AD7912 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD7912
Manufacturer

ADI
ChipWorker Part#

CW480100066
Description

2Channel, 2.35V to 5.25V, 1MSPS, 10Bit A/D Converter
Documentation

Datasheet

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AD7912 Specifications

Attribute	Attribute Value

Part Number	AD7912
Manufacturer	ADI
ChipWorker Part#	CW480100066
Documentation	Datasheet
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Product Lifecycle Status	Active

Product Description

Product Details
The AD7912/AD7922 are 10-bit and 12-bit, high speed, low power, 2-channel, successive-approximation ADCs respectively. The parts operate from a single 2.35 V to 5.25 V power supply and feature throughput rates up to 1 MSPS. The parts contain a low-noise, wide bandwidth track/hold amplifier, which can handle input frequencies in excess of 6 MHz.
The conversion process and data acquisition are controlled using CS and the serial clock, allowing the devices to interface with microprocessors or DSPs. The input signal is sampled on the falling edge of CS and the conversion is also initiated at this point. There are no pipeline delays associated with the part.
The channel to be converted is selected through the DIN pin and the mode of operation is controlled by CS. The serial data stream from the DOUT pin has a channel identifier bit and a mode identifier bit, which provide information about the channel converted and the current mode of operation.
As a result of the Daisy Chain mode of operation, several AD7912/AD7922 can be connected together in Daisy Chain configuration. The Daisy Chain mode allows the user to read the conversion result from the ADCs contained in the chain.
The AD7912/AD7922 use advanced design techniques to achieve very low power dissipation at high throughput rates.
The reference for the part is taken internally from VDD. This allows the widest dynamic input range to the ADC. Thus the analog input range for the part is 0 to VDD. The conversion rate is determined by the SCLK signal.
### Features and Benefits
Fast Throughput Rate: 1 MSPS
Specified for VDD of 2.35 V to 5.25 V
Low Power:
4.8 mW typ at 1 MSPS with 3 V Supplies
15.5 mW typ at 1 MSPS with 5 V Supplies
Wide Input Bandwidth:
71.5 min dB SNR at 100 kHz Input Frequency
Flexible Power/Serial Clock Speed Management
No Pipeline Delays
High Speed Serial Interface SPI®/QSPI™ /MICROWIRE™ /DSP Compatible
Standby Mode: 1 µA max
Daisy Chain Mode
8-Lead TSOT Package
8-Lead MSOP Package

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