LTC1865LIMS#PBF

Analog To Digital Converters (ADC) Overview

The LTC1865LIMS#PBF is a 16-bit, 150ksps successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices. Operating on a single 3V supply, it consumes 450µA at maximum sampling rates and drops to 10µA in auto-shutdown mode. The device features a software-selectable 2-channel multiplexer for differential or single-ended inputs and an external reference pin. It utilizes a 3-wire SPI/MICROWIRE compatible serial interface and is housed in an 8-lead MSOP package.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution with 150ksps sampling rate
• Single 3V supply operation with 450µA typical current consumption
• Software-selectable 2-channel multiplexer for flexible input configuration
• Auto-shutdown capability reduces current to 10µA at 1ksps

Analog To Digital Converters (ADC) Applications

• High speed data acquisition systems
• Portable or compact instrumentation
• Low power battery-operated instrumentation
• Isolated and/or remote data acquisition

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing. Confirm the IMS8 marking corresponds to the industrial temperature range variant (-40°C to 85°C). Ensure the MSOP-8 package dimensions match the target PCB footprint requirements before finalizing procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component over the standard LTC1865 if a 3V supply rail is required instead of 5V. Choose the LIMS suffix for industrial temperature applications (-40°C to 85°C) rather than commercial ranges. Ensure the system requires an external reference voltage, as the MSOP version does not have an internal reference tied to VCC.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC1864L/LTC1865L family of µPower ADCs. It serves as a 16-bit upgrade path for older 12-bit devices like the LTC1285/LTC1288. It is pin-compatible with the 12-bit LTC1860L/LTC1861L series, facilitating direct replacements in existing designs requiring higher resolution.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible replacements include the LTC1860L and LTC1861L for 12-bit applications. For 5V supply variants, consider the LTC1864/LTC1865 non-L series parts, though supply voltage differences must be accounted for.