CS47048 Data Sheet

Audio SOC Processor Family

DS787A7

Copyright 2008 Cirrus Logic

27

5.16.3 ADC Digital Filter Characteristics

Notes:

1. Filter response is guaranteed by design.

2. Response is clock-dependent and will scale with Fs.

5.17 DAC Characteristics

5.17.1 Analog Output Characteristics (Commercial)

sine wave driven through a filter shown in Figure 13 on page 28 or Figure 14 on page 29; DSP running test applica-

tion; Measurement Bandwidth is 20 Hz to 20 kHz.)

Parameter1, 2

Min

Typ

Max

Unit

Fs = 96 kHz, 192 kHz

Passband (Frequency Response)

to -0.1 dB corner

0

-

0.4896

Fs

Passband Ripple

-

-

0.08

dB

Stopband

0.5688

-

-

Fs

Stopband Attenuation

70

-

-

dB

Total Group Delay

-

12/Fs

-

s

High-Pass Filter Characteristics

Frequency Response

-3.0 dB

-0.13 dB

-1

20

-

-

Hz

Hz

Phase Deviation

@ 20 Hz

-

10

-

Deg

Passband Ripple

-

-

0

dB

Filter Settling Time

-

0

s

Parameter

Differential

Min

Typ

Max

Single-Ended

Min

Typ

Max

Unit

Fs = 96 kHz

Dynamic Range

A-weighted

unweighted

102

99

108

105

-

-

99

96

105

102

-

-

dB

dB

Total Harmonic Distortion + Noise

0 dB

-20 dB

-60 dB

-

-

-

-98

-88

-48

-90

-

-

-

-

-

-95

-85

-45

-87

-

-

dB

dB

dB

Interchannel Isolation

(1 kHz)

-

95

-

-

95

-

dB

Analog Output

Full-Scale Output

TBD

1.35•VA

TBD

TBD

0.68•VA

TBD

Interchannel Gain Mismatch

-

0.1

-

-

0.1

-

dB

Gain Drift

-

±120

-

-

±120

-

ppm/°C

Output Impedance

-

100

-

-

100

-

Ω

DC Current draw from an AOUT pin1

-

-

10

-

-

10

2

3-

-

3

-

-

k

Ω

2

-

-

100

-

-

100

pF