Texas Instruments TLC27L4ACN

Overview

TLC27L4ACN from Texas Instruments is a precision quad operational amplifier in PDIP-14 package, featuring 5 mV max input offset voltage at 25°C, ultra-low 195 µW power consumption at 5 V, and rail-to-rail output swing down to the negative rail. It supports single-supply operation from 3 V to 16 V over 0°C to 70°C and is optimized for low-power sensor signal conditioning in battery-powered field transmitters.

For engineers reviewing the TLC27L4ACN datasheet, TLC27L4ACN pinout, TLC27L4ACN application, or TLC27L4ACN equivalent, this page delivers verified specifications, validated pin functions, confirmed operating conditions, and real-world use cases for industrial analog front-end design - including input bias current <1 pA, CMVR extending below ground, and ESD protection up to 2000 V.

Technical Context

The TLC27L4ACN uses TI's LinCMOS™ silicon-gate process to achieve high input impedance (10¹² Ω), extremely low input bias current (0.6 pA typ), and stable offset voltage drift (0.1 µV/month). Its architecture enables true single-supply operation with common-mode input range extending 0.2 V below GND and output swing to within 50 mV of GND at 5 V supply.

It delivers 85 kHz unity-gain bandwidth and 0.03 V/µs slew rate at 5 V, with supply-voltage rejection ratio of 97 dB and CMRR of 87 dB - all while drawing only 68 µA total supply current across four amplifiers at 25°C.

Key Specifications

Pinout & Package

Package: PDIP-14 (Plastic Dual In-line Package, 14-pin, 0.3-inch width).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2464AIPW and LM324N, the TLC27L4ACN uniquely balances sub-5-mV offset, pA-level input bias, and <100-µA total supply current - making it the only viable option for precision, low-power, single-supply industrial transmitter front-ends requiring long-term stability and battery longevity.

Availability

TLC27L4ACN is available at Aetrix Electronics and suitable for pressure transmitter design, temperature transmitter calibration, and smoke detector signal conditioning requiring stable component supply across extended production lifecycles.

Supply support for TLC27L4ACN 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, embedded processing, and connectivity technologies with over 50 years of innovation in precision analog ICs.

The TLC27Lx family was designed specifically for low-power, high-accuracy industrial sensor signal conditioning - emphasizing offset stability, rail-compatible operation, and robustness in unregulated single-supply environments.

FAQ

What is the maximum operating temperature range for the TLC27L4ACN?

The TLC27L4ACN is characterized for operation from 0°C to +70°C, as indicated by its 'C' suffix. It supports supply voltages from 3 V to 16 V within this range. At 70°C, key parameters such as supply current remain within 56 µA (max), and input offset voltage stays ≤12 mV - ensuring reliable performance in commercial and light-industrial ambient conditions. The TLC27L4ACN is not rated for extended temperature operation beyond 70°C.

Does the TLC27L4ACN support true rail-to-rail input operation?

The TLC27L4ACN 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 safely 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 asymmetric input/output capability makes it ideal for single-supply sensor interfaces where the input signal references GND but the output must maximize dynamic range.

Can the TLC27L4ACN be used in a 3.3 V system?

Yes, the TLC27L4ACN is fully specified down to 3 V supply voltage for the C-suffix grade, making it compatible with 3.3 V systems. At VDD = 3.3 V, the common-mode input range is –0.2 V to ~2.3 V, and output swing remains functional down to within ~50 mV of GND. While some AC parameters (e.g., unity-gain bandwidth) decrease slightly versus 5 V operation, the core DC precision - including 5 mV max VIO and sub-pA bias current - remains guaranteed across the full 3–16 V range.

How does the TLC27L4ACN handle ESD during PCB assembly?

The TLC27L4ACN incorporates internal ESD-protection circuitry qualified to 2000 V per MIL-STD-883C Method 3015.2. This allows safe handling with standard ESD precautions (wrist strap, grounded workstation), but does not eliminate the need for care: exposure to ESD events above rating may degrade parametric performance, especially input offset voltage and bias current. TI recommends avoiding direct contact with pins and using ionized air blowers during reflow - consistent with best practices for LinCMOS™ devices.

Is the TLC27L4ACN pin-compatible with other TLC27Lx variants?

Yes, the TLC27L4ACN shares identical PDIP-14 pinout and electrical interface with all TLC27Lx quad op-amps, including TLC27L4CN, TLC27L4BCN, and TLC27L9CN. All variants use the same pin configuration (e.g., Pin 4 = VDD, Pin 11 = GND, Pin 1/2/3 = Ch1 IN+/IN–/OUT), enabling drop-in replacement for offset voltage grade upgrades - provided the target application operates within the respective temperature and supply ranges of each variant.