STA529Q datasheet(27/57 Pages) STMICROELECTRONICS

Part #	STA529Q

Description	FFX™ audio codec with analog and digital inputs and 2 x 1.2 W (or 2 x 100 mW HP) class-D amplifier

PDF	57 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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27 / 57 page

STA529

ADC

Doc ID 13095 Rev 3

27/57

7.3

Applications scheme

Figure 7.

Diagram of input coupling and supply decoupling

7.4

Configuration examples

The ADC sampling frequency can be selected from three values:

●

normal (from 32 kHz to 48 kHz)

●

low (from 16 kHz to 24 kHz)

●

very-low (from 8 kHz to 12 kHz)

The setting is done through bits ADC_FS_RANGE of register MISC on page 50. For all

other settings register ADCCFG on page 49 is used.

AC coupled

DC coupled

AC coupled

3V, 3A supply

VSSA

INL

INR

AVDD

AGND

VHI

VLO

VCM

VBIAS

C1, C2, C3, C4 = 10 nF

(These capacitors must be

placed very close to their

respective IC pins)

C5, C6, C7 = 33 µF

(Low ESR and ESL

capacitors are

recommended)

VSSA plane must be

different from other

ground plane

3V, 3A must be a

low-noise supply and

separate from

other supplies

R1 = 500

C8 = 10 µF

C9, C0 = 1 µF

STA529Q Datasheet(PDF) 27 Page - STMicroelectronics

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