LTC1290

PRODUCTION

Single Chip 12-Bit Data Acquisition System

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Overview

  • Software Programmable Features
    • Unipolar/Bipolar Conversion
    • Four Differential/Eight Single-Ended Inputs
    • MSB- or LSB- First Data Sequence
    • Variable Data Word Length
    • Power Shutdown
  • Built-In Sample-and-Hold
  • Single Supply 5V or ±5V Operation
  • Direct Four-Wire Interface to Most MPU Serial Ports and All MPU Parallel Ports
  • 50kHz Maximum Throughput Rate
  • Available in 20-Lead PDIP and SO Wide Packages

The LTC1290 is a data acquisition component which contains a serial I/O successive approximation A/D converter. It uses LTCMOS switched capacitor technology to perform either 12-bit unipolar or 11-bit plus sign bipolar A/D conversions. 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 LTC1290 is idle it can be powered down with a serial word 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.

Applications

  • Resolution: 12 Bits
  • Fast Conversion Time: 13µs Max Over Temp
  • Low Supply Current: 6.0mA

LTC1290
Single Chip 12-Bit Data Acquisition System
12-Bit 8-Channel Sampling Data Acquisition System Product Package 1 Product Package 2
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Documentation

Data Sheet

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Hardware Ecosystem

Parts Product Life Cycle Description
Interface Transceivers & Isolators 1
LTM2883 PRODUCTION SPI/Digital or I2C μModule Isolator with Adjustable ±12.5V and 5V Regulated Power
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