GENERAL DESCRIPTION

The AD7866 is a dual 12-bit high speed, low power, successive approximation ADC. The part operates from a single 2.7 V to 5.25 V power supply and features throughput rates up to 1 MSPS. The device contains two ADCs, each preceded by a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 10 MHz.

FEATURES

Dual 12-Bit, 2-Channel ADC

Fast Throughput Rate: 1 MSPS

Specified for VDD of 2.7 V to 5.25 V

Low Power

11.4 mW Max at 1 MSPS with 3 V Supplies

24 mW Max at 1 MSPS with 5 V Supplies

Wide Input Bandwidth

70 dB SNR at 300 kHz Input Frequency

On-Board Reference 2.5 V

–40°C to +125°C Operation

Flexible Power/Throughput Rate Management

Simultaneous Conversion/Read

No Pipeline Delays

High Speed Serial Interface SPI™/QSPI™/

MICROWIRE™/DSP Compatible

Shutdown Mode: 1 A Max

20-Lead TSSOP Package