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| 01W092A Audio driver for cellular phones BH7823AFVM Description 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 0A (Typ.) when it is not in use. Dimension (Units : mm) 2.9 0.1 4.0 0.2 8 5 2.8 0.1 1 4 0.475 0.9Max. 0.75 0.05 0.08 0.05 0.22 +0.05 -0.04 0.65 0.08 S 0.29 0.15 0.6 0.2 0.145 +0.05 -0.03 0.08 M June, 2001 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 MSOP8 Applications Audio driver for cellular phones Absolute Maximum Ratings (Ta=25C) Parameter Apllied voltage Power dissipation Operating temperature range Storage temperature range *Derating : 3.5mW/C for operation above Ta=25C *PCB (70mmx70mm, t=1.6mm) glass epoxy mounting. Symbol VccMAX Pd Topr Tstg -20 -55 Limits 6.0 370 Unit V * +70 +125 mW ~ ~ C C Recommended Operating Conditions (Ta=25C) Parameter Operating voltage range Symbol VCCS Min. 2.8 Typ. - Max. 5.5 Unit V *This product is not designed for protection against radioactive rays. Electrical characteristics (Unless otherwise noted; Ta=25C, Vcc=3.6V, f=1kHz, RL=8 ) Parameter Circuit current 1 Circuit current 2 Voltage gain 1 Voltage gain 2 Maximum output voltage Output distortion rate Output residual noise Suspend attenuation BIAS set voltage Suspend hold voltage/ H Suspend hold voltage/ L Symbol ICC1 ICC2 GV1 GV2 VOM DSTN VNO GS VBIAS VSH VSL Min. - - 9.5 -2.0 4.8 - - - 1.6 VCC/3+0.8 0 Typ. 3 0 11.5 0 6.8 0.2 -94 -107 1.8 - - Max. 7 2 13.5 2.0 - 1.0 -80 -80 2.0 VCC 0.5 Unit mA A dB dB dBV % dBV dBV V V V Conditions No signal Active MODE No signal Suspend MODE VIN=-20dBV 1st OPAMP gain VIN=-20dBV 2nd OPAMP gain DSTN=10% BTL *1 VIN=-20dBV SE *1 No signal, SE Active MODE *2 VIN=-20dBV BTL *2 2PIN DC voltage Active MODE Hold voltage Suspend MODE Hold voltage *1: 0.4~30kHz *2: DIN AUDIO Application Circuit 1 A/S SUSPEND 8 SPEAKER 2 0.1 BIAS 7 SP_OUT 4/8/12 3 1 0.1 R1 6 4 SP_IN(L+R) BH7823AFVM 5 1.0 R2 C |
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