Multimedia ICs Analog signal I / O interface for portable audio applications BH7760KV The BH7760KV contains the complete audio I / O analog block on a single-chip IC. Therefore, all necessary functions for a DVC audio analog I / O interface are provided on one chip. Applications •Portable audio applications •1)Features Contains the input amplifier, wind noise deletion filter, ALC, 30kHz LPF, line amplifier, stereo headphone amplifier, and BTL monaural speaker amplifier required to configure a analog signal I / O interface (audio I / O) all on one chip. 2) With the internal 3-line serial control decoder circuit, serial control enables the setting of the various modes for the IC. •Absolute maximum ratings (Ta = 25°C) Parameter Symbol VCC Applied voltage Limits Unit + 7.0 V Pd 900∗ Operating temperature Topr – 10 ~ + 70 °C Storage temperature Tstg – 55 ~ + 125 °C Power dissipation mW ∗ Reduced by 9.0mW for each increase in Ta of 1°C over 25°C with the IC unmounted. ∗ When mounted on a 70mm × 70mm × 1.6mm glass epoxy board. •Recommended operating conditions (Ta = 25°C) Parameter Power supply voltage (analog system) Power supply voltage (for SP) Power supply voltage (digital system) Symbol Limits Unit AVcc + 4.0 ~ + 6.0 V SPVcc + 4.0 ~ + 6.0 V DVcc + 2.7 ~ + 3.3 V 䊊 Not designed for radiation resistance. 1 Multimedia ICs BH7760KV EXT NFB L INT NFB L EXT NFB R INT NFB R WINDC IN L WINDC1 L WINDC2 L WINDC IN R WINDC1 R WINDC2 R FADE CTRL FADE DELAY •Block diagram 36 35 34 33 32 31 30 29 28 27 26 25 A INT EXT FADER INT INT MIC IN L WIND CUT 37 24 ALC FILTER 23 REC NFB L 22 REC NFB R 21 REC OUT L 20 REC OUT R LPF 19 PB IN L LPF 18 PB IN R 17 DVCC 16 DGND 15 DATA IN 14 CLK 13 CS + 21.3dB AMP ALC EXT INT MIC IN R 38 MIC SEL 39 A EXT EXT MIC IN L EXT MIC IN R 40 INT INT WIND CUT + 21.3dB AMP ALC 41 EXT LINE OUT L 42 AMP LINE OUT R 43 AMP MUTE OUT 44 HP OUT L + 8.7dB + 8.7dB HPAMP 45 ATT + 8.7dB + HP OUT R SP OUT 1 HPAMP 46 SERIAL DATA I/F ATT + 8.7dB SPAMP 47 BIAS AVCC SP OUT 2 VREF 48 POWER ON / OFF MUTE GEN 2 1 2 3 4 5 6 7 8 9 10 11 12 SP VCC SP ON / OFF SP GND BEEP IN MIX OUT MUTEGENC MUTE CTRL BIAS VREFC AGND1 AGND2 AVCC SPAMP Multimedia ICs BH7760KV •Pin descriptions Pin No. Pin name 1 SP VCC 2 SP ON / OFF 3 Function Pin voltage Pin type — Speaker VCC 5.0V SP ON / OFF control 5.0V SP GND Speaker GND 0.0V 4 BEEP IN Speaker input 2.5V B (NPN) 5 MIX OUT HP amplifier L / R mixer output 2.5V EF (NPN) 6 MUTE GENC POWER ON MUTE delay 2.5V EF (NPN) 7 MUTE CTRL Mute control input — 100kΩ PULL UP — 10kΩ 8 BIAS Bias 2.5V EF (NPN) 9 VREFC VCC / 2 reference 2.5V 100kΩ 10 AGND1 Analog GND1 0.0V — 11 AGND2 Analog GND2 0.0V — 12 AVCC Analog VCC 5.0V 13 CS Serial control CS input — G ~ 10kΩ 14 CLK Serial control CLK input — G ~ 10kΩ 15 DATAIN Serial control DATE input — G ~ 10kΩ 16 DGND Serial control GND 0.0V Serial control VCC 3.0V PB input 2.5V — — 17 DVCC 19,18 PBIN L / R 21,20 REC OUT L / R REC output 2.5V EF (P-P) 23,22 REC NFB L / R ALC amplifier feedback 2.5V B (NPN) ~ 3.9kΩ 0.0V EF (NPN) ~ 200Ω — B (NPN) ~ 1kΩ 24 ALC FILTER ALC constant setting 25 FADE DELAY FADE delay — 75kΩ 26 FADE CTRL FADE control input 0.0V B (NPN) ~ 10kΩ 32,29 WIND CIN L / R WIND CUT FILTER input 2.5V EF (P-P) 31,28 WIND C1 L / R WIND CUT FILTER constant 1 2.5V EF (NPN) ~ 8.2kΩ 30,27 WIND C2 L / R WIND CUT FILTER constant 2 2.5V B (NPN) Note: EF: Emitter follower, P-P: Push-pull, B: Base, G: gate. 3 Multimedia ICs BH7760KV •Pin descriptions Pin No. Pin name 36, 34 EXT NFB L / R MIC amplifier feedback (EXT) 2.5V B (NPN) INT NFB L / R MIC amplifier feedback (INT) 2.5V B (NPN) 2.5V 75kΩ 5.0V 200kΩ PULL UP 2.5V 75kΩ 2.5V EF (NPN) — C (NPN) 35, 33 37, 38 Function Pin voltage INT MIC IN L / R INT MIC input MIC SEL control input MIC SEL 39 Pin type 40, 41 EXT MIC IN L / R EXT MIC input 42, 43 LINE OUT L / R 44 MUTE OUT 45, 46 HP OUT L / R HP amplifier output 2.5V EF (NPN) 47 SP OUT 1 BTL speaker output (forward side) 2.5V EF (NPN) 48 SP OUT 2 BTL speaker output (reverse side) 2.5V EF (NPN) LINE amplifier output MUTE output Note: EF: Emitter follower, P-P: Push-pull, B: Base, G: gate. •Electrical characteristics (unless otherwise noted, AV Parameter CC = SPVCC, VCC = 5.0V, DVCC = 3.0V, Ta = 25°C) Symbol Min. Typ. Max. Unit Conditions Circuit current ICC 6.0 11.0 20.0 mA No input Circuit current power save ICCS 0.8 1.6 3.2 mA No input and during power save [Circuit current] [MIC amplifier] INPUT: EXT MIC IN L / R, INT MIC IN L / R Output voltage level ALS level VOREC OUTPUT: REC OUT L / R – 21.7 – 18.7 – 15.7 dBV VIN = – 70.0dBV, with MIC amplifier at 30dB VORECALC – 10.7 – 6.7 – 2.7 dBV VIN = – 50.0dBV, with MIC amplifier at 30dB [Line amplifier (during EE)] INPUT: EXT MIC IN L / R, INT MIC IN L / R OUTPUT: LINE OUT L / R dBV VIN = – 70.0dBV, with MIC amplifier at 30dB % VIN = – 70.0dBV, with MIC amplifier at 30dB∗1 – 10.0 – 7.0 Distortion THDLINEEE — 0.50 1.50 Output residual noise VONLINEEE — – 60.0 – 50.0 dBV With MIC amplifier at 30dB∗2 Crosstalk CTLINEEE — – 31.0 – 20.0 dBV VIN = – 60.0dBV, with MIC amplifier at 30dB∗1 Maximum output level VOMLINEEE – 3.0 2.3 dBV THD = 3%, ∗1, with ALC OFF Output voltage level VOLINEEE – 13.0 [Line amplifier (during PB)] INPUT: PB IN L / R Output voltage level Distortion VOLINEPB THDLINEPB – 12.0 — — OUTPUT: LINE OUT L / R dBV – 8.0 0.017 0.20 % VIN = – 18.7dBV∗1 VOLINE L / R difference Channel balance CBLINEPB – 0.5 0.0 + 0.5 dB Output residual noise VONLINEPB — – 90.0 – 73.0 dBV ∗1 B.W. = 400Hz to 30kHz ∗2 DIN AUDIO 4 VIN = – 18.7dBV – 10.0 ∗2 Multimedia ICs BH7760KV •Electrical characteristics (unless otherwise noted, AV Parameter Symbol [HP amplifier] INPUT: PB IN L / R Min. CC Typ. = SP, VCC = 5.0V, DVCC = 3.0V, Ta = 25°C) Max. Unit Conditions OUTPUT: HP OUT L / R dBV VIN = – 18.7dBV – 10.0 – 7.5 Distortion THDHP — 0.7 2.0 % Maximum output level VOMHP – 3.0 – 1.2 — dBV THD = 3%∗1 Output residual noise VONHP — – 91.0 – 73.0 dBV Rg = 1kΩ∗2 Crosstalk between channels CTHP — – 87.0 – 70.0 dBV VIN = – 8.7dBV∗2 Muting level MTHP — – 100.0 – 83.0 dBV VIN = – 8.7dBV, V7 = H∗2 – 7.5 dBV VIN = – 18.7dBV dBV VIN = – 10.0dBV Output voltage level VOHP [MIX OUT] INPUT: PB IN L / R Output voltage level VIN = – 18.7dBV∗1 OUTPUT: MIX OUT VOMIX [SP amplifier] INPUT: BEEP IN Output voltage level – 12.5 – 12.5 – 10.0 OUTPUT: SP OUT 1 / 2 (BML) VOSP – 4.5 – 1.0 + 2.5 VIN = – 10.0dBV∗1 Distortion THDSP — 0.8 2.0 % Maximum output level VOMSP + 3.0 + 4.8 — dBV THD = 10%∗1 Output residual noise VONSP — – 95.0 – 80.0 dBV Rg = 1kΩ∗2 VOOFFSP — – 65.0 – 55.0 dBV VIN = – 6.0dBV∗2 Low mode hold voltage VH14L 0.0 — 0.5 V — High mode hold voltage VH14H 1.8 — DVCC V — Low mode hold voltage VH15L 0.0 — 0.5 V — High mode hold voltage VH15H 1.8 — DVCC V — Low mode hold voltage VH16L 0.0 — 0.5 V — High mode hold voltage VH16H 1.8 — DVCC V — SP off hold voltage VH3L 0.0 — 0.5 V — SP on hold voltage VH3H 2.0 — AVCC V — MUTE hold voltage VH7L 0.0 — 0.5 V — MUTE hold voltage VH7H 2.0 — AVCC V — FADE off hold voltage VH26L 0.0 — 0.5 V — FADE on hold voltage VH26H 2.0 — AVCC V — EXT hold voltage VH39L 0.0 — 0.5 V — INT hold voltage VH39H 2.0 — AVCC V — SP off level [Control mode hold voltage] 〈CS〉 〈CLK〉 〈DATA IN〉 〈SP ON / OFF〉 〈MUTE control〉 〈FADE control〉 〈MIC SEL〉 ∗1 B.W. = 400Hz to 30kHz ∗2 DIN AUDIO 5 Multimedia ICs BH7760KV •Measurement circuit 1k 1k 1k 1k 33k 0.047µ 0.047µ 33k FADE CTRL BIAS 33k 0.047µ 0.047µ 10µ + 33k 36 35 34 33 32 31 30 29 28 INT EXT 27 26 25 A FADER 1k 2.2M + 21.3dB AMP ALC 24 1µ MIC SEL 38 23 A 39 EXT 22 + 1µ 40 INT + WIND CUT 1k 1µ 41 20 EXT + 22k 1µ AMP 42 LPF + 8.7dB 19 + LINE OUT R 22k 1µ MUTE OUT AMP 43 LPF + 8.7dB 44 45 + HPAMP + HP OUT R 100 ATT + 8.7dB 47µ SP OUT 1 46 SERIAL DATA I/F ATT + 8.7dB SPAMP 47 BIAS 8 VREF 48 POWER ON / OFF MUTE GEN 1 2 3 4 5 6 0.47µ 0.47µ 1k 15k 10µ 10 11 10µ 22k + MIX OUT BEEP IN SP GND SP ON / OFF SP VCC 9 + Fig.1 6 8 100µ BIAS 12 + + 100µ 7 + 100µ AGND1 SPAMP MUTE CTRL SP OUT 2 22k 1µ 22k 1µ 1k 1µ 1k REC OUT R PB IN L PB IN R DVCC + 100µ 16 DGND 15 DATA IN 14 CLK 13 CS AVCC AVCC 47µ AGND2 100 18 17 HPAMP + HP OUT L REC OUT L 1µ + LINE OUT L ALC 21 + EXT MIC IN R + 21.3dB AMP + 1k 22µ INT + EXT MIC IN L 4.7µ 22µ EXT + INT MIC IN R WIND CUT 37 + 1k 1µ + INT MIC IN L + + INT Multimedia ICs BH7760KV •External dimensions (Units: mm) 37 24 48 13 1.4 ± 0.1 0.1 1 0.5 12 0.5 9.0 ± 0.3 7.0 ± 0.2 9.0 ± 0.3 7.0 ± 0.2 36 25 0.125 ± 0.1 0.2 ± 0.1 0.1 VQFP48C 7