LTC1298CS8#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC1298CS8#TRPBF is a micropower, 12-bit successive approximation sampling analog-to-digital converter (ADC) housed in an 8-lead plastic SOIC package. It features a software-selectable two-channel multiplexer and operates on a single 4.5V to 5.5V supply. The device typically draws 350µA during conversion at 11.1ksps and powers down to 1nA when inactive. It includes an on-chip sample-and-hold and communicates via a synchronous serial interface compatible with SPI and Microwire standards.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with guaranteed ±3/4 LSB maximum differential nonlinearity (DNL)
• Two-channel input multiplexer for single-ended or differential measurements
• Micropower consumption: 350µA typical active current, 1nA typical shutdown current
• Integrated sample-and-hold circuit with 60µs conversion time

Analog To Digital Converters (ADC) Applications

• Battery-operated systems
• Remote data acquisition
• Battery monitoring
• Handheld terminal interface
• Temperature measurement
• Isolated data acquisition

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm that the operating voltage range is strictly limited to 4.5V–5.5V, as higher voltages apply only to the LTC1286 variant. Ensure the CS/SHDN pin is driven rail-to-rail to achieve the specified nanowatt shutdown current levels.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC1298 over the LTC1286 when a two-channel multiplexer is required, noting the restricted 5.5V maximum supply voltage compared to the LTC1286's 9V capability. This part is suitable for applications requiring direct sensor connection without gain stages due to its high impedance inputs and reduced span operation capabilities down to 1.5V full scale.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC1286/LTC1298 family of micropower sampling ADCs. While sharing the same 12-bit SAR architecture and S0-8 packaging, the LTC1298 distinguishes itself by integrating a 2-channel MUX and tying the reference input to the supply pin, whereas the LTC1286 offers a differential input and external reference pin with a wider supply range.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.