CS5371A(2006) Просмотр технического описания (PDF) - Cirrus Logic

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CS5371A
(Rev.:2006)

Low-power, High-performance ∆Σ Modulators

Cirrus Logic 

CS5371A CS5372A

PERFORMANCE CHARACTERISTICS

Parameter

Signal Characteristics

Input Signal Frequencies

(Note 9, 10)

Full-scale Differential AC Input

(Note 9)

Full-scale Differential DC Input

(Note 9)

Input Common Mode Voltage

(Note 11)

Input Voltage Range (Vcm ± Signal )

(Note 9)

Dynamic Performance

Dynamic Range

(Note 10, 12)

(1/4 ms) DC to 1720 Hz

(1/2 ms) DC to 860 Hz

(1 ms) DC to 430 Hz

(2 ms) DC to 215 Hz

(4 ms) DC to 108 Hz

(8 ms) DC to 54 Hz

(16 ms) DC to 27 Hz

Signal-dependent Noise

(Note 13, 14)

(1 ms) DC to 430 Hz

Total Harmonic Distortion

(Note 14)

Linearity

(Note 14)

Common Mode Rejection Ratio

Channel Crosstalk (CS5372A only)

Symbol

VBW

VAC

VDC

VCM

VRNG

SNR

SDN

THD

LIN

CMRR

CXT

Min

Typ

Max

DC

-

-2.5

-

(VA-)+0.7

-

2000

-

5

-

2.5

(VA-)+2.5

-

-

(VA+)-1.25

-

109

-

-

121

-

121

124

-

-

127

-

-

130

-

-

133

-

-

136

-

100

110

-

-

-118 -112

-

0.000126 0.000251

-

110

-

-

-150

-

Unit

Hz

Vpp

V

V

V

dB

dB

dB

dB

dB

dB

dB

dB

dB

%

dB

dB

Notes: 9. Guaranteed by design and/or characterization.

10. The upper bandwidth limit is determined by the digital filter cut-off frequency.

11. Common mode voltage is defined as the mid-point of the differential signal.

12. Dynamic Range defined as 20 log [ (RMS full scale) / (RMS idle noise) ] where idle noise is measured

from a CS3301A / CS3302A amplifier terminated input at 1x gain.

13. Signal-dependent Noise defined as 20 log [ (RMS full scale) / (RMS signal noise) ] where signal noise

is measured by subtracting out the signal power at the fundamental and harmonic frequencies.

14. Tested with a 31.25 Hz sine wave at -1 dB amplitude.

DS748F1

7

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