AK4252

ASAHI KASEI [AK4250/52] = Preliminary = AK4250/52 Output Coupling Capacitor-less Video Amp with LPF GENERAL DESCRIPTION The AK4250/52 are a Video Amp with LPF. The output coupling capacitor can be removed because the AK4250/52 include the negative power supply circuit. The AK4250/52 are housed in a space-saving 8-pin USON package. FEATURE 1. Video Function A Composite Video Input A Video-Amp for Composite Video Signal AK4250: +6dB www.DataSheet4U.com Ak4252: +12dB Low Pass Filter Charge pump circuit for negative power supply 2. Ta = -40 ∼ 85 °C 3. Power Supply: 2.7 ∼ 3.6V (typ. 3.0V) 4. Power Supply Current: 10 mA 5. Package: 8 pin USON „ Block Diagram PDN VIN Clamp LPF VOUT VDD Charge Pump Clock Generator CP CN VSS VEE Figure 1. AK4250/52 Block Diagram Rev.0.4 -12006/11 ASAHI KASEI [AK4250/52] „ Ordering Guide AK4250VU AK4252VU AKD4250/52 −40 ∼ +85°C 8 pin USON (0.5mm pitch) −40 ∼ +85°C 8 pin USON (0.5mm pitch) Evaluation board for AK4250/52 „ Pin Layout CP 1 8 CN www.DataSheet4U.com VDD VIN 2 7 VEE 3 Top View 6 VSS PDN 4 5 VOUT Rev.0.4 -2- 2006/11 ASAHI KASEI [AK4250/52] PIN/FUNCTION No. 1 2 3 4 5 6 7 8 Pin Name CP VDD VIN PDN VOUT VSS VEE CN I/O O I I O O I Function Positive Charge Pump Capacitor Terminal Pin Power Supply Pin. Composite Video Signal Input Pin Power-Down Mode Pin. Internal Pull Down 100kΩ. “H”: Power up, “L”: Power down. Composite Video Signal Driver Pin Ground Pin Negative Voltage Output Pin for Video Amplifier...