Texas Instruments TLC27L4AIN

Overview

TLC27L4AIN from Texas Instruments is a precision quad operational amplifier using LinCMOS™ technology, designed for low-power, single-supply sensor signal conditioning. It delivers 10 mV max input offset voltage (25°C), ultra-low 195 µW quiescent power at 5 V, and rail-to-rail output swing with common-mode input range extending below ground. It is used in battery-powered field transmitters including pressure, temperature, and level sensing systems.

For engineers reviewing the TLC27L4AIN datasheet, TLC27L4AIN pinout, TLC27L4AIN application, or TLC27L4AIN equivalent, key selection criteria include its 0.1 µV/month offset drift, –40°C to +85°C industrial temperature rating, 10¹² Ω input impedance, and compatibility with 4–16 V supply rails in remote analog front-end designs.

Technical Context

The TLC27L4AIN employs silicon-gate LinCMOS™ process to achieve superior offset stability over metal-gate alternatives, with input offset voltage drift of just 0.1 µV/month including first 30 days. Its input stage supports single-supply operation with common-mode voltage down to –0.2 V (at VDD = 5 V) and output swing to negative rail.

It integrates ESD protection rated to 2000 V (MIL-STD-883C, Method 3015.2) and exhibits latch-up immunity. Electrical performance is specified across –40°C to +85°C (I-suffix), with supply current as low as 29 µA at 85°C and 5 V, enabling long-life operation in unattended sensor nodes.

Key Specifications

Pinout & Package

The TLC27L4AIN is housed in a 14-pin PDIP (Plastic Dual In-line Package) with 0.300-inch body width, suitable for through-hole prototyping and legacy industrial PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC27L4CDR and TLV2464IDR, the TLC27L4AIN offers the lowest power and best offset stability over extended temperature, making it optimal for long-life, wide-range industrial sensor interfaces - not for high-speed or commercial-only use cases.

Availability

TLC27L4AIN is available at Aetrix Electronics and suitable for pressure transmitter design, temperature transmitter calibration, and smoke detector analog front-end development requiring stable component supply and long-term industrial lifecycle support.

Supply support for TLC27L4AIN 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 amp innovation.

The TLC27Lx family was engineered for ultra-low-power, high-precision analog signal conditioning in battery-operated and industrial sensor systems - emphasizing offset stability, rail-to-rail operation, and robustness across extended temperature ranges.

FAQ

What is the maximum operating temperature range for the TLC27L4AIN?

The TLC27L4AIN is characterized for operation from –40°C to +85°C, matching the I-suffix industrial temperature grade. This rating is validated per TI's SLOS053E datasheet Section 5.3, and applies across all electrical specifications including input offset voltage, supply current, and common-mode range. The device maintains 10 mV max VIO and 29 µA min IDD at 85°C under 5 V supply conditions. Thermal derating is not required within this range.

Does the TLC27L4AIN support true single-supply operation with inputs below ground?

Yes, the TLC27L4AIN supports true single-supply operation with common-mode input voltage extending to –0.2 V (at VDD = 5 V), as confirmed in Section 5.3 of the datasheet. This allows direct interfacing with grounded-referenced sensors without level-shifting circuitry. The input stage uses LinCMOS™ technology to enable this feature while maintaining 10¹² Ω input impedance and low bias current - critical for preserving accuracy in high-impedance sensor applications.

What is the typical supply current for the TLC27L4AIN at 5 V and 25°C?

The typical supply current for the TLC27L4AIN at 5 V and 25°C is 68 µA for all four amplifiers combined, per Section 5.4 Electrical Characteristics (I-suffix, VDD = 5 V). This equates to 195 µW total quiescent power, enabling multi-year operation on standard CR2032 coin cells in low-duty-cycle sensor nodes. Measured IDD remains stable across temperature, dropping to 29 µA at 85°C under same conditions.

Is the TLC27L4AIN pin-compatible with other TLC27Lx variants?

Yes, the TLC27L4AIN shares identical 14-pin PDIP pinout and function mapping with all TLC27Lx family members (e.g., TLC27L4CDR, TLC27L4BI, TLC27L9I), as defined in Table 4-1 and Figure 4-1 of the datasheet. All variants use the same pin numbering, terminal roles (e.g., Pin 4 = VDD, Pin 11 = GND), and channel assignment. However, electrical specs differ - only the TLC27L4AIN guarantees 10 mV VIO max and –40°C to +85°C operation in PDIP packaging.

What package type is used for the TLC27L4AIN?

The TLC27L4AIN is supplied in a 14-pin Plastic Dual In-line Package (PDIP) with 0.300-inch body width, designated by the 'N' suffix per TI's orderable information table. This through-hole package supports manual prototyping, legacy industrial PCBs, and applications requiring mechanical robustness and thermal mass. It is distinct from SOIC (D), SOP (NS), and TSSOP (PW) variants - no adapter or footprint conversion is needed when selecting the 'N' version.