Texas Instruments TLC25M4CN

Overview

TLC25M4CN from Texas Instruments is a LinCMOS™ quad operational amplifier optimized for medium-bias, low-power, single-supply operation across 1.4 V to 16 V. It delivers 420–1120 µA typical supply current (4 amplifiers), 0.43 V/µs slew rate at 5 V, 525 kHz unity-gain bandwidth, and 2-mV max input offset voltage (B-grade) - enabling precision signal conditioning in battery-powered sensor interfaces and portable instrumentation.

For engineers reviewing the TLC25M4CN datasheet, TLC25M4CN pinout, TLC25M4CN application, or TLC25M4CN equivalent, key selection criteria include its rail-to-rail common-mode input range (extends to negative rail), ultra-low input bias current (≤60 pA), 70°C operating temperature limit, and compatibility with high-impedance transducer circuits requiring <3 mV offset error.

Technical Context

The TLC25M4CN implements a silicon-gate LinCMOS™ process to achieve stable input-offset voltages (2/5/10 mV grades), extremely high input impedance (>10¹² Ω), and sub-picoampere input bias/offset currents. Its architecture supports true single-supply operation with common-mode input voltage spanning the negative rail (GND).

It is internally compensated for unity-gain stability and features integrated ESD protection rated to 2000 V (MIL-STD-883C, Method 3015.1). The device operates across 0°C to 70°C and is characterized for 1.4 V minimum supply - making it suitable for energy-constrained applications where bipolar op-amps would draw excessive quiescent current.

Key Specifications

Pinout & Package

Package: 14-pin plastic DIP (N package), through-hole mount, 0°C to 70°C commercial temperature range.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad operational amplifier applications.

Compared with TLC25M4CN, TLC27M4CN offers lower input offset but sacrifices 1.4 V operation and increases quiescent current 2×; LM324N provides broader availability and lower unit cost but lacks rail-to-rail input, introduces larger DC errors, and cannot operate below 3 V - limiting use in modern energy-harvesting or single-cell systems.

Availability

TLC25M4CN is available at Aetrix Electronics and suitable for portable instrumentation, environmental sensing, medical wearables, and solar-powered IoT edge nodes requiring stable component supply across extended product lifecycles.

Supply support for TLC25M4CN 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 op-amp innovation and broad industrial qualification.

The TLC25x4 family was designed specifically for low-power, single-supply precision analog signal conditioning in battery-constrained and energy-harvesting applications - emphasizing rail-to-rail input, pA-level bias current, and 1.4 V operability.

FAQ

What is the minimum supply voltage for reliable operation of the TLC25M4CN?

The TLC25M4CN is fully specified to operate down to 1.4 V across the 0°C to 70°C temperature range. At this voltage, it maintains functional gain, common-mode input range including GND, and stable unity-gain performance - verified per SLOS003G datasheet Section 4 (Recommended Operating Conditions). Below 1.4 V, parameters such as slew rate and output swing degrade nonlinearly.

Does the TLC25M4CN support rail-to-rail input operation?

Yes, the TLC25M4CN supports rail-to-rail input common-mode voltage range that includes the negative rail (GND/VDD–). As confirmed in the "Recommended Operating Conditions" table (Section 4), the common-mode input voltage extends to –0.2 V at VDD = 5 V and to 0 V at VDD = 1.4 V - enabling direct interface with ground-referenced sensors without external level-shifting circuitry.

What is the maximum input offset voltage specification for the TLC25M4CN?

The TLC25M4CN is a B-grade device with a maximum input offset voltage (VIO) of 2 mV at 25°C and 3 mV across the full 0°C to 70°C operating range, as documented in the "Electrical Characteristics" tables for TLC25M4BC (Section 12). This value applies under standard test conditions: VO = 1.4 V, RS = 50 Ω, RL = 100 kΩ.

Can the TLC25M4CN drive capacitive loads directly?

The TLC25M4CN is internally compensated for unity-gain stability with resistive loads, but driving capacitive loads >100 pF may cause peaking or oscillation. Per Figure 1 and associated test conditions in the datasheet, stability testing used CL = 20 pF with RL = 100 kΩ. For larger capacitive loads, an isolation resistor (e.g., 100 Ω) in series with the output is recommended to maintain phase margin ≥39°.

Is the TLC25M4CN pin-compatible with other devices in the TLC25x4 family?

Yes, all TLC25x4 variants - including TLC254CN, TLC25L4CN, and TLC25M4CN - share identical 14-pin DIP (N) pinouts and electrical pin functions. Differences lie solely in internal biasing (affecting supply current, slew rate, and bandwidth), input offset voltage grading (C/A/B suffixes), and noise performance - not in physical or logical connectivity.