LTC2495CUHF#PBF

Analog To Digital Converters (ADC) Overview

The LTC2495CUHF#PBF is a 16-channel (eight differential), 16-bit No Latency Delta-Sigma ADC with Easy Drive technology and an I2C interface. It features programmable gain from 1 to 256, an integrated high-accuracy temperature sensor, and an internal oscillator. The device operates on a single supply voltage ranging from 2.7V to 5.5V. Key electrical specifications include 0.6µV RMS noise, 2ppm INL, and 1ppm offset error in normal speed mode. The component is housed in a 38-lead 5mm × 7mm QFN package and supports industrial operating temperatures from 0°C to 70°C.

Analog To Digital Converters (ADC) Feature Summary

• Easy Drive Technology: Eliminates dynamic input current errors, enabling direct digitization of high impedance sensors with rail-to-rail inputs.
• No Latency Architecture: Digital filter settles in a single cycle, ensuring valid data immediately after channel selection.
• Integrated Temperature Sensor: Provides 1/2°C resolution and 2°C absolute accuracy for built-in thermal monitoring.
• Programmable Gain Amplifier: Offers gain settings from 1 to 256 in eight steps to accommodate various signal amplitudes.

Analog To Digital Converters (ADC) Applications

• Data Acquisition Systems requiring temperature compensation
• Direct Sensor Digitizers for high impedance sources
• Industrial Process Control instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'CUHF' corresponds to the commercial temperature grade (0°C to 70°C) rather than the industrial grade ('IUHF', -40°C to 85°C). Confirm the '#PBF' designation indicates lead-free packaging compliant with RoHS standards. Ensure the required quantity matches the standard tube packaging format associated with this part number variant.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC2495CUHF#PBF when applications require low power consumption and simplified interfacing via the 2-wire I2C bus. The choice between normal and 2x speed modes should be based on the trade-off between output data rate and power dissipation. Verify that the external reference voltage range aligns with the 2.7V to 5.5V supply capability for optimal performance.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC2495 family of precision analog-to-digital converters. It shares architectural similarities with other models in the series but is distinguished by its specific pinout, package type, and temperature rating. The CUHF suffix identifies the commercial grade version packaged in a 38-lead QFN, differentiating it from higher temperature variants or alternative package options within the same product line.

Analog To Digital Converters (ADC) Replacement Considerations

The LTC2495IUHF#PBF serves as a direct functional substitute with an extended operating temperature range of -40°C to 85°C. Both parts share identical electrical characteristics and pin configurations, allowing for drop-in replacement if environmental conditions exceed the commercial grade limits.