LTC1293DCSW#PBF

ADCs/DACs - Special Purpose Overview

The LTC1293DCSW#PBF is a single-chip 12-bit data acquisition system manufactured by Analog Devices Inc. It integrates a successive approximation analog-to-digital converter (ADC), an analog multiplexer, and a sample-and-hold circuit using LTCMOS switched capacitor technology. The device supports up to six single-ended or differential input channels and operates on a single +5V supply or dual ±5V supplies. It features a synchronous half-duplex serial interface compatible with most microprocessor ports, allowing configuration via software for unipolar/bipolar conversion and power shutdown modes. Key electrical specifications include a maximum throughput rate of 46.5 kS/s, a typical positive supply current of 6.0 mA, and a maximum conversion time of 12 µs over the operating temperature range.

ADCs/DACs - Special Purpose Feature Summary

• Integrated 12-bit SAR ADC with 6-channel analog multiplexer and built-in sample-and-hold
• Software-programmable unipolar/bipolar conversion and differential/single-ended input configurations
• Direct 4-wire serial interface (CS, CLK, DIN, DOUT) compatible with standard MPU ports
• Low power consumption with programmable power shutdown mode reducing supply current significantly

ADCs/DACs - Special Purpose Applications

• Industrial process control systems requiring multi-channel data acquisition
• Battery-powered instrumentation utilizing low supply current and power shutdown features
• Strain gauge bridge measurements and sensor signal conditioning interfaces
• Microprocessor-based data logging systems with serial communication requirements

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix DC indicates the commercial temperature grade (0°C to 70°C) and SW denotes the 16-lead SOIC Wide package. Confirm that the #PBF designation ensures lead-free compliance and RoHS adherence as per manufacturer standards. Cross-reference the pinout for the 6-channel LTC1293 variant against the 8-channel LTC1294 if pin compatibility is required for board layout adjustments.

ADCs/DACs - Special Purpose Selection Notes

Select this component when a 12-bit resolution and 46.5 kS/s sampling rate are sufficient for the application. Ensure the input voltage range aligns with the reference voltage settings, noting that unipolar mode spans 0 to VREF while bipolar mode spans -VREF to +VREF. Consider the LTC1294 if eight input channels are needed, or the LTC1296 if a System Shutdown Output (SSO) pin is required to control external circuitry during power-down states.

ADCs/DACs - Special Purpose Part Context

The LTC1293 belongs to the LTC1293/4/6 family of single-chip data acquisition systems from Analog Devices. While the LTC1293 provides six channels, the LTC1294 offers eight channels, and the LTC1296 adds a System Shutdown Output pin. All variants share identical core ADC performance, serial interface protocols, and power management features, differing primarily in channel count and specific output pins.

ADCs/DACs - Special Purpose Replacement Considerations

Public confirmed substitute part numbers: LTC1293CCSW#PBF, LTC1293BCSW#PBF.