AD7195 Analog Devices, AD7195 Datasheet - Page 3

• Manufacturer Part Number: AD7195
• Description: 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA and AC Excitation
• Manufacturer: Analog Devices

Specifications of AD7195

• Resolution (bits): 24bit
• # Chan: 4
• Sample Rate: n/a
• Interface: Ser,SPI
• Analog Input Type: Diff-Bip,Diff-Uni,SE-Bip,SE-Uni
• Ain Range: (2Vref/PGA Gain) p-p
• Adc Architecture: Sigma-Delta
• Pkg Type: CSP

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