LTC1094 - 1, 2, 6 and 8 Channel, 10-Bit Serial I/O Data Acquisition Systems

The high impedance analog inputs and the ability to operate with reduced spans (below 1V full scale) allow direct connection to sensors and transducers in many applications, eliminating the need for gain stages. An efficient serial port communicates without external hardware to most MPU serial ports and all MPU parallel I/O ports allowing eight channels of data to be transmitted over as few as three wires. This, coupled with low power consumption, makes remote location possible and facilitates transmitting data through isolation barriers. Temperature drift of offset, linearity and full-scale error are all extremely low (1ppm/°C typically) allowing all grades to be specified with offset and linearity errors of ±0.5LSB maximum over temperature. In addition, the A grade devices are specified with full-scale error and total unadjusted error (including the effects of offset, linearity and full-scale errors) of ±1LSB maximum over temperature. The lower grade has a full-scale specification of ±2LSB for applications where full scale is adjustable or less critical.

Features
  • Programmable Features– Unipolar/Bipolar Conversions– Differential/Single-Ended Multiplexer Configurations
  • Sample-and-Holds
  • Single Supply 5V, 10V or ±5V Operation
  • Direct 3- or 4-Wire Interface to Most MPU Serial Ports and All MPU Parallel I/O Ports
  • Analog Inputs Common Mode to Supply Rails
  • Resolution: 10 Bits
  • Total Unadjusted Error (A Grade): ±1LSB Over Temp
  • Fast Conversion Time: 20µs
  • Low Supply CurrentLTC1091: 3.5mA Max, 1.5mA TypLTC1092/LTC1093/LTC1094: 2.5mA Max, 1mA Typ
Typical Application

Packaging



Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC1094ACN#PBFN-20C$17.15$14.95
LTC1094CN#PBFN-20C$11.65$9.45
Datasheet
Application Note
Design Note
Reliability Data
Related Product
LTC1091 - 1, 2, 6 and 8 Channel, 10-Bit Serial I/O Data Acquisition Systems
LTC1094 Package Drawing LTC1094
LTC1094 Package Drawing LTC1094
LTC1094 Package Drawing LTC1094
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DN29 - A Single Supply RS232 Interface for Bipolar A to D Converters
R061 Reliability Data
LTC1094 Footprints and Symbols