AD7798BRUZ View Datasheet(PDF) - Analog Devices
Part Name
Description
MFG CO.
AD7798BRUZ Datasheet PDF : 28 Pages
| |||
Data Sheet
AD7798/AD7799
SPECIFICATIONS
AVDD = 2.7 V to 5.25 V; DVDD = 2.7 V to 5.25 V; GND = 0 V; REFIN(+) = AVDD; REFIN(−) = 0 V. All specifications TMIN to TMAX, unless
otherwise noted.
Table 1.
Parameter
ADC CHANNEL
Output Update Rate
No Missing Codes2
Resolution
Output Noise and Update Rates
Integral Nonlinearity
Offset Error3
Offset Error Drift vs. Temperature4
Full-Scale Error3, 5
Gain Drift vs. Temperature4
Power Supply Rejection
ANALOG INPUTS
Differential Input Voltage Ranges
Absolute AIN Voltage Limits2
AD7798B/AD7799B1 Unit
Test Conditions/Comments
4.17 − 470
24
16
±15
±1
±10
±10
±1
100
Hz nom
Bits min
Bits min
ppm of FSR max
µV typ
nV/°C typ
µV typ
ppm/°C typ
dB min
AD7799: fADC < 242 Hz
AD7798
See Table 5 to Table 8
See Table 5 to Table 8
AIN = 1 V/gain, gain ≥ 4
±VREF/gain
V nom
VREF = REFIN(+) – REFIN(–), gain = 1 to 128
Unbuffered Mode
Buffered Mode
In-Amp Active
Common-Mode Voltage, VCM
Analog Input Current
Buffered Mode or In-Amp Active
Average Input Current2
Average Input Current Drift
Unbuffered Mode
Average Input Current
Average Input Current Drift
Normal Mode Rejection2
@ 50 Hz, 60 Hz
@ 50 Hz
@ 60 Hz
Common-Mode Rejection
@ DC
@ 50 Hz, 60 Hz2
@ 50 Hz, 60 Hz2
GND − 30 mV
AVDD + 30 mV
GND + 100 mV
AVDD – 100 mV
GND + 300 mV
AVDD − 1.1
0.5
±1
±250
±1
±2
±400
±50
65
80
90
100
100
100
V min
V max
V min
V max
V min
V max
V min
nA max
pA max
nA max
pA/°C typ
nA/V typ
pA/V/°C typ
dB min
dB min
dB min
dB min
dB min
dB min
Gain = 1 or 2
Gain = 1 or 2
Gain = 4 to 128
VCM = (AIN(+) + AIN(−))/2, gain = 4 to 128
Gain = 1 or 2, update rate < 100 Hz
Gain = 4 to 128, update rate < 100 Hz
AIN3(+)/AIN3(−), update rate < 100 Hz
Gain = 1 or 2
Input current varies with input voltage
80 dB typ, 50 ± 1 Hz, 60 ± 1 Hz (FS[3:0] = 1010)6
90 dB typ, 50 ± 1 Hz (FS[3:0] = 1001)6
100 dB typ, 60 ± 1 Hz (FS[3:0] = 1000)6
AIN = 1 V/gain, gain ≥ 4
50 ± 1 Hz, 60 ± 1 Hz (FS[3:0] = 1010)6
50 ± 1 Hz (FS[3:0] = 10016), 60 ± 1 Hz
(FS[3:0] = 10006)
Rev. B | Page 3 of 28
Share Link: 