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Products : Discontinued
 
wolfsonmicro electronics
 
 
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WM8816  
 
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Ultra-low distortion volume controller
WM8816_BlockDiagram.gif

THIS PRODUCT HAS BEEN DISCONTINUED

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
 
 
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DATA SHEET
WM8816 Rev 1.5 (165 k )

EVALUATION BOARDS
WM8716EV1M
WM8816VOL_EV1
WM8816MICRO_EV1

 
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