CS4297 datasheet(6/46 Pages) CIRRUS

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DS242F5

CS4297

CrystalClear™ SoundFusion™ Audio Codec ’97

POWER DOWN STATES

DIGITAL FILTER CHARACTERISTICS

Notes: 5. Stop Band rejection determines filter requirements. Out-of-band rejection determines audible noise.

6. The integrated Out-of-Band generated by the DAC process, during normal PCM audio playback, over

a bandwidth 28.8 kHz to 100 kHz, with respect to a 1 VRMS DAC output.

Parameter

Min

Typ

Max

Unit

Full Power

3.3 V digital

5 V digital

5 V analog

12.7

21.4

35.0

ADCs and Input Mux Powerdown (PR0)

3.3 V digital

5 V digital

5 V analog

5.32

9.80

23.1

DACs Powerdown (PR1)

3.3 V digital

5 V digital

5 V analog

9.25

16.0

30.0

Analog Mixer Powerdown, Vref on (PR2)

3.3 V digital

5 V digital

5 V analog

9.20

16.0

10.7

Analog Mixer Powerdown, Vref off (PR3)

3.3 V digital

5 V digital

5 V analog

5.30

9.80

~0.00

AC-Link Powerdown (PR4)

3.3 V digital

5 V digital

5 V analog

3.30

6.92

23.0

Internal Clock Disable (PR5)

3.3 V digital

5 V digital

5 V analog

0.004

0.005

0.001

Alternate Line Output Buffer Powerdown (PR6)

3.3 V digital

5 V digital

5 V analog

5.30

9.80

20.3

Parameter

CS4297-KQ

CS4297-JQ

Unit

Min

Typ

Max

Min

Typ

Max

Transition Band

0.4 × Fs

0.6 × Fs 0.4 × Fs

0.6 × Fs

Stop Band

0.6 × Fs

Stop Band Rejection

(Note 4, 5)

Out-of-Band Energy

(Note 6)

-82

-40

Group Delay

(Note 4)

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