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Further information
WM8816 : Ultra-low distortion volume controller
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FEATURES
- Gain range from -111.5dB to +15.5dB
- 0.5dB Gain step size
- Total Harmonic Distortion 0.001% (100dB) typical
- Crosstalk -110dB typical
- Input signals up to ±18V
- Zero Detection for Gain Changes
- Hardware and Software Mute
- Power On/Off Transient Suppression
DESCRIPTION
The WM8816 is a highly linear stereo volume control for audio systems offering unsurpassed distortion and noise performance, with Total Harmonic Distortion plus Noise (THD+N) at 0.001% (100dB). The design is based on resistor chains with external op-amps, which provides flexibility for the supply voltage, signal swing, noise floor and cost optmisation. The gain of each channel can be independently programmed from -111.5dB to +15.5dB through a digital serial control interface.
Audible clicks on gain changes are eliminated by changing gains only when a zero crossing has been detected in the signal. The device also features peak level detection, which can be used for Automatic Gain Control. The WM8816 operates from a single +5V supply and accepts signal input levels up to
PRICE AND AVAILABILITY
Datasheets
- WM8816, Rev 1.5 (161k)
EVALUATION BOARDS
