GENERAL DESCRIPTION

The AD7457 is a 12-bit, low power, successive approximation (SAR) analog-to-digital converter that features a pseudo differential analog input. This part operates from a single 2.7 V to 5.25 V power supply and features throughput rates of up to 100 kSPS.

FEATURES

Specified for VDD of 2.7 V to 5.25 V

Low power:

0.9 mW max at 100 kSPS with VDD = 3 V

3 mW max at 100 kSPS with VDD = 5 V

Pseudo differential analog input

Wide input bandwidth:

70 dB SINAD at 30 kHz input frequency

Flexible power/serial clock speed management

No pipeline delays

High speed serial interface—SPI®-/QSPI™-/

MICROWIRE™-/DSP-compatible

Automatic power-down mode

8-lead SOT-23 package

APPLICATIONS

Transducer interface

Battery-powered systems

Data acquisition systems

Portable instrumentation