Datasheet

Data Sheet AD7193
Rev. D | Page 5 of 56
Parameter Min Typ Max Unit Test Conditions/Comments
1
Normal-Mode Rejection
2
Sinc
4
Filter
Internal Clock
@ 50 Hz, 60 Hz 100 dB
10 Hz output data rate, 50 Hz ± 1 Hz,
60 Hz ± 1 Hz
74 dB
50 Hz output data rate, REJ60
6
= 1,
50 Hz ± 1 Hz, 60 Hz ± 1 Hz
@ 50 Hz 96 dB 50 Hz output data rate, 50 Hz ± 1 Hz
@ 60 Hz 97 dB 60 Hz output data rate, 60 Hz ± 1 Hz
External Clock
@ 50 Hz, 60 Hz 120 dB
10 Hz output data rate, 50 Hz ± 1 Hz,
60 Hz ± 1 Hz
82 dB
50 Hz output data rate, REJ60
6
= 1,
50 Hz ± 1 Hz, 60 Hz ± 1 Hz
@ 50 Hz
120
dB
50 Hz output data rate, 50 Hz ± 1 Hz
@ 60 Hz 120 dB 60 Hz output data rate, 60 Hz ± 1 Hz
Sinc
3
Filter
Internal Clock
@ 50 Hz, 60 Hz 75 dB
10 Hz output data rate, 50 Hz ± 1 Hz,
60 Hz ± 1 Hz
60 dB
50 Hz output data rate, REJ60
6
= 1,
50 Hz ± 1 Hz, 60 Hz ± 1 Hz
@ 50 Hz 70 dB 50 Hz output data rate, 50 Hz ± 1 Hz
@ 60 Hz 70 dB 60 Hz output data rate, 60 Hz ± 1 Hz
External Clock
@ 50 Hz, 60 Hz 100 dB
10 Hz output data rate, 50 Hz ± 1 Hz,
60 Hz ± 1 Hz
@ 50 Hz 67 dB
50 Hz output data rate, REJ60
6
= 1,
50 Hz ± 1 Hz, 60 Hz ± 1 Hz
@ 50 Hz 95 dB 50 Hz output data rate, 50 Hz ± 1 Hz
@ 60 Hz 95 dB 60 Hz output data rate, 60 Hz ± 1 Hz
Fast Settling
Internal Clock
@ 50 Hz 26 dB
FS[9:0]
3
= 6, average by 16, 50 Hz ± 0.5 Hz
@ 60 Hz 26 dB
FS[9:0]
3
= 5, average by 16, 60 Hz ± 0.5 Hz
External Clock
@ 50 Hz 40 dB
FS[9:0]
3
= 6, average by 16, 50 Hz ± 0.5 Hz
@ 60 Hz 40 dB
FS[9:0]
3
= 5, average by 16, 60 Hz ± 0.5 Hz
ANALOG INPUTS
Differential Input
Voltage Ranges
±V
REF
/gain V V
REF
= REFINx(+) − REFINx(−), gain = 1 to 128
−(AV
DD
− 1.25 V)/gain +(AV
DD
− 1.25 V)/gain V Gain > 1
Absolute AIN Voltage
Limits
2
Unbuffered Mode AGND − 0.05 AV
DD
+ 0.05 V
Buffered Mode AGND + 0.25 AV
DD
− 0.25 V
Analog Input Current
Buffered Mode
Input Current
2
−2 +2 nA Gain = 1
−3 +3 nA Gain > 1
Input Current Drift ±5 pA/°C
Unbuffered Mode
Input Current ±3.5 µA/V
Gain = 1, input current varies with input
voltage
±1 µA/V Gain > 1
Input Current Drift ±0.05 nA/V/°C External clock
±1.6 nA/V/°C Internal clock