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GENERAL DESCRIPTION

The AD7273/AD7274 are 10-bit and 12-bit, high speed, low power, successive-approximation ADCs respectively. The parts operate from a single 2.35V to 3.6 V power supply and feature throughput rates up to 3 MSPS. The parts contain a low-noise, wide bandwidth track/hold amplifier which can handle input frequencies in excess of TBD MHz.

The AD7273/AD7274 use advanced design techniques to achieve very low power dissipation at high throughput rates.

The reference for the parts is applied externally and can be in the range of 1.2V to VDD. This allows the widest dynamic input range to the ADC.

FEATURES

Fast Throughput Rate: 3MSPS

Specified for VDD of 2.35 V to 3.6V

Low Power:

13.5 mW max at 3MSPS with 3V Supplies

Wide Input Bandwidth:

70dB SNR at 1MHz Input Frequency

Flexible Power/Serial Clock Speed Management

No Pipeline Delays

High Speed Serial Interface

SPI?/QSPI?/MICROWIRE?/DSP Compatible

Power Down Mode: 1?A max

8-Lead TSOT Package

8-Lead MSOP Package

APPLICATIONS

Battery-Powered Systems

Personal Digital Assistants

Medical Instruments

Mobile Communications

Instrumentation and Control Systems

Data Acquisition Systems

High-Speed Modems

Optical Sensors