RT2378IMS-20

Analog To Digital Converters (ADC) Overview

The RT2378IMS-20 is a radiation-tolerant, 20-bit successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It operates from a single 2.5V supply and supports fully differential inputs with a reference voltage range of 2.5V to 5.1V. The device achieves a throughput rate of 1Msps with no pipeline delay or cycle latency. Key electrical specifications include a maximum integral nonlinearity of ±2ppm, guaranteed 20-bit no missing codes, and a typical signal-to-noise ratio of 104dB at a 2kHz input frequency. Power consumption is 21mW at the maximum sampling rate and drops to 25µW in power-down mode. The component utilizes an SPI-compatible serial interface supporting logic voltages from 1.8V to 5V.

Analog To Digital Converters (ADC) Feature Summary

• Radiation tolerance meeting MIL-STD-883 standards for total ionizing dose and single event latch-up.
• Digital gain compression function eliminates the need for negative driver amplifier supplies.
• Internal conversion clock simplifies external timing requirements.
• Daisy-chain mode support for multi-device cascading.

Analog To Digital Converters (ADC) Applications

• High-speed data acquisition systems requiring radiation hardness.
• Precision instrumentation operating in harsh environments.
• Medical imaging equipment utilizing SAR ADC architectures.
• Industrial control systems demanding high linearity and low noise.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging when sourcing components. Confirm that the IMS variant corresponds to the industrial temperature range of –40°C to 85°C. Ensure procurement channels provide documentation verifying compliance with MIL-PRF-38535 Class N processing guidelines. Cross-reference part markings against official datasheets to authenticate authenticity prior to integration.

Analog To Digital Converters (ADC) Selection Notes

Select the RT2378IMS-20 when system requirements demand 20-bit resolution combined with 1Msps throughput and radiation hardness. Consider this component if the application requires a single 2.5V supply and compatibility with standard SPI interfaces. Evaluate the digital gain compression feature if the driving amplifier cannot support a negative rail. Verify that the 16-lead MSOP package dimensions fit the available PCB real estate constraints.

Analog To Digital Converters (ADC) Part Context

The RT2378-20 belongs to a family of high-performance SAR ADCs designed for precision applications. Unlike standard commercial variants, this specific model incorporates radiation hardening processes compliant with military specifications. It serves as a specialized solution for aerospace and defense sectors where reliability under ionizing radiation is critical. The device maintains performance metrics comparable to non-radiation-hardened counterparts while ensuring operational stability in space or nuclear environments.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not identified in the provided documentation. Consult Analog Devices technical support for qualified alternatives that meet identical radiation tolerance and pinout requirements. Direct replacements must maintain the 16-lead MSOP footprint and 20-bit resolution specifications.

Analog To Digital Converters (ADC) FAQ

What is the maximum total ionizing dose tolerance for the RT2378-20?

The device is rated for 10kRad (Si) Total Ionizing Dose per MIL-STD-883 TM1019 Condition A.

How does the Digital Gain Compression (DGC) function affect the input range?

When enabled, DGC maps zero-scale code from 0V to 0.1 • VREF and full-scale code from VREF to 0.9 • VREF, allowing operation with a single positive supply for the driver amplifier.

Does the RT2378-20 have any pipeline delay or cycle latency?

No, the RT2378-20 features no pipeline delay and no cycle latency, providing immediate data availability after conversion.