DESCRIPTION
The 10-bit LTC®1852 and 12-bit LTC1853 are complete 8-channel data acquisition systems. They include a flexible 8-channel multiplexer, a 400ksps successive approximation analog-to-digital converter, an internal reference and a parallel output interface. The multiplexer can be configured for single-ended or differential inputs, two gain ranges and unipolar or bipolar operation. The ADCs have a scan mode that will repeatedly cycle through all 8 multiplexer channels and can also be programmed to sequence through up to 16 addresses and configurations. The sequence can also be read back from internal memory.

FEATURES
■ Flexible 8-Channel Multiplexer
   Single-Ended or Differential Inputs
   Two Gain Ranges
   Unipolar or Bipolar Operation
■ Scan Mode and Programmable Sequencer
   Eliminate Confi guration Software Overhead
■ Low Power: 3mW at 250ksps
■ 2.7V to 5.5V Supply Range
■ Internal or External Reference Operation
■ Parallel Output Includes MUX Address
■ Nap and Sleep Shutdown Modes
■ Pin Compatible up-grade 1.25Msps 10-Bit LTC1850
   and 12-Bit LTC1851

APPLICATIONS
■ High Speed Data Acquisition
■ Test and Measurement
■ Imaging Systems
■ Telecommunications
■ Industrial Process Control
■ Spectrum Analysis