Datasheet

AD7195
Rev. 0 | Page 3 of 44
SPECIFICATIONS
AV
DD
= 4.75 V to 5.25 V, DV
DD
= 2.7 V to 5.25 V, AGND = DGND = 0 V; REFIN(+) = AV
DD
, REFIN(−) = AGND, MCLK = 4.92 MHz,
T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Table 1.
Parameter Min Typ Max Unit Test Conditions/Comments
1
ADC
Output Data Rate 4.7 4800 Hz Chop disabled
1.17 1200 Hz Chop enabled, sinc
4
filter
1.56 1600 Hz Chop enabled, sinc
3
filter
No Missing Codes
2
24 Bits FS > 1, sinc
4
filter
3
24 Bits FS > 4, sinc
3
filter
3
Resolution See the RMS Noise and Resolution section
RMS Noise and Output
Data Rates
See the RMS Noise and Resolution section
Integral Nonlinearity
Gain = 1
2
±1 ±5 ppm of FSR
Gain > 1 ±5 ±15 ppm of FSR
Offset Error
4, 5
±75/gain μV Chop disabled
±0.5 μV Chop enabled
Offset Error Drift vs.
Temperature
±100/gain nV/°C Gain = 1 to 16; chop disabled
±5 nV/°C Gain = 32 to 128; chop disabled
±5 nV/°C Chop enabled
Offset Error Drift vs. Time 25 nV/1000
hours
Gain > 32
Gain Error
4
±0.001 ±0.005 % max AV
DD
= 5 V, gain = 1, T
A
= 25°C (factory calibration
conditions)
±0.006 % Gain > 1, post internal full-scale calibration
Gain Drift vs. Temperature ±1 ppm/°C
Gain Drift vs. Time 10 ppm/1000
hours
Gain = 1
Power Supply Rejection 95 dB Gain = 1, V
IN
= 1 V
98 103 Gain = 8, V
IN
= 1 V/gain
100 110 dB Gain > 8, V
IN
= 1 V/gain
Common-Mode Rejection
@ DC
2
100 115 dB min Gain = 1, V
IN
= 1 V
@ DC 115 140 dB min Gain > 1, V
IN
= 1 V/gain
@ 50 Hz, 60 Hz
2
120 dB 10 Hz output data rate, 50 ± 1 Hz, 60 ± 1 Hz
@ 50 Hz, 60 Hz
2
120 dB 50 ± 1 Hz (50 Hz output data rate), 60 ± 1 Hz
(60 Hz output data rate)
Normal Mode Rejection
2
Sinc
4
Filter
Internal Clock
@ 50 Hz, 60 Hz 100 dB 10 Hz output data rate, 50 ± 1 Hz, 60 ± 1 Hz
74 dB 50 Hz output data rate, REJ60
6
= 1, 50 ± 1 Hz, 60 ± 1
Hz
@ 50 Hz 96 dB 50 Hz output data rate, 50 ± 1 Hz
@ 60 Hz 97 dB 60 Hz output data rate, 60 ± 1 Hz
External Clock
@ 50 Hz, 60 Hz 120 dB 10 Hz output data rate, 50 ± 1 Hz, 60 ± 1 Hz
82 dB 50 Hz output data rate, REJ60
6
= 1, 50 ± 1 Hz, 60 ± 1 Hz
@ 50 Hz 120 dB 50 Hz output data rate, 50 ± 1 Hz
@ 60 Hz 120 dB 60 Hz output data rate, 60 ± 1 Hz
Sinc
3
Filter
Internal Clock
@ 50 Hz, 60 Hz 75 dB 10 Hz output data rate, 50 ± 1 Hz, 60 ± 1 Hz
60 dB 50 Hz output data rate, REJ60
6
= 1, 50 ± 1 Hz, 60 ± 1 Hz
@ 50 Hz 70 dB 50 Hz output data rate, 50 ± 1 Hz
@ 60 Hz 70 dB 60 Hz output data rate, 60 ± 1 Hz