WONDOM AA-AB41147 -Digital stereo volume controller with chips NJM1109

Complete your audio amp project with the Wondom AA-AB41147 digital controlled stereo electronic volume control. Add it to any amp board that has line input capability to control the volume with a stepped rotatory knob. Analog and digital sections receive power independently to minimize the chance for interference.

The VC04-NJM1109 is strong enough to drive earphones, but safe for amplifiers. The maximum output power is 2 x 440mW which is great for headphones. The board has a limited gain of 10 dB to avoid damaging the main amp board. It's around 3V/V voltage gain which amounts to 2V RMS for mobile devices.

Specifications: • Voltage required: 10-15 VDC @ 500 mA • Power jack size: 5.5 x 2.1 mm tip positive • Quiescent current: 10 mA • SNR: 92.2 dB • Accuracy: 1 dB/step • Control range: -107.5 to 10 dB • Volume control board dimensions: 3.6" x 2.7" • Decode board: 2" L x 1.5" W x 1.7" H including knob without 4 pin plug.