LTC2488CDE#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC2488CDE#TRPBF is a 16-bit, 4-channel (2 differential) delta-sigma ADC featuring Easy Drive technology for automatic differential input current cancellation. It operates on a single supply from 2.7V to 5.5V with a typical power consumption of 0.8mW. The device provides 600nV RMS output noise and simultaneous 50Hz/60Hz line frequency rejection. Key electrical specifications include 2ppm INL, 1ppm offset error, and 15ppm full-scale error. It utilizes an internal oscillator or external clock source and communicates via a 4-wire SPI interface.

Analog To Digital Converters (ADC) Feature Summary

• Easy Drive Technology: Eliminates dynamic input current errors, allowing direct connection to high-impedance sensors without buffering.
• No Latency Architecture: Digital filter settles in a single cycle, ensuring the first conversion after channel selection is valid.
• Simultaneous Line Rejection: Automatically rejects 50Hz and 60Hz frequencies using an internal 307.2kHz oscillator.
• Rail-to-Rail Input: Supports common mode input ranges from GND to VCC, independent of the reference voltage.

Analog To Digital Converters (ADC) Applications

• Data Acquisition Systems requiring up to 2 differential or 4 single-ended inputs
• Direct sensor digitization for high-impedance sources
• Direct temperature measurement applications
• Industrial process control instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify that the #TRPBF suffix indicates Tape and Reel packaging, distinct from the #PBF tube variant. Confirm the 'C' grade designation corresponds to the commercial operating temperature range of 0°C to 70°C. Ensure the order quantity aligns with standard reel sizes provided by the manufacturer.

Analog To Digital Converters (ADC) Selection Notes

Select this component when low noise (600nV RMS) and high DC accuracy (2ppm INL) are required for multi-channel sensing. Choose the TRPBF version over PBF if automated surface-mount assembly is planned. Ensure the application supports the 2.7V to 5.5V supply range and utilizes an external differential reference voltage between 0.1V and VCC.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2488 family of precision delta-sigma converters. The CDE suffix denotes the DE package (14-lead 4mm x 3mm Plastic DFN). The 'C' indicates the commercial temperature grade, while 'I' variants cover extended industrial ranges (-40°C to 85°C). All variants share identical electrical performance characteristics.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Direct replacements within the same package and pinout configuration should be verified against specific electrical parameter requirements such as input current cancellation and noise specifications.