LTC1294BCSW#PBF

ADCs/DACs - Special Purpose Overview

The LTC1294BCSW#PBF is a single-chip 12-bit data acquisition system manufactured by Analog Devices Inc. It integrates a successive approximation A/D converter, an analog multiplexer, and a built-in sample-and-hold circuit using LTCMOS switched capacitor technology. The device supports eight single-ended or differential input channels and operates on a single +5V supply or ±5V supplies. It features a synchronous half-duplex serial interface compatible with most microprocessor ports, allowing direct connection without external hardware. Key specifications include a maximum throughput rate of 46.5kHz, a conversion time of 12µs, and a typical supply current of 6.0mA.

ADCs/DACs - Special Purpose Feature Summary

• Integrated 12-bit SAR ADC with 8-channel analog multiplexer and built-in sample-and-hold
• Software programmable for unipolar/bipolar conversion, differential/single-ended inputs, and MSB/LSB data sequence
• Direct 4-wire serial interface to MPU serial or parallel ports
• Power shutdown capability reduces supply current to 50µA

ADCs/DACs - Special Purpose Applications

• Industrial process control systems requiring multi-channel data acquisition
• Battery-powered instrumentation utilizing power shutdown modes
• Strain gauge bridge measurements with signal conditioning
• Microprocessor-based data logging systems

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix #PBF indicates lead-free packaging compliant with RoHS standards. Confirm the BC grade corresponds to the commercial temperature range of 0°C to 70°C. Ensure the 20-lead SOIC-W package dimensions match the target PCB footprint. Cross-reference the manufacturer part number with authorized distributors to confirm authenticity and traceability.

ADCs/DACs - Special Purpose Selection Notes

Select the LTC1294BCSW#PBF when eight input channels are required, distinguishing it from the 6-channel LTC1293 and the SSO-equipped LTC1296. Choose this component if the application demands a software-configurable serial interface over parallel connections. Verify that the 46.5kHz throughput and 12-bit resolution meet the system accuracy and speed requirements. Consider the 6.0mA active current consumption against available power budgets.

ADCs/DACs - Special Purpose Part Context

This component belongs to the LTC1293/LTC1294/LTC1296 family of single-chip 12-bit data acquisition systems. The LTC1294 variant specifically provides eight analog input channels, whereas the LTC1293 offers six and the LTC1296 adds a System Shutdown Output pin. All variants share identical core ADC architecture, serial interface protocols, and pinout configurations for the primary I/O functions.

ADCs/DACs - Special Purpose Replacement Considerations

Publicly confirmed substitutes within the same datasheet include the LTC1293CCSW#PBF (6-channel) and LTC1296CCSW#PBF (with SSO). These parts share functional compatibility but differ in channel count or additional output pins. Verify pinout alignment and software configuration word compatibility before substitution.