GENERAL DESCRIPTION

The AD7273/AD7274 are 10-/12-bit, high speed, low power, successive approximation ADCs, respectively. The parts operate from a single 2.35 V to 3.6 V power supply and feature throughput rates of up to 3 MSPS. Each part contains a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 55 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 1.4 V to VDD. This allows the widest dynamic input range to the ADC.

FEATURES

Throughput rate: 3 MSPS

Specified for VDD of 2.35 V to 3.6 V

Power consumption

11.4 mW at 3 MSPS with 3 V supplies

Wide input bandwidth

70 dB SNR at 1 MHz input frequency

Flexible power/serial clock speed management

No pipeline delays

High speed serial interface

SPI?-/QSPI?-/MICROWIRE?-/DSP-compatible

Temperature range: ?40°C to +125°C

Power-down mode: 0.1 μA typ

8-lead TSOT package

8-lead MSOP package