GENERAL DESCRIPTION

The AD7171 is a very low power, 16-bit, analog-to-digital converter (ADC). It contains a precision, 16-bit, Σ-Δ ADC and an on-chip oscillator. Consuming only 135 µA, the AD7171 is particularly suitable for portable or battery operated products where very low power is a requirement. The AD7171 also has a power-down mode in which the device consumes 5 μA, thus increasing the battery life of the product.

FEATURES

Output data rate: 125 Hz

Pin-programmable power-down and reset

Status function

Internal clock oscillator

Current: 135 µA

Power supply: 2.7 V to 5.25 V

−40°C to +105°C temperature range

Package: 10-lead 3 mm × 3 mm LFCSP

INTERFACE

2-wire serial (read-only device)

SPI compatible

Schmitt trigger on SCLK

APPLICATIONS

Weigh scales

Pressure measurement

Industrial process control

Portable instrumentation