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AD7294 bảng dữ liệu(PDF) 9 Page - Analog Devices

tên linh kiện AD7294
Giải thích chi tiết về linh kiện  12-Bit, Multichannel, DAC/ADC Temperature Sensor and Current Sense for Monitor and Control Applications
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AD7294 bảng dữ liệu(HTML) 9 Page - Analog Devices

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Preliminary Technical Data
AD7294
Rev. PrB | Page 9 of 45
Pin No.
Mnemonic
Description
and 400 kHz operating modes.
36
OPGND
Dedicated Ground Pin for I2C Interface.
37
VDRIVE
This pin should be connected to the supply that the I2C bus is pulled up to. This is not a supply
pin in I2C mode—it just sets up the input threshold levels.
38
DGND
Ground for All Digital Circuitry.
39
DVDD
Logic Power Supply. Guaranteed operating range is 2.7 V to 5.5 V. It is recommended that these
pins be decoupled with 0.1 µF ceramic and 10 µF tantalum capacitors to DGND.
40, 41
ISENSE1 Overrange,
ISENSE2 Overrange
Outputs from Fault Comparators Connected to High-Side Current Sense Amplifiers.
43 to 46
VIN3 to VIN0
Single-Ended Analog Inputs with Input Range from 0 V to REFIN/REFOUT ADC.
47
REFOUT/REFIN ADC
The AD7294 contains REFOUT/REFIN ADC pin for the ADC. When the internal reference is
selected, this pin is the reference output. If the application requires an external reference, it can
be applied to this pin, and the internal reference can be disabled via the control register. The
default for this pin is a reference input.
48
DCAP
External Decoupling Capacitor Input for Internal Temperature Sensor. A 0.1 μF capacitor to
AGND should be connected to this pin.
55, 56
VPP1, VPP2
Analog Supply Pins. Power supply pins for the high-side current sense amplifiers. Operating
range is from AVDD to +60 V.



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