subwoofer output. VCC 4.25 GND An output terminal for Super Bass. VCC 14 SBC1 20 SBC2 4.25 3KΩ GND Values in the pin explanation and input/output equivalent circuit are reference values only and are not guaranteed. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 26/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS I/O Equivalent Circuits – continued Terminal No. Terminal Name Terminal Voltage Equivalent Circuit Terminal Description Power supply terminal. 28 VCC 8.5 A terminal for clock input of I2C BUS communication. VCC 29 SCL - 1.65V GND A terminal for data input of I2C BUS communication. VCC 30 SDA - 1.65 V GND Ground terminal. 31 GND 0 1/2 VCC terminal. Voltage for reference bias of analog signal system. The simple precharge circuit and simple discharge circuit for an external capacitor are built in. VCC 50k 32 FIL 4.25 50k GND A terminal for signal input. The input impedance is 27kΩ(typ). VCC 13 MIN 4.25 27KΩ GND Values in the pin explanation and input/output equivalent circuit are reference values only and are not guaranteed. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 27/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Operational Notes 1. Reverse Connection of Power Supply Connecting the power supply in reverse polarity can damage the IC. Take precautions against reverse polarity when connecting the power supply, such as mounting an external diode between the power supply and the IC’s power supply pins. 2. Power Supply Lines Design the PCB layout pattern to provide low impedance supply lines. Separate the ground and supply lines of the digital and analog blocks to prevent noise in the ground and supply lines of the digital block from affecting the analog block. Furthermore, connect a capacitor to ground at all power supply pins. Consider the effect of temperature and aging on the capacitance value when using electrolytic capacitors. 3. Ground Voltage Ensure that no pins are at a voltage below that of the ground pin at any time, even during transient condition. 4. Ground Wiring Pattern When using both small-signal and large-current ground traces, the two ground traces should be routed separately but connected to a single ground at the reference point of the application board to avoid fluctuations in the small-signal ground caused by large currents. Also ensure that the ground traces of external components do not cause variations on the ground voltage. The ground lines must be as short and thick as possible to reduce line impedance. 5. Thermal Consideration Should by any chance the power dissipation rating be exceeded the rise in temperature of the chip may result in deterioration of the properties of the chip. In case of exceeding this absolute maximum rating, increase the board size and copper area to prevent exceeding the Pd rating. 6. Recommended Operating Conditions These conditions represent a range within which the expected characteristics of the IC can be approximately obtained. The electrical characteristics are guaranteed under the conditions of each parameter. 7. Inrush Current When power is first supplied to the IC, it is possible that the internal logic may be unstable and inrush current may flow instantaneously due to the internal powering sequence and delays, especially if the IC has more than one power supply. Therefore, give special consideration to power coupling capacitance, power wiring, width of ground wiring, and routing of connections. 8. Operation Under Strong Electromagnetic Field Operating the IC in the presence of a strong electromagnetic field may cause the IC to malfunction. 9. Testing on Application Boards When testing the IC on an application board, connecting a capacitor directly to a low-impedance output pin may subject the IC to stress. Always discharge capacitors completely after each process or step. The IC’s power supply should always be turned off completely before connecting or removing it from the test setup during the inspection process. To prevent damage from static discharge, ground the IC during assembly and use similar precautions during transport and storage. 10. Inter-pin Short and Mounting Errors Ensure that the direction and position are correct when mounting the IC on the PCB. Incorrect mounting may result in damaging the IC. Avoid nearby pins being shorted to each other especially to ground, power supply and output pin. Inter-pin shorts could be due to many reasons such as metal particles, water droplets (in very humid environment) and unintentional solder bridge deposited in between pins during assembly to name a few. 11. Unused Input Pins Input pins of an IC are often connected to the gate of a MOS transistor. The gate has extremely high impedance and extremely low capacitance. If left unconnected, the electric field from the outside can easily charge it. The small charge acquired in this way is enough to produce a significant effect on the conduction through the transistor and cause unexpected operation of the IC. So unless otherwise specified, unused input pins should be connected to the power supply or ground line. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 28/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Operational Notes – continued 12. Regarding the Input Pin of the IC This monolithic IC contains P+ isolation and P substrate layers between adjacent elements in order to keep them isolated. P-N junctions are formed at the intersection of the P layers with the N layers of other elements, creating a parasitic diode or transistor. For example (refer to figure below): When GND > Pin A and GND > Pin B, the P-N junction operates as a parasitic diode. When GND > Pin B, the P-N junction operates as a parasitic transistor. Parasitic diodes inevitably occur in the structure of the IC. The operation of parasitic diodes can result in mutual interference among circuits, operational faults, or physical damage. Therefore, conditions that cause these diodes to operate, such as applying a voltage lower than the GND voltage to an input pin (and thus to the P substrate) should be avoided. Resistor Transistor (NPN) Pin A Pin B C E Pin A N P+ P N N P+ N Pin B B Parasitic Elements N P+ N P N P+ B N C E Parasitic Elements P Substrate P Substrate GND GND Parasitic Elements GND Parasitic Elements GND N Region close-by Figure 25. Example of monolithic IC structure 13. About Signal Input (a) About Input Coupling Capacitor Constant Value The constant value of input coupling capacitor C(F) is decided with respect to the input impedance R IN(Ω) at the input signal terminal of the IC. The first HPF characteristic of RC is composed. G〔dB〕 C〔F〕 0 RIN 〔Ω〕 A(f) SSH f〔Hz〕 INPUT A f 2 fCRIN 2 2 1 2 fCRIN (b) About the Input Selector SHORT SHORT mode is the command which makes switch SSH =ON of input selector part so that the input impedance RIN of all terminals becomes small. Switch SSH is OFF when SHORT command is not selected. The constant time brought about by the small resistance inside and the capacitor outside the LSI becomes small when this command is used. The charge time of the capacitor becomes short. Since SHORT mode turns ON the switch of SSH and makes it low impedance, please use it at no signal condition. www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 29/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Operational Notes – continued 14. About MIX (1) About Specification of Fader -∞ at MIX ON. Mix_signal is added to Main_signal after Fader_Gain(+15dB to -79dB) like the figure. When Fader is set at -∞, the signal after a MIX signal is added is done with MUTE because the -∞ circuit of Fader is in the step after the addition circuit. +15dB to -79dB +7dB to -79dB Figure 26. About Front Fader and MIX (2) About Advanced Switching of MIX_Gain/ATT When advanced switching of MIX_Gain/ATT works, MIX goes a switching movement that it passes through the state of MIX_OFF like in B figure below (from current settingof MIX_Gain/ATT to MIX_OFF to a target setting of MIX_Gain/ATT). A Fader_Gain/ATT 0dB to -6dB advanced switching B MIX_Gain/ATT 0dB to -6dB advanced switching Figure 27. Advanced Switching Movement when MIX_Gain/ATT is Changed www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 30/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Operational Notes – continued 15. About Super Bass Circuit The (the following Super Bass) which strengthens a low band like the graph below a can be realized by composing an external circuit with the pin 14 to 20 as shown in Figure 28. C1 C2 R2 R2 C2 C1 Figure 28. Super Bass circuit Figure 29. Super Bass Gain vs Frequency www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 31/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS (a) Gain Step Width becomes a Logarithm When a setup of Gain is made 0,1,2,3,5,7,11,20dB, it becomes the following (bottom right) character. (C1=0.047µF, C2=0.1µF, R1=3kΩ, R2=560kΩ) Expansion 0dB to 20dB Figure 27. About Gain step of Super Bass Figure 30. About Gain step of Super Bass www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 32/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS (b) You must take level diagram into consideration so that output may not do a clip Example (C1=0.047µF, C2=0.1µF, R2=560kohm, VCC=8.5V) To prevent output clipping due to amplification when Super Bass is used, adjust the level diagram with volume until the Tone output level becomes less than 0.2Vrms. C1 C2 Please adjust so that the maximum R2 R2 C2 C1 level of the Tone output becomes less than 0.2Vrms. (at VCC=8.5V) Figure 31. Super Bass Level Diagram www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 33/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS (c) About fO and Gain of Super Bass fO and Gain of Super Bass deviates due to the deviation of the value of C1, C2, R2 (Components with the outside), R1 (the resistance built in IC). Example:Super Bass Gain – frequency characteristic at Dispersion condition of C1,C2,R2±5%, R1±30% (C1=0.047µF, C2=0.1µF, R1=3kohm, R2=560kohm, Super Bass Gain=20dB) Dispersion of fo: About ±20% Dispersion of Gain: About ±2dB Figure 32. Dispersion of fo and Gain of Super Bass (d) How to Deal with Pins of Super Bass when not used Short Pins 15 to 16, Pins 18 to 19 as shown in Figure 33 when the Super Bass function is not used. Short Pin 15 to 16, Pin 18 to 19 Figure 33. How to Deal with Pins of Super Bass when not used www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 34/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Ordering Information B D 3 7 5 Part Number 4 4 F S Package FS: SSOP-A32 - E2 Packaging and forming specification E2: Embossed tape and reel Marking Diagram SSOP-A32 (TOP VIEW) Part Number Marking BD35744FS LOT Number 1PIN MARK www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 35/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Physical Dimension, Tape and Reel Information Package Name www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 SSOP-A32 36/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 BD37544FS Revision History Date Revision 16.Dec.2015 001 Changes New Release www.rohm.com © 2015 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 37/37 TSZ02201-0C2C0E100590-1-2 16.Dec.2015 Rev.001 Datasheet Notice Precaution on using ROHM Products 1. Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment, OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you (Note 1) , transport intend to use our Products in devices requiring extremely high reliability (such as medical equipment equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or serious damage to property (“Specific Applications”), please consult with the ROHM sales representative in advance. Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any ROHM’s Products for Specific Applications. (Note1) Medical Equipment Classification of the Specific Applications JAPAN USA EU CHINA CLASSⅢ CLASSⅡb CLASSⅢ CLASSⅢ CLASSⅣ CLASSⅢ 2. ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which a failure or malfunction of our Products may cause. The following are examples of safety measures: [a] Installation of protection circuits or other protective devices to improve system safety [b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure 3. Our Products are designed and manufactured for use under standard conditions and not under any special or extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of any ROHM’s Products under any special or extraordinary environments or conditions. If you intend to use our Products under any special or extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of product performance, reliability, etc, prior to use, must be necessary: [a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents [b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust [c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves [e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items [f] Sealing or coating our Products with resin or other coating materials [g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning residue after soldering [h] Use of the Products in places subject to dew condensation 4. The Products are not subject to radiation-proof design. 5. Please verify and confirm characteristics of the final or mounted products in using the Products. 6. In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied, confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect product performance and reliability. 7. De-rate Power Dissipation depending on ambient temperature. When used in sealed area, confirm that it is the use in the range that does not exceed the maximum junction temperature. 8. Confirm that operation temperature is within the specified range described in the product specification. 9. ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in this document. Precaution for Mounting / Circuit board design 1. When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product performance and reliability. 2. In principle, the reflow soldering method must be used on a surface-mount products, the flow soldering method must be used on a through hole mount products. If the flow soldering method is preferred on a surface-mount products, please consult with the ROHM representative in advance. For details, please refer to ROHM Mounting specification Notice-PGA-E © 2015 ROHM Co., Ltd. All rights reserved. Rev.002 Datasheet Precautions Regarding Application Examples and External Circuits 1. If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the characteristics of the Products and external components, including transient characteristics, as well as static characteristics. 2. You agree that application notes, reference designs, and associated data and information contained in this document are presented only as guidance for Products use. Therefore, in case you use such information, you are solely responsible for it and you must exercise your own independent verification and judgment in the use of such information contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of such information. Precaution for Electrostatic This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron, isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control). Precaution for Storage / Transportation 1. Product performance and soldered connections may deteriorate if the Products are stored in the places where: [a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [b] the temperature or humidity exceeds those recommended by ROHM [c] the Products are exposed to direct sunshine or condensation [d] the Products are exposed to high Electrostatic 2. Even under ROHM recommended storage condition, solderability of products out of recommended storage time period may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is exceeding the recommended storage time period. 3. Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads may occur due to excessive stress applied when dropping of a carton. 4. Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of which storage time is exceeding the recommended storage time period. Precaution for Product Label QR code printed on ROHM Products label is for ROHM’s internal use only. Precaution for Disposition When disposing Products please dispose them properly using an authorized industry waste company. Precaution for Foreign Exchange and Foreign Trade act Since concerned goods might be fallen under listed items of export control prescribed by Foreign exchange and Foreign trade act, please consult with ROHM in case of export. Precaution Regarding Intellectual Property Rights 1. All information and data including but not limited to application example contained in this document is for reference only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any other rights of any third party regarding such information or data. 2. ROHM shall not have any obligations where the claims, actions or demands arising from the combination of the Products with other articles such as components, circuits, systems or external equipment (including software). 3. No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any third parties with respect to the Products or the information contained in this document. Provided, however, that ROHM will not assert its intellectual property rights or other rights against you or your customers to the extent necessary to manufacture or sell products containing the Products, subject to the terms and conditions herein. Other Precaution 1. This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM. 2. The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written consent of ROHM. 3. In no event shall you use in any way whatsoever the Products and the related technical information contained in the Products or this document for any military purposes, including but not limited to, the development of mass-destruction weapons. 4. The proper names of companies or products described in this document are trademarks or registered trademarks of ROHM, its affiliated companies or third parties. Notice-PGA-E © 2015 ROHM Co., Ltd. All rights reserved. Rev.002 Datasheet General Precaution 1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents. ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny ROHM’s Products against warning, caution or note contained in this document. 2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior notice. Before purchasing or using ROHM’s Products, please confirm the la test information with a ROHM sale s representative. 3. The information contained in this doc ument is provi ded on an “as is” basis and ROHM does not warrant that all information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or concerning such information. Notice – WE © 2015 ROHM Co., Ltd. All rights reserved. Rev.001