CS8420-CSZ datasheet(7/94 Pages) CIRRUS

7 / 94 page

DS245F4

CS8420

PERFORMANCE SPECIFICATIONS

DIGITAL FILTER CHARACTERISTICS

See “AES3 Transmitter and Receiver” on page 28.

DC ELECTRICAL SPECIFICATIONS

AGND = DGND = 0 V; all voltages with respect to 0 V.

Power Down Mode is defined as RST = LO with all clocks and data lines held static.

Normal operation is defined as RST = HI.

Parameter*

Symbol

Min

Typ

Max

Units

Dynamic Range

120

128

Input Sample Rate

(serial input port)

Fsi

108

kHz

Output Sample Rate

Fso

108

kHz

Output to Input Sample Rate Ratio

0.33

Total Harmonic Distortion + Noise

1 kHz, -1 dBFS, 0.33 < Fso/Fsi < 1.7

1 kHz, -1 dBFS, 0.33 < Fso/Fsi < 3

10 kHz, -1 dBFS, 0.33 < Fso/Fsi < 1.7

10 kHz, -1 dBFS, 0.33 < Fso/Fsi < 3

THD+N

-117

-112

-110

-107

Peak idle channel noise component

-140

dBFS

Resolution

bits

Gain Error

-0.12

Parameter*

Symbol

Min

Typ

Max

Units

Passband

Upsampling

Downsampling

0.4535*Fsi

0.4535*Fso

Passband Ripple

±0.007

Stopband (Downsampling)

0.5465*Fso

Fsi/2

Stopband Attenuation

110

Group Delay

(Note 2)

tgd

1.75

Group Delay Variation vs. Frequency

Δtgd

0.0

μs

Interchannel Phase Deviation

0.0

Parameters

Symbol

Min

Typ

Max

Units

Power Down Mode (Note 3)

Supply Current in power down

VA+

VD+

μA

Normal Operation (Note 4)

Supply Current at 48 kHz Fso and Fsi

VA+

VD+

3.7

Supply Current at 96 kHz Fso and Fsi

VA+

VD+

7.0

125

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