LTC1294DCSW#PBF

ADCs/DACs - Special Purpose Overview

The LTC1294DCSW#PBF is a single-chip 12-bit data acquisition system manufactured by Analog Devices Inc. It integrates an 8-channel analog multiplexer, sample-and-hold circuit, and successive approximation A/D converter. The device supports unipolar or bipolar conversions with a maximum throughput rate of 46.5 kS/s. It operates on a single +5V supply or ±5V supplies, drawing 6.0 mA during active conversion and 50 µA in power shutdown mode. The component utilizes a synchronous half-duplex serial interface compatible with most microprocessor ports.

ADCs/DACs - Special Purpose Feature Summary

• Integrated 8-channel analog multiplexer with built-in sample-and-hold for all single-ended inputs
• Software-programmable unipolar/bipolar conversion modes and differential/single-ended input configurations
• Direct 4-wire serial interface to MPU ports with MSB-first or LSB-first data output options
• Power shutdown capability reducing supply current to 50 µA when CS remains low after configuration

ADCs/DACs - Special Purpose Applications

• Industrial process control systems requiring multi-channel signal acquisition
• Data logging equipment with low-power standby requirements
• Battery-powered instrumentation utilizing single-supply operation
• Strain gauge bridge measurements with signal conditioning

ADCs/DACs - Special Purpose Procurement Notes

Verify the ordering suffix #PBF indicates lead-free and RoHS compliance status per manufacturer specifications. Confirm the DC suffix corresponds to the commercial temperature range of 0°C to 70°C. Ensure the SOIC-20 wide package dimensions match the target PCB footprint constraints before finalizing procurement orders.

ADCs/DACs - Special Purpose Selection Notes

Select this model for applications requiring eight analog input channels within a compact surface-mount package. Choose the DC variant for standard commercial operating temperatures. Consider the LTC1293 if only six channels are needed or the LTC1296 if a System Shutdown Output pin is required for external circuitry control. Verify that the serial interface timing meets the microprocessor clock speed requirements.

ADCs/DACs - Special Purpose Part Context

This component belongs to the LTC1293/4/6 family of 12-bit data acquisition systems. The LTC1294 specifically provides eight input channels, distinguishing it from the six-channel LTC1293 and the eight-channel LTC1296 which includes a System Shutdown Output. All variants share identical core ADC performance and serial interface protocols.

ADCs/DACs - Special Purpose Replacement Considerations

LTC1294CCSW#PBF offers the same functionality in the commercial temperature grade. LTC1294BCSW#PBF provides extended temperature capabilities. Direct pin-compatible substitutes include other members of the LTC129x family, though channel count and specific features like SSO must be verified.