7:3 Audio Switch & 6:3 Video Switch

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The AK4220 is an AV Switch with 7:3 Audio Switches and 6:3 Video Switches. Using CMOS process to offer the high performance with low power consumption. In the Audio section, on-chip differential input circuit could separate the external ground noise. The AK4220 integrates a pop noise free circuit for power on/pff. The AK4220 is offered in a space saving 64-pin LQFP package, ideal for car navigation applications.

Key Features

1. Audio Section

• Selector for 7 inputs and 3 outputs

• Differential Input Circuit for Ground Noise Cannel

• THD+N: -92dB (@1Vrms)

• Dynamic Range: 96dB

• Channel-Independent Output Off

• Pop Noise Free Circuit for Power On/Off

• Channel-Independent Input Detection Circuit

2. Video Section

• Selector for 6 inputs and 3 outputs

• Six Composite Signal Inputs

• Video Driver for Composite Signal Output (+6dB)

• Channel-Independent Hi-Z Output

• On-Chip Sync-tip Clamp Circuit

• Frequency Range: 6MHz

• S/N: 74dB

• Input Detection Circuit

3. Control Section

• Serial µP I/F (I2C, 4-wires serial)

• Five Programmable Output pins

4. Power Supply

• Analog: 4.5V ~ 5.5V

• Digital: 3.0V ~ 3.6V

• Low Power Consumption: 186mW

5. Ta = -40 to 85 °C

6. Package: 64pin LQFP

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Block Diagram

Block Diagram

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