LTC2378IDE-16#PBF

Analog To Digital Converters (ADC) Overview

The LTC2378IDE-16#PBF is a 16-bit, 1Msps successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. Operating from a single 2.5V supply, it features a fully differential input range of ±VREF with VREF spanning 2.5V to 5.1V. The device achieves a typical signal-to-noise ratio (SNR) of 97dB and total harmonic distortion (THD) of –122dB at an input frequency of 2kHz. It dissipates 13.5mW at maximum sampling rate and includes digital gain compression functionality. The component is housed in a 16-lead plastic DFN package (4mm × 3mm) and supports an operating temperature range of –40°C to 85°C.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution with guaranteed no missing codes and ±0.5LSB maximum integral nonlinearity (INL).
• High-speed 1Msps throughput with no pipeline delay or cycle latency.
• Low power consumption: 13.5mW at 1Msps and 13.5µW in power-down mode.
• Digital Gain Compression (DGC) function eliminates the need for negative driver amplifier supplies.

Analog To Digital Converters (ADC) Applications

• Medical imaging systems
• High speed data acquisition
• Portable or compact instrumentation
• Industrial process control
• Automated test equipment (ATE)

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free finish and tube packaging. Confirm the IDE suffix corresponds to the industrial temperature grade (-40°C to 85°C) and DFN package type. Ensure compatibility with the required VREF range and logic voltage levels before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this model for applications requiring high accuracy and low power in a small footprint. The DFN package is suitable for space-constrained designs. Ensure the host interface supports SPI-compatible serial I/O with daisy-chain capability if multiple devices are used. Verify that the external reference voltage falls within the 2.5V to 5.1V range.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2378-16 family of low-power SAR ADCs. The IDE variant specifically denotes the industrial temperature range and the 16-lead DFN package format. Other variants in the series include commercial (CDE) and extended industrial (HMS) grades with different package options.

Analog To Digital Converters (ADC) Replacement Considerations

Direct replacements within the same family include LTC2378CDE-16#PBF for commercial temperature ranges or LTC2378HMS-16#PBF for extended industrial temperatures in MSOP packages. Cross-package substitution requires verifying pinout compatibility between DFN and MSOP formats.

Analog To Digital Converters (ADC) FAQ

What is the purpose of the Digital Gain Compression (DGC) feature?

DGC maps the zero-scale code from 0V to 0.1 • VREF and full-scale from VREF to 0.9 • VREF. This allows driving amplifiers to operate from a single positive supply while preserving the ADC's full resolution.

How does the device handle power consumption during idle periods?

The LTC2378-16 automatically powers down between conversions. Power dissipation scales with the sampling rate, dropping to 13.5µW when the sample rate is reduced to 1ksps.

What is the maximum sampling frequency supported by this ADC?

The device supports a maximum sampling frequency of 1Msps with no cycle latency, ensuring fast throughput for high-speed applications.