01W092A Audio driver for cellular phones BH7823AFVM Description Dimension (Units : mm) BH7823AFVM is an audio driver IC developed for mobile audio appliances such as cellular phones. This driver has achieved low voltage driving and low power consumption. Audio signal can be generated from any various audio appliances. (This speaker can drive the load of 4 , 8 , and 12 .) Achieve high output power supply by applying BTL. Suspend contol can keep the circuit current at 0µA (Typ.) when it is not in use. 5 1 4 0.29 ± 0.15 0.6 ± 0.2 8 2.8 ± 0.1 4.0 ± 0.2 2.9 ± 0.1 0.145 +0.05 -0.03 0.9Max. 0.75 ± 0.05 0.08 ± 0.05 0.475 0.22 +0.05 -0.04 0.65 0.08 M 0.08 S MSOP8 Features 1) BTL monaural audio power amplifier 2) High power 500mW/8 /BTL output 3) Wide operating voltage range 4) For active/shutdown MODE 5) Built-in anti-pop circuit/thermal shutdown circuit 6) Perfect for cellular phones, palm PC, hand-held appliances Applications Audio driver for cellular phones Absolute Maximum Ratings (Ta=25°C) Parameter Apllied voltage Symbol Limits VccMAX 6.0 Power dissipation Pd Operating temperature range Topr –20 Storage temperature range Tstg –55 Unit V 370 * mW ~ ~ +70 °C °C +125 *Derating : 3.5mW/°C for operation above Ta=25°C *PCB (70mmx70mm, t=1.6mm) glass epoxy mounting. June, 2001 Recommended Operating Conditions (Ta=25°C) Parameter Operating voltage range Symbol Min. Typ. Max. Unit VCCS 2.8 – 5.5 V *This product is not designed for protection against radioactive rays. Electrical characteristics (Unless otherwise noted; Ta=25°C, Vcc=3.6V, f=1kHz, RL=8 ) Symbol Min. Typ. Max. Unit Circuit current 1 Parameter ICC1 – 3 7 mA No signal Active MODE Conditions Circuit current 2 ICC2 – 0 2 µA No signal Suspend MODE Voltage gain 1 GV1 9.5 11.5 13.5 dB VIN=–20dBV 1st OPAMP gain Voltage gain 2 GV2 –2.0 0 2.0 dB VIN=–20dBV 2nd OPAMP gain Maximum output voltage VOM 4.8 6.8 – dBV DSTN=10% BTL *1 Output distortion rate DSTN – 0.2 1.0 % VIN=–20dBV SE *1 Output residual noise VNO – –94 –80 dBV No signal, SE Active MODE *2 Suspend attenuation GS – –107 –80 dBV VIN=–20dBV BTL *2 VBIAS 1.6 1.8 2.0 V 2PIN DC voltage Suspend hold voltage/ H VSH VCC/3+0.8 – VCC V Active MODE Hold voltage Suspend hold voltage/ L VSL 0 – 0.5 V Suspend MODE Hold voltage BIAS set voltage *1: 0.4~30kHz *2: DIN AUDIO Application Circuit 1 A/S 8 SUSPEND SPEAKER 2 7 BIAS 0.1µ SP_OUT 4/8/12 3 6 4 5 1µ 0.1µ R1 SP_IN(L+R) BH7823AFVM R2 C 1.0µ