Texas Instruments TLC27M4CN

Overview

TLC27M4CN from Texas Instruments is a LinCMOS™ precision quad operational amplifier optimized for low-power, rail-to-rail output (negative rail inclusive), high-input-impedance (6 TΩ typ) signal conditioning in 0°C to 70°C industrial environments. It delivers ±300 µV max input offset voltage at 25°C, ±0.6 µV/°C drift, 32 nV/√Hz input noise at 1 kHz, and operates from 3 V to 16 V supply with 120 µA typical quiescent current per two amplifiers - ideal for multiplexed data-acquisition front-ends.

For engineers reviewing the TLC27M4CN datasheet, TLC27M4CN pinout, TLC27M4CN application, or TLC27M4CN equivalent, this device is selected for precision analog signal chains requiring stable DC accuracy, wide common-mode range (–0.2 V to 3.5 V at 5 V supply), and ESD-protected operation in space-constrained PDIP-14 layouts.

Technical Context

The TLC27M4CN uses LinCMOS™ process technology to combine MOSFET input-stage advantages - ultra-low bias current (±10 pA typ), 6 TΩ input impedance, and rail-inclusive common-mode range - with bipolar-like speed (1.1 MHz unity-gain bandwidth, 0.5 V/µs slew rate) and precision trimming (±300 µV V_IO max).

Its architecture supports single-supply operation down to 3 V with output swing to negative rail, low 120 µA supply current per two op-amps, and built-in latch-up immunity and ESD protection - enabling direct interface with microcontroller ADCs and sensor signal conditioning without level-shifting.

Key Specifications

Pinout & Package

Package: PDIP-14 (Plastic Dual In-line Package), 19.3 mm × 6.35 mm, through-hole mount.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC27M4CD and TLC27M4ACN, the TLC27M4CN provides the lowest initial offset in through-hole form factor, making it optimal for prototyping, legacy board upgrades, and applications requiring manual soldering or mechanical robustness without sacrificing precision.

Availability

TLC27M4CN is available at Aetrix Electronics and suitable for multiplexed data-acquisition systems, programmable logic controllers, and analog input/output modules requiring stable component supply across industrial temperature ranges and long-lifecycle designs.

Supply support for TLC27M4CN 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 with emphasis on reliability, longevity, and industrial-grade qualification.

The TLC27Mxx family was designed specifically for precision analog signal conditioning in cost-sensitive industrial and instrumentation applications - balancing LinCMOS™ input performance with robustness and ease of use in single-supply systems.

FAQ

What is the maximum operating temperature range for the TLC27M4CN?

The TLC27M4CN is rated for 0°C to 70°C free-air operating temperature. This C-suffix grade is validated per datasheet Section 6.3 and Table 4-1 for use in commercial and industrial environments where ambient does not exceed 70°C. Operation beyond this range may result in degraded offset drift, CMRR, or output drive capability - always verify thermal margin in final layout.

Does the TLC27M4CN support true rail-to-rail input operation?

No, the TLC27M4CN does not support rail-to-rail input. Its common-mode input voltage range is specified as –0.2 V to 3.5 V at V_DD = 5 V (Section 6.3), meaning the inputs operate down to 0.2 V below ground but only up to 3.5 V - not to V_DD. However, its output does swing to the negative rail (GND), enabling single-supply operation with grounded references.

Can the TLC27M4CN drive a 10 kΩ load across its full temperature range?

Yes, the TLC27M4CN is characterized to drive 10 kΩ loads across 0°C to 70°C, as confirmed in Sections 6.4–6.7 (e.g., VOH/VOL test conditions specify RL = 10 kΩ). Output voltage swing remains within specification (e.g., VOL ≤ 50 mV, VOH ≥ 3.2 V at 5 V supply), and phase margin stays ≥60° - ensuring stability without external compensation.

How does the input bias current of the TLC27M4CN compare to bipolar op-amps?

The TLC27M4CN exhibits ±10 pA typical input bias current at 25°C - over six orders of magnitude lower than typical bipolar op-amps (e.g., LM324: ~45 nA). This enables high-impedance sensor interfacing (e.g., pH electrodes, photodiodes) without significant DC error or signal attenuation, a key advantage of its LinCMOS™ input stage.

Is the TLC27M4CN pin-compatible with other devices in the TLC27Mxx family?

Yes, all TLC27Mxx quad variants - including TLC27M4CN, TLC27M4CD, TLC27M4ACN, and TLC27M4BCN - share identical PDIP-14 or SOIC-14 pinouts per Figure 5-1 and Table 5-1. Pin functions (e.g., 1IN+, 1OUT, V_DD) are consistent across grades, allowing direct substitution in existing layouts when package type matches.