AD7194 Analog Devices, AD7194 Datasheet - Page 3

• Manufacturer Part Number: AD7194
• Description: 8-Channel, 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA
• Manufacturer: Analog Devices

Specifications of AD7194

• Resolution (bits): 24bit
• # Chan: 8
• Sample Rate: n/a
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref/PGA Gain) p-p
• Adc Architecture: Sigma-Delta
• Pkg Type: CSP

SPECIFICATIONS
AV
MCLK = 4.92 MHz, T
Table 1.
Parameter
ADC
Output Data Rate
No Missing Codes
Resolution
RMS Noise and Output
Integral Nonlinearity
Offset Error
Offset Error Drift vs.
Gain Error
Gain Drift vs.
Power Supply Rejection
Common-Mode Rejection
DD
Data Rates
Gain = 1
Gain > 1
Temperature
Temperature
@ DC
@ DC
@ 50 Hz, 60 Hz
@ 50 Hz
@ 60 Hz
@ 50 Hz
@ 60 Hz
= 3 V to 5.25 V, DV
4
2
2
2
2
2
4 , 5
2
2
A
= T
DD
MIN
4.7
105
Min
1.17
1.56
24
24
95
120
120
120
115
115
= 2.7 V to 5.25 V, AGND = DGND = 0 V; REFINx(+) = +2.5 V or AV
to T
MAX
, unless otherwise noted.
Typ
±2
±2
±5
±15
±150/gain
±1
±0.5
±150/gain
±5
±5
±0.001
−0.4
±0.003
±0.005
±1
90
110
110
120
Rev. 0 | Page 3 of 56
Max
4800
1200
1600
±10
±15
±30
±30
Unit
Hz
Hz
Hz
Bits
Bits
ppm of FSR
ppm of FSR
ppm of FSR
ppm of FSR
μV
μV
μV
nV/°C
nV/°C
nV/°C
%
%
%
%
ppm/°C
dB
dB
dB
dB
dB
dB
dB
dB
dB
DD
, REFINx(−) = AGND,
Test Conditions/Comments
Chop disabled
Chop enabled, sinc
Chop enabled, sinc
FS[9:0]
FS[9:0]
See the RMS Noise and Resolution section
See the RMS Noise and Resolution section
AV
AV
AV
AV
Chop disabled
Chop enabled, AV
Chop enabled, AV
Gain = 1 to 16; chop disabled
Gain = 32 to 128; chop disabled
Chop enabled
AV
calibration conditions)
Gain = 128, before full-scale calibration
(see Table 27)
Gain > 1, after internal full-scale
calibration, AV
Gain > 1, after internal full-scale
calibration, AV
Gain = 1, V
Gain > 1, V
Gain = 1, V
Gain > 1, V
10 Hz output data rate, 50 Hz ± 1 Hz,
60 Hz ± 1 Hz
50 Hz output data rate, 50 Hz ± 1 Hz
60 Hz output data rate, 60 Hz ± 1 Hz
Fast settling, FS[9:0]
50 Hz ± 1 Hz
Fast settling, FS[9:0]
60 Hz ± 1 Hz
DD
DD
DD
DD
DD
= 5 V
= 3 V
= 5 V
= 3 V
= 5 V, gain = 1, T
3
3
> 4, sinc
> 1, sinc
IN
IN
IN
IN
= 1 V
= 1 V/gain
= 1 V
= 1 V/gain
DD
DD
3
4
≥ 4.75 V
< 4.75 V
filter
filter
DD
DD
4
3
3
3
filter
filter
= 5 V
= 3 V
= 6, average by 16,
= 5, average by 16,
A
= 25°C (factory
AD7194
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