General Description

The AS1538/AS1540 are single-supply, low-power, 12-bit data acquisition devices featuring a serial I²C interface and an 8-channel (AS1538) or 4-channel (AS1540) multiplexer.

The analog-to-digital (A/D) converters features a sample-and-hold amplifier an internal asynchronous clock and an internal reference.

Key Features

Single Supply: 2.7 to 5.25V

8-Channel Multiplexer (AS1538)

4-Channel Multiplexer (AS1540)

Sampling Rate: 50kSPS

No Missing Codes

Internal Reference: 2.5V

High Speed I2C Interface at 3.4MHz

<1.5µA Full Shutdown Current

TSSOP-16 or TQFN 4x4 16-pin Package

Applications

The device is ideal for voltage-supply monitoring, isolated data acquisition, transducer interfaces, battery operated systems, remote data acquisition or any other analog-to-digital conversion application.