CDB4327 Ver la hoja de datos (PDF) - Cirrus Logic

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CDB4327

Low Cost, 20-Bit, Stereo, Audio D/A Converter

Cirrus Logic 

CS4327

ANALOG CHARACTERISTICS (TA = 25 °C; Internal SCLK; Full-Scale Output Sine wave, 997 Hz;

12.288 MHz MCLK; Fs = 48 kHz; Input Data = 20 Bits; SCLK = 3.072 MHz; RL = 10 kΩ; VD+ = VA+ = 5 V;

Logic 1 = VD+, Logic 0 = DGND; Measurement Bandwidth is 10 Hz to 20 kHz, unweighted, unless otherwise spec-

ified.)

Parameter

Symbol

Specified Temperature Operating Range

TA

Dynamic Performance

Dynamic Range

20-Bit

18-Bit

16-Bit

(Note 1)

(A-Weighted)

(A-Weighted)

(A-Weighted)

Total Harmonic Distortion + Noise

20-Bit

18-Bit

16-Bit

(Note 1)

0 dB

-20 dB

-60 dB

0 dB

-20 dB

-60 dB

0 dB

-20 dB

-60 dB

THD+N

Idle Channel Noise / Signal-to-Noise-Ratio

(Note 2)

Interchannel Isolation

(1 kHz)

Combined Digital and Analog Filter Characteristics

Frequency Response 10 Hz to 20 kHz

Fs = 48 kHz

Deviation from linear phase

Passband: to -0.1 dB corner

Passband Ripple

StopBand

StopBand Attenuation

Group Delay

(Note 3)

De-emphasis Error

Min

-10

93

96

-

-

-

-

-87

-

-33

-

-

-

-

-

-

-

-

-

-

0

-

0.5465

72

-

-

Typ

-

97

100

97

100

93

95

-93

-77

-37

-93

-77

-37

-93

-77

-37

108

-105

±0.1

±0.5

-

-

-

-

25/Fs

-

Max

70

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.4535

±0.002

-

-

-

±0.2

Unit

°C

dB

dB

dB

dB

dB

dB

dB

dB

dB

dB

dB

dB

dB

dB

dB

dBFS

dB

dB

deg

Fs

dB

Fs

dB

s

dB

Notes: 1. Triangular PDF Dithered Data

2. Auto-mute enabled. See parameter definitions.

3. Group Delay for Fs = 48 kHz

25/48 kHz = 520 µs

2

DS190F1

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