Analog Devices Inc. LTC2053CMS8-SYNC#PBF

Overview

LTC2053CMS8-SYNC#PBF from Analog Devices (formerly Linear Technology) is a precision rail-to-rail, zero-drift instrumentation amplifier with external clock synchronization capability. It delivers 116dB CMRR independent of gain, <10µV max input offset voltage, and <50nV/°C drift across 0°C to 70°C, operating from 2.7V single or ±5.5V dual supplies. It is used in high-resolution thermocouple amplification and strain gauge signal conditioning where timing coherence with system clocks is critical.

For engineers reviewing the LTC2053CMS8-SYNC#PBF datasheet, LTC2053CMS8-SYNC#PBF pinout, LTC2053CMS8-SYNC#PBF application, or LTC2053CMS8-SYNC#PBF equivalent, key selection criteria include its synchronized 3kHz sampling (via 24kHz CLK input), rail-to-rail I/O, resistor-programmable gain, and guaranteed performance over temperature without external clock dependency in non-SYNC variants.

Technical Context

The LTC2053CMS8-SYNC#PBF employs charge-balanced sampled-data front-end architecture to convert differential inputs into single-ended signals, followed by amplification via an internal zero-drift op amp. Its CLK pin (Pin 1) accepts an external 24kHz square wave to precisely control the 3kHz sampling frequency-critical for anti-aliasing in synchronized data acquisition systems.

Unlike the base LTC2053, which uses Pin 1 as an active-low enable (EN), the LTC2053CMS8-SYNC#PBF repurposes Pin 1 exclusively as a clock input. The internal sampling frequency remains fixed at 3kHz when driven externally, and device specifications-including CMRR, offset, and noise-are validated at this synchronized rate per datasheet test conditions.

Key Specifications

Pinout & Package

Package: 8-Lead Plastic MSOP (MS8), 3mm × 3mm footprint, 0.65mm pitch, 0.85mm height - suitable for space-constrained PCB layouts in handheld test equipment.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar instrumentation amplifier applications.

Compared with AD8421ARMZ and LTC2057IMS8#PBF, the LTC2053CMS8-SYNC#PBF uniquely combines synchronized low-frequency sampling, guaranteed µV-level offset stability, and true differential rail-to-rail input-making it irreplaceable in metrology-grade, time-coherent sensor front-ends.

Availability

LTC2053CMS8-SYNC#PBF is available at Aetrix Electronics and suitable for thermocouple amplification, strain gauge readout, and high-resolution weigh scale applications requiring stable component supply across production lifecycles.

Supply support for LTC2053CMS8-SYNC#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.

The LTC2053 product line was designed specifically for ultra-precision, low-drift signal conditioning in sensor interfaces where DC accuracy, long-term stability, and noise performance outweigh raw speed requirements.

FAQ

What is the function of Pin 1 on the LTC2053CMS8-SYNC#PBF?

Pin 1 on the LTC2053CMS8-SYNC#PBF is the CLK input, accepting a 24kHz square wave to synchronize the internal 3kHz sampling clock. This differs from the non-SYNC LTC2053, where Pin 1 serves as an active-low enable (EN). Driving CLK ensures deterministic timing alignment across multiple LTC2053CMS8-SYNC#PBF devices in multi-channel systems.

Can the LTC2053CMS8-SYNC#PBF operate from a single 3V supply?

Yes, the LTC2053CMS8-SYNC#PBF operates from a single 2.7V to 6V supply. At 3V, it maintains rail-to-rail input common-mode range (0V to 3V) and rail-to-rail output swing (within 20mV of rails), enabling full dynamic range utilization in battery-powered instrumentation. The REF pin must be biased appropriately (e.g., 0.1–1.6V) to satisfy the input voltage constraint equation.

How does the LTC2053CMS8-SYNC#PBF achieve 116dB CMRR independent of gain?

The LTC2053CMS8-SYNC#PBF achieves 116dB CMRR independent of gain through its patented charge-balanced, switched-capacitor front-end architecture. This topology inherently rejects common-mode signals before amplification, decoupling CMRR from the gain-setting resistors and internal op-amp stage-unlike traditional three-op-amp IA topologies where CMRR degrades with increasing gain.

What is the maximum allowable differential input voltage for the LTC2053CMS8-SYNC#PBF?

The maximum differential input voltage for the LTC2053CMS8-SYNC#PBF is constrained by the equation: V– ≤ (V+IN – V–IN) + VREF ≤ V+ – 1.3V. For example, with a 3V single supply and VREF = 0.2V, the maximum differential input is 1.5V. Exceeding this limit risks distortion or saturation, even if individual input pins remain within rail-to-rail voltage range.

Does the LTC2053CMS8-SYNC#PBF require external passive components for basic operation?

Yes, the LTC2053CMS8-SYNC#PBF requires two external resistors (R1, R2) connected to RG and REF pins to set gain, plus a 0.1µF ceramic capacitor between V+ and V– for supply bypassing. No external clock is needed unless synchronization is required; the device defaults to internal 3kHz sampling when CLK is left floating, though Analog Devices recommends using the non-SYNC variant in that case.