Texas Instruments TLC27L4IDG4

Overview

TLC27L4IDG4 from Texas Instruments is a precision quad CMOS operational amplifier optimized for low-power, single-supply operation in sensor signal conditioning and industrial monitoring systems. It delivers 10 mV max input offset voltage (25°C), ultra-low 68 µA typical supply current (VDD = 5 V), and rail-to-rail output swing down to the negative rail - enabling accurate amplification of weak signals in battery-powered field transmitters.

For engineers reviewing the TLC27L4IDG4 datasheet, TLC27L4IDG4 pinout, TLC27L4IDG4 application, or TLC27L4IDG4 equivalent, this page provides verified electrical specifications, SOIC-14 package details, real-world use cases in pressure/temperature transmitters, and two confirmed alternative parts with documented functional and parametric differences.

Technical Context

The TLC27L4IDG4 employs TI's LinCMOS™ silicon-gate process to achieve high input impedance (10¹² Ω), sub-picoampere input bias current (0.6 pA typ), and latch-up immunity - distinguishing it from bipolar op-amps while avoiding their power penalties. Its common-mode input range extends 0.2 V below GND, supporting true single-supply operation without level-shifting circuitry.

Designed for stability across temperature and supply variation, it maintains 65–87 dB CMRR and 70–98 dB PSRR over –40°C to +85°C, with guaranteed operation from 4 V to 16 V. Input offset voltage drift is specified at 0.1 µV/month, including first-30-day stabilization, critical for long-term calibration integrity in remote instrumentation.

Key Specifications

Pinout & Package

Package: SOIC-14 (D suffix), 8.65 mm × 3.91 mm body, 1.27 mm pitch, surface-mount, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad precision op-amp applications.

Compared with TLV2464IDR and LM324DR, TLC27L4IDG4 uniquely balances ultra-low power (68 µA), rail-to-rail output, and 10 mV VIO within a 4–16 V operating window - making it the optimal choice for long-life, single-supply industrial sensor interfaces where both accuracy and energy efficiency are mandatory.

Availability

TLC27L4IDG4 is available at Aetrix Electronics and suitable for pressure transmitter signal conditioning, temperature transmitter analog front-ends, smoke detector analog processing, and remote field sensor interface applications requiring stable component supply across extended production lifecycles.

Supply support for TLC27L4IDG4 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

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of heritage in precision op-amps and industrial-grade signal chain solutions.

The TLC27Lx family was designed specifically for low-power, high-impedance sensor interfacing in harsh industrial environments - emphasizing long-term offset stability, ESD robustness, and single-supply usability without performance trade-offs.

FAQ

What is the maximum input offset voltage specification for TLC27L4IDG4 at 25°C?

The TLC27L4IDG4 has a maximum input offset voltage of 10 mV at 25°C, as specified in the Electrical Characteristics table for the I-suffix (–40°C to +85°C) grade. This value applies across the full operating temperature range up to 13 mV, ensuring predictable DC error in precision gain stages without trimming.

Does TLC27L4IDG4 support true single-supply operation with inputs extending below ground?

Yes, TLC27L4IDG4 supports true single-supply operation with its common-mode input voltage range extending 0.2 V below GND (e.g., –0.2 V at VDD = 5 V). This allows direct connection to ground-referenced sensors such as strain gauges and thermocouples without external level-shifting circuitry.

What is the typical supply current for TLC27L4IDG4 at 5 V and 25°C?

The typical supply current for TLC27L4IDG4 is 68 µA at VDD = 5 V and TA = 25°C, measured across all four amplifiers with no load. This ultra-low quiescent current enables multi-year operation from coin-cell batteries in wireless sensor nodes and portable diagnostic equipment.

Which package type does TLC27L4IDG4 use, and what are its key mechanical dimensions?

TLC27L4IDG4 uses the SOIC-14 (D) package: 8.65 mm × 3.91 mm body size, 1.27 mm lead pitch, and 1.75 mm maximum height. It is a surface-mount, RoHS-compliant package with gull-wing leads, optimized for automated assembly and high-density PCB layouts.

How does the input bias current of TLC27L4IDG4 compare to bipolar op-amps, and why does it matter?

TLC27L4IDG4 exhibits a typical input bias current of 0.6 pA at 25°C - over six orders of magnitude lower than typical bipolar op-amps (~100 nA). This ultra-low bias current prevents signal degradation when interfacing with high-impedance sources like pH electrodes, photodiodes, and capacitive sensors, preserving measurement fidelity.