Audio Accessory ICs for Mobile Devices Mixer & Selector IC with PCM CODEC and 16bit D/A Converter BU7861KN No.10087EAT04 ●Description The “In/Output Selector with Built-in PCM Codec 16bit D/A Converter” LSI is ideal for improving the sound quality of and miniaturizing cellular phone handsets with music playback function, accumulating analog circuits for sound which application CPUs and bass band LSIs are not ideally able to handle. ●Features 1) Loaded with stereo 16bit audio D/A converter 2) Compatible with stereo and analog interfaces 3) Built-in stereo headphone amp (16Ω) 4) Lowpass correction circuit built into the headphone amp 5) Gain-adjustable volume built in 6) Flexible mixing function built in ●Applications Portable information communication devices such as cellular phone handsets and PDA (Personal Digital Assistants) Cellular phone handsets with music playback function ●Absolute maximum ratings Parameter Symbol Ratings Unit DVDD AVDD, PVDD -0.3 ～ 4.5 V Pd 500 *1 mW Operational Temperature Range TOPR -25 ～ +80 ℃ Storage Temperature Range TSTG -55 ～ +125 ℃ Supply Voltage Power Dissipation *1 When used at over Ta=25℃, lessen by 5.0mW per 1℃ increase. ●Operating conditions Parameter Symbol Ratings Min. Typ. Max. Unit Digital Supply Voltage DVDD 2.7 3.0 3.3 V Analog Supply Voltage AVDD 2.7 3.0 3.3 V Power Supply Voltage PVDD 2.7 3.0 3.3 V FSYNC － 8 － kHz PLL Synchronous Signal Frequency www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 1/13 2010.09 - Rev.A Technical Note BU7861KN ●Electrical characteristics (Unless specified, Ta=25℃, DVDD=AVDD=3.0V, PVDD=3.0V, FSYNC=8kHz) ・Complete Block Parameter Symbol Limits Min. Typ. Max. Unit Conditions Consumed Current 1 IDD1 － 0.1 10 µA When all power down, FSYNC L fixed Consumed Current 2 IDD2 － 0.8 1.2 mA REFON, FSYNC L fixed Consumed Current 3 IDD3 － 1.7 2.6 mA REFON+PLLON, FSYNC=8kHz Consumed Current 4 IDD4 － 1.6 2.4 mA REFON+MICBON, Consumed Current 5 IDD5 － 1.0 1.5 mA REFON+EXTOUT, FSYNC L fixed Consumed Current 6 IDD6 － 5.9 9.0 mA Consumed Current 7 IDD7 － 6.4 9.6 mA Consumed Current 8 IDD8 － 2.2 3.3 mA REFON+RECON, Consumed Current 9 IDD9 － 2.9 4.5 mA REFON+HPON, Consumed Current 10 IDD10 － 2.2 3.3 mA REFON+ HPVOLON, L fixed Consumed Current 11 IDD11 － 10.0 15.0 mA DACON, Consumed Current 12 IDD12 － 18.0 27.0 mA All power on FSYNC=8kHz Digital High Level Input Voltage VIH 0.8× DVDD － － V Digital Low Level Input Voltage VIL － － 0.2× DVDD V Digital High Level Input Current IIH － － 10 µA VIH=DVDD Digital Low Level Input Current IIL -10 － － µA VIL=0V VOH DVDD -0.5 － － V IOH=-1mA VOL － － 0.5 V IOL=1mA Vhys 0.3 0.5 0.7 V SYSCLK, BCLK, LRCLK, FSYNC, DSPCLK Digital High Level Output Voltage Digital Low Level Output Voltage Schmidt Input Hysteresis Width www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 2/13 FSYNC L fixed REFON+PLLON+VICON, FSYNC=8kHz REFON+PLLON+VICON+TONEON, FSYNC=8kHz FSYNC L fixed FSYNC L fixed FSYNC SYSCLK=256fs SYSCLK=256fs 2010.09 - Rev.A Technical Note BU7861KN ・Sound Block Parameter Limits Unit Conditions Min. Typ. Max. Frequency Characteristics -3 － +3 dB Reference level (-20dB due to full scale) f=20Hz～20kHz -3dB band width DAC Full Scale 1.4 1.8 2.2 VP-P 0.6×VDD - - ±1.5 dB Difference between Lch and Rch levels during DAC full scale Distortion (No Bass Boost) － － 1 % DAC input=-0.5dBFS, HP_VOL=-2dB, HP2_VOL=0dB Distortion (With Bass Boost) － － 10 % DAC input=-0.5dBFS, HP_VOL=-2dB, HP2_VOL=0dB S/N 75 83 － dB During full scale HP_VOL, HP2_VOL=0dB, f=1kHz, A-weighted Stereo headphone amp included Crosstalk 70 80 － dB Measures the leak from Lch to Rch during full-scale output. 1kHz BPF Output Level during Mute 70 80 － dB 1kHz BPF Gain Error between Channels ・Driver Amp Block Limits Parameter Microphone Amp Max. 40 － － － 1.0 － 60 66 － dB C-Message 12 25 20 35 － － dB 0.2VP-P superimposed to supply COMIN 1.0µF, MICIN no input 26 32 － Ω 31.25 45 － mW RL=32Ω, f=1kHz S/N 80 90 － dB RL=32Ω, C-Message Offset Voltage － 5 100 mV 65 60 77 70 － － dB 12 16 － Ω 15 25 － mW RL=16Ω, f=1kHz 15 40 26 48 － － dB 0.2VP-P superimposed to supply COMIN 1.0µF, HP_Vol=0dB 0.707 － － Vrms RL=10kΩ, f=1kHz 0.707 － － Vrms RL=3kΩ, f=1kHz Gain Configurable Range (THD≦1%) Maximum Output Voltage (THD≦1%) PSRR 100Hz 1kHz Load Maximum Output Power (THD≦1%） PSRR 100Hz 1kHz Load Stereo Headphone Amp SPOUT Terminal EXTOUT Terminal Conditions Typ. S/N Receiver Amp Unit Min. Maximum Output Power (THD≦1%） 100Hz PSRR 1kHz Maximum Output Voltage (THD≦1%) Maximum Output Voltage (THD≦1%) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 3/13 dB f=100Hz～3.4kHz Vrms MICO terminal, f=1kHz 0.2VP-P superimposed to supply COMIN 1.0µF 2010.09 - Rev.A Technical Note BU7861KN ・Codec Block Limits Parameter Transmitting Side Reference Input Level Receiving Side Reference Input Level Pass Gain Transmitter Signal vs. General Power Distortion MICIN→DSPOUT Receiver Signal vs. General Power Distortion DSPIN→RECP Transmitter Transmission Level MICIN→DSPOUT Receiver Transmission Level DSPIN→RECP Transmitter Transmission Loss F Special MICIN→DSPOUT Receiver Transmission Loss F Special DSPIN→RECP MICIN→ DSPOUT EXTIN→ DSPOUT DSPIN→ RECP DSPIN→ SPOUT DSPIN→ EXTOUT EXTIN→ RECN EXTIN→ SPOUT Min. Typ. Max. 0.44 0.50 0.56 Unit Vrms 0.119 0.135 0.151 Vrms 0.44 0.50 0.56 Vrms 0.44 0.50 0.56 Vrms 0.44 0.50 0.56 Vrms 2.4 3.2 4.0 dB 2.4 3.2 4.0 dB -45dBm0 24 － － -40dBm0 29 － － 0, -30dBm0 35 － － -45dBm0 24 － － -40dBm0 29 － － 0, -30dBm0 35 － － -55dBm0 -0.9 － 0.9 -50dBm0 -0.6 － 0.6 0, -40dBm0 -0.3 － 0.3 -55dBm0 -0.9 － 0.9 -50dBm0 -0.6 － 0.6 0, -40dBm0 -0.3 － 0.3 0.06kHz 24 － － 0.2kHz 0 － 2.5 0.3～3.0kHz -0.3 － 0.3 3.4kHz -0.3 － 0.9 1020Hz, sine wave, MIC amp gain 0dB Tx_Vol 0dB, C-MESSAGE dB 1020Hz, sine wave Rx_Vol 0dB, C-MESSAGE dB 1020Hz, -10dBm0 typical MIC amp gain 0dB Tx_Vol 0dB, C-MESSAGE dB 1020Hz, -10dBm0 typical Rx_Vol 0dB, C-MESSAGE dB 1020Hz, 0dBm0 at transmission MIC amp gain 0dB Tx_Vol 0dB dB 1020Hz, 0dBm0 at input Rx_Vol 0dB 3.6kHz 0 － － 3.78kHz 6.5 － － 0.3～3.0kHz -0.3 － 0.5 3.4kHz -0.3 － 0.9 3.6kHz 0.0 － － 3.78kHz 6.5 － － － － -65 dBm0 － － -75 dBV MICIN→ DSPOUT DSPIN→ REC[P-N] Crosstalk (Transmitter→ Receiver) MICIN→ REC[P-N] 60 70 － dB Crosstalk (Receiver→ Transmitter) DSPIN→ DSPOUT 63 68 － dB Distortion 2nd to 5th time 40 50 － dB www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 4/13 When 1020Hz, sine wave, 0dBm0 transmitting MIC amp gain 0dB, Tx_Vol 0dB When 1020Hz, sine wave, 0dBm0 transmitting Amp gain 11.37dB, Tx_Vol 0dB At 1020Hz, sine wave, 0dBm0 input Rx_Vol 0dB At 1020Hz, sine wave, 0dBm0 input Rx_Vol 0dB At 1020Hz, sine wave, 0dBm0 input Rx_Vol 0dB EXTIN input, Rx_testline path Rx_Vol 0dB EXTIN input, Rx_testline path SPRX_Vol 0dB dB Noise during idle transmission Noise during idle reception RX Higher Harmonic Component Conditions MIC amp gain 0dB Tx_Vol 0dB, C-MESSAGE DSPIN ALL0 Rx_Vol 0dB, C-MESSAGE 1020Hz, 0dBm0 at transmission MIC amp gain 0dB DSPIN ALL0 Tx_Vol 0dB Rx_Vol 0dB ST_MT OFF 1020Hz, 0dBm0 at input, 2040Hz component MIC amp gain 30dB Tx_Vol 0dB Rx_Vol 0dB ST_MT ON 1020Hz, sine wave, 0dBm0 at input Rx_Vol 0dB 2010.09 - Rev.A Technical Note BU7861KN ・Pass Switch Block Parameter ※1 Min. Limits Typ. Max. 70 80 － Unit Conditions dB Configured at each mute SW Measured at 1kHz BPF dB Configured at each mute SW Leakage amount to each test line during normal usage Measured at 1kHz BPF Mute Level ※2 70 80 － Receiving side is muted digitally by VIC_MT and SPVIC_MT. ※1 MIC_SEL, MIC_MT, EXTIN_MT, MEL_MT, VIC_MT, REC_MT, ST_MT, HSJL_MT, HSJR_MT, SPVIC_MT, SPMEL_VOL, EXTOUT_SEL, TONE_MT, SOUND_MT, DIG_MT, AIN_MT, HP_SMT, SPOUT_SMT, EXTOUT_SMT, REC_SMT, HPR_MT, HPL_MT ※2 Tx_test1, Tx_test2, Rx_test1, Rx_test2, REC_TST, HPR_TST, HPL_TST ・DTMF/TONE Generator Block Parameter Output Level Tone Distortion Min. Limits Typ. Max. VDTMF_L -15.3 -14.3 -13.3 dBV VDTMF_H -12.8 -11.8 -10.8 dBV VTONE_L -15.3 -14.3 -13.3 dBV VTONE_H -12.8 -11.8 -10.8 dBV SDTN － － -38 dB Symbol Unit Conditions f:DTMF_L TONE→RECP MEL_Vol 0dB Rx_Vol 0dB f:DTMF_H TONE→RECP MEL_Vol 0dB Rx_Vol 0dB f: designated TONE, low band TONE→RECP MEL_Vol 0dB Rx_Vol 0dB f: designated TONE, high band TONE→RECP MEL_Vol 0dB Rx_Vol 0dB f=1kHz ( designated TONE) TONE→REC[P-N] MEL_Vol 0dB Rx_Vol 0dB C-Message ・Microphone Bias Block Parameter Symbol Limits Min. Typ. Max. Unit Conditions Output Voltage VO 1.8 2.0 2.2 V Maximum Output Current IO 2 － － mA ΔVO1 － 14.0 30 mV Io=100µA～2mA N － -109 -90 dBV C-Message Io=500µA Load Stability Output Noise Voltage www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 5/13 Io=500µA 2010.09 - Rev.A Technical Note BU7861KN ●Reference data 1.0 2.0 19 0.8 17 Vdd=3.0V 16 Vdd=2.6V 15 0.6 1.5 0.4 Vdd=3.4V 1.0 Gain [dB] Circuit Current[mA] Stand-by Current [uA] Vdd=3.4V 18 Vdd=3.0V 50 Temperature[℃] Lch -60 LEVEL [dBV] Rch -70 -80 -40 -20 -20 -20 -40 -40 -60 -80 -120 -120 -140 0 5000 DAC Output Lev el [dBFS] 0 2dB 6dB -6 8dB -8 10dB -10 100 1000 10000 Frequency [Hz] 8dB 0 10dB -10 4dB 2dB -4 12dB -6 14dB -8 Fig.7 Bus Boost Frequency Characteristics -20 -30 100 1000 10000 Frequency [Hz] -60 100000 0 0 0 -10 -10 -20 -20 -30 -30 THD+N [dB] -6 THD+N [dB] 0 -40 -50 -60 -10 -70 -70 -12 -80 2000 3000 Frequency [Hz] 4000 Fig.10 Voice CODEC RX Frequency Characteristics www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 0 10 20 30 40 Output Power [mW] 50 Fig.11 Headphone Amp Output Characteristics @ vdd=3.0V, 1kHz 6/13 4000 -50 -60 1000 2000 3000 Frequency [Hz] -40 -8 0 1000 Fig.9 Voice CODEC TX Frequency Characteristics Fig.8 Bus Boost + High Pass Emphasis Frequency Characteristics 2 -4 20000 -50 -16 10 -2 10000 15000 Frequency [Hz] -40 -14 100000 5000 10 -12 14dB -14 0 Fig.6 16bit D/A Converter FFT @ 0FS -10 12dB -12 20000 6dB -2 Bass Boost Gain [dB] Bass Boost Gain [dB] 4dB -4 10000 15000 Frequency [Hz] Fig.5 16bit D/A Converter FFT @ 0dBFS, 1kHz Fig.4 16bit D/A Converter Distortion @ 1kHz 2 20000 -80 -100 0 10000 15000 Frequency [Hz] -60 -100 2 5000 Fig.3 16bit D/A Converter Frequency characteristics@ 0dBFS 0 0 -2 0 0 -140 -90 -60 -16 10 100 TX Gain [dB] THD+N [dB] 0 50 Temperature [℃] Fig.2 Static Consumed Current -40 -50 -1.0 -50 100 Fig.1 Operational Current (All On) RX Gain [dB] -0.8 LEVEL [dBV] 0 Rch -0.6 0.0 -50 0.0 -0.2 -0.4 0.5 Vdd=2.6V 14 Lch 0.2 -80 0 20 40 60 80 Output Power [mW] 100 Fig.12 Receiver Amp Output Characteristics @ vdd=3.0V, 1kHz 2010.09 - Rev.A Technical Note BU7861KN MICO MICIN_C MICIN_1 MICIN_2 MIC BIAS MIC_BIAS VDD/VSS CPOP SMUTE PVSS DVSS PVDD AVSS VREF/COMMON CPU I/F DVDD AVDD COMIN PVCOM TXCOM RXCOM AUDRXD AUDTXD AUDCS RSTB MICB_1 MICB_2 AUDCLK ●Block diagrams POP SMUTE 100kΩ MIC_MT 100kΩ 16step + MIC_SEL + TX_TEST1 A/D TX_VOL 27kΩ BPF +6～-8dB DSPCLK RX_TEST1 EXTIN EXTIN_MT DSPIN Tx_testline EXTGND 330kΩ DSPOUT DSP I/F Rx_testline EXTOUT 8step EXTOUT TX_TEST2 ST_VOL 60kΩ EXTOUT_SMT ST_MT -18～-42dB 60kΩ 100kΩ RX_VOL + RECN Gain=3.2dB 32step 100kΩ REC_MT + D/A 41.7kΩ VIC_MT 32step +6～-54dB 100kΩ REC_TST 100kΩ PLL MEL_VOL 40kΩ 40kΩ 60kΩ MEL_MT + RECP LPF RX_TEST2 0～-30dB 100kΩ 60kΩ 41.7kΩ SPVIC_MT 60kΩ SPMEL_MT 16step +6～-8dB 32step SPOUT + SPRX_VOL FSYNC DTMF/ TONE TONE_MT + Gain=3.2dB REC_SMT PLLLPF SPMEL_VOL 16step 0～-28dB SPOUT_SMT 0～-30dB SOUND_MT 80kΩ 200kΩ HP_RI HPL_MT 8step +14～0dB Gain=+3dB 70.8kΩ 100kΩ + - 100kΩ SYSCLK HP_VOL HSJR_MT 25kΩ 25kΩ DIG_MT 50kΩ + HP2_VOL HPR_MT 8step +14～0dB 100kΩ 200kΩ + HP2_VOL SDI Digital I/F HP_R 100kΩ 50kΩ 50kΩ 32step 0～-45dB + AIN_L 80kΩ HSJL_MT AIN_VOL Digital Bass Boost 200kΩ + HP_SMT + - HP_L Gain=+3dB 70.8kΩ 100kΩ AIN_MT 16bit DAC HPL_TST 200kΩ 100kΩ HP_LI AIN_R 50kΩ HPR_TST LRCLK BCLK 25kΩ 25kΩ CSTEP DACLO DACRO TEST PVDD HP_RI HP_R HP_L HP_LI PVSS AUDRXD AUDTXD AUDCS AUDCLK PLLLPF FSYNC Fig.13 BU7861KN Block Diagram 36 35 34 33 32 31 30 29 28 27 26 25 24 DSPIN RECN 37 38 23 DSPOUT CSTEP 39 22 DSPCLK CPOP 40 21 DVSS SMUTE 41 20 DVDD RECP RXCOM 42 19 SYSCLK BU7861KN TXCOM 43 18 BCLK 17 SDI PVCOM 44 16 LRCLK COMIN 45 6 7 8 9 10 11 12 DACLO 5 AIN_R 4 AIN_L 3 SPOUT 2 AVSS MICO 1 AVDD 13 DACRO EXTIN MICB_2 48 EXTGND 14 TEST MICIN_2 MICB_1 47 MICIN_1 15 RSTB MICIN_C EXTOUT 46 Fig.14 BU7861KN Pin Placement Diagram www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 7/13 2010.09 - Rev.A Technical Note BU7861KN ●Lowpass correction circuit The headphone output terminal (either HP_X or HPX_OUT) has a built-in “lowpass correction circuit” to correct lowpass decay, comprised of output coupling capacity and headphone impedance. 200kΩ CCHPx HP_XI or HPX_FB 200kΩ 100kΩ CL + + HP_X or HPX_OUT OUTPUT RL Fig.15 Headphone Output Section Equivalent Circuit Lowpass Cut-off Frequency Lowpass Boost Frequency Boost Gain fC= 1/(2･π･CL･RL) fBOOST = 1/(2･π･CCHPx･200kΩ) ABOOST = 20･log((200 kΩ+1/(2･π･f･CCHPx))/100 kΩ) (Maximum lowpass boost is 6dB.) The constant configuration calculates the lowpass cut-off frequency fC after confirming the output coupling capacity CL and headphone impedance RL used. CCHPx is determined in order for the lowpass cut-off frequency fC and lowpass boost frequency fBOOST to roughly correspond. The recommended constants are CL = 100µF, when RL = 16Ω and CCHPx = 6800pF. The chart below shows the frequency characteristics (calculated values) during recommended constant use. 10 5 Amp Output 0 -5 After correction Gain [dB] -10 Before correction -15 -20 -25 -30 -35 -40 1 10 100 1000 10000 100000 Frequency [Hz] Fig.16 Low pass Correction Circuit Frequency Characteristics www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 8/13 2010.09 - Rev.A Technical Note BU7861KN ●Recommended circuits PVSS DVSS PVDD AVSS DVDD COMIN PVCOM 1µ CPOP 0.1µ 1µ 1µ 1µ + + SMUTE AUDRXD + + 1µ AUDCLK AUDTXD RSTB AUDCS TXCOM RXCOM AVDD CPU MICB_1 MICB_2 MIC_BIAS MIC BIAS VREF/COMMON CPU I/F VDD/VSS SMUTE POP MICO MICIN_C MICIN_1 MICIN_2 16step MIC_MT + + MIC_SEL TX_TEST1 TX_VOL BPF A/D +6～-8dB EXTIN EXTIN_MT DSPCLK DSPIN RX_TEST1 Tx_testline Rx_testline EXTOUT TX_TEST2 ST_VOL ST_MT REC_MT -18～-42dB Gain=3.2dB 32step D/A + RX_VOL + VIC_MT 0～-30dB 32Ω PLLLPF 0.01µ PLL MEL_VOL FSYNC MEL_MT + Gain=3.2dB SPVIC_MT 32step + SPRX_VOL + TONE_MT SPMEL_VOL SPMEL_MT 16step 0～-28dB 0～-30dB HPR_TST AIN_MT HPL_TST 8step HPL_MT +14～0dB HSJR_MT + - HP_RI HP2_VOL + - SDI + DIG_MT HP_VOL + HP2_VOL 8step HPR_MT +14～0dB Digital I/F + 100µ + 6800pF 16Ω + Sound Source IC AIN_L SYSCLK 32step 0～-45dB 6800pF + AIN_VOL HSJL_MT HP_LI 100µ HP_L HP_R AIN_R SOUND_MT Digital Bass Boost SPOUT SP amp 16step +6～-8dB DTMF/ TONE 16bit DAC RECP 16Ω LPF RX_TEST2 32step +6～-54dB REC_TST 8Ω DSP I/F 8step EXTOUT RECN CPU DSPOUT LRCLK DSP BCLK 0.1µ CSTEP DACLO DACRO TEST Fig.17 Recommended Circuit www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 9/13 2010.09 - Rev.A Technical Note BU7861KN ●Input/output equivalent circuit figure Terminal Analog/ No I/O name Digital 1 MICO O 2 MICIN_C 3 MICIN_1 Terminal function Power source Circuit figure Analog MIC output AVDD E O Analog MIC Selection output AVDD E I Analog MIC1 input AVDD E 4 MICIN_2 I Analog MIC2 input AVDD E 5 EXTGND O Analog External ground AVDD E 6 EXTIN I Analog External input - H 7 AVDD - Analog Power source for analog 8 AVSS - Analog 9 SPOUT O Analog 10 AIN_L I Analog 11 AIN_R I Analog - I GND for analog AVDD I Speaker output AVDD E Melody input terminal Lch AVDD D Melody input terminal Rch AVDD D 12 DACLO I Analog DAC Lch LPF Condenser connected terminal AVDD F 13 DACRO I Analog DAC Rch LPF Condenser connected terminal AVDD F 14 TEST I Digital Please connect to DVSS DVDD A 15 RSTB I Digital L:Reset input DVDD A 16 LRCLK I Digital LRCLK terminal 44.1kHz(fs) for DAC DVDD B 17 SDI I Digital SDI terminal for DAC DVDD A 18 BCLK I Digital BCLK terminal DVDD B 19 SYSCLK I Digital SYSCLK terminal 11.2896MHz(256fs) for DAC DVDD B 20 DVDD - Digital The power source for digital - I 21 DVSS - Digital GND for digital DVDD I 2.8224MHz(64fs) for DAC 22 DSPCLK I Digital PCMClock input for PCM signal DVDD B 23 DSPOUT O Digital PCMsignal input DVDD C 24 DSPIN I Digital PCM signal input DVDD A 25 FSYNC I Digital 8kHz The reference clock for PLL DVDD B 26 PLLLPF O Analog Condenser connected terminal for PLL DVDD F 27 AUDCLK I Digital A AUDCS I Digital CPU I/F clock input terminal The chip selection terminal for CPU I/F (H active) DVDD 28 DVDD A 29 AUDTXD I Digital CPU I/FData input terminal DVDD A 30 AUDRXD O Digital CPU I/FData output terminal DVDD C 31 PVSS - Analog GND for Headphone and receiver PVDD I 32 HP_LI I Analog Lch head phone amplifier revision terminal in low limits PVDD F 33 HP_L O Analog Lch Head phone amplifier output terminal PVDD E 34 HP_R O Analog Rch Head phone amplifier output terminal PVDD E 35 HP_RI I Analog Rch head phone amplifier revision terminal in low limits PVDD F 36 PVDD - Analog Power source for Headphone and receiver - I 37 RECN O Analog Receiver output PVDD E 38 RECP O Analog Receiver output PVDD E 39 CSTEP O Analog Step noise decrease terminal when volume is variable AVDD F 40 CPOP O Analog Pop sound decrease terminal AVDD F 41 SMUTE O Analog Constant terminal when soft mute AVDD F 42 RXCOM O Analog Receiving standard voltage output AVDD E 43 TXCOM O Analog Transmit standard voltage output AVDD E 44 PVCOM O Analog PATH standard voltage output AVDD E 45 COMIN I Analog Standard voltage input terminal AVDD G 46 EXTOUT O Analog External output - H 47 MICB_1 O Analog MIC BIAS output1 AVDD E 48 MICB_2 O Analog MIC BIAS output2 AVDD E www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 10/13 2010.09 - Rev.A Technical Note BU7861KN PAD PAD A PAD C B PAD D F E PAD PAD PAD G PAD PAD I H Fig.18 Terminal equivalent circuit figure www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 11/13 2010.09 - Rev.A Technical Note BU7861KN ●Notes for use 1) Absolute maximum ratings When applied voltage (VDD and VIN), and the operating temperature range (Topr) and the like it exceeds absolute maximum rating, there is a possibility of destroying, Because it cannot specify destructive mode such as short circuit or opening, when special mode which exceeds absolute maximum rating is supposed, that physical safety measure such as a fuse should be implemented. 2) Recommendation operating range If it is this range, it is the range which almost can obtain the quality of according to expectation. Concerning electric quality ，being something which is guaranteed under condition of each item. Even inside the recommendation operating range, voltage, temperature characteristic is shown. 3) About the opposite connection of the power source connector There is a possibility of destroying LSI with the opposite connection to the power source connector. Please administer the measure such as the diode is inserted between power source and the power source terminal of LSI outside as the protection for opposite connection destruction. 4) About the power source line At the time of designing the baseplate pattern, as for wiring of the power source/GND line, please make sure to become low impedance. At that time, even digital type power source and analog type power source being the same electric potential, please separate digital type power source pattern and analog type power source pattern, control the turning of digital noise to the analog power source due to the common impedance of wiring pattern. Concerning the GND line, please consider the similar pattern design. In addition, concerning all power source terminals of LSI, the condenser is inserted between power source and the GND terminal, in the case of electrolysis condenser use, please decide constant with sufficient verification in regard to the fact of without being problem in qualities of the condenser which is used, such as the capacity pulling out happens in low temperature. 5) About GND voltage As for electric potential of the GND terminal regarding what ever working condition, please make sure to become lowest electric potential. In addition, please really verify that does not have the terminal which becomes electric potential below GND include transient phenomenon 6) About the short circuit between the terminal and error installing The occasion where you install in the set baseplate, please pay attention to the direction and the position gap of LSI sufficiently. when you install with mistake, there is a possibility of LSI destroying. In addition, there is a possibility of destruction concerning when it short-circuits e.g. due to the foreign material enters between the terminal and between terminal and power source and GND. 7) About the operation in the strong electromagnetic field As for the use in the strong electromagnetic field, being to be a possibility of doing the malfunction, please note. 8) About the testing with the set baseplate When inspecting with the set baseplate, the condenser is connected to the LSI terminal whose impedance is low, because there is a possibility of stress depending on LSI, please be sure to do discharge in every process. In addition, when installing and removing the tool in inspection process, by all means with power source as off to connect, to inspect, to remove. Furthermore, As a static electricity measure, please note to administer the earth and the conveyance and preservation in the case of assemble process sufficiently. 9) About each input terminal With respect to the structure of LSI, the parasitic element is formed inevitably by the relationship of electric potential. It causes the interference of circuit operation due to the fact that the parasitic element operates, the malfunction, even can become cause of destruction. Therefore, e.g., the voltage which is lower than GND in the input terminal is impressed, please note sufficiently not to do the method where the parasitic element operates. In addition, When not impress power supply voltage in LSI, please do not impress voltage in the input terminal. Furthermore, when power supply voltage is impressed even, as for each input terminal, please make voltage below power supply voltage or within guaranteed performance of electric quality. 10) About GND wiring pattern When there are both small signal GND and a heavy-current GND, it separates small signal GND pattern from heavy-current GND pattern, in order that the pattern wiring and the voltage change caused by large current do not change the voltage of small-signal GND, it is recommended to carry out the one-point grounding at the reference point of set.. Please be careful of not to fluctuate the GND wiring pattern of external parts 11) When in the external condenser, the ceramic condenser is used, please decide the constant on the consideration of the nominal capacity decrease caused by direct current bias and the change of the capacity due to temperature etc. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 12/13 2010.09 - Rev.A Technical Note BU7861KN ●Ordering part number B D 7 Part No. 8 6 1 K Part No. N - E Package KN: UQFN48 2 Packaging and forming specification E2: Embossed tape and reel UQFN48 7.0±0.1 Tape Embossed carrier tape (with dry pack) 24 Quantity 2500pcs 13 Direction of feed 25 36 7.2±0.1 <Tape and Reel information> 7.2 ± 0.1 7.0 ± 0.1 37 48 1 12 0.2 ± 0.05 0.22±0.05 +0.03 0.02 -0.02 0.05 +0.1 0.6 -0.3 0.05 M E2 The direction is the 1pin of product is at the upper left when you hold ( reel on the left hand and you pull out the tape on the right hand ) 0.95MAX (1.4) 5 .5 (0 ) 5 .4 (0 3(0 .2 ) ) 0.4 Notice : Do not use the dotted line area for soldering 1pin Reel (Unit : mm) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 13/13 Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. 2010.09 - Rev.A Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or malfunction for a variety of reasons. Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the instruction manual. The Products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us. ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. R1010A