Analog Devices Inc. LTC2368IMS-16#TRPBF

Overview

LTC2368IMS-16#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit, 1 Msps pseudo-differential unipolar successive approximation register (SAR) ADC operating from a single 2.5V supply. It delivers ±0.75 LSB INL (max), guaranteed no missing codes at 16 bits, and 94.7 dB SNR (typ) at 2 kHz input with 5 V reference - enabling high-fidelity data acquisition in compact, low-power systems such as portable instrumentation and industrial process control.

For engineers reviewing the LTC2368IMS-16#TRPBF datasheet, LTC2368IMS-16#TRPBF pinout, LTC2368IMS-16#TRPBF application, or LTC2368IMS-16#TRPBF equivalent, key selection considerations include its 16-lead MSOP package, –40°C to +85°C industrial temperature grade, SPI-compatible serial interface with daisy-chain mode, and internal conversion clock eliminating external timing constraints.

Technical Context

The LTC2368IMS-16#TRPBF implements a charge-redistribution SAR architecture with a 16-bit CDAC and differential comparator, sampling pseudo-differential inputs (IN+, IN–) over 0 V to VREF with VREF programmable from 2.5 V to 5.1 V. Its acquisition phase draws ~45 pF capacitive load per analog input, while conversion uses an internal oscillator to fix tCONV at 460–527 ns - ensuring zero cycle latency and deterministic timing.

It supports dual-supply operation: 2.375–2.625 V on VDD for core logic and 1.71–5.25 V on OVDD for I/O compatibility across 1.8 V, 2.5 V, 3.3 V, and 5 V host systems. Power-down mode reduces current to 0.9 µA (typ), scaling dynamically with sampling rate - delivering 13.5 mW at 1 Msps and only 13.5 µW at 1 ksps.

Key Specifications

Pinout & Package

Package: 16-lead plastic MSOP (small outline package), 3 mm × 4.9 mm footprint, exposed pad not present (unlike DFN variant). Thermal resistance θ_JA = 110°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit SAR ADC applications.

Compared with ADS8860IDRCT and AD7960BCPZ, the LTC2368IMS-16#TRPBF offers optimal balance of differential input flexibility, integrated timing, ultra-low power, and industrial temperature range - making it ideal for embedded systems where size, power, and robustness are co-prioritized.

Availability

LTC2368IMS-16#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, industrial process control, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC2368IMS-16#TRPBF 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 LTC2368IMS-16#TRPBF belongs to ADI's precision SAR ADC product line, engineered for applications demanding high resolution, low power, and deterministic timing - especially where space, thermal headroom, and supply voltage flexibility are critical.

FAQ

What is the maximum recommended reference voltage for the LTC2368IMS-16#TRPBF?

The LTC2368IMS-16#TRPBF supports a reference voltage range of 2.5 V to 5.1 V. Exceeding 5.1 V violates absolute maximum ratings and may cause permanent damage. At 5.1 V, the LSB size is 78 µV, maximizing dynamic range without compromising linearity - verified across the full –40°C to +85°C operating range.

Does the LTC2368IMS-16#TRPBF require an external clock source?

No, the LTC2368IMS-16#TRPBF integrates an internal oscillator that sets conversion timing. This eliminates dependency on external clock generators or crystals, reducing system BOM count and jitter-sensitive layout concerns. The internal clock ensures consistent 460–527 ns conversion time regardless of ambient conditions.

Can the LTC2368IMS-16#TRPBF operate with a 1.8 V OVDD supply while using a 2.5 V VDD supply?

Yes - the LTC2368IMS-16#TRPBF fully supports independent 1.8 V OVDD and 2.5 V VDD supplies. Digital I/O pins (SCK, SDO, CNV, BUSY, etc.) reference OVDD, allowing seamless interfacing with 1.8 V microcontrollers. All timing parameters, including tSCK (10 ns min), are guaranteed across the 1.71–5.25 V OVDD range.

How does the pseudo-differential input architecture of the LTC2368IMS-16#TRPBF improve noise immunity?

The LTC2368IMS-16#TRPBF's pseudo-differential input measures IN+ relative to IN–, which is biased near GND (±100 mV). This configuration rejects common-mode noise coupled onto both traces - achieving 80 dB CMRR at 500 kHz. Unlike true differential ADCs, it avoids the need for matched gain/phase paths, simplifying front-end design while retaining EMI resilience.

Is the LTC2368IMS-16#TRPBF pin-compatible with other members of the LTC2368 family?

Yes - all LTC2368-16 variants (e.g., LTC2368CMS-16#TRPBF, LTC2368HMS-16#TRPBF, LTC2368IMS-16#TRPBF) share identical 16-lead MSOP pinouts and electrical behavior. Only temperature grade and ordering suffix differ; the LTC2368IMS-16#TRPBF is rated for –40°C to +85°C and supplied in tape-and-reel packaging.