CXA2561Q Dolby∗ B-C Type Noise Reduction System with Playback Equalizer Amplifier Description The CXA2561Q is an IC designed for use in car stereo cassette decks. Functions include Dolby B-C type noise reduction (NR) system, playback equalizer amplifier and music sensor into a single chip. Features • Few external parts • Small package (40-pin QFP) • Same pin configuration as for the Dolby B type NR system (CXA2560Q) and no Dolby NR system (CXA2559Q) • Dolby B-C type NR and playback equalizer amplifier into a single chip • FORWARD/REVERSE head select switch • Mute function • Music signal interval detection level can be set by the external resistors/capacitors (2 modes). • High-frequency cut-off of the music sensor circuit can be adjusted by the external capacitance. 40 pin QFP (Plastic) Structure Bipolar silicon monolithic IC Absolute Maximum Ratings • Supply voltage VCC • Operating temperature Topr • Storage temperature Tstg • Power dissipation PD Operating Condition Supply voltage VCC 12 –40 to +85 –65 to +150 430 V °C °C mW 7.8 to 11 V Applications • Car stereo cassette decks • Playback-only cassette decks ∗ This IC is available only to the licensees of Dolby Laboratories Licensing Corporation from whom licensing and applications information may be obtained. ∗ "Dolby" and the double D symbols are trademarks of Dolby Laboratories Licensing Corporation. Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. –1– E97439A79-PS CXA2561Q PBTC2 PBOUT2 OUTREF2 TAPEIN2 GND DIREF LINEOUT2 TCH2 TCL2 MSSW Block Diagram and Pin Configuration 30 29 28 27 26 25 24 23 22 21 7k/12k PBRIN2 31 32 NR 70µ/120µ PBFB2 300k T2 BIAS F2 MUTE PBFIN2 34 30k VCT MSMODE 19 DRSW 18 TAPESW 17 MUTESW 16 NRSW 15 NRMODE 14 MSOUT 13 MSTC 12 G1FB 11 G2FB MS MODE ×1 PBGND 33 20 OFF/ B/C 100k TAPE EQ 35 NR MODE 45k FWD/RVS PBREF 36 VCC 30k MS ON/ OFF LPF PBFIN1 37 DET F1 PBGND 38 ×1 300k F3 T1 70µ/120µ PBRIN1 39 100k 5 PBOUT1 OUTREF1 TAPEIN1 Vcc 6 7 8 9 10 MSLPF 4 TCL1 3 TCH1 2 LINEOUT1 1 PBTC1 NR NC 7k/12k PBFB1 40 OFF/ B/C –2– CXA2561Q Pin Description Pin No. Symbol (Ta = 25°C, VCC = 8.0V, DVCC = 5.0V) Typical pin voltage DC I/O AC I/O resistance Equivalent circuit Description Vcc 1 30 PBTC1 PBTC2 4.0V — — Playback equalizer amplifier capacitance. 147 — 1 30 GND 31 40 Vcc 2p 2 29 PBOUT1 PBOUT2 300k 4.0V –25dBm O — Playback equalizer amplifier output. 200 2 29 147 200 GND Vcc 3 28 OUTREF1 OUTREF2 200 4.0V — O — Output reference. (Vcc/2 output) 3 28 200 GND Vcc 4 27 TAPEIN1 TAPEIN2 4.0V –30dBm I 100kΩ 147 27 100k VGS 5 Vcc 8.0V — — — TAPE input. 4 30p GND Power supply. –3– CXA2561Q (Ta = 25°C, VCC = 8.0V, DVCC = 5.0V) Pin No. Symbol Typical pin voltage DC I/O AC I/O resistance Equivalent circuit Description Vcc 7 24 LINEOUT1 LINEOUT2 4.0V –6dBm O 200 147 — Line output. 7 200 24 22.5k GND Vcc 8 23 TCH1 TCH2 0.3V — — — 36k 147 Time constant for the HLS. 8 23 330k GND Vcc 9 22 TCL1 TCL2 0.3V — — — 13.5k 147 Time constant for the LLS. 9 22 480k GND Vcc 100k 10 MSLPF 4.0V — — Cut-off frequency adjustment of the music sensor LPF. 147 100k 10 64p GND –4– CXA2561Q (Ta = 25°C, VCC = 8.0V, DVCC = 5.0V) Pin No. Symbol Typical pin voltage DC AC I/O I/O resistance Equivalent circuit Description Vcc 11 12 G2FB G1FB Music signal interval detection level setting. 500 4.0V — — 147 — 11 500 12 GND Vcc 13 MSTC — — — 147 — Time constant for detecting the music signal interval. 853 13 10k GND Vcc 14 MSOUT 0.2V when a signal is detected; DVcc when no signal is detected. — O — Music sensor output. 14 GND 15 Dolby NR mode control. Low (open): Dolby B NR High: Dolby C NR NRMODE Vcc 17 MUTESW 0.0V when open. 18 TAPESW 15 — I 100kΩ 147 17 18 100k 21 GND 21 Mute function control. Low (open): Mute OFF High: Mute ON Playback equalizer amplifier control. Low (open): 70µs High: 120µs Music sensor control. Low (open): MS ON High: MS OFF MSSW –5– CXA2561Q (Ta = 25°C, VCC = 8.0V, DVCC = 5.0V) Pin No. Symbol Typical pin voltage DC I/O AC I/O resistance Equivalent circuit Description Vcc 16 NRSW 0.0V when open. 19 Dolby NR control. Low (open): NR OFF High: NR ON 147 — I 100kΩ 16 19 100k DRSW GND Head select control. Low (open): FORWARD High: REVERSE Vcc 20 MSMODE 0.0V when open. — I 100kΩ Music sensor mode control. Low (open): G1 High: G2 147 20 100k GND Vcc 25 DIREF 1.2V — — — Resistance for setting the reference current. (Connects 20kΩ between DIREF pin and GND for the standerd setting.) 147 25 GND 26 GND 0.0V — — — 31 40 PBFB2 PBFB1 4.0V –70dBm I — 32 39 PBRIN2 PBRIN1 Ground. 32 150 150 31 39 40 34 4.0V 34 37 –70dBm I Playback equializer amplifier feedback. Vcc 37 — 50p 50p GND PBFIN2 PBFIN1 –6– Playback equializer amplifier input. (REVERSE head connected) Playback equializer amplifier input. (FORWARD head connected) CXA2561Q (Ta = 25°C, VCC = 8.0V, DVCC = 5.0V) Pin No. 33 38 Symbol PBGND Typical pin voltage DC AC 0.0V — I/O I/O resistance — — Equivalent circuit Description Playback equializer amplifier ground. (Connect to ground.) Vcc 30k 147 35 VCT 4.0V — O — VGS ×1 35 Center. (Vcc/2 output) 45k 30k GND Vcc Playback equializer amplifier reference. (Vcc/2 output) 200 36 PBREF 4.0V — O — 36 200 GND 6 NC — — — — No connected. –7– CXA2561Q Electrical Characteristics Item (Ta = 25°C, VCC = 8.0V. DVCC = 5.0V) Symbol Operating voltage Vopr Current consumption ICC Measurement conditions No signal, NR OFF, MUTE OFF, 70µs, MS ON Min. Typ. Max. Unit 7.8 8.0 11.0 V 13.0 19.2 25.0 mA Dolby NR (0dB = Dolby level LINEOUT of –6dBm) –32.0 –30.0 –28.0 dBm TAPEIN input sensitivity VTIN TAPEIN 1kHz, LINEOUT 0dB, NR OFF B type decode boost characteristics 1 BP1 TAPEIN 500Hz, LINEOUT –25dB, NR B 1.4 2.9 4.4 dB B type decode boost characteristics 2 BP2 TAPEIN 2kHz, LINEOUT –25dB, NR B 5.5 7.0 8.5 dB B type decode boost characteristics 3 BP3 TAPEIN 5kHz, LINEOUT –25dB, NR B 3.9 5.4 6.9 dB B type decode boost characteristics 4 BP4 TAPEIN 10kHz, LINEOUT –40dB, NR B 9.7 10.4 11.9 dB B type decode boost characteristics 5 BP5 TAPEIN 10kHz, LINEOUT 0dB, NR B –1.1 0.4 1.9 dB C type decode boost characteristics 1 CP1 TAPEIN 500Hz, LINEOUT –60dB, NR C 14.2 16.2 18.2 dB C type decode boost characteristics 2 CP2 TAPEIN 500Hz, LINEOUT –25dB, NR C 7.2 9.2 11.2 dB C type decode boost characteristics 3 CP3 TAPEIN 2kHz, LINEOUT –60dB, NR C 18.7 20.7 22.7 dB C type decode boost characteristics 4 CP4 TAPEIN 2kHz, LINEOUT –25dB, NR C 5.4 7.4 9.4 dB C type decode boost characteristics 5 CP5 TAPEIN 5kHz, LINEOUT –25dB, NR C 3.5 5.5 7.5 dB C type decode boost characteristics 6 CP6 TAPEIN 10kHz, LINEOUT 0dB, NR C –5.5 –3.5 –1.5 dB Total harmonic distortion 1 THD1 TAPEIN 1kHz –20dBm, NR OFF, RL = 2.7kΩ — 0.01 0.2 % Total harmonic distortion 2 THD2 TAPEIN 1kHz –20dBm, NR B, RL = 2.7kΩ — 0.04 0.2 % Total harmonic distortion 3 THD3 TAPEIN 1kHz –20dBm, NR C, RL = 2.7kΩ — 0.05 0.3 % Decode S/N ratio 1 SN1 No signal, NR B, Rg = 5.1kΩ, CCIR/ARM filter used 77.0 87.0 — dB Decode S/N ratio 2 SN2 No signal, NR C, Rg = 5.1kΩ, CCIR/ARM filter used 80.0 82.0 — dB Signal handling SH1 TAPEIN 1kHz, NR OFF, RL = 2.7kΩ, THD = 1% 13.0 14.4 — dB Crosstalk between channels 1 CT1 TAPEIN 1kHz –24dBm, NR OFF, 1kHz BPF used –8– — –96.0 –70.0 dB CXA2561Q Item Symbol Measurement conditions Min. Max. Unit –110.0 –70.0 dB Typ. Mute characteristic MUTE TAPE IN 1kHz –24dBm, MUTE ON 1kHz BPF used, NR OFF Output DC offset voltage VOS1 No signal, NR OFF, difference from VCT –0.1 Playback equalizer amplifier PBREF reference output level PBIN 315Hz –70dBm, 120µs mode –27.0 –25.0 –23.0 dBm Playback equalizer amplifier F120 frequency response 1 PBIN 2.7kHz –58.5dBm, 120µs mode at 315Hz –1.5 0.0 1.5 dB Playback equalizer amplifier F70 frequency response 2 PBIN 4.5kHz –53.8dBm, 70µs mode at 315Hz –1.5 0.0 1.5 dB Signal handling PBIN 1kHz, 120µs mode, RL = 2.7kΩ, THD = 1% –10.0 –3.0 — dBm — 0.0 0.1 V Playback Equalizer Amplifier SH2 Total harmonic distortion THD4 PBIN 1kHz –52dBm, 120µs mode, RL = 2.7kΩ — 0.07 0.5 % S/N ratio No signal, 70µs mode, Rg = 680Ω, CCIR/ARM filter used 57.0 63.5 — dB Output DC offset voltage VOS2 No signal, 120µs mode, Rg = 680Ω, difference from VCT –1.0 0.0 1.0 V Crosstalk between channels CT4 PBIN 1kHz –52dBm, 120µs mode, 1kHz BPF used — –75.0 –70.0 dB Crosstalk between CT5 FORWARD and REVERSE PBIN 1kHz –52dBm, 120µs mode, 1kHz BPF used — –80.0 –70.0 dB SN3 Music Sensor Signal detection level 1 VMS1 TAPEIN 5kHz, MS ON, G1 mode, external constant of 39kΩ and 0.0047µF –43.0 –40.0 –37.0 dBm Signal detection level 2 VMS2 TAPEIN 5kHz, MS ON, G2 mode, external constant of 3.9kΩ and 0.47µF –63.0 –60.0 –57.0 dBm MS output leak current IOH No signal, MS OFF, G1 mode — 0.0 1.0 µA MS output saturation voltage VOL TAPEIN 5kHz –30dBm, MS ON, G1 mode, 1mA applied to MSOUT pin — 0.3 1.0 V Low level VIL Input voltage of NRMODE, NRSW, MUTESW, TAPESW, DRSW, MSMODE, MSSW 0.0 — 0.8 V High level VIH Input voltage of NRMODE, NRSW, MUTESW, TAPESW, DRSW, MSMODE, MSSW 2.5 — VCC V Logic Voltage –9– CXA2561Q S4 ∗R6 680 S3 C4 2.2µ ∗ R5 680 Power Supply 29 28 27 26 25 24 23 22 OUTREF2 TAPEIN2 GND DIREF LINEOUT2 TCH2 TCL2 33 PBGND TAPESW 18 34 PBFIN2 MUTESW 17 NRSW 16 CXA2561Q 36 PBREF MSOUT 14 ∗R3 38 PBGND 680 39 PBRIN1 MSTC 13 OUTREF1 TAPEIN1 VCC NC LINEOUT1 TCH1 TCL1 MSLPF 1 2 3 4 5 6 7 8 9 10 ∗R28 50k OFF: 0dB ON: 30dB S27 DRSW H/L "A" WTG S26 TAPESW H/L MUTESW H/L DIN Audio S25 NRSW H/L NRMODE H/L 1kHz BPF S24 +20dB DVCC R22 10k S16 ∗ R7 2.7k C8 2.2µ C11 1µ G2FB 11 S23 C24 0.1µ +20dB R17 1MEG ∗ R15 39k C23 4.7n ∗ R14 3.9k C22 0.47µ AC Voltmeter Distortion Analyzer C16 2.2µ C18 0.1µ C20 0.068 µ C15 270p Oscilloscope S11 C10 22µ R12 2.7k S9 40 PBFB1 ∗ R9 5.1k C6 0.01µ G1FB 12 S7 ∗ R1 270 PBOUT1 A S17 CCIR/ARM S5 DC Ammeter C1 2.2µ R23 10k DC Voltmeter MSMODE H/L R16 100k PBTC1 S1 NRMODE 15 37 PBFIN1 ∗R4 680 S18 GND GND DRSW 19 C2 2.2µ GND S19 R24 100 MSSW H/L MSMODE 20 35 VCT S2 S20 R25 10k 21 32 PBRIN2 C3 22µ VCC S21 S22 PBOUT2 C5 2.2µ C21 0.068µ 30 31 PBFB2 ∗ R2 270 C19 0.1µ C17 2.2µ PBTC2 C7 0.01µ Audio SG C12 1µ R27 10k R26 100 0dB or 30dB Amp MSSW S6 R8 2.7k ∗ R11 20k ∗R10 5.1k S8 ∗ C9 2.2µ ∗R13 2.7k S10 Electrical Characteristics Measurement Circuit R21 10k S15 R20 100 S14 R19 10k S13 R18 100 S12 Notes1. Resistor tolerance 2. Capacitor tolerance Coupling Capacitor – 10 – ±5% ∗ : ±1% ±5% ∗ : ±2% ±10% CXA2561Q Application Circuit VCT PBREF PBFB1 TCL2 BIAS 30k MUTESW 17 TAPE EQ 35 NR MODE 45k NRSW 16 FWD/RVS 36 NRMODE 15 VCC LPF 37 DET MS ON/ OFF ×1 F3 39 13 12 7k/12k 40 2 PBOUT1 PBTC1 1 R7 10k OFF/ B/C 100k 11 NR 5 4 3 C8 0.1µ C6 0.01µ MSTC T1 300k Vcc C10 22µ GND 6 7 C11 0.47µ 9 8 R13 100k G1FB C18 0.1µ G2FB R12 1MEG DVCC 10 R10 3.9k C13 C15 0.1µ 0.068 µ C17 120p C19 0.47µ GND LINEOUT1 To Microcomputer MSOUT 14 F1 38 From Microcomputer TAPESW 18 MUTE 34 NC PBRIN1 DRSW MS MODE Vcc R5 180 PBGND MSSW LINEOUT2 DIREF TAPEIN2 GND T2 F2 70µ/120µ C1 470p ×1 33 MSMODE 20 OFF/ B/C 19 TAPEIN1 R1 100k GND PBFIN1 R2 100k RVS1 NR 100k 30k C2 470p FWD1 300k 21 22 MSLPF C5 22µ 32 C16 0.068µ TCL1 PBFIN2 GND C3 470p 31 OUTREF1 FWD2 PBGND 23 24 TCH1 R3 100k PBRIN2 25 LINEOUT1 R4 100k GND RVS2 26 27 28 C12 C14 0.47µ 0.1µ 7k/12k 70µ/120µ PBFB2 29 R9 20k GND GND GND R11 39k C20 4.7n GND GND Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same. – 11 – GND 30 R6 180 OUTREF2 PBOUT2 PBTC2 C9 0.1µ TCH2 C7 0.01µ C4 470p LINEOUT2 GND GND GND R8 10k CXA2561Q Description of Operation 1. Signal route The CXA2561Q signal circuit is shown in Fig. 1. 24dB NR OFF NR ON 24dB PB IN FWD MUTE ON MUTE OFF AMP1 RVS AMP2 300k MUTE OFF 7k/12k NR MUTE ON 100k VGS VGS PBFB PBTC PBOUT TAPEIN (–30dBm) LINEOUT (–6dBm Dolby level) Fig. 1. Signal route block diagram 2. Gain adjustment method Adjust the playback equalizer amplifier gain so that –6dBm (Dolby level) is output on LINEOUT (Pins 7 and 24) by playing back the reference tape for Dolby level adjustment. Adjustment should be performed according to the rules of Dolby Laboratories Corporation because this IC has the built-in Dolby NR system. Dolby level is defined as 200nWb/m measured according to the ANSI high efficiency head method. 0 –6dBm (Dolby level) –10 PBOUT –20 LINEOUT –30dBm –30 VR adjustment –40 TAPEIN –50 –60 –70 400Hz 200nWb/m: Dolby Level reference tape –80 (dBm) PBIN (HEAD) Fig. 2. Level diagram – 12 – Use the following reference tapes specified by Dolby Laboratories Corporation. 1. A-bex Laboratories, Inc. (part no. TCC-130) 2. BASF (product code 09797 XE) 3. Kaneon Corp. (LC Engineering part no. LCT-7001) 4. Standard Tape Laboratory (catalogue no. 28) 5. TEAC Corporation, Japan (part no. MTT150) 6. TEAC Corporation of America (part no. MTT150) 7. Victor Company of Japan, Ltd. (part no. TMT-6130, VTT-727) 8. Sony Corporation (part no. TY-256) CXA2561Q 3. Playback equalizer amplifier PB IN FWD AMP1 RVS 300k Ri PBTC PBFB PBOUT OUTREF to TAPEIN PBREF R1 C1 0.01µ Fig. 3. Playback equalizer amplifier block diagram The CXA2561Q configures the playback equalizer amplifier by connecting the external capacitor C1 and resister R1 shown in Fig. 3. Two systems (FORWARD and REVERSE) of playback head input are provided for each channel. The FORWARD input pin is selected when DRSW (Pin 19) is Low; REVERSE is selected when DRSW is High. The playback equalizer amplifier frequency response can be set in two levels (70µs/ 120µs). When TAPESW (Pin 18) is Low, Ri is 7kΩ; when TAPESW is High, Ri is 12kΩ. The gain can be adjusted by connecting VR between PBOUT (Pins 2 and 29) and OUTREF (Pins 3 and 28); or by using VR for the external R1. T1 Gain [dB] G1 G1 = 20 log –6dB/oct G2 = G3 = 20 log G2 T3 G3 f2 f3 R1 + Ri//300k R1 T1 = C1 · (300k + Ri) T2 f1 R1 + 300k R1 Frequency [Hz] Fig. 4. Playback equalizer amplifier frequency response – 13 – T2, T3 = C1 · (R1 · 300k + 300k · Ri + Ri · R1) R1 + R2 CXA2561Q 4. Music sensor TAPEIN2 D1 DVcc ×1 D2 R10 Vcc R3 127k R2 10k ×5 R4 100k AMP1 R1 10k Fullwave rectifier MSOUT Smoother AMP3 AMP2 C1 64p Q1 R5B 10k VGS ×1 TAPEIN1 R5A 29k G1FB MSLPF C2 G2FB C3 C4 R7 R8 R6 1k 0.775V for signal detection 0.616V for no signal detection MSTC R9 C5 Fig. 5. Music sensor block diagram (1) Adjustment of music signal detection level Adjustment the exrernal resistors R7 and R8 to adjust the music signal interval detection level. The signal detection level v1 and no signal detection level v2 are expressed by the following equations. v1 = –39 + 20log (39k/Rext) [dBm] Rext: R7 or R8 v2 = v1 – 2 [dBm] (2) Low-frequency cut-off adjustment of music sensor Adjust the external resistors R7, R8 and the external capacitors C3, C4 to adjust the low-frequency cut-off. The low-frequency cut-off is expressed by the following equation. fc1 = 1/ (2π · Cext · Rext) Cex, Rext: C3, R7 or C4, R8 (3) High-frequency cut-off adjustment of music sensor Adjust the capacitor C2 to MSLPF (Pin 10) to adjust the high-frequency cut-off. The high-frequency cut-off is expressed by the following equation. fc2 = 1/ (2π · (64p + C2) · 100k) The high-frequency cut-off is approximately 25kHz when MSLPF is left open. (4) Response time adjustment Adjust the external resistor R9 and the external capacitor C5 to adjust the response time. The response time for signal detection depends on the internal resister R6 and the external capacitor C5. The response time for no signal detection depends on the external resistor R9 and the external capacitor C5. – 14 – CXA2561Q 5. Operating mode control method The CXA2561Q has a Dolby NR mode select switch (NRMODE), Dolby NR switch (NRSW), mute switch (MUTE SW), playback equalizer amplifier select switch (TAPESW), head input select switch (DRSW), music sensor mode select switch (MSMODE) and music sensor switch (MSSW). The operating modes for each switch are shown in the following table. Pin No. Pin voltage Pin name Low (OPEN) High Dolby B type NR Dolby C type NR Dolby NR OFF Dolby NR ON 15 NRMODE 16 NRSW 17 MUTESW MUTE OFF MUTE ON 18 TAPESW 70µs 120µs 19 DRSW PBIN FORWARD PBIN REVERSE 20 MSMODE G1 G2 21 MSSW MS ON MS OFF Notes on Operation 1. DIREF pin resistance The current on DIREF (Pin 25) is the reference for the Dolby NR static characteristic, playback equalizer amplifier resistor 7kΩ/12kΩ and the comparator threshold value of the music sensor. Use the resistor with high accuracy for connecting to the DIREF pin. (The resistance accuracy of 2% <metal-oxide> is recommended.) 2. Dolby NR The Dolby NR attack/recovery time is determined by the capacitance connected to TCH (Pins 8 and 23), and TCL (Pin 9 and 22). Use the parts, connected to these pins, with high accuracy and small temperature characteristics. (The capacitance accuracy of 10% <film> is recommended.) 3. Playback equalizer amplifier The playback equalizer amplifier characteristics are determined by the resistor connected between the IC internal resistor and PBFB (Pins 31 and 40) and the capacitor connected between PBFB and PBTC (Pins 1 and 30). Use the parts which satisfies the accuracy required for the playback equalizer amplifier. 4. Music sensor The resistance and capacitance connected to G2FB (Pin 11) and G1FB (Pin 12) determine the detection level and high-frequency cut-off. The response time is determined by the resistance and capacitance connected to MSTC (Pin 13). Use the parts which satisfies the accuracy required for the music sensor. – 15 – CXA2561Q Example of Representative Characteristics Supply voltage vs. Current consumption 21.0 Ta = 25°C Current consumption [mA] 20.8 20.6 20.4 20.2 No signal NR OFF MUTE OFF 70µs MS ON 20.0 19.8 5.0 6.0 7.0 9.0 10.0 8.0 Supply voltage [V] 11.0 12.0 Playback equalizer amplifier frequency response 65 Ta = 25°C 60 PBFIN 47µ 50 680 40 35 VCC = 8.0V Input : PBFIN1 Output : PBOUT1 PBFB 25 12 PBOUT 2.2µ PBREF 270 1k 100 7k/12k PBTC PBREF 120µs 70µs 30 Decode boost [dB] 300k 45 0.01µ 10k Frequency [Hz] Fig. 6 Measurement circuit for playback equalizer amplifier frequency response B type decode boost characteristics C type decode boost characteristics VCC = 8.0V 0dB = Dolby Level 20 –40dB 10 8 Decode boost [dB] Gain [dB] 55 –30dB 6 –20dB 4 Ta = 25°C 2 –10dB 0 0dB 100 1k Frequency [Hz] –50dB 12 –40dB 8 –30dB 4 –20dB 0 –10dB Ta = 25°C 0dB 100 – 16 – –60dB 16 –4 10k VCC = 8.0V 0dB = Dolby Level 1k Frequency [Hz] 10k CXA2561Q Total harmonic distortion (playback equalizer amplifier) Total harmonic distortion [%] 101 Ta = 25°C VCC = 8.0V Input : PBFIN1 Output : PBOUT1 RL = 2.7kΩ f = 10kHz f = 1kHz 100 f = 100Hz 10–1 –24 –20 –16 –12 –8 –4 0 Output level [dBm] 4 6 B type total harmonic distortion (NR OFF included) C type total harmonic distortion VCC = 8.0V Input : TAPEIN1 Output : LINEOUT1 RL = 2.7kΩ 0dB = Dolby Level Ta = 25°C VCC = 8.0V Input : TAPEIN1 Output : LINEOUT1 RL = 2.7kΩ 0dB = Dolby Level NR C f = 10kHz 100 NR B f = 10kHz 10–1 Total harmonic distortion [%] Total harmonic distortion [%] 100 Ta = 25°C NR B f = 100Hz NR C f = 100Hz 10–1 NR C f = 1kHz NR B f = 1kHz NR OFF f = 1kHz 10–2 –10 –6 –2 10–2 2 6 10 –10 14 Output level [dBm] –6 –2 2 6 Output level [dB] – 17 – 10 14 CXA2561Q Ripple rejection ratio (PBOUT) Ta = 25°C VCC = 8.0V RL = 2.7kΩ –25 Ripple rejection ratio [dB] Ripple rejection ratio [dB] –40 Ripple rejection ratio (LINEOUT) –45 –50 –55 –60 –65 100 1k Frequency [Hz] Ta = 25°C VCC = 8.0V RL = 2.7kΩ NR OFF –30 –35 –40 NR B –45 NR C –50 –55 10k 100 1k Frequency [Hz] 10k Crosstalk between channels (1ch → 2ch) Crosstalk [dB] 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 VCC = 8.0V Input : PBFIN1 Output : LINEOUT2 (LINEOUT1 level = 0dBm) NR OFF Ta = 25°C PBFIN 680 Input level [dBm] –20 270 1k Frequency [Hz] 2.2µ Fig. 7 Measurement circuit for crosstalk between channels Ta = 25°C VCC = 8.0V Input : TAPEIN1 G1 : R = 39kΩ, C = 4.7nF G2 : R = 3.9kΩ, C = 0.47µF G1 Blank detection level Signal detection level G2 –60 Blank detection level 100 1k Frequency [Hz] 0.1µ 10k Signal detection level –50 LINEOUT PBREF –30 –40 TAPEIN PBREF Frequency response for signal and blank detection level –10 300k 7k PBTC PBFB PBOUT 100 –0 24dB 47µ 10k – 18 – CXA2561Q Signal detection response time (G1) Signal detection response time (G2) Input TAPEIN1 f = 5kHz – 38dBm Ta = 25°C Input TAPEIN1 f = 5kHz – 58dBm Ta = 25°C 1.0 1.0 TAPEIN1 TAPEIN1 MSOUT Response time [ms] Response time [ms] MSOUT Response time MSOUT 14 V CC 100k 1MEG MSTC 13 C G1FB 12 0.1 39k 0.047µ 0.01 0.01 C 0.1 3.9k 0.47µF 1.0 0.1 MSTC capacitance [µF] Blank detection response time (G1) Signal detection response time (G2) Ta = 25°C Input TAPEIN1 f = 5kHz 1000 –10dBm TAPEIN1 MSOUT 14 Response time [ms] Response time V CC 100k –20dBm MSTC 13 G1FB 12 39k 0.0047µ 100 Ta = 25°C –30dBm TAPEIN1 MSOUT MSOUT Response time [ms] G2FB 11 MSTC capacitance [µF] Input TAPEIN1 f = 5kHz 1000 100k 1MEG MSTC 13 0.01 0.01 1.0 0.1 Response time MSOUT 14 –30dBm 10 Response time MSOUT 14 100k –40dBm MSTC 13 G2FB 11 3.9k 0.47µF 100 –50dBm 10 0.01 0.1 MSTC time constant [s] 1.0 0.01 – 19 – 0.1 MSTC time constant [s] 1.0 CXA2561Q Package Outline Unit: mm 40PIN QFP (PLASTIC) + 0.35 1.5 – 0.15 + 0.1 0.127 – 0.05 9.0 ± 0.4 + 0.4 7.0 – 0.1 0.1 21 30 20 31 A 11 40 1 + 0.15 0.3 – 0.1 0.65 10 ± 0.12 M 0.5 ± 0.2 (8.0) + 0.15 0.1 – 0.1 DETAIL A PACKAGE STRUCTURE PACKAGE MATERIAL EPOXY RESIN SONY CODE QFP-40P-L01 LEAD TREATMENT SOLDER / PALLADIUM PLATING EIAJ CODE ∗QFP040-P-0707 LEAD MATERIAL COPPER / 42 ALLOY PACKAGE WEIGHT 0.2g JEDEC CODE NOTE : PALLADIUM PLATING This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame). – 20 –