Analog Devices Inc. LTC2378HMS-16#PBF

Overview

LTC2378HMS-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 1 Msps successive approximation register (SAR) analog-to-digital converter with ±0.5 LSB INL max, 97 dB SNR at 2 kHz, and fully differential ±V_REF input range (V_REF = 2.5 V to 5.1 V). It operates from a single 2.5 V supply, consumes 13.5 mW at full speed, and supports digital gain compression (DGC) for single-supply amplifier interfacing - used in high-speed medical imaging and industrial data acquisition systems.

For engineers reviewing the LTC2378HMS-16#PBF datasheet, LTC2378HMS-16#PBF pinout, LTC2378HMS-16#PBF application, or LTC2378HMS-16#PBF equivalent, key selection criteria include guaranteed 16-bit no-missing-codes operation over –40°C to +125°C, SPI-compatible serial interface with daisy-chain mode, internal conversion clock, and DGC-enabled 0.5 V to 4.5 V input range with 5 V reference.

Technical Context

The LTC2378HMS-16#PBF implements a charge-redistribution SAR architecture with a 16-bit CDAC and differential comparator, achieving zero-cycle latency and no pipeline delay. Its internal oscillator eliminates external timing dependencies, while auto power-down between conversions scales quiescent current from 6.3 mA at 1 Msps to 0.9 µA in sleep mode.

Digital gain compression (DGC) is controlled via the REF/DGC pin: when grounded, it remaps the ADC's full-scale transfer function to 10–90% of ±V_REF, enabling rail-to-rail single-supply amplifier drive (e.g., LT6350 from +5.5 V) without sacrificing resolution. The device maintains ±0.5 LSB INL and 97 dB SNR across its full –40°C to +125°C operating range.

Key Specifications

Pinout & Package

Package: 16-lead plastic MSOP (5.0 mm × 4.0 mm), exposed pad not present (distinct from DFN variant). Pin 17 does not exist in MSOP; thermal management relies on standard PCB copper pour under body.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed, high-precision SAR ADC applications.

Compared with AD7960BCPZ-RL7 and ADS8860IRGET, the LTC2378HMS-16#PBF uniquely combines H-grade temperature support, integrated DGC for simplified analog front-end design, and guaranteed 16-bit linearity - making it optimal for ruggedized, single-supply, high-SNR systems where thermal robustness and interface simplicity are critical.

Availability

LTC2378HMS-16#PBF is available at Aetrix Electronics and suitable for medical imaging, industrial process control, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC2378HMS-16#PBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.

The LTC2378-16 product line was developed by Linear Technology (acquired by ADI in 2017) to deliver ultra-low-noise, low-power, high-speed SAR ADCs for precision data acquisition in thermally demanding environments - emphasizing guaranteed specifications over –40°C to +125°C and simplified analog interface design.

FAQ

What is the maximum operating temperature specification for the LTC2378HMS-16#PBF?

The LTC2378HMS-16#PBF is rated for continuous operation from –40°C to +125°C (H-grade), with all key specifications - including ±0.5 LSB INL, 97 dB SNR, and 1 Msps throughput - guaranteed across this full range. This distinguishes it from C- and I-grade variants and makes it suitable for under-hood automotive or downhole industrial applications.

How does the digital gain compression (DGC) feature work in the LTC2378HMS-16#PBF?

In the LTC2378HMS-16#PBF, DGC is enabled by grounding the REF/DGC pin (Pin 8), which digitally remaps the ADC's transfer function so that zero-scale corresponds to 0.1×V_REF and full-scale to 0.9×V_REF. With a 5 V reference, this yields an effective input range of 0.5 V to 4.5 V - enabling use of single-supply amplifiers like the LT6350 powered from +5.5 V without negative rails.

Does the LTC2378HMS-16#PBF require an external clock source?

No, the LTC2378HMS-16#PBF contains a fully integrated conversion clock oscillator. External timing components are unnecessary - the device achieves precise 1 Msps sampling solely from its internal timing generator, simplifying layout and eliminating clock jitter concerns associated with external sources.

What package type is used for the LTC2378HMS-16#PBF?

The LTC2378HMS-16#PBF uses a 16-lead plastic MSOP package (5.0 mm × 4.0 mm body, 0.65 mm pitch), distinct from the DFN variant. It has four GND pins (3, 6, 10, 16) for low-impedance return paths but no exposed thermal pad - thermal performance relies on standard PCB copper area under the package body.

Can the LTC2378HMS-16#PBF interface directly with a 1.8 V microcontroller SPI port?

Yes - the LTC2378HMS-16#PBF supports 1.8 V to 5 V logic levels via its independent OVDD supply (Pin 15). When OVDD = 1.8 V, the SDO, SCK, RDL/SDI, BUSY, and CHAIN pins operate at 1.8 V logic thresholds, enabling direct, level-shift-free connection to 1.8 V host processors without external translators.