Texas Instruments TLC271AID

Overview

TLC271AID from Texas Instruments is a programmable low-power LinCMOS™ operational amplifier in an 8-pin SOIC package, featuring bias-select mode (high/medium/low), 2 mV max input offset voltage at 25°C, 3.6 V/µs slew rate in high-bias mode, and rail-to-rail output swing down to the negative rail-designed for precision transducer interfacing and battery-powered sensor signal conditioning.

For engineers reviewing the TLC271AID datasheet, TLC271AID pinout, TLC271AID application, or TLC271AID equivalent, this page delivers verified electrical characteristics, bias-mode tradeoff guidance, thermal performance across –40°C to 85°C, and real-world design considerations for single-supply analog front-ends requiring low power and high input impedance.

Technical Context

The TLC271AID implements a silicon-gate LinCMOS™ process enabling 10¹² Ω typical input impedance and sub-picoampere input bias current, with three user-programmable bias modes selected via the BIAS SELECT pin. Each mode sets distinct ac performance: high-bias delivers 3.6 V/µs slew rate and 25 nV/√Hz noise; medium-bias reduces power to 0.5 mW while retaining 0.4 V/µs slew rate; low-bias achieves 50 µW dissipation with 0.03 V/µs and 68 nV/√Hz.

Its common-mode input voltage range extends below the negative rail (–0.2 V at VDD = 5 V), supporting true single-supply operation. Input offset voltage drift is typically 0.1 µV/month, and large-signal differential gain reaches 480 V/mV in low-bias mode-enabling stable dc-coupled amplification without external trimming.

Key Specifications

Pinout & Package

Package: 8-pin SOIC (D package), surface-mount, tape-and-reel compatible.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC271BID, the TLC271AID trades 0.5 mV higher initial offset for identical temperature stability and bias flexibility; versus TLV2461IDR, it offers wider supply range and selectable performance modes at the cost of higher minimum supply voltage and no rail-to-rail input.

Availability

TLC271AID is available at Aetrix Electronics and suitable for transducer interfacing, battery-powered sensor nodes, active filter stages, and analog computing blocks requiring stable component supply across industrial and automotive temperature ranges.

Supply support for TLC271AID 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 and long-term product support.

The TLC271 family belongs to TI's precision LinCMOS™ op-amp portfolio, engineered for applications demanding low power, high input impedance, and programmable performance-especially in single-supply sensor signal chains and portable instrumentation.

FAQ

What is the maximum supply voltage for the TLC271AID?

The TLC271AID supports a maximum supply voltage of 16 V across its rated operating temperature range of –40°C to +85°C. Absolute maximum rating is 18 V, but continuous operation above 16 V is not recommended per datasheet specifications. This 4–16 V range enables compatibility with both 5 V logic systems and 12 V industrial rails, and the device maintains specified performance-including input common-mode range and output swing-across the full span. The TLC271AID must not be operated beyond 16 V in normal use to ensure parametric compliance and long-term reliability.

How does the BIAS SELECT pin function on the TLC271AID?

The BIAS SELECT pin on the TLC271AID determines operating mode: grounding it selects low-bias (50 µW), connecting to VDD/2 selects medium-bias (0.5 mW), and tying to VDD selects high-bias (3.4 mW). This pin directly configures internal current sources to trade off power consumption against slew rate, noise, and bandwidth. For example, in high-bias mode, the TLC271AID achieves 3.6 V/µs slew rate and 25 nV/√Hz input noise; in low-bias, it drops to 0.03 V/µs and 68 nV/√Hz. No external components are required-only a clean DC voltage level at the pin.

Does the TLC271AID support true single-supply operation?

Yes, the TLC271AID supports true single-supply operation with a common-mode input voltage range extending to –0.2 V below GND (at VDD = 5 V) and rail-to-rail output swing down to GND. This allows direct interface with ac-coupled or bipolar sensors without level-shifting circuitry. Its input stage operates correctly with inputs at or slightly below ground potential, and the output can drive fully to GND under 10 kΩ load. Combined with 4–16 V supply flexibility, this makes the TLC271AID suitable for battery-powered systems where generating a negative rail is impractical.

What is the input offset voltage specification for the TLC271AID?

The TLC271AID has a maximum input offset voltage of 2 mV at 25°C, with typical drift of 0.1 µV/month and 1.8 µV/°C average temperature coefficient over –40°C to +85°C. This grade places it between the standard TLC271 (10 mV) and precision TLC271B (2 mV) variants-making it appropriate for moderate-accuracy applications such as industrial sensor conditioning where trimming is optional. The datasheet confirms this 2 mV limit applies specifically to the "I-suffix" devices (like TLC271AID) across their full temperature range, and the LinCMOS™ process ensures superior long-term stability compared to metal-gate alternatives.

Is the TLC271AID pin-compatible with other TLC271 variants?

Yes, the TLC271AID is pin-compatible with all D-package TLC271 family members-including TLC271CD, TLC271BID, and TLC271ID-as confirmed by identical 8-pin SOIC footprints and shared pin functions (OFFSET N1, IN–, IN+, GND, BIAS SELECT, VDD, OUT, OFFSET N2). No PCB layout changes are required when substituting within the same package type. However, functional differences exist: offset voltage grade (2 mV vs. 5 mV vs. 10 mV), temperature range (–40°C to +85°C for "I" suffix), and minor parameter shifts due to grading. Always verify bias-select behavior and supply voltage limits match the target application before drop-in replacement.