AA8642

www.DataSheet4U.com Agamem Microelectronics Inc. PRELIMINARY DESCRIPTION AA8642 Dual Video Amplifier with LPF AA8642 is a dual low pass filter video amplifier with 6db gain, 75Ω output buffer and SAG correction. The 75Ω 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. 2. 3. 4. 5. 6. 7. 8. 9. Composite video driver with 6dB gain Support 3V and 5V operation voltage Built-in high performance 4-stage LPF Dual channels video amplifier SAG correction function A load sufficient for driving two circuits Low operating current, 18mA typical Internal voltage clamp circuit AC-Couple or DC-Couple output APPLICATION VCR Video Camera TV Video Player AA8642 BLOCK DIAGRAM Vcc Vin2 8 LPF 6.75MHZ 6dB Amp 2.0K 2.2K Ω Driver 75 7 5 750 Vout2 Vsag2 Ω 6 Vin1 1 LPF 6.75MHZ 6dB Amp 2.0K 2.2K 75 Driver Ω 4 750 Vout1 Vsag1 Ω 3 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 ...