AA8642 Agamem Microelectronics Inc. PRELIMINARY Dual Video Amplifier with LPF DESCRIPTION AA8642 is a dual low pass filter video amplifier with 6db gain, 75 output buffer and SAG correction. The 75 buffer is capable of driving two circuits. The SAG could reduce the output coupling capacitor. It supports 3V and 5V operation voltage and incorporates high performance 4-stage LPF which is ideal for removing DAC sampling noise. The power saving circuit provides the power saving function. The IC is available in 8-pin TSSOP (AA8642AP), 8-pin SOP (AA8642SP) and 8-pin DIP (AA8642PP) package. FEATURES 1. Composite video driver with 6dB gain 2. Support 3V and 5V operation voltage 3. Built-in high performance 4-stage LPF 4. Dual channels video amplifier 5. SAG correction function 6. A load sufficient for driving two circuits 7. Low operating current, 18mA typical 8. Internal voltage clamp circuit 9. AC-Couple or DC-Couple output APPLICATION ¾ VCR ¾ Video Camera ¾ TV ¾ Video Player AA8642 BLOCK DIAGRAM Vcc Vin2 8 LPF 7 6dB 75 Amp 6.75MHZ Driver 5 Vout2 6 Vsag2 4 Vout1 3 Vsag1 750 2.2K 2.0K Vin1 1 LPF 6dB 75 Amp Driver 6.75MHZ 750 2.0K 2.2K 2 1 2007/10/15 AGAMEM MICROELECTRONICS INCOPERATION RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. AGAMEM DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.