CDB5345(2004) 데이터 시트보기 (PDF) - Cirrus Logic

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CDB5345
(Rev.:2004)

105 dB, 24-Bit, 192 kHz Stereo Audio ADC

Cirrus Logic 

CS5345

ADC ANALOG CHARACTERISTICS (cont)

Microphone Level Inputs

Parameter

Symbol

Min

Typ

Max

Unit

Dynamic Performance for VA = 5 V

Dynamic Range

PGA Setting: -12 dB to 0 dB

A-weighted

unweighted

77

83

74

80

-

dB

-

dB

PGA Setting: +12 dB

A-weighted

65

71

unweighted

62

68

Total Harmonic Distortion + Noise (Note 3)

THD+N

-

dB

-

dB

PGA Setting: -12 dB to 0 dB

-1 dB

-20 dB

-60 dB

-

-80

-74

dB

-

-60

-

dB

-

-20

-

dB

PGA Setting: +12 dB

-1 dB

Dynamic Performance for VA = 3.3 V

Dynamic Range

PGA Setting: -12 dB to 0 dB

A-weighted

unweighted

-

-68

77

83

74

80

PGA Setting: +12 dB

A-weighted

65

71

unweighted

62

68

Total Harmonic Distortion + Noise (Note 3)

THD+N

-

dB

-

dB

-

dB

-

dB

-

dB

PGA Setting: -12 dB to 0 dB

-1 dB

-20 dB

-60 dB

-

-80

-74

dB

-

-60

-

dB

-

-20

-

dB

PGA Setting: +12 dB

-1 dB

Interchannel Isolation

Microphone Level Input Characteristics

Full-scale Input Voltage

Input Impedance

-

-68

-

dB

-

30

-

dB

0.013*VA 0.014*VA 0.015*VA Vpp

-

100

-

kΩ

3. Referred to the typical line level full-scale input voltage

4. Valid for Double and Quad Speed Modes only.

8

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