Analog Devices Inc. LTC2462CDD#TRPBF

Overview

LTC2462CDD#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit delta-sigma ADC with integrated 1.25V precision reference, differential ±V_REF input range, SPI interface, and ultra-low 2µA sleep current. It operates from 2.7V to 5.5V, delivers 60 conversions per second, and targets high-accuracy sensor digitization in space-constrained industrial monitoring systems.

For engineers reviewing the LTC2462CDD#TRPBF datasheet, LTC2462CDD#TRPBF pinout, LTC2462CDD#TRPBF application, or LTC2462CDD#TRPBF equivalent, key selection criteria include guaranteed no-missing-codes performance, 2LSB offset error, ±0.01% gain error, 10ppm/°C max reference drift, and compatibility with multiplexed low-power sensor arrays requiring single-cycle settling.

Technical Context

The LTC2462CDD#TRPBF implements a proprietary delta-sigma architecture with continuous internal offset and full-scale calibration, eliminating user intervention while maintaining accuracy across temperature. Its integrated oscillator enables autonomous operation without external timing components.

It supports two power states: conversion mode (1.5mA typical) and sleep mode (≤2µA), with configurable reference shutdown via SPI command. The differential input stage accepts ±1.25V signals with 8-LSB overrange capability below GND or above V_REF, enabling direct measurement of bipolar transducer outputs.

Key Specifications

Pinout & Package

Package: 12-lead (3mm × 3mm) plastic DFN with exposed pad (DD package); RoHS-compliant, tape-and-reel delivery (TRPBF suffix).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS1115IRUGT and LTC2418CGN#PBF, the LTC2462CDD#TRPBF uniquely combines differential input, ultra-low sleep current, and integrated 1.25V reference in a 3mm × 3mm DFN-making it optimal for compact, battery-powered, single-sensor measurement nodes where SPI is available and reference simplicity is critical.

Availability

LTC2462CDD#TRPBF is available at Aetrix Electronics and suitable for industrial process monitoring, environmental sensor nodes, direct temperature measurement, and embedded ADC upgrades requiring stable component supply across extended production lifecycles.

Supply support for LTC2462CDD#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 semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LTC2462CDD#TRPBF belongs to ADI's ultra-low-power precision delta-sigma ADC product line, designed specifically for space-constrained, battery-operated, and high-accuracy sensor interface applications demanding integrated references and minimal external components.

FAQ

What is the operating temperature range for the LTC2462CDD#TRPBF?

The LTC2462CDD#TRPBF is rated for 0°C to 70°C ambient operation (C-grade). This range is validated per the Absolute Maximum Ratings table and applies to all electrical specifications unless otherwise noted. The device uses internal thermal compensation to maintain 10ppm/°C max reference drift and 2LSB offset error across this full span. For extended-range alternatives, consider the LTC2462IDD#TRPBF (–40°C to 85°C).

Does the LTC2462CDD#TRPBF require an external crystal or oscillator?

No, the LTC2462CDD#TRPBF does not require an external crystal or oscillator. It integrates a precision internal oscillator that drives the delta-sigma modulator and digital filter, enabling fully autonomous operation with no external timing components. This eliminates board space, cost, and reliability risks associated with external crystals while ensuring consistent 60 sps conversion rate across voltage and temperature.

How does the LTC2462CDD#TRPBF achieve 2µA sleep current?

The LTC2462CDD#TRPBF achieves ≤2µA sleep current by powering down both the ADC core and the integrated 1.25V reference upon command via the SLP bit in the SPI configuration word. In this state, only leakage paths remain active. The reference restarts in 12ms after CS goes low, and the first conversion post-wakeup should be discarded to ensure full reference settling before relying on measurement accuracy.

Can the LTC2462CDD#TRPBF measure signals below ground?

Yes, the LTC2462CDD#TRPBF can digitize inputs up to 8 LSBs below ground (e.g., –0.305mV at V_REF = 1.25V) when configured with IN– tied to GND and IN+ driven negative. This overrange capability is inherent to its proprietary input sampling architecture and is documented in Figure 3 and Applications Information section. It enables direct measurement of thermocouple outputs and other bipolar transducers without level-shifting circuitry.

Is the LTC2462CDD#TRPBF pin-compatible with the LTC2460 series?

Yes, the LTC2462CDD#TRPBF is pin-compatible with the LTC2460CDD#TRPBF in the same DD package. Both share identical pinout, supply requirements, SPI timing, and register structure. The primary functional difference is input topology: LTC2462CDD#TRPBF supports differential ±V_REF inputs, while LTC2460CDD#TRPBF supports single-ended 0–V_REF inputs. Firmware can often be reused with minor scaling adjustments.