CDB53L21 データシートの表示（PDF） - Cirrus Logic

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CDB53L21

Low Power, Stereo Analog to Digital Converter

Cirrus Logic 

CS53L21

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 43, “MIC Control (Address 05h)” on page 44.

MICBIAS

20

//

+ MICIN1

17

Σ

//

+ MICIN2

18

Figure 8. 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 9. Differential Input

24

DS700PP1

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