Analog Devices Inc. LTC2367IMS-16#PBF

Overview

LTC2367IMS-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit pseudo-differential unipolar successive approximation register (SAR) ADC operating from a single 2.5V supply, delivering 500ksps throughput with 94.7dB typical SNR, ±0.75LSB max INL, and guaranteed no missing codes - deployed in high-speed data acquisition systems requiring low power and high DC/AC accuracy.

For engineers reviewing the LTC2367IMS-16#PBF datasheet, LTC2367IMS-16#PBF pinout, LTC2367IMS-16#PBF application, or LTC2367IMS-16#PBF equivalent, key selection criteria include its 2.5V–5.1V programmable reference range, SPI-compatible daisy-chain interface, internal conversion clock, –40°C to +85°C industrial temperature grade, and MSOP-16 package compatibility with compact instrumentation layouts.

Technical Context

The LTC2367IMS-16#PBF implements a charge-redistribution SAR architecture with a 16-bit CDAC and differential comparator, sampling pseudo-differential inputs (IN+, IN–) over 0V to VREF with ±100mV common-mode tolerance on IN–. It uses an internal oscillator for fixed 1.5µs conversion time and auto power-down between conversions.

Its SPI-compatible serial interface supports 1.8V–5V OVDD logic levels, offers RDL/SDI dual-function pin for normal/bus-enable or daisy-chain SDI mode via CHAIN pin control, and delivers straight-binary 16-bit output with no pipeline delay or cycle latency - enabling deterministic real-time sampling in closed-loop control and burst-mode acquisition.

Key Specifications

Pinout & Package

Package: 16-lead plastic MSOP (4.0mm × 3.0mm), exposed pad not present (DFN variant has exposed pad; MSOP does not). Pin pitch: 0.5mm. RoHS-compliant lead-free finish (#PBF).

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, the LTC2367IMS-16#PBF provides optimal balance of 94.7dB SNR, ±0.75LSB INL, 6.8mW power, and MSOP-16 size - making it the preferred choice for industrial and portable systems prioritizing precision, efficiency, and compact integration.

Availability

LTC2367IMS-16#PBF is available at Aetrix Electronics and suitable for medical imaging signal chains, industrial process monitoring systems, and portable test equipment requiring stable component supply with guaranteed long-term manufacturability.

Supply support for LTC2367IMS-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 semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LTC2367IMS-16#PBF belongs to ADI's precision SAR ADC product line, designed specifically for applications demanding high DC accuracy, low power, and deterministic timing - including portable instrumentation and harsh-environment data acquisition.

FAQ

What is the maximum reference voltage supported by the LTC2367IMS-16#PBF?

The LTC2367IMS-16#PBF supports an external reference voltage from 2.5V to 5.1V. Operation above 5.1V violates absolute maximum ratings and may cause permanent damage. At 5.1V reference, the LSB size is 78µV, and SNR remains within specification (94.7dB typical at 2kHz input). The REF pin draws up to 0.32mA at 500ksps, so the reference source must sustain this current without excessive droop or noise.

Does the LTC2367IMS-16#PBF require external clocking for conversion timing?

No, the LTC2367IMS-16#PBF does not require an external clock for conversion timing. It integrates an internal oscillator that fixes the conversion time at 1.5µs (typical), eliminating external clock generation and associated jitter. The CNV pin serves only as a synchronous trigger - rising edge initiates acquisition, and BUSY goes high immediately thereafter. This simplifies timing-critical designs and improves SNR consistency.

Can the LTC2367IMS-16#PBF operate with a 1.8V OVDD supply while using a 2.5V VDD supply?

Yes, the LTC2367IMS-16#PBF fully supports mixed-supply operation: VDD = 2.5V (analog core) and OVDD = 1.8V (digital I/O). All serial interface pins (SCK, SDO, RDL/SDI, CHAIN, BUSY, CNV) are referenced to OVDD, with VIH = 0.8×OVDD and VIL = 0.2×OVDD. This allows direct interfacing with 1.8V FPGAs or microcontrollers without level shifters, while maintaining full 16-bit analog performance.

What is the purpose of the IN– pin on the LTC2367IMS-16#PBF, and how should it be connected?

The IN– pin on the LTC2367IMS-16#PBF serves as the pseudo-differential common-mode reference point, with an absolute input range of ±100mV relative to GND. It must be connected directly to the system ground plane or to a remote ground sense point - not left floating or tied to a voltage divider. This configuration enables common-mode noise rejection while preserving the full 0V to VREF unipolar range on IN+, and is critical for achieving specified CMRR (80dB at 250kHz) and THD performance.

Is the LTC2367IMS-16#PBF pin-compatible with other variants in the LTC2367 family?

Yes, the LTC2367IMS-16#PBF is pin-compatible with all MSOP-16 variants in the LTC2367-16 family, including LTC2367CMS-16#PBF (0°C to 70°C) and LTC2367HMS-16#PBF (–40°C to 125°C). All share identical pinout, electrical characteristics, and functional behavior - differing only in temperature grade and screening. This allows drop-in replacement across industrial and extended-temperature designs without PCB revision.