Analog Devices Inc. LTC2370HMS-16#PBF

Overview

LTC2370HMS-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 2 Msps pseudo-differential unipolar successive approximation register (SAR) ADC operating from a single 2.5 V supply. It delivers 94 dB SNR (typ), ±0.85 LSB INL (max), and guaranteed no missing codes across its 0 V to VREF input range (VREF = 2.5 V to 5.1 V), making it suitable for high-speed medical imaging and portable instrumentation requiring precision at extended temperature.

For engineers reviewing the LTC2370HMS-16#PBF datasheet, LTC2370HMS-16#PBF pinout, LTC2370HMS-16#PBF application, or LTC2370HMS-16#PBF equivalent, key selection considerations include its H-grade (–40°C to 125°C) operation, daisy-chain SPI interface, internal conversion clock, 19 mW power consumption at full throughput, and MSOP-16 package compatibility with space-constrained industrial designs.

Technical Context

The LTC2370HMS-16#PBF implements a charge-redistribution CDAC architecture with pseudo-differential sampling, where IN+ accepts 0 V to VREF while IN– operates as a low-impedance ground sense (±100 mV). Its internal oscillator eliminates external timing dependencies, and acquisition/conversion phases are fully synchronized to the CNV rising edge with zero cycle latency.

It supports flexible digital interfacing via OVDD (1.71 V to 5.25 V), enabling direct connection to 1.8 V, 2.5 V, 3.3 V, or 5 V logic systems. The CHAIN pin enables daisy-chain mode for multi-ADC systems, and BUSY provides precise conversion completion indication without pipeline delay.

Key Specifications

Pinout & Package

Package: 16-lead plastic MSOP (4.0 mm × 3.0 mm × 1.1 mm), exposed pad not present (DFN variant has exposed pad; MSOP does not). Pin 1 is CHAIN; pin numbering follows standard MSOP top-view convention.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS8860IDRCT and AD7960BCPZ-RL7, the LTC2370HMS-16#PBF uniquely balances 2 Msps throughput, 94 dB SNR, integrated timing, and H-grade reliability in a compact MSOP-16-making it optimal for thermally demanding, space-constrained, multi-channel acquisition systems where deterministic latency and low power are design-critical.

Availability

LTC2370HMS-16#PBF is available at Aetrix Electronics and suitable for medical imaging, industrial process control, and portable instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC2370HMS-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 LTC2370HMS-16#PBF belongs to ADI's precision high-speed SAR ADC product line, engineered specifically for applications demanding wide dynamic range, low power, and guaranteed performance from –40°C to +125°C without derating.

FAQ

What is the maximum sampling rate supported by the LTC2370HMS-16#PBF?

The LTC2370HMS-16#PBF supports a maximum sampling rate of 2 Msps, with guaranteed timing performance across its full –40°C to +125°C operating range. At this rate, conversion time is 322 ns max, and the device consumes 19 mW total power. The internal oscillator ensures consistent timing without external clock dependency.

Does the LTC2370HMS-16#PBF require an external reference voltage?

Yes, the LTC2370HMS-16#PBF requires an external reference voltage applied to the REF pins (7 and 8). The reference must be stable, low-noise, and within 2.5 V to 5.1 V. Recommended references include the LTC6655-5 for H-grade compatibility, which provides 2 ppm/°C drift and supports the full temperature range of the LTC2370HMS-16#PBF.

How does the CHAIN pin affect the serial interface behavior of the LTC2370HMS-16#PBF?

When CHAIN (Pin 1) is high, the LTC2370HMS-16#PBF enters daisy-chain mode: RDL/SDI functions as serial data input, allowing cascaded readout of multiple devices using one SCK and SDO line. When CHAIN is low, RDL/SDI acts as a bus-enable input controlling SDO tri-state, supporting standard SPI point-to-point communication.

What is the purpose of the four GND pins on the LTC2370HMS-16#PBF MSOP package?

The four GND pins (3, 6, 10, 16) on the LTC2370HMS-16#PBF provide separate low-inductance return paths for analog input, reference, digital I/O, and core logic. This partitioning minimizes ground bounce, improves PSRR, and maintains 94 dB SNR performance-especially critical in mixed-signal PCB layouts with switching regulators or high-speed digital interfaces.

Can the LTC2370HMS-16#PBF operate with a 1.8 V OVDD supply while using a 2.5 V VDD supply?

Yes, the LTC2370HMS-16#PBF fully supports independent supplies: VDD = 2.5 V (analog core) and OVDD = 1.8 V (digital I/O). Input thresholds scale to 0.8 × OVDD and 0.2 × OVDD, and SDO output swing complies with 1.8 V logic levels. This enables seamless interfacing with ultra-low-voltage FPGAs or microcontrollers without level-shifting circuitry.