BA7655A

Multimedia ICs Dual Voltage-controlled Amplifier BA7655A / BA7655AF The BA7655A and BA7655AF are dual voltage-controlled amplifier ICs designed for use in camcorders and VCRs. By varying the control voltage the amplifier gain can varied from -6dB to +6dB. When the control pin voltage drops below 1V the amplifier enters Power Save Mode which mutes the output and reduces the current drawn by the IC. Applications Video cassette recorders and camcorders Features 1) Wide bandwidth. 2) Wide dynamic range. 3) Low power cousumption. 4) Output muting possible. 5) Low voltage gain temperature drift. Block diagram VCC 8 IN2 7 CTL2 6 OUT2 5 VCA2 VCA1 1 IN1 2 CTL1 3 OUT1 4 GND 1 Multimedia ICs BA7655A / BA7655AF Pin descriptions Pin No. 1 2 3 4 5 6 7 8 Pin name IN1 CTL1 OUT1 GND OUT2 CTL2 IN2 VCC Input 1 Control 1 Output 1 GND Output 2 Control 2 Input 2 Power supply Function Input circuits 40k (Typ.) VCC VCC VCC 40k (Typ.) 3, 5 2.5V (Typ.) 1, 7 2, 6 3.0V (Typ.) 1m (Typ.) Absolute maximum ratings Parameter Power supply voltage Power dissipation Operating temperature Storage temperature Symbol VCCMax. Pd Topr Tstg Limits 8.0 500 (BA7655A : DIP8)∗1 350 (BA7655AF : SOP8)∗2 – 20 ~ + 80 – 55 ~ + 125 Unit V mW °C °C ∗1 Reduced by 5.0mW for each increase in Ta of 1°C over 25°C. ∗2 Reduce by 3.5mW for each increase in Ta of 1°C over 25°C, when mounted on a 50mm × 50mm. Recommended operating conditions (Ta = 25°C) Parameter Power supply voltage Symbol VCC Limits 4....