Datasheet

AD7190 Data Sheet
Rev. C | Page 6 of 40
Parameter AD7190B Unit Test Conditions/Comments
1
POWER REQUIREMENTS
8
Power Supply Voltage
AV
DD
− AGND 4.75/5.25 V min/max
DV
DD
− DGND 2.7/5.25 V min/max
Power Supply Currents
AI
DD
Current 1 mA max 0.85 mA typical, gain = 1, buffer off.
1.3 mA max 1.1 mA typical, gain = 1, buffer on.
B Grade 4.5 mA max 3.5 mA typical, gain = 8, buffer off.
4.75 mA max 4 mA typical, gain = 8, buffer on.
6.2 mA max 5 mA typical, gain = 16 to 128, buffer off.
6.75 mA max 5.5 mA typical, gain = 16 to 128, buffer on.
WB Grade 5 mA max 3.5 mA typical, gain = 8, buffer off.
5.3 mA max 4 mA typical, gain = 8, buffer on.
6.8 mA max 5 mA typical, gain = 16 to 128, buffer off.
7.4 mA max 5.5 mA typical, gain = 16 to 128, buffer on.
DI
DD
Current 0.4 mA max 0.35 mA typical, DV
DD
= 3 V.
0.6 mA max 0.5 mA typical, DV
DD
= 5 V.
1.5 mA typ External crystal used.
I
DD
(Power-Down Mode)
B Grade 2 μA max
WB Grade 5 μA max
1
Temperature range: T
MIN
= −40°C, T
MAX
= +105°C.
2
Specification is not production tested but is supported by characterization data at initial product release.
3
FS = decimal equivalent of Bit FS9 to Bit FS0 in the mode register.
4
Following a system or internal zero-scale calibration, the offset error is in the order of the noise for the programmed gain and output data rate selected. A system full-
scale calibration reduces the gain error to the order of the noise for the programmed gain and output data rate.
5
The analog inputs are configured for differential mode.
6
Applies at the factory calibration conditions (AV
DD
= 5 V, gain = 1, T
A
= 25°C).
7
REJ60 is a bit in the mode register. When the output data rate is set to 50 Hz, setting REJ60 to 1 places a notch at 60 Hz, allowing simultaneous 50 Hz/60 Hz rejection.
8
Digital inputs equal to DV
DD
or DGND.