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AD7291BCPZ Datasheet(PDF) 5 Page - Analog Devices

Part # AD7291BCPZ
Description  8-Channel, I2C, 12-Bit SAR ADC with Temperature Sensor
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7291BCPZ Datasheet(HTML) 5 Page - Analog Devices

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AD7291
Data Sheet
Rev. C | Page 4 of 28
Parameter
Min
Typ
Max
Unit1
Test Conditions/Comments
Floating State Leakage Current
±0.01
±1
µA
Floating State Output Capacitance3
8
pF
TEMPERATURE SENSOR—INTERNAL
Operating Range
−40
+125
°C
Accuracy
±1
±2
°C
TA = −40°C to +85°C
±1
±3
°C
TA = 85°C to 125°C
Resolution
0.25
°C
LSB size
CONVERSION RATE
Conversion Time
3.2
μs
Autocycle Update Rate6
50
μs
Throughput Rate
22.22
kSPS
fSCL = 400 kHz
POWER REQUIREMENTS
Digital inputs = 0 V or VDRIVE
VDD
2.8
3
3.6
V
VDRIVE
1.65
3
3.6
V
ITOTAL7, 8
Normal Mode (Operational)
2.9
3.5
mA
Normal Mode (Static)
2.9
3.3
mA
Full Power-Down Mode
0.3
1.6
μA
TA = −40°C to +25°C
1.6
4.5
μA
TA = >25°C to 85°C
4.9
12
μA
TA = >85°C to 125°C
Power Dissipation8
Normal Mode (Operational)
8.7
10.5
mW
VDD = 3 V, VDRIVE = 3 V
10.4
12.6
mW
Normal Mode (Static)
10.4
11.9
mW
Full Power-Down Mode
1.1
5.8
µW
TA = −40°C to +25°C
5.8
16.2
µW
TA = >25°C to 85°C
17.6
43.2
µW
TA = >85°C to 125°C
1
All specifications expressed in decibels are referred to full-scale input, FSR, and tested with an input signal at 0.5 dB below full scale, unless otherwise specified.
2
See the Terminology section.
3
Sample tested during initial release to ensure compliance.
4
Refers to Pin
VREF specified for 25oC.
5
A correction factor can be required on the temperature sensor results when using an external VREF (see the Temperature Sensor Averaging section).
6
Sampled during initial release to ensure compliance; not subject to production testing.
7
ITOTAL is the total current flowing in VDD and VDRIVE.
8
ITOTAL and power dissipation are specified with VDD = VDRIVE = 3.6 V, unless otherwise noted.


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