This Ground Isolation Amplifier is developed for car and automotive applications. The board efficiently eliminates problems caused by wiring resistance and removes noise generated by other electrical devices used in automobile environment. In a car or automotive the audio system is grounded to the car body. For this reason, electrical noise generated by the car electrical system can enter the power amplifier input through the chassis and become audible. The BA3123F utilizes the common-mode rejection characteristics of an OPAMP to eliminate this noise. 4 x RCA connectors are provided for easy audio interface. 2x pin header connector is provided for chassis ground.
Application Diagram
Features
- Power Supply 4V to 18V DC
- Quiescent Current 9mA
- High Common-mode Rejection Ratio(1Khz) 57dB
- Low Noise
- Low Distortion THD 0.002% (Vout 0.7V)
- Frequency Response 20Hz to 20Khz
- PCB Dimensions 58.58 x 41.28mm
- 4 x 2.5mm Mounting Holes
Connections and Other Details
- CN1: Pin 1,2 = VCC 4V to 18V, Pin 3,4=GND
- CN2: Connect it to Car Chassis
- CN3: Connect it to Car Chassis
- J1: RCA Female Audio Output (Right Channel)
- J2: RCA Female Audio Output (Left Channel)
- J3: RCA Female Audio Input (Left Channel)
- J4: RCA Female Audio Input (Right Channel)
- D1: Power LED
Schematic
Application Diagram
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