General Description

The AS1545 is a dual, 12-bit, 6-channel, 1 MSPS, high speed, successive approximation (SAR) analog-to-digital converters (ADCs). The AS1545 is designed to operate with a single +2.7V to +5.25V supply and a sampling rate of up to 1 MSPS.

Key Features

Sampling Rate: 1MSPS per ADC

Dual 12-bit serial interface

Software Configurable Analog Input Types:

  - 12-Channel Single-Ended

  - 6-Channel Pseudo-Differential

  - 6-Channel Fully Differential

Internal +2.5V Reference or External: 1V to VDD

Rail to Rail Common Mode Input Range

Low-Power Consumption

  - 15mW max. at 1MSPS with 2.7V supplies

  - 37mW max. at 1MSPS with 5.25V supplies

Dual conversion with read at 20 MHz SCLK

Single-Supply Operation: +2.7V to +5.25V

Motor Control Registers: Difference of Inputs, Quadrature Signal Phases, Direction and Step Down Counter

32-lead TQFN Package

Applications

The device is ideal for motor control like encoder feed back or current sense, motion control such as robotics, sonar, or for any other radio frequency identification.