Cirrus Logic CS5373A - Manual (Page 8)

CS5373A
8 DS703F2
MODULATOR CHARACTERISTICS
Notes: 13. The upper bandwidth limit is determined by the CS5378 digital filter cut-off frequency.
14. No signals operating from external power supplies should be applied to pins of the device prior to its
own supplies being established. Connecting any terminal to voltages greater than VA+ or less than VA-
may cause destructive latch-up.
15. Common mode voltage is defined as the mid-point of the differential signal.
16. Dynamic Range defined as 20 log [ (RMS full scale) / (RMS idle noise) ] where idle noise is measured
from a CS3301A/02A amplifier terminated input at 1x gain.
17. Signal Dependent Noise defined as 20 log [ (RMS full scale) / (RMS signal noise) ] where signal noise
is measured by subtracting the signal power at the fundamental and harmonic frequencies.
18. Tested with a 31.25 Hz sine wave at -1 dB amplitude.
19. Specification is for the parameter over the specified temperature range and is for the device only. It does
not include the effects of external components.
20. This specification applies to the effective offset voltage calculated from the output codes of the CS5378
digital filter following offset calibration and correction.
21. Offset calibration is performed in the CS5378 digital filter and includes the full-scale signal range.
Parameter Symbol Min Typ Max Unit
Input Characteristics
Input Signal Frequencies ( Note 10, 13) V
BW
DC - 1720 Hz
Full Scale Differential AC Input ( Note 10 ) V
AC
- - 5 V
pp
Full Scale Differential DC Input ( Note 10 ) V
DC
-2.5 - 2.5 V
dc
Input Voltage Range (Signal + V
cm
) ( Note 10, 14) V
RNG
(VA-)+0.7 - (VA+)-1.25 V
Input Common Mode Voltage ( Note 15) V
CM
- (VA-)+2.5 - V
Dynamic Performance
Dynamic Range DC to 1720 Hz
( Note 16 ) DC to 860 Hz
DC to 430 Hz
DC to 215 Hz
DC to 108 Hz
DC to
54 Hz
DC to 27 Hz
SNR -
-
121
-
-
-
-
109
121
124
127
130
133
136 -
-
-
-
-
-
- dB
dB
dB
dB
dB
dB
dB
Signal Dependent Noise DC to 430 Hz
( Note 17, 18 )
SDN 100 110 - dB
Total Harmonic Distortion ( Note 18 ) THD - -118 -112 dB
Linearity ( Note 18 ) LIN - 0.000126 0.000251 %
Common Mode Rejection Ratio CMRR - 90 - dB
Gain Accuracy
Channel to Channel Gain Accuracy ( Note 3 ) CGA - ± 1 ± 2 %
Channel Gain Drift ( Note 19 ) CGA
TC
- 5 - ppm/°C
Offset
Offset Voltage, Differential OFST - 100 - mV
Offset Voltage Drift ( Note 19 ) OFST
TC
- 0.1 -
μV/°C
Offset after Calibration ( Note 20 ) OFST
CAL
- ± 1 - μV
Offset Calibration Range ( Note 21 ) OFST
RNG
- 100 - %FS