STA321 datasheet(16/157 Pages) STMICROELECTRONICS

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Electrical specifications

STA321

16/157

Doc ID 15351 Rev 3

ADC

IDDA

Supply current in operating mode

VAVDD = 3.3V

ISTDBYA

AVDD supply current in standby

VAVDD = 3.3V

µA

Dynamic range

1 kHz, A-weigthed

VAVDD = 3.3 V

-90

SNRADC

Signal to noise ratio

1 kHz, A-weighted

VAVDD = 3.3 V

-92

THDADC

Total harmonic distortion

1 kHz, -1dB

VAVDD = 3.3 V

-85

Channel cross talk

VAVDD = 3.3 V

Group delay

Fs mode (fS = 32 kHz)

0.4

Fs_by_2 mode (fS = 16 kHz) -

0.7

Fs_by_4 mode (fS = 8 kHz)

1.4

Pass band

0.4535 -

Pass band ripple

Fs mode (fS = 44.1 kHz)

0.08

Fs_by_2 mode

(fS = 22.05 kHz)

-0.08

Fs_by_4 mode

(fS = 11.025 kHz)

-0.08

Stop band attenuation

Fs mode (fS = 44.1 kHz)

Fs_by_2 mode

(fS = 22.05 kHz)

-45

Fs_by_4 mode

(fS = 11.025 kHz)

-45

Frequency response

-3 dB

-0.08 dB

Linear phase deviation

at 20 Hz

19.35

deg

Pass-band ripple

0.08

Headphone detector threshold limits

E_HP1

HP low threshold

2.34

HP high threshold

2.52

E_HP2

HP low threshold

0.7

HP high threshold

0.9

Table 6.

Electrical specifications (continued)

Symbol

Parameter

Test conditions

Min

Typ

Max

Unit

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