CS5371A_09 Datasheet, PDF (7/32 Pages) Cirrus Logic – Low-power, High-performance ΔΣ Modulators

CS5371A CS5372A
PERFORMANCE CHARACTERISTICS
Parameter
Signal Characteristics
Input Signal Frequencies
(Note 9, 10)
Full-scale Differential AC Input
Full-scale Differential DC Input
(Note 9)
(Note 9)
Input Common Mode Voltage
(Note 11)
Input Voltage Range (V_cm ± 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)
Total Harmonic Distortion
Linearity
(Note 15)
(Note 15)
Common Mode Rejection Ratio
Channel Crosstalk (CS5372A only)
Symbol
V_BW
V_AC
V_DC
V_CM
V_RNG
SNR
SDN
THD
LIN
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
-
-
0.000316
-
-
110
-
-
-150
-
Unit
Hz
V_pp
V
V
V
dB
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 and Vcm = (VA-) + 2.50V.
15. Characterized with a 31.25 Hz sine wave at -1 dB amplitude and Vcm = (VA-) + 2.35V. This
corresponds to the output Vcm of the CS4373A test DAC.
DS748F2
7