CS42L51 View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CS42L51

Low Power, Stereo CODEC with Headphone Amp

Cirrus Logic 

CS42L51

fc = 2----π----(--5----0-----k----1Ω-----)--(--1------µ----F----)- = 3.18 Hz

The MICBIAS series resistor must be selected based on the requirements of the particular microphone

used. The MICBIAS output pin is selected using the MICBIAS_SEL bit.

Software

Controls:

“Interface Control (Address 04h)” on page 52, “MIC Control (Address 05h)” on page 53.

MICBIAS

20

//

+ MICIN1

17

Σ

//

+ MICIN2

18

Figure 9. MIC Input Mix w/Common Mode Rejection

2.5 V

2.15 V

1.25 V

0.35 V

2.15 V

1.25 V

0.35 V

VA

AINxA

AINxB

Full-Scale Differential Input Level (MICMIX=1)

= (AINxA - AINxB) = 3.6 VPP = 1.27 VRMS

Figure 10. Differential Input

30

DS679F1

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