AD7781CRZ-REEL Ver la hoja de datos (PDF) - Analog Devices
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AD7781CRZ-REEL Datasheet PDF : 16 Pages
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AD7781
SPECIFICATIONS
AVDD = 2.7 V to 5.25 V, VREF = AVDD, DVDD = 2.7 V to 5.25 V, GND = 0 V, all specifications TMIN to TMAX, unless otherwise noted.1
Table 2.
Parameter
ADC CHANNEL
Output Update Rate (fADC)
No Missing Codes2
Resolution, Peak-to-Peak
RMS Noise
Integral Nonlinearity
Offset Error
Offset Error Drift vs. Temperature
Full-Scale Error
Gain Drift vs. Temperature
Power Supply Rejection
Normal Mode Rejection2
50 Hz, 60 Hz
Common-Mode Rejection
DC
50 Hz, 60 Hz
ANALOG INPUTS
Differential Input Voltage Range
Absolute AIN Voltage Limits2
Average Input Current
Average Input Current Drift
REFERENCE
External REFIN Voltage
Reference Voltage Range2
Absolute REFIN Voltage Limits2
Average Reference Input Current
Average Reference Input Current
Drift
Normal Mode Rejection
Common-Mode Rejection
BRIDGE POWER-DOWN SWITCH
(BPDSW)
RON
Allowable Current2
Min
20
63
72
GND + 100 mV
GND + 450 mV
GND + 1.1
GND + 1.5
0.5
GND − 30 mV
Typ
Max
Unit
Test Conditions/Comments
10
16.7
±6
±6
±200
±1
±10
±10
±150
±10
±0.25
±2
100
120
Hz
Hz
Bits
ppm FSR
μV
μV
μV
μV
nV/°C
nV/°C
nV/°C
% of FS
ppm/°C
dB
dB
FILTER = 1, settling time = 3/fADC
FILTER = 0, settling time = 2/fADC
See Table 7 and Table 8
See Table 7 and Table 8
Gain = 128 with FILTER = 1
Gain = 1 with FILTER = 1
Gain = 128 with FILTER = 0
Gain = 1 with FILTER = 0
Gain = 128
Gain = 1 with FILTER = 1
Gain = 1 with FILTER = 0
Gain = 128, FILTER = 1, AIN = 7.81 mV
Gain = 128, FILTER = 0, AIN = 7.81 mV
75
dB
50 Hz ± 1 Hz, 60 Hz ± 1 Hz, fADC = 16.7 Hz
90
dB
50 Hz ± 1 Hz, 60 Hz ± 1 Hz, fADC = 10 Hz
90
dB
Gain = 1, AIN = 1 V
90
dB
Gain = 128, AIN = 7.81 mV
110
dB
50 Hz ± 1 Hz, 60 Hz ± 1 Hz
±VREF/gain
V
±1
±250
±3
AVDD − 100 mV
AVDD − 1.1
AVDD − 1.1
AVDD − 1.5
V
V
V
V
nA
pA
pA/°C
VREF = REFIN(+) − REFIN(−),
gain = 1 or 128
Gain = 1
Gain = 128, FILTER = 0
Gain = 128, FILTER = 1, AVDD ≤ 3.6 V
Gain = 128, FILTER = 1, AVDD > 3.6 V
Gain = 1
Gain = 128
AVDD
400
±0.15
110
AVDD
AVDD + 30 mV
V
V
V
nA/V
nA/V/°C
REFIN = REFIN(+) − REFIN(−)
Same as for analog inputs
dB
Controlled via the PDRST pin
9
Ω
30
mA
Continuous current
Rev. 0 | Page 3 of 16
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