AD7190 Analog Devices, AD7190 Datasheet - Page 6

• Manufacturer Part Number: AD7190
• Description: 4.8 kHz Ultra-Low Noise 24-Bit Sigma-Delta ADC with PGA
• Manufacturer: Analog Devices

Specifications of AD7190

• Resolution (bits): 24bit
• # Chan: 4
• Sample Rate: n/a
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref/PGA Gain) p-p
• Adc Architecture: Sigma-Delta
• Pkg Type: SOP

AD7190
Parameter
POWER REQUIREMENTS
1
2
3
4
5
6
7
8
Temperature range: T
Specification is not production tested but is supported by characterization data at initial product release.
FS = decimal equivalent of Bit FS9 to Bit FS0 in the mode register.
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.
The analog inputs are configured for differential mode.
Applies at the factory calibration conditions (AV
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.
Digital inputs equal to DV
Power Supply Voltage
Power Supply Currents
AV
DV
AI
DI
I
DD
DD
DD
DD
DD
(Power-Down Mode)
Current
Current
− AGND
− DGND
MIN
= −40°C, T
DD
8
or DGND.
MAX
= +105°C.
AD7190B
4.75/5.25
2.7/5.25
1
1.3
4.5
4.75
6.2
6.75
0.4
0.6
1.5
2
DD
= 5 V, gain = 1, T
A
= 25
°C
Rev. B | Page 6 of 40
).
Unit
V min/max
V min/max
mA max
mA max
mA max
mA max
mA max
mA max
mA max
mA max
mA typ
μA max
Test Conditions/Comments
0.85 mA typical, gain = 1, buffer off.
1.1 mA typical, gain = 1, buffer on.
3.5 mA typical, gain = 8, buffer off.
4 mA typical, gain = 8, buffer on.
5 mA typical, gain = 16 to 128, buffer off.
5.5 mA typical, gain = 16 to 128, buffer on.
0.35 mA typical, DV
0.5 mA typical, DV
External crystal used.
DD
DD
= 5 V.
= 3 V.
1