LTC2401IMS#PBF

Overview

The LTC2401IMS#PBF is a 24-bit, single-channel analog-to-digital converter (ADC) in a 10-lead MSOP package. It operates on a single supply voltage from 2.7V to 5.5V with a typical supply current of 200µA during conversion and 20µA in sleep mode. The device features a delta-sigma architecture with an integrated oscillator, eliminating the need for external frequency-setting components. Key electrical specifications include 4ppm integral nonlinearity (INL), 0.6ppm RMS noise, and greater than 110dB rejection at 50Hz or 60Hz. It supports an extended input range of –12.5% VREF to 112.5% VREF and communicates via a 2- or 3-wire digital interface compatible with SPI and MICROWIRE protocols.

Feature Summary

• 24-bit resolution with no missing codes and 4ppm INL
• No latency digital filter architecture settles in a single cycle
• Integrated internal oscillator with >110dB rejection at 50Hz/60Hz
• Extended input range accommodating ±12.5% overrange and underrange

Applications

• Weight scales
• Direct temperature measurement
• Gas analyzers
• Strain gauge transducers
• Industrial process control

Procurement Notes

Verify the specific suffix #PBF indicates lead-free and RoHS compliance status according to Analog Devices documentation. Confirm the IMS variant corresponds to the industrial temperature range of –40°C to +85°C. Check for any product change notifications (PCN) that may affect pinout or material composition. Ensure the ordering part number matches the single-channel LTC2401 configuration rather than the dual-channel LTC2402.

Selection Notes

Select the LTC2401 when only a single analog input channel is required; use the LTC2402 for two-channel applications. Choose this component if system design requires a single-cycle settling time to simplify multiplexing without latency penalties. Verify that the application can accommodate the 32-bit data output format, which includes status bits and sub-LSBs beyond the primary 24-bit result. Ensure the reference voltage range between FSSET and ZSSET falls within the 0.1V to VCC limits.

Part Context

This component belongs to the LTC2401/LTC2402 family of mPower No Latency DS ADCs. These devices utilize a unique digital filter architecture that provides immediate data availability upon conversion completion. The IMS8 package designation refers to the 10-lead plastic MSOP form factor, distinguishing it from larger packages while maintaining high precision performance in a compact footprint suitable for dense PCB layouts.

Replacement Considerations

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