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MFG:AD D/C:07+
Part Number: AD7912ARM
MFG: AD
D/C: 07+
Description: The AD7912/AD79221 are 10-bit and 12-bit, high speed, low power, 2-channel successive approximation AD...
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AD7912ARM
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DataSheet
General Description
AD7912ARM General Description
The AD7912/AD79221 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 of up to 1 MSPS. The parts contain a low noise, wide bandwidth track-and-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 conversion rate is determined by the SCLK signal. The input signal is sampled on the falling edge of CS and the conversion is also initiated at this point. 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 mode identifier bit, which provide information about the converted channel and the current mode of operation.
AD7912ARM Maximum Ratings
Parameter Rating
VDD to GND −0.3 V to +7 V
Analog Input Voltage to GND −0.3 V to VDD + 0.3 V
Digital Input Voltage to GND −0.3 V to +7 V
Digital Output Voltage to GND −0.3 V to VDD + 0.3 V
Input Current to Any Pin except Supplies1 ±10 mA
Operating Temperature Range
Commercial (A Grade) −40°C to +85°C
Storage Temperature Range −65°C to +150°C
Junction Temperature 150°C
TSOT Package
JA Thermal Impedance 207°C/W
MSOP Package
JA Thermal Impedance 205.9°C/W
JC Thermal Impedance 43.74°C/W
Lead Temperature Soldering
Reflow (10 s to 30 s) 235 (0/+5)°C
ESD 1.5 kV
AD7912ARM Features
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
15.5mW typ at 1 MSPS with 5 V supplies
Wide input bandwidth:
71 dB minimum 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 A maximum
Daisy-chain mode
8-lead TSOT package
8-lead MSOP package
Specified for VDD of 2.35 V to 5.25 V
Low power:
4.8 mW typ at 1 MSPS with 3 V supplies
15.5mW typ at 1 MSPS with 5 V supplies
Wide input bandwidth:
71 dB minimum 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 A maximum
Daisy-chain mode
8-lead TSOT package
8-lead MSOP package
AD7912ARM Typical Application
Battery-powered systems:
Personal digital assistants
Medical instruments
Mobile communications
Instrumentation and control systems
Data acquisition systems
High speed modems
Optical sensors
Personal digital assistants
Medical instruments
Mobile communications
Instrumentation and control systems
Data acquisition systems
High speed modems
Optical sensors
AD7912ARM
PDF/DataSheet Download
- Datasheet: AD7912ARM
- File Size: 395682 KB
- Manufacturer: AD [Analog Devices]
- Click here to Download
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AD7912ARM Relative Products
AD7912
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
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