Texas Instruments TLC25L4BCN

Overview

TLC25L4BCN from Texas Instruments is a LinCMOS™ quad operational amplifier optimized for ultra-low-power, single-supply operation in battery-powered and energy-constrained systems. It delivers 2-mV max input offset voltage, 40–92 µA typical supply current (4 amplifiers), rail-to-rail common-mode input down to the negative rail, and operates from 1.4 V to 16 V. It is used in precision sensor signal conditioning for portable medical devices.

For engineers reviewing the TLC25L4BCN datasheet, TLC25L4BCN pinout, TLC25L4BCN application, or TLC25L4BCN equivalent, key selection criteria include its low bias current (1 pA typ), wide supply range, true single-supply capability, and guaranteed 2-mV V_IO grade - critical for high-impedance transducer interfaces and low-voltage analog front-ends.

Technical Context

The TLC25L4BCN implements a silicon-gate LinCMOS™ process enabling stable input-offset voltage with minimal drift (1 µV/°C typ), extremely high input impedance (>10¹² Ω), and near-zero input bias/offset currents (1 pA typ). Its architecture supports unity-gain stability and true single-supply operation with common-mode input extending to VDD–/GND.

It belongs to the TLC25x4 low-bias variant family, distinct from medium- and high-bias versions (TLC25M4/TLC254) by its 40–92 µA total supply current and 0.03–0.05 V/µs slew rate. Input stage design enables operation at 1.4 V while maintaining usable gain (AVD ≥ 50 V/mV at VDD = 5 V, RL = 1 MΩ).

Key Specifications

Pinout & Package

Package: 14-pin Plastic DIP (N package), through-hole mounting, 0°C to 70°C operating temperature range.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC25L4ACN, the TLC25L4BCN offers 2.5× tighter input offset control at identical power and package; versus LPV521MUTX, it delivers integrated quad functionality in DIP-14 but consumes ~100× more quiescent current - making it optimal for cost-sensitive, moderate-precision, through-hole assembled systems.

Availability

TLC25L4BCN is available at Aetrix Electronics and suitable for portable medical diagnostics, environmental monitoring, and energy-harvesting IoT endpoints requiring stable component supply across long product lifecycles.

Supply support for TLC25L4BCN 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 and embedded processing technologies, with decades of heritage in precision op-amps and low-power design.

The TLC25x4 series was developed specifically for battery-powered instrumentation requiring rail-to-rail input, ultra-low bias current, and operation below 2 V - targeting portable test equipment, sensor modules, and medical wearables.

FAQ

What is the maximum supply voltage rating for the TLC25L4BCN?

The absolute maximum supply voltage for the TLC25L4BCN is 18 V, as specified in the Absolute Maximum Ratings table. However, the recommended operating range is 1.4 V to 16 V. Exceeding 16 V may compromise long-term reliability or parametric performance, even if no immediate failure occurs. Always observe derating guidelines for elevated ambient temperatures.

Does the TLC25L4BCN support true rail-to-rail output swing?

No, the TLC25L4BCN does not provide rail-to-rail output swing. Its output voltage swing is limited - for example, at VDD = 5 V and RL = 1 MΩ, VOH is typically 3.2–4.1 V and VOL is 0–50 mV. The device features rail-to-rail *input* common-mode range (including VDD–/GND), but output swing remains within ~0.5 V of each rail under typical loads.

Can the TLC25L4BCN be used in a single-supply 1.5-V battery application?

Yes, the TLC25L4BCN is explicitly characterized for operation down to 1.4 V and is routinely used with single 1.5-V alkaline or silver-oxide cells. At 1.5 V, it maintains functional gain (AVD ≥ 10 V/mV), common-mode input range including ground, and 40–68 µA supply current - making it among the lowest-voltage operational quad op-amps qualified for production use.

How does the input offset voltage drift over temperature for the TLC25L4BCN?

The TLC25L4BCN exhibits an average input offset voltage temperature coefficient of 1 µV/°C (typical) over 25°C to 70°C, as confirmed in the electrical characteristics tables for VDD = 5 V and 10 V. This low drift ensures minimal additional error beyond the 2-mV max initial offset - for example, adding only ~35 µV over a 35°C ambient shift.

Is the TLC25L4BCN pin-compatible with other TLC25x4 variants like TLC25L4CN or TLC25M4BCN?

Yes, all TLC25x4 variants in the N-package (including TLC25L4CN, TLC25L4ACN, TLC25L4BCN, TLC25M4BCN, and TLC254BCN) share identical 14-pin DIP pinouts and footprint. Differences lie solely in internal biasing (affecting supply current, slew rate, and bandwidth), input offset grade (2/5/10 mV), and input stage optimization - allowing drop-in substitution where performance margins permit.