Analog Devices Inc. LTC2453CDDB#TRMPBF

Overview

LTC2453CDDB#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 0°C to 70°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 LTC2453CDDB#TRMPBF datasheet, LTC2453CDDB#TRMPBF pinout, LTC2453CDDB#TRMPBF application, or LTC2453CDDB#TRMPBF equivalent, key selection considerations include its 8-pin 3mm × 2mm DFN package, differential input range up to ±(VREF+ – VREF–), single-cycle conversion settling, continuous internal offset/full-scale calibration, and I²C slave address 0010100b - all critical for low-power, precision sensor digitization in space-constrained embedded designs.

Technical Context

The LTC2453CDDB#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-input leakage. Its internal oscillator eliminates external timing components, and it delivers true no-latency output: each conversion maps one-to-one to a 16-bit signed result with no filter settling delay.

It operates exclusively as an I²C slave (address 0010100b), supports Standard- and Fast-Mode (up to 400 kHz), and transitions automatically between conversion (800 µA), sleep (<0.2 µA), and data output states. Continuous on-chip offset and full-scale calibration runs transparently every conversion, ensuring stability across temperature and time without user intervention.

Key Specifications

Pinout & Package

Package: 8-lead 3 mm × 2 mm plastic DFN (DDB) with exposed pad (Pin 9 = GND, must be soldered).

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 LTC2453CDDB#TRMPBF uniquely combines 60 sps throughput, <0.2 µA sleep current, integrated oscillator, and no-latency output in a 3 mm × 2 mm DFN - making it optimal for compact, battery-operated, dual-sensor applications where simplicity and micropower efficiency are primary constraints.

Availability

LTC2453CDDB#TRMPBF is available at Aetrix Electronics and suitable for environmental monitoring, system health diagnostics, and portable instrumentation requiring stable component supply, guaranteed RoHS-compliant sourcing, and consistent parametric performance across production lots.

Supply support for LTC2453CDDB#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 with precision signal chain solutions.

The LTC2453CDDB#TRMPBF belongs to ADI's ultra-low-power, high-accuracy delta-sigma ADC product line, designed specifically for space- and energy-constrained embedded systems needing reliable, calibrated digitization of differential sensor outputs without external timing or support components.

FAQ

What is the operating temperature range of the LTC2453CDDB#TRMPBF?

The LTC2453CDDB#TRMPBF is specified for the commercial temperature range of 0°C to 70°C. This grade is validated per the datasheet's C-grade electrical characteristics table and corresponds to the "C" suffix in the part number. It is not rated for extended industrial or automotive temperature ranges - those require the I-grade variants (e.g., LTC2453IDDB#TRMPBF).

Does the LTC2453CDDB#TRMPBF require external components for basic operation?

No, the LTC2453CDDB#TRMPBF requires no external oscillator or timing components due to its integrated oscillator. For reliable operation, only two decoupling capacitors are mandatory: a 0.1 µF ceramic capacitor and a 10 µF ceramic capacitor placed between VCC and GND, as close as possible to the package. External pull-up resistors on SDA and SCL are also required for I²C bus functionality.

How does the LTC2453CDDB#TRMPBF handle input overvoltage conditions?

The LTC2453CDDB#TRMPBF provides overrange and underrange capability totaling ~31 LSB, allowing accurate digitization of inputs slightly beyond the nominal ±(VREF+ – VREF–) range. For example, with VREF+ = 5 V and VREF– = 0 V, it can resolve signals up to ~8 LSB below ground or ~23 LSB above 5 V before clamping occurs - useful for handling sensor transients or cold-junction offsets without external protection circuitry.

What is the I²C address of the LTC2453CDDB#TRMPBF and is it configurable?

The LTC2453CDDB#TRMPBF has a fixed 7-bit I²C slave address of 0010100b (0x24 in hexadecimal). This address is hard-wired internally and cannot be modified via pins or registers. Multiple LTC2453CDDB#TRMPBF devices can share the same I²C bus only if their addresses differ - since this part offers no address selection option, bus arbitration requires using distinct variants (e.g., different reference or grade) or external multiplexing.

Can the LTC2453CDDB#TRMPBF operate with a 2.5V reference voltage?

Yes, the LTC2453CDDB#TRMPBF supports a minimum differential reference voltage of 2.5 V (VREF+ – VREF– ≥ 2.5 V). So a 2.5 V reference is acceptable if applied differentially - for example, VREF+ = 2.5 V and VREF– = 0 V. However, the absolute voltage on REF+ must remain ≤ VCC, and REF– must remain ≥ 0 V, per the absolute maximum ratings. The device does not generate its own reference; it relies entirely on externally supplied REF+ and REF–.