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Analog Devices LTC2378CDE-20#PBF — Discrete Semiconductors

LTC2378CDE-20#PBF ADC 20-Bit SAR 1 MSPS, 16-DFN

MPNLTC2378CDE-20#PBF
End of Life

Linear Technology LTC2378CDE-20#PBF, 20-bit SAR ADC, 1 MSPS sampling, differential input, SPI interface, 16-WFDFN exposed pad, 0°C to 70°C.

$57.99Ref. price · indicative, final on quote
Packaging16-WFDFN Exposed Pad
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LTC2378CDE-20#PBF specifications
ParameterValue
Input typeDifferential
MountingSurface Mount
Reference typeExternal
Voltage - supply, analog2.375V ~ 2.625V
Voltage - supply, digital2.375V ~ 2.625V
I/O channels1
InterfaceSPI
Operating temperature0°C ~ 70°C
PackageTube
ArchitectureSAR
ConfigurationS/H-ADC
Number of bits20
Case16-WFDFN Exposed Pad
Ratio - s (H:ADC)1:1
Number of a (D converters)1
Sampling rate (Per second)1M

Product details

The LTC2378CDE-20#PBF from Linear Technology is a 20-bit successive-approximation-register (SAR) ADC that samples a single differential input at 1 MSPS. That combination — 20-bit resolution at a megasample per second — puts it in a narrow performance band: you get the dynamic range of a precision converter without giving up the throughput needed for fast-scanning data-acquisition systems, vibration analysis, or high-speed closed-loop control. The SPI interface keeps the digital side simple, and the external reference gives you control over the full-scale range and noise floor.

Supply and interface — what to budget on the board

The SPI interface operates at the same digital supply level.

For a 20-bit, 1 MSPS ADC, that is a useful assurance: precision converters in this speed class often get superseded, but this one is still a supported catalog line.

Frequently asked questions

What is the equivalent or replacement for LTC2378CDE-20#PBF?

There is no direct pin-compatible second source. The AD7982BRMZRL7 is an 18-bit, 1 MSPS differential SAR ADC from the same functional class, but it is two bits lower in resolution and has a different pinout and reference scheme. For a 20-bit, 1 MSPS differential SAR ADC, the LTC2378CDE-20#PBF is the primary choice.

Can LTC2378CDE-20#PBF be used with a 3.3V SPI interface?

The digital supply range is 2.375 V to 2.625 V, so a 3.3 V SPI host requires level translation on the SPI lines. The ADC itself cannot tolerate 3.3 V on its digital I/O pins.

What is LTC2378CDE-20#PBF's listed package?

The LTC2378CDE-20#PBF is supplied in a 16-WFDFN exposed pad package (16-DFN, 4x3 mm) and ships in Tube packaging.

What is LTC2378CDE-20#PBF's listed input type?

The input type is differential — the ADC expects a differential signal at its input pins, which rejects common-mode noise and improves effective resolution in noisy environments.