Analog Devices Inc. LTC2453ITS8#TRMPBF

Overview

LTC2453ITS8#TRMPBF from Analog Devices (formerly Linear Technology) is a fully differential, 16-bit delta-sigma analog-to-digital converter with I²C interface, operating from 2.7V to 5.5V supply, delivering 60 conversions per second and ±2 LSB integral nonlinearity over –40°C to +85°C. It features integrated oscillator, auto-sleep mode (<0.2 µA), and ultra-low input sampling current (50 nA), enabling direct connection to high-impedance sensors in battery-powered environmental monitoring systems.

For engineers reviewing the LTC2453ITS8#TRMPBF datasheet, LTC2453ITS8#TRMPBF pinout, LTC2453ITS8#TRMPBF application, or LTC2453ITS8#TRMPBF equivalent, key selection considerations include its TSOT-23-8 package, differential input range up to ±(VREF⁺–VREF⁻), continuous internal offset/full-scale calibration, single-cycle conversion settling, and I²C slave address 0x24 - all critical for low-power, precision sensor digitization in space-constrained industrial nodes.

Technical Context

The LTC2453ITS8#TRMPBF employs a delta-sigma modulator core with decimating sinc filter and proprietary input sampling architecture that reduces average input current to 50 nA while eliminating inter-pin leakage. Its internal oscillator eliminates external timing components, and it performs continuous on-chip offset and full-scale calibration transparently during every conversion cycle.

As an I²C slave device with fixed 7-bit address 0010100 (0x24), it outputs 16-bit signed data (MSB = sign bit) on falling SCL edges, supports Standard/Fast Mode (≤400 kHz), and enters <0.2 µA sleep mode automatically after conversion unless addressed - enabling sub-50 µW average power at 1 Hz read rate from 2.7 V.

Key Specifications

Pinout & Package

Package: 8-lead TSOT-23 (3 mm × 3 mm), exposed pad not present (DFN variant has exposed pad; TSOT-23 does not). Operating temperature range: –40°C to +85°C (I-grade).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS1115IDGSR and MCP3424-E/ST, the LTC2453ITS8#TRMPBF uniquely balances 60 sps throughput, <0.2 µA sleep, external differential reference control, and 50 nA input current - making it optimal for battery-operated, high-impedance, wide-dynamic-range sensor interfaces where power, flexibility, and simplicity are co-prioritized.

Availability

LTC2453ITS8#TRMPBF is available at Aetrix Electronics and suitable for environmental monitoring, industrial process control, and embedded ADC upgrades requiring stable component supply, long-term lifecycle support, and guaranteed I-grade (-40°C to +85°C) performance.

Supply support for LTC2453ITS8#TRMPBF 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 LTC2453ITS8#TRMPBF belongs to ADI's ultra-low-power precision delta-sigma ADC product line, designed specifically for space-constrained, battery-powered sensor nodes demanding high resolution, low drift, and minimal external components.

FAQ

What is the operating temperature range for the LTC2453ITS8#TRMPBF?

The LTC2453ITS8#TRMPBF is rated for –40°C to +85°C (I-grade), validated across this full range for parameters including INL (±2 LSB), offset error drift (0.02 LSB/°C), and supply current. This makes LTC2453ITS8#TRMPBF suitable for industrial environments where ambient temperature extremes are expected, unlike the C-grade (0°C to 70°C) variants.

Does the LTC2453ITS8#TRMPBF require external clock components?

No, the LTC2453ITS8#TRMPBF integrates a precision internal oscillator and requires no external crystals, capacitors, or timing components. This is confirmed in the datasheet "FEATURES" section and BLOCK DIAGRAM, where "INTERNAL OSCILLATOR" is explicitly shown feeding the delta-sigma modulator - a key enabler of its ultra-tiny form factor and simplified layout.

What is the I²C address of the LTC2453ITS8#TRMPBF?

The LTC2453ITS8#TRMPBF has a hard-wired 7-bit I²C slave address of 0010100 (0x24), as stated in the "APPLICATIONS INFORMATION" section and Figure 1. This fixed address eliminates configuration overhead but requires bus arbitration if multiple LTC2453ITS8#TRMPBF devices are used - no address pins or jumpers are provided.

How does the LTC2453ITS8#TRMPBF achieve ultra-low input sampling current?

The LTC2453ITS8#TRMPBF uses a proprietary input sampling scheme that reduces average input current to 50 nA - documented in the "FEATURES" list and "APPLICATIONS INFORMATION" section. This is achieved through optimized charge redistribution timing and internal switching architecture, enabling direct RC filtering without significant voltage drop or measurement error.

Can the LTC2453ITS8#TRMPBF measure input voltages beyond its reference range?

Yes, the LTC2453ITS8#TRMPBF provides overrange and underrange capability totaling up to 31 LSB (e.g., ±8 LSB below REF– or above REF+), as specified in the "ANALOG INPUTS AND REFERENCES" table and illustrated in Figure 2. This allows accurate digitization of signals slightly outside the nominal ±(VREF⁺–VREF⁻) range - a feature confirmed for LTC2453ITS8#TRMPBF in the "DIFFERENTIAL INPUT VOLTAGE" plots.