Texas Instruments TLC27L9CD

Overview

TLC27L9CD from Texas Instruments is a precision quad operational amplifier using LinCMOS™ technology, designed for low-power, single-supply sensor signal conditioning. It delivers 1 mV max input offset voltage at 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 in battery-powered field transmitters and smoke detectors.

For engineers reviewing the TLC27L9CD datasheet, TLC27L9CD pinout, TLC27L9CD application, or TLC27L9CD equivalent, key selection criteria include its guaranteed 1 mV VIO grade, –0.2 V to 3.5 V common-mode input range at 5 V supply, 85 kHz unity-gain bandwidth, and SOIC-14 package compatibility with legacy industrial analog designs.

Technical Context

The TLC27L9CD implements a silicon-gate LinCMOS™ input stage delivering 10¹² Ω input impedance and sub-picoampere bias currents (0.6 pA typ), enabling high-impedance sensor interfacing without significant loading error. Its architecture supports true single-supply operation with common-mode input extending 0.2 V below GND and output swinging to within 50 mV of GND.

It features internal ESD protection rated to 2000 V (MIL-STD-883C, Method 3015.2) and latch-up immunity, with specified operation from 0°C to 70°C. The device maintains stable offset drift (1.1 µV/°C avg) and high CMRR (65–87 dB) across temperature, making it suitable for precision DC-coupled measurement paths.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2474IDR and OPA2333AIDR, the TLC27L9CD offers the lowest quiescent power and widest supply range among these three, while providing proven reliability in C-temp industrial deployments - making it optimal for long-life, battery- or loop-powered field devices where absolute lowest IDD and 3–16 V flexibility outweigh zero-drift or rail-to-rail output needs.

Availability

TLC27L9CD is available at Aetrix Electronics and suitable for smoke detector design, pressure transmitter manufacturing, and temperature sensor module production requiring stable component supply across multi-year industrial programs.

Supply support for TLC27L9CD 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 engineered for ultra-low-power, high-precision analog signal conditioning in battery-operated and loop-powered field instrumentation - emphasizing offset stability, input impedance, and single-supply usability.

FAQ

What is the maximum input offset voltage specification for TLC27L9CD at 25°C?

The TLC27L9CD has a maximum input offset voltage of 1000 µV (1 mV) at 25°C, as specified in the Electrical Characteristics table for VDD = 5 V and C-suffix operation. This value is guaranteed across the 0°C to 70°C temperature range, with a worst-case of 1500 µV. The TLC27L9CD's 1 mV grade represents the highest precision option in the TLC27Lx series, distinguishing it from the TLC27L4 (10 mV), TLC27L4A (5 mV), and TLC27L4B (2 mV) variants.

Does TLC27L9CD support true single-supply operation with input signals near ground?

Yes, the TLC27L9CD supports true single-supply operation with its common-mode input voltage range extending to –0.2 V relative to GND at VDD = 5 V. This allows direct connection of sensors whose outputs swing to or slightly below ground (e.g., thermocouples, bridge circuits with center-tap bias), eliminating the need for level-shifting circuitry. The device maintains specified performance across this extended range, confirmed in Section 5.3 Recommended Operating Conditions.

What is the typical supply current consumption of TLC27L9CD at 5 V supply?

The TLC27L9CD draws a typical supply current of 68 µA for all four amplifiers combined when operated at VDD = 5 V, TA = 25°C, with no load and VIC = 2.5 V. This ultra-low IDD enables multi-year operation from small batteries or compliance with strict 4–20 mA loop power budgets. Measured values range from 40 µA (min) to 84 µA (max) across the 0°C to 70°C range, per Section 5.4 Electrical Characteristics.

Which package type does TLC27L9CD use, and is it RoHS-compliant?

The TLC27L9CD is packaged in a 14-pin SOIC (Small Outline Integrated Circuit), designated as "D" in TI's packaging nomenclature, with dimensions 8.65 mm × 3.91 mm and 1.27 mm lead pitch. Per Texas Instruments' official packaging documentation and product change notices, the SOIC-14 (D) package for TLC27L9CD is lead-free and RoHS-compliant, meeting JEDEC J-STD-020 moisture sensitivity level 3 requirements.

Can TLC27L9CD drive capacitive loads, and what is its phase margin?

The TLC27L9CD exhibits a typical phase margin of 34° at unity gain with CL = 20 pF and VDD = 5 V, as measured per Figure 6-3 test conditions. While stable with moderate capacitive loads (<100 pF), driving heavier capacitive loads (e.g., cables or ADC inputs) may require isolation resistors or gain adjustment. The device's 34° phase margin indicates conditional stability - application notes recommend verifying stability under actual layout and load conditions using the Bode plot data in Section 5.12.