LTC1289 - 3 Volt Single Chip 12-Bit Data Acquisition System

The LTC1289 is a 3V data acquisition component which contains a serial I/O successive approximation A/D converter. The device specifications are guaranteed at a supply voltage of 2.7V. It uses LTCMOS™ switched capacitor technology to perform a 12-bit unipolar, or 11-bit plus sign bipolar A/D conversion. The 8 channel input multiplexer can be configured for either single-ended or differential inputs (or combinations thereof). An on-chip sample and hold is included for all single-ended input channels. When the LTC1289 is idle it can be powered down in applications where low power consumption is desired.

The serial I/O is designed to be compatible with industry standard full duplex serial interfaces. It allows either MSB- or LSB- first data and automatically provides 2’s complement output coding in the bipolar mode. The output data word can be programmed for a length of 8, 12 or 16 bits. This allows easy interface to shift registers and a variety of processors.

Features
  • Single Supply 3.3V or ±3.3V Operation
  • Software Programmable Features Unipolar/Bipolar Conversions 4 Differential/8 Single-Ended Inputs Variable Data Word Length Power
  • Built-In Sample-and-Hold
  • Direct 4-Wire Interface to Most MPU Serial Ports and all MPU Parallel Ports
  • 25kHz Maximum Throughput Rate
  • Available in 20-Lead PDIP and 20-Lead SW Packages
Typical Application
Applications
  • Minimum Guaranteed Supply Voltage: 2.7V
  • Resolution: 12 Bits
  • Fast Conversion Time: 26µs Max Over Temp
  • Low Supply Currents: 1.0mA
Packaging

Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC1289BCN#PBFN-20C$28.75$22.70
LTC1289BCSW#PBFSW-20C$34.50$27.25
LTC1289BCSW#TRPBFSW-20C$27.35
LTC1289CCN#PBFN-20C$23.00$18.15
LTC1289CCSW#PBFSW-20C$27.60$21.80
LTC1289CCSW#TRPBFSW-20C$21.90
Datasheet
Reliability Data
Related Product
LTC1289 - 3 Volt Single Chip 12-Bit Data Acquisition System
LTC1289 Package Drawing LTC1289
R107 Reliability Data
LTC1289 Footprints and Symbols