Analog Devices Inc. LTC2460CMS#PBF

Overview

LTC2460CMS#PBF from Analog Devices (formerly Linear Technology) is a 16-bit delta-sigma analog-to-digital converter with integrated 1.25V precision reference, single-ended input architecture, SPI interface, and MSOP-12 package. It delivers 60 conversions per second, 2 LSB offset error, 0.01% gain error, and operates from 2.7V to 5.5V supply - used in embedded sensor signal conditioning for industrial process control.

For engineers reviewing the LTC2460CMS#PBF datasheet, LTC2460CMS#PBF pinout, LTC2460CMS#PBF application, or LTC2460CMS#PBF equivalent, key selection considerations include its integrated 10ppm/°C max reference drift, ultra-low 200nA sleep current, no-latency serial output, single-cycle auto-shutdown behavior, and compatibility with multiplexed sensor inputs requiring stable DC accuracy over temperature.

Technical Context

The LTC2460CMS#PBF implements a proprietary delta-sigma modulator with internal oscillator, continuous offset and full-scale calibration, and oversampling ratio sufficient for relaxed anti-aliasing filtering. Its input sampling scheme draws only 50nA average input current, enabling direct RC filter interfacing without buffer amplifiers.

It operates in three deterministic states - CONVERT (16.6ms nominal), SLEEP/NAP, and DATA INPUT/OUTPUT - with CS-controlled transition timing and fixed conversion time eliminating latency concerns in time-critical multiplexed systems. The reference startup time is 12ms when COMP and REFOUT capacitors are both 0.1µF.

Key Specifications

Pinout & Package

Package: 12-lead plastic MSOP (3mm × 3mm), exposed pad optional, rated for 0°C to 70°C operating temperature.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS1115IDGSR and LTC2462CMS#PBF, the LTC2460CMS#PBF uniquely combines single-ended input, integrated 1.25V reference, 200nA sleep current, and SPI interface in a compact MSOP-12 - making it optimal for cost-sensitive, space-constrained, unipolar sensor interfaces requiring minimal external components.

Availability

LTC2460CMS#PBF is available at Aetrix Electronics and suitable for industrial process monitoring, environmental sensor nodes, and embedded data acquisition requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for LTC2460CMS#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 LTC2460CMS#PBF belongs to the LTC® ultra-low-power delta-sigma ADC family, designed specifically for precision sensor signal acquisition in space- and power-constrained industrial and instrumentation applications.

FAQ

What is the operating temperature range for the LTC2460CMS#PBF?

The LTC2460CMS#PBF is specified for 0°C to 70°C operation (C-grade). This MSOP-12 variant does not support extended industrial –40°C to 85°C range - that capability is reserved for the LTC2460IMS#PBF variant. Thermal performance data (e.g., offset drift, reference stability) in the datasheet applies across this full 0°C–70°C range.

Does the LTC2460CMS#PBF require an external crystal or clock source?

No, the LTC2460CMS#PBF includes a fully integrated oscillator and requires no external clock components. It operates autonomously from a single 2.7V–5.5V supply, with all timing derived internally - simplifying design and reducing bill-of-materials cost and PCB area.

How does the LTC2460CMS#PBF handle input overrange or underrange conditions?

The LTC2460CMS#PBF clamps output codes at 0 (all zeros) for inputs below 0V and at 65535 (all ones) for inputs above VREF (1.25V). It does not saturate linearly beyond these limits - instead, it holds the extreme code, providing clear indication of out-of-range conditions without wraparound or undefined behavior.

Can the LTC2460CMS#PBF's reference be disabled to reduce power further?

Yes - the LTC2460CMS#PBF supports reference shutdown via the SLP bit in the SDI programming sequence. When SLP = 1, the internal 1.25V reference powers down after conversion completion, reducing total sleep current to 200nA. Reference restarts automatically on next CS assertion, with 12ms stabilization time before valid conversion.

Is the LTC2460CMS#PBF pin-compatible with the LTC2462CMS#PBF?

Yes - the LTC2460CMS#PBF and LTC2462CMS#PBF share identical MSOP-12 pinouts, electrical timing, supply requirements, and SPI protocol. They differ only in input architecture (single-ended vs. differential) and default SPD bit behavior; software and PCB layouts are interchangeable for drop-in replacement where input topology permits.