Texas Instruments TLC25L4ACNE4

Overview

TLC25L4ACNE4 from Texas Instruments is a LinCMOS™ quad operational amplifier optimized for ultra-low-power, single-supply operation across 1.4 V to 16 V. It delivers 5 mV max input offset voltage (A-grade), 40 µA typical supply current (four amplifiers), and rail-to-rail common-mode input range extending to the negative rail-enabling precision signal conditioning in battery-powered sensor interfaces and portable instrumentation.

For engineers reviewing the TLC25L4ACNE4 datasheet, TLC25L4ACNE4 pinout, TLC25L4ACNE4 application, or TLC25L4ACNE4 equivalent, key selection criteria include its 1 pA typical input bias current, 70 nV/√Hz input noise at 1 kHz (VDD = 5 V), unity-gain stability, and compatibility with high-impedance transducer circuits requiring minimal offset drift.

Technical Context

This device uses Texas Instruments' 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 true single-supply architecture supports operation down to 1.4 V while maintaining functional common-mode input range inclusive of ground.

The TLC25L4ACNE4 belongs to the low-bias variant (TLC25L4_C) within the TLC25x4 family, distinguishing it from medium-bias (TLC25M4) and high-bias (TLC254) versions by significantly lower quiescent current (40–92 µA vs. 420–1200 µA) and reduced slew rate (0.03–0.05 V/µs), trading speed for energy efficiency in DC-coupled, low-frequency applications.

Key Specifications

Pinout & Package

Package: 14-pin plastic DIP (N package), through-hole mounting, RoHS-compliant lead finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC25L4ACNE4, TLC25L4CN offers identical analog performance but lacks documented Pb-free compliance, while LPV521MUTX achieves nanowatt operation at the cost of channel count, layout complexity, and higher per-channel VIO-making TLC25L4ACNE4 optimal for cost-sensitive, quad-channel, low-voltage industrial sensing.

Availability

TLC25L4ACNE4 is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered sensor nodes, and energy-harvesting power management systems requiring stable component supply across long production lifecycles.

Supply support for TLC25L4ACNE4 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 expertise in precision op-amps and low-power design.

The TLC25L4ACNE4 belongs to TI's LinCMOS™ precision op-amp product line, engineered specifically for ultra-low-power, single-supply applications in portable, medical, and industrial sensing where input bias current and supply current are critical.

FAQ

What is the maximum operating temperature range for the TLC25L4ACNE4?

The TLC25L4ACNE4 is characterized for operation from 0°C to 70°C ambient temperature. This commercial-grade temperature range is specified in the SLOS003G datasheet and validated across all electrical parameters including input offset voltage, supply current, and common-mode rejection ratio. Operation outside this range may result in parametric degradation or undefined behavior. The device's absolute maximum junction temperature is 150°C, but sustained operation above 70°C ambient is not guaranteed.

Does the TLC25L4ACNE4 support true rail-to-rail output swing?

No, the TLC25L4ACNE4 does not provide rail-to-rail output swing. Its output voltage swing is limited to approximately 0.05 V above GND and up to 1.2 V below VDD under 10 kΩ load (per datasheet Figure 1 and electrical characteristics tables). For example, at VDD = 5 V, typical VOH is 3.8 V and VOL is 0.05 V. The "rail-to-rail" specification applies only to the input common-mode range-not the output stage-which remains a standard CMOS output structure with headroom limitations.

How does the TLC25L4ACNE4 differ from the TLC254ACNE4 in practical design?

The TLC25L4ACNE4 is the low-bias variant (40 µA supply current, 0.03 V/µs slew rate, 70 nV/√Hz noise), whereas TLC254ACNE4 is the high-bias version (4 mA supply current, 4.5 V/µs slew rate, 25 nV/√Hz noise). In practice, TLC25L4ACNE4 is selected for battery life and high-impedance DC precision, while TLC254ACNE4 suits higher-speed, lower-noise AC signal chains. They share identical pinout, package, and offset voltage grading (5 mV max), enabling functional substitution only when bandwidth and noise requirements permit the trade-off.

Can the TLC25L4ACNE4 drive capacitive loads directly?

The TLC25L4ACNE4 is stable at unity gain with purely resistive loads but exhibits degraded phase margin with capacitive loads >100 pF. Datasheet Figure 3 shows phase margin dropping to 30° at 70°C with CL = 20 pF and RL = 1 MΩ. For loads exceeding 50 pF, a series isolation resistor (100–500 Ω) between the output and capacitance is recommended to maintain stability. Driving long cables or ADC input capacitors without isolation may cause ringing or oscillation.

Is the TLC25L4ACNE4 pin-compatible with other devices in the TLC25x4 family?

Yes, all TLC25x4-series quad op-amps-including TLC25L4ACNE4, TLC25M4ACNE4, and TLC254ACNE4-are fully pin-compatible in the 14-pin DIP (N), SOIC (D), and TSSOP (PW) packages. Pin functions, numbering, and physical footprint are identical across variants. This allows direct substitution based on bias current, speed, and noise requirements without PCB modification-provided thermal and layout constraints (e.g., decoupling, grounding) accommodate the chosen variant's supply current and bandwidth.