WM5102 datasheet(44/334 Pages) WOLFSON

44 / 334 page

WM5102

Production Data

PD, June 2014, Rev 4.2

INPUT SIGNAL PATH

The WM5102 has six highly flexible input channels, configurable in a large number of combinations.

Each of the six input channels supports analogue (mic or line) and digital input configurations.

The analogue input paths support single-ended and differential modes, programmable gain control

and are digitised using a high performance 24-bit sigma-delta ADC.

The digital input paths interface directly with external digital microphones; a separate microphone

interface clock is provided for 3 separate stereo pairs of digital microphones. Digital delay can be

applied to any of the digital input paths; this can be used for phase adjustment of any digital input,

including directional control of multiple microphones.

Three microphone bias (MICBIAS) generators are available, which provide a low noise reference for

biasing electret condenser microphones (ECMs) or for use as a low noise supply for MEMS

microphones and digital microphones.

Digital volume control is available on all inputs (analogue and digital), with programmable ramp control

for smooth, glitch-free operation.

The IN1L and IN1R input signal paths and control registers are illustrated in Figure 13. The IN2 and

IN3 signal paths are equivalent to the IN1 signal path.

Figure 13 Input Signal Paths

WM5102 Datasheet(PDF) 44 Page - Wolfson Microelectronics plc