AD7195_15 Datasheet, PDF (4/45 Pages) Analog Devices – 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA and AC Excitation

AD7195
SPECIFICATIONS
AVDD = 4.75 V to 5.25 V, DVDD = 2.7 V to 5.25 V, AGND = DGND = 0 V; REFIN(+) = AVDD, REFIN(−) = AGND, MCLK = 4.92 MHz,
TA = TMIN to TMAX, unless otherwise noted.
Table 1.
Parameter
Min
ADC
Output Data Rate
4.7
1.17
1.56
No Missing Codes²
24
24
Resolution
RMS Noise and Output
Data Rates
Integral Nonlinearity
Gain = 1²
Gain > 1
Offset Error^{4, 5}
Offset Error Drift vs.
Temperature
Offset Error Drift vs. Time
Gain Error⁴
Gain Drift vs. Temperature
Gain Drift vs. Time
Power Supply Rejection
98
100
Common-Mode Rejection
@ DC²
100
@ DC
115
@ 50 Hz, 60 Hz²
120
@ 50 Hz, 60 Hz²
120
Normal Mode Rejection²
Sinc⁴ Filter
Internal Clock
@ 50 Hz, 60 Hz
100
74
@ 50 Hz
96
@ 60 Hz
97
External Clock
@ 50 Hz, 60 Hz
120
82
@ 50 Hz
120
@ 60 Hz
120
Sinc³ Filter
Internal Clock
@ 50 Hz, 60 Hz
75
60
@ 50 Hz
70
@ 60 Hz
70
Typ
Max
4800
1200
1600
±1
±5
±75/gain
±0.5
±100/gain
±5
±5
25
±0.001
±0.006
±1
10
95
103
110
115
140
±5
±15
±0.005
Unit
Test Conditions/Comments¹
Hz
Chop disabled
Hz
Chop enabled, sinc⁴ filter
Hz
Chop enabled, sinc³ filter
Bits
FS > 1, sinc⁴ filter³
Bits
FS > 4, sinc³ filter³
See the RMS Noise and Resolution section
See the RMS Noise and Resolution section
ppm of FSR
ppm of FSR
μV
μV
nV/°C
Chop disabled
Chop enabled
Gain = 1 to 16; chop disabled
nV/°C
nV/°C
nV/1000
hours
% max
%
ppm/°C
ppm/1000
hours
dB
dB
Gain = 32 to 128; chop disabled
Chop enabled
Gain > 32
AVDD = 5 V, gain = 1, TA = 25°C (factory calibration
conditions)
Gain > 1, post internal full-scale calibration
Gain = 1
Gain = 1, VIN = 1 V
Gain = 8, VIN = 1 V/gain
Gain > 8, VIN = 1 V/gain
dB min
dB min
dB
dB
Gain = 1, VIN = 1 V
Gain > 1, VIN = 1 V/gain
10 Hz output data rate, 50 ± 1 Hz, 60 ± 1 Hz
50 ± 1 Hz (50 Hz output data rate), 60 ± 1 Hz
(60 Hz output data rate)
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Rev. 0 | Page 3 of 44
10 Hz output data rate, 50 ± 1 Hz, 60 ± 1 Hz
50 Hz output data rate, REJ60⁶ = 1, 50 ± 1 Hz, 60 ± 1
Hz
50 Hz output data rate, 50 ± 1 Hz
60 Hz output data rate, 60 ± 1 Hz
10 Hz output data rate, 50 ± 1 Hz, 60 ± 1 Hz
50 Hz output data rate, REJ60⁶ = 1, 50 ± 1 Hz, 60 ± 1 Hz
50 Hz output data rate, 50 ± 1 Hz
60 Hz output data rate, 60 ± 1 Hz
10 Hz output data rate, 50 ± 1 Hz, 60 ± 1 Hz
50 Hz output data rate, REJ60⁶ = 1, 50 ± 1 Hz, 60 ± 1 Hz
50 Hz output data rate, 50 ± 1 Hz
60 Hz output data rate, 60 ± 1 Hz