Texas Instruments TLC27L2ACDR

Overview

TLC27L2ACDR from Texas Instruments is a precision dual CMOS operational amplifier optimized for low-power, single-supply sensor signal conditioning. It delivers 5 mV max input offset voltage at 25°C, ultra-low 34 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 TLC27L2ACDR datasheet, TLC27L2ACDR pinout, TLC27L2ACDR application, or TLC27L2ACDR equivalent, key selection criteria include its 0°C to 70°C operating range (C-suffix), SOIC-8 package, LinCMOS™ input stage with 10¹² Ω impedance, and verified performance in low-voltage analog front-ends requiring stability over time and temperature.

Technical Context

The TLC27L2ACDR uses Texas Instruments' silicon-gate LinCMOS™ process to achieve high DC precision and low power simultaneously. Its input stage provides 10¹² Ω input impedance and sub-picoampere bias currents, while maintaining common-mode input voltage range extending 0.2 V below ground - critical for single-supply operation with grounded sensors.

It features internal ESD protection rated to 2000 V (MIL-STD-883C, Method 3015.2) and latch-up immunity. The device operates from 3 V to 16 V across 0°C–70°C, supports unity-gain stable configurations, and exhibits 85 kHz unity-gain bandwidth and 34° phase margin at 25°C with 20 pF load.

Key Specifications

Pinout & Package

Package: SOIC-8 (D package), surface-mount, 3.9 mm × 4.9 mm footprint, standard JEDEC MS-012AC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2462IDR and OPA2333AIDR, the TLC27L2ACDR offers the lowest power consumption and proven long-term stability for C-temp-range industrial sensor interfaces - making it ideal where battery life and decades-long calibration hold priority over speed or zero-drift performance.

Availability

TLC27L2ACDR is available at Aetrix Electronics and suitable for smoke detector design, pressure transmitter manufacturing, and temperature sensor module production requiring stable component supply across extended product lifecycles.

Supply support for TLC27L2ACDR 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.

The TLC27Lx family was designed specifically for precision, low-power, single-supply analog signal conditioning in battery-operated and remote field instrumentation - leveraging LinCMOS™ technology to merge bipolar-like accuracy with CMOS power efficiency.

FAQ

What is the maximum operating temperature range for the TLC27L2ACDR?

The TLC27L2ACDR is characterized for operation from 0°C to 70°C (C-suffix grade). It supports supply voltages from 3 V to 16 V within this range. Operation outside this temperature window is not guaranteed per datasheet specifications, and parameters such as input offset voltage and supply current may degrade beyond published limits. For extended temperature applications, consider the TLC27L2I (−40°C to +85°C) or TLC27L2M (−55°C to +125°C) variants.

Does the TLC27L2ACDR support true rail-to-rail input?

No, the TLC27L2ACDR does not support rail-to-rail input. Its common-mode input voltage range extends to −0.2 V (below GND) and up to 3.5 V at VDD = 5 V, meaning the noninverting and inverting inputs operate within that window. However, it does provide rail-to-rail output swing - the output can reach within 50 mV of GND and within 0.9 V of VDD. This makes it suitable for single-supply systems where input signals are referenced near ground but full output utilization is needed.

What is the typical input bias current of the TLC27L2ACDR at 25°C?

The typical input bias current of the TLC27L2ACDR is 0.6 pA at 25°C, with a maximum of 60 pA over the full 0°C to 70°C operating range. This ultra-low value results from its LinCMOS™ input stage and enables use with very high-impedance sources such as piezoelectric sensors, pH electrodes, and photodiode transimpedance configurations without significant error from bias current flow.

Can the TLC27L2ACDR drive capacitive loads reliably?

The TLC27L2ACDR is unity-gain stable with capacitive loads up to 20 pF, as verified in the datasheet's operating characteristics (Figure 6-3, phase margin ≥34°). Driving larger capacitive loads (e.g., >50 pF) may cause instability or ringing due to reduced phase margin. For applications requiring heavier capacitive loading, external isolation resistors (e.g., 10–100 Ω in series with the output) or alternative op-amps with enhanced capacitive drive capability should be evaluated.

Is the TLC27L2ACDR pin-compatible with other devices in the TLC27Lx family?

Yes, the TLC27L2ACDR is pin-compatible with all members of the TLC27Lx dual op-amp family in the SOIC-8 (D) package, including TLC27L2CDR, TLC27L2BCDR, and TLC27L7CDR. All share identical pinout (1IN+, 1IN−, 1OUT, GND, 2IN+, 2IN−, 2OUT, VDD), allowing drop-in substitution where performance requirements align - for example, upgrading to TLC27L2BCDR for 2 mV VIO or TLC27L7CDR for 1 mV VIO without PCB changes.