Analog Devices Inc. LTC2453IDDB#TRMPBF

Overview

LTC2453IDDB#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, ±2 LSB integral nonlinearity, and 0.2 µA sleep current - ideal for low-power system monitoring and embedded sensor interfaces.

For engineers reviewing the LTC2453IDDB#TRMPBF datasheet, LTC2453IDDB#TRMPBF pinout, LTC2453IDDB#TRMPBF application, or LTC2453IDDB#TRMPBF equivalent, key selection considerations include its ultra-low input sampling current (50 nA), integrated oscillator (no external crystal required), differential reference support up to ±(VREF+ − VREF−), and guaranteed no missing codes over –40°C to +85°C industrial temperature range.

Technical Context

The LTC2453IDDB#TRMPBF implements a proprietary delta-sigma modulator with decimating sinc filter and continuous internal offset/full-scale calibration - eliminating latency in multiplexed applications and ensuring accuracy stability across temperature without user intervention. Its input sampling architecture reduces average input current by orders of magnitude versus conventional delta-sigma ADCs.

It operates exclusively as an I²C slave with hard-wired 7-bit address 0010100 (0x24), supports Standard- and Fast-Mode I²C (up to 400 kHz), and features open-drain SDA requiring external 1.7 kΩ pull-up. Conversion result is 16-bit two's complement (15-bit + sign), output on falling SCL edges with no pipeline delay.

Key Specifications

Pinout & Package

Package: 8-lead 3 mm × 2 mm plastic DFN (DDB) with exposed pad (Pin 9), rated for –40°C to +85°C operation. Exposed pad must be soldered to PCB ground for thermal and electrical performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit differential I²C ADC applications.

Compared with ADS1115IDGSR and MCP3424-E/SL, the LTC2453IDDB#TRMPBF delivers superior energy efficiency per conversion (sub-50 µW avg), deterministic single-cycle settling for multiplexed reads, and zero external timing components - making it optimal for space-constrained, battery-sensitive, and latency-critical industrial sensing nodes.

Availability

LTC2453IDDB#TRMPBF is available at Aetrix Electronics and suitable for system monitoring, environmental sensing, and industrial process control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC2453IDDB#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 LTC2453IDDB#TRMPBF belongs to ADI's ultra-low-power precision delta-sigma ADC product line, designed specifically for space- and energy-constrained embedded systems requiring high-resolution, low-drift, and minimal external components.

FAQ

What is the operating temperature range of the LTC2453IDDB#TRMPBF?

The LTC2453IDDB#TRMPBF is specified for industrial-grade operation from –40°C to +85°C. This range is confirmed in the "ORDER INFORMATION" table and applies to all electrical characteristics unless otherwise noted. The device uses the "I" grade marking and is packaged in an 8-lead DFN (DDB) with exposed pad grounded for thermal reliability.

Does the LTC2453IDDB#TRMPBF require an external clock or crystal?

No, the LTC2453IDDB#TRMPBF includes a fully integrated oscillator and requires no external clock source, crystal, or timing components. This is explicitly stated in the FEATURES section and BLOCK DIAGRAM, where "INTERNAL OSCILLATOR" is shown as a core functional block - simplifying design and reducing bill-of-materials cost.

What is the I²C address of the LTC2453IDDB#TRMPBF?

The LTC2453IDDB#TRMPBF has a fixed 7-bit I²C slave address of 0010100 (0x24), as documented in the APPLICATIONS INFORMATION section under "I2C INTERFACE". The device does not support address pins or configuration bits - communication begins immediately upon addressing this static address with a read bit (R=1).

How does the LTC2453IDDB#TRMPBF handle overrange and underrange input conditions?

The LTC2453IDDB#TRMPBF provides typical overrange + underrange capability of 31 LSB total, distributed between IN+ and IN–. For example, if VIN– = GND and VREF– = GND, the device can correctly digitize VIN+ down to ~–1.22 mV (8 LSB below GND) before clamping - enabling accurate measurement of signals slightly outside the nominal reference span without external level-shifting circuitry.

What decoupling capacitors are required for stable operation of the LTC2453IDDB#TRMPBF?

The LTC2453IDDB#TRMPBF requires a 0.1 µF high-quality ceramic capacitor in parallel with a 10 µF ceramic capacitor between VCC and GND, placed as close as possible to Pins 4 and 1 respectively. Per the APPLICATIONS INFORMATION section, the 0.1 µF capacitor must be nearest the package, and the decoupling path must avoid vias and minimize loop area to preserve noise immunity and measurement accuracy.