GENERAL DESCRIPTION

The AD7091 is a 12-bit successive approximation register analog-to-digital converter (SAR ADC) that offers ultralow power consumption (typically 367 µA at 3 V and 1 MSPS) while achieving fast throughput rates (1 MSPS with a 50 MHz SCLK). The AD7091 operates from a single 2.09 V to 5.25 V power supply. The AD7091 also features an on-chip conversion clock and a high speed serial interface.

FEATURES

Fast throughput rate of 1 MSPS

Specified for VDD of 2.09 V to 5.25 V

INL of ±1 LSB maximum

Analog input range of 0 V to VDD

Ultralow power

367 µA typical at 3 V and 1 MSPS

324 nA typical at 3 V in power-down mode

Reference provided by VDD

Flexible power/throughput rate management

High speed serial interface: SPI®-/QSPI™-/MICROWIRE®-/

DSP-compatible

Busy indicator

Power-down mode

8-lead, 2 mm × 2 mm LFCSP package

Temperature range: −40°C to +125°C

APPLICATIONS

Battery-powered systems

Handheld meters

Medical instruments

Mobile communications

Instrumentation and control systems

Data acquisition systems

Optical sensors

Diagnostic/monitoring functions

Energy harvesting