LTC1197LIMS8#PBF

Analog To Digital Converters (ADC) Overview

The LTC1197LIMS8#PBF is a 10-bit, 250ksps successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices. It operates on a single 2.7V to 4V supply and features a differential analog input with an adjustable external reference pin. The device utilizes a 3-wire serial interface compatible with SPI and Microwire protocols. Key electrical parameters include a maximum sampling frequency of 250kHz at 2.7V, typical power dissipation of 2.2mW during full-speed operation, and an offset error of -2 LSB. It is housed in an 8-lead MSOP package.

Analog To Digital Converters (ADC) Feature Summary

• 10-Bit Resolution with 250ksps Sampling Rate
• Single 2.7V Supply Operation with Auto Shutdown
• Differential Analog Input with Adjustable Reference
• SPI and Microwire Compatible 3-Wire Serial I/O

Analog To Digital Converters (ADC) Applications

• High Speed Data Acquisition Systems
• Portable or Compact Instrumentation
• Low Power or Battery-Operated Instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm package type and temperature range. Ensure compatibility with system voltage levels, as this component requires a 2.7V to 4V supply. Confirm that the digital interface logic thresholds align with the host microcontroller's output levels at the operating supply voltage.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC1197L variant for applications requiring a 2.7V supply; standard LTC1197 parts require 4V to 9V. Choose this model over the LTC1199L if a differential input and external reference are required, rather than the multiplexed single-ended inputs found in the LTC1199 series. Consider the auto-shutdown feature for battery-powered designs to minimize quiescent current between conversions.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC1197 family of 10-bit, high-speed SAR ADCs. It serves as a low-power upgrade to older 8-bit devices like the LTC1196/LTC1198. The 'IMS8' designation indicates the industrial temperature range (-45°C to 85°C) and the 8-lead MSOP package format.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers: None.