Texas Instruments TLC27M4CNSR

Overview

TLC27M4CNSR from Texas Instruments is a LinCMOS™ precision quad operational amplifier optimized for low-power, high-input-impedance analog signal conditioning in industrial and test equipment. It delivers ±300 µV max input offset voltage at 25°C, ±0.6 µV/°C drift, 32 nV/√Hz input noise at 1 kHz, rail-to-rail output swing to negative rail, and operates from 3 V to 16 V supply across 0°C to 70°C ambient.

For engineers reviewing the TLC27M4CNSR datasheet, TLC27M4CNSR pinout, TLC27M4CNSR application, or TLC27M4CNSR equivalent, key selection criteria include trimmed offset voltage stability over temperature, ultra-low quiescent current (120 µA per two amplifiers), high 6 TΩ input impedance, and compatibility with single-supply data-acquisition front-ends requiring wide common-mode range.

Technical Context

The TLC27M4CNSR uses LinCMOS™ process technology to achieve bipolar-like speed (1.1 MHz unity-gain bandwidth, 0.5 V/µs slew rate) while maintaining CMOS-level input bias currents (±10 pA typ) and ultra-low power consumption. Its architecture supports single-supply operation with common-mode input range extending to −0.2 V below ground and output swing to the negative rail.

It integrates ESD protection and latch-up immunity, enabling robust deployment in programmable logic controller I/O modules and motor control feedback paths where precision, noise immunity, and supply flexibility are critical. The device is specified for 0°C to 70°C operation and supports 3 V minimum supply-unlike higher-grade variants (e.g., TLC27M4I, TLC27M4M) rated for extended temperature ranges.

Key Specifications

Pinout & Package

Package: SOP-14 (NS), 10.3 mm × 5.3 mm body size with gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC27M4CDR, the TLC27M4CNSR offers a wider body (10.3 mm vs 8.65 mm) beneficial for manual rework and thermal dissipation in low-volume industrial boards; compared with TLC27M4ACNSR, it trades 200 µV higher max offset for lower unit cost while retaining identical noise, drift, and power performance.

Availability

TLC27M4CNSR is available at Aetrix Electronics and suitable for multiplexed data-acquisition systems, test and measurement equipment, and programmable logic controllers requiring stable component supply, long-term obsolescence management, and consistent parametric performance across production lots.

Supply support for TLC27M4CNSR 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 decades of heritage in precision analog ICs.

The TLC27Mxx family was designed specifically for industrial and instrumentation applications demanding low power, high input impedance, and stable DC performance - bridging the gap between general-purpose bipolar op-amps and ultra-low-power CMOS alternatives.

FAQ

What is the maximum operating supply voltage for the TLC27M4CNSR?

The TLC27M4CNSR has an absolute maximum supply voltage rating of 18 V, but its recommended operating range is 3 V to 16 V across the 0°C to 70°C ambient temperature range. Operation above 16 V risks exceeding safe dissipation limits and may degrade long-term reliability - always observe the derating curves in the datasheet's Section 6.2 for continuous operation at elevated temperatures.

Does the TLC27M4CNSR support true rail-to-rail input operation?

No, the TLC27M4CNSR does not support rail-to-rail input. Its common-mode input voltage range extends to −0.2 V (i.e., 0.2 V below GND) and up to VDD − 1.5 V at VDD = 5 V. While the output swings to the negative rail, the inputs require headroom - making it unsuitable for applications where input signals reach the positive supply rail without attenuation or level shifting.

Can the TLC27M4CNSR be used in a single-supply configuration with ground-referenced sensors?

Yes, the TLC27M4CNSR is explicitly designed for single-supply operation and supports ground-referenced sensors. Its input common-mode range includes −0.2 V, and its output swings to the negative rail (GND), allowing direct interfacing with sensors whose outputs are referenced to system ground - provided the sensor's output stays within the valid input voltage window and appropriate biasing is applied for AC-coupled or bipolar signals.

What is the typical supply current for the full quad amplifier in the TLC27M4CNSR?

The TLC27M4CNSR specifies supply current per two amplifiers: 120 µA typical at 25°C and VDD = 5 V. Therefore, the full quad draws approximately 240 µA under those conditions. This value increases to ~260 µA at 0°C and remains stable up to 70°C - confirming its suitability for low-power industrial monitoring nodes where total system current must remain below 1 mA.

How does the TLC27M4CNSR differ from the TLC27M4M variant?

The TLC27M4CNSR is rated for 0°C to 70°C operation with ±300 µV max offset, while the TLC27M4M supports −55°C to 125°C and has higher offset (1.1 mV max). The TLC27M4CNSR also features lower input bias current (±10 pA typ vs ±0.6 pA typ for TLC27M4M), higher unity-gain bandwidth (1.1 MHz vs 525 kHz), and faster slew rate (0.5 V/µs vs 0.43 V/µs) - making it better suited for room-temperature, higher-speed precision applications.