CS43L21 Просмотр технического описания (PDF) - Cirrus Logic

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производитель

CS43L21

Low Power, Stereo Digital to Analog Converter

Cirrus Logic 

CS43L21

+1.8V or +2.5V

1 µF

0.1 µF

0.1 µF

0.1 µF 1 µF

VD

1 µF **

1 µF **

FLYP

FLYN

VSS_HP

GND_HP

VA VA_HP

AOUTB

AOUTA

* *Use low ESR ceramic capacitors.

CS43L21

0.022 µF

51.1 Ω

See Note 1 +1.8V or +2.5V

Note 1:

Series resistance in the path of the power supplies (typically

used for added filtering) must be avoided. Any voltage drop

on VA_HP will directly impact the negative charge pump

supply (VSS_HP) and result in clipping on the audio output .

Headphone Out

Left & Right

470Ω

C

Rext

Line Level Out

Left & Right

C

See Note 2

Rext

470Ω

Digital Audio

Processor

MCLK

SCLK

LRCK

SDIN

VL or DGND

47 kΩ See Note 3

TSTO/M/S

RESET

I²S/LJ

MCLKDIV2

DEM

FILT+

AGND

Speaker Driver

1 µF

+1.8V, 2.5 V

or +3.3V

VL

0.1 µF

kΩ

Note 3:

Pull-up to VL (47 kΩ for Master Mode. Pull-

down to DGND for Slave Mode.

DGND

1 µF

VQ

Note 2 :

This circuitry is intended for applications where the CS 43L21 connects directly to an unbalanced output of the device . For

internal routing applications please see the DAC Analog Output Characteristics section for loading limitations .

( ) For best response to Fs/2 : C =

Rext + 470

4πFs Rext × 470

Figure 2. Typical Connection Diagram (Hardware Mode)

10

DS723A1

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