AK4223 Datasheet, PDF (1/27 Pages) Asahi Kasei Microsystems – 6:2 Audio Switch and 6:2 Video Switch

[AK4223]
AK4223
6:2 Audio Switch and 6:2 Video Switch
GENERAL DESCRIPTION
The AK4223 is an AV switch with 6:2 audio and 6:2 video switches. High performances with low power
consumption are achieved by CMOS process. Integrated differential input circuits in audio and video
blocks can separate the external ground noise. In audio block, a differential input circuit, audio LPF and
0dB/-6dB gain amplifier are integrated eliminating the needs for external LPF for audio outputs. In video
block, an input clamp circuit, 6dB amplifier and video driver are integrated, and they also eliminate the
need for external circuits. The AK4223 is offered in a space saving small 48-pin LQFP package, ideal for
car navigation applications.
FEATURES
1. Audio Section
• Selector with 6 inputs and 2 outputs
• Differential Input Circuit for Ground Noise Canceling
• LPF Circuit for Audio signals
• Output Gain Control: 0dB ∼ - 6dB, -1dB Step
• S/(N+D): 90dB (@0dBV)
• Dynamic Range: 94dB
• Channel-Independent Mute Function
2. Video Section
• Selector with 6 inputs and 2 outputs
• Six Composite Signal Inputs
• On-Chip Sync-tip Clamp Circuit
• Video Drivers for Composite Signal Output (+6dB/+3dB/0dB/-3dB)
• Output Gain Control: -1dB ∼ +1dB, 0.1dB Step
• LPF Circuit for Video signals (Bandwidth: 6MHz)
• S/N: 65dB
• Channel-Independent Mute Function
3. Control Section
• Serial µP I/F (I²C)
4. Power Supply: 7.5V ∼ 9.5V
5. Ta = -40 ∼ 85 °C
6. Package: 48pin LQFP
MS1251-E-00
1
2010/10