CS47048 Data Sheet

Audio SOC Processor Family

28

Copyright 2008 Cirrus Logic

DS787A7

5.17.2 Analog Output Characteristics (Automotive)

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.)

Notes:

1. Guaranteed by design. The DC current draw represents the allowed current draw from the AOUT pin due to typical

leakage through the electrolytic DC-blocking capacitors.

loading that appears before the 560

Ω series resistor (typically parasitic), and will effectively move the dominant pole

of the two-pole amp in the output stage. Increasing this value beyond the recommended 100 pF can cause the

internal op-amp to become unstable.

Parameter

Differential

Min

Typ

Max

Single-Ended

Min

Typ

Max

Unit

Fs = 96 kHz

Dynamic Range

A-weighted

unweighted

100

97

108

105

-

-

97

94

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

AOUT_x+

3.3 µF

AOUT

2200pF

560

10k