GENERAL DESCRIPTION

The AD7298 is a 12-bit, high speed, low power, 8-channel, successive approximation ADC with an internal temperature sensor. The part operates from a single 3.3 V power supply and features throughput rates up to 1 MSPS. The device contains a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 30 MHz.

FEATURES

12-bit SAR ADC

8 single-ended inputs

Channel sequencer functionality

Fast throughput of 1 MSPS

Analog input range: 0 V to 2.5 V

12-bit temperature-to-digital converter

Temperature sensor accuracy of ±1°C

Temperature range: −40°C to +125°C

Specified for VDD: 2.8 V to 3.6 V

Logic voltage VDRIVE : 1.65 V to 3.6 V

Power-down current: <10 μA

Internal 2.5 V reference

Internal power-on reset

High speed serial interface SPI

20-lead LFCSP