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AD7124-8BCPZ Fiches technique(PDF) 5 Page - Analog Devices

No de pièce AD7124-8BCPZ
Description  8-Channel, Low Noise, Low Power, 24-Bit, Sigma-Delta ADC with PGA and Reference
Download  91 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

AD7124-8BCPZ Fiches technique(HTML) 5 Page - Analog Devices

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Data Sheet
AD7124-8
Rev. B | Page 5 of 91
SPECIFICATIONS
AVDD = 2.9 V to 3.6 V (full power mode), 2.7 V to 3.6 V (mid and low power mode), IOVDD = 1.65 V to 3.6 V, AVSS = DGND = 0 V,
REFINx(+) = 2.5 V, REFINx(−) = AVSS, all specifications TMIN to TMAX, unless otherwise noted.
Table 2.
Parameter1
Min
Typ
Max
Unit
Test Conditions/Comments
ADC
Output Data Rate, fADC
Low Power Mode
1.17
2400
SPS
Mid Power Mode
2.34
4800
SPS
Full Power Mode
9.38
19,200
SPS
No Missing Codes2
24
Bits
FS3 > 2, sinc4 filter
24
Bits
FS3 > 8, sinc3 filter
Resolution
See the RMS Noise and Resolution
section
RMS Noise and Update Rates
See the RMS Noise and Resolution
section
Integral Nonlinearity (INL)
Low Power Mode2
−4
±1
+4
ppm of FSR
Gain = 1
−15
±2
+15
ppm of FSR
Gain > 1, TA = −40°C to +85°C
−20
±2
+20
ppm of FSR
Gain > 1, TA = −40°C to +105°C
Mid Power Mode2
−4
±1
+4
ppm of FSR
Gain = 1
−15
±2
+15
ppm of FSR
Gain > 1
Full Power Mode
−4
±1
+4
ppm of FSR
Gain = 12
−15
±2
+15
ppm of FSR
Gain > 1
Offset Error4
Before Calibration
±15
µV
Gain = 1 to 8
200/gain
µV
Gain = 16 to 128
After Internal Calibration/System
Calibration
In order of
noise
Offset Error Drift vs. Temperature5
Low Power Mode
10
nV/°C
Gain = 1 or gain > 16
80
nV/°C
Gain = 2 to 8
40
nV/°C
Gain = 16
Mid Power Mode
10
nV/°C
Gain = 1 or gain > 16
40
nV/°C
Gain = 2 to 8
20
nV/°C
Gain = 16
Full Power Mode
10
nV/°C
Gain Error4, 6
Before Internal Calibration
−0.0025
+0.0025
%
Gain = 1, TA = 25°C
−0.3
%
Gain > 1
After Internal Calibration
−0.016
+0.004
+0.016
%
Gain = 2 to 8, TA = 25°C
±0.025
%
Gain = 16 to 128
After System Calibration
In order of
noise
Gain Error Drift vs. Temperature
1
2
ppm/°C
Power Supply Rejection
AIN = 1 V/gain, external reference
Low Power Mode
84
dB
Gain = 2 to 16
91
dB
Gain = 1 or gain > 16
Mid Power Mode2
89
dB
Gain = 2 to 16
95
dB
Gain = 1 or gain > 16
Full Power Mode
96
dB


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