Analog Devices Inc. LTC2463CMS#TRPBF

Overview

LTC2463CMS#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit differential ΔΣ analog-to-digital converter with integrated 1.25V precision reference, I²C interface, and ultra-low 200nA sleep current. It operates from 2.7V to 5.5V, delivers 60 conversions per second, and achieves ±2 LSB offset error and ±0.01% gain error - enabling high-accuracy sensor digitization in space-constrained industrial monitoring systems.

For engineers reviewing the LTC2463CMS#TRPBF datasheet, LTC2463CMS#TRPBF pinout, LTC2463CMS#TRPBF application, or LTC2463CMS#TRPBF equivalent, key selection criteria include its differential input architecture, 12-lead MSOP package, integrated reference drift ≤±5 ppm/°C (I-grade), and guaranteed no missing codes over temperature - critical for direct temperature measurement and embedded ADC upgrades where layout area and calibration stability are constrained.

Technical Context

The LTC2463CMS#TRPBF implements a proprietary delta-sigma modulator with internal oscillator and sinc³ decimation filter, delivering 16-bit resolution without external timing components. Its differential input stage accepts ±1.25V full-scale range referenced to the internal 1.25V REFOUT, with continuous on-chip offset and full-scale calibration transparent to the host controller.

Conversion settling is single-cycle (16.6 ms typ), eliminating latency in multiplexed sensing. Input sampling current is only 50 nA, enabling direct RC filtering without significant error - a key advantage over conventional delta-sigma ADCs in low-power environmental monitoring designs.

Key Specifications

Pinout & Package

Package: 12-lead plastic MSOP (3.0 mm × 4.9 mm, 0.65 mm pitch), exposed pad grounded for thermal and noise performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS1115IDGSR and MCP3424-E/ST, the LTC2463CMS#TRPBF uniquely combines 16-bit no-missing-codes accuracy, integrated 1.25 V reference with ≤5 ppm/°C drift, 200 nA sleep current, and I²C global sync - making it optimal for space- and power-constrained industrial sensor nodes requiring long-term calibration stability without external components.

Availability

LTC2463CMS#TRPBF is available at Aetrix Electronics and suitable for industrial monitoring, environmental sensing, and embedded instrumentation requiring stable component supply, long-lifecycle support, and guaranteed C-grade temperature performance.

Supply support for LTC2463CMS#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 LTC2463CMS#TRPBF belongs to ADI's ultra-low-power precision delta-sigma ADC family, designed specifically for space-constrained, battery-operated sensor systems demanding high DC accuracy, minimal external components, and robust operation across commercial temperature ranges.

FAQ

What is the operating temperature range for the LTC2463CMS#TRPBF?

The LTC2463CMS#TRPBF is specified for 0°C to 70°C (C-grade). This range is validated for commercial and light industrial environments where ambient conditions remain within standard office or controlled cabinet limits. The device uses internal calibration and low-drift reference design to maintain ±2 LSB offset error and ±0.01% gain error across this full span without external compensation. For extended temperature operation, the LTC2463IMS#TRPBF variant supports –40°C to 85°C.

Does the LTC2463CMS#TRPBF require an external crystal or clock source?

No, the LTC2463CMS#TRPBF does not require an external crystal or clock source. It integrates a precision internal oscillator that drives the delta-sigma modulator and sinc³ filter, enabling fully autonomous operation from power-up. This eliminates board space, cost, and reliability concerns associated with external timing components - a key enabler for ultra-compact sensor modules. The conversion time remains tightly controlled at 16.6 ms (typ) regardless of supply voltage or temperature.

How does the LTC2463CMS#TRPBF handle input signals below ground?

The LTC2463CMS#TRPBF supports differential inputs down to –8 LSB below ground (≈ –0.305 mV at 1.25 V reference) due to its proprietary input sampling architecture. When VIN– is tied to GND, the device can resolve small negative voltages at IN+ without external level-shifting circuitry. This capability is explicitly characterized in the datasheet (Figure 3) and enables direct thermocouple or bridge sensor interfacing where one side floats below system ground - a feature not found in most standard delta-sigma ADCs.

Can the internal reference of the LTC2463CMS#TRPBF be disabled to save power?

Yes, the LTC2463CMS#TRPBF allows independent shutdown of the internal reference via the SLP bit in the I²C configuration register. When set, the reference powers down after the next conversion completes, reducing total supply current to 200 nA. Reference startup takes 12 ms (with 0.1 µF COMP and REFOUT capacitors), so either the first post-wakeup conversion must be discarded or the host must insert a 12 ms delay before reading valid data. This feature is essential for maximizing battery life in duty-cycled sensor applications.

What are the I²C address options for the LTC2463CMS#TRPBF?

The LTC2463CMS#TRPBF supports two hardware-configurable I²C addresses: 0x24 (when A0 = GND) and 0x54 (when A0 = VCC). Both addresses respond to the global call address 0x77 for synchronized conversion start across multiple devices on the same bus. This dual-address capability allows up to two LTC2463CMS#TRPBF units to coexist on a single I²C bus without address conflict, simplifying multi-sensor node design without requiring GPIO-based device selection.