Texas Instruments TLC271MDR

Overview

TLC271MDR from Texas Instruments is a programmable low-power LinCMOS™ operational amplifier with bias-select functionality, 2 mV max input offset voltage (at 25°C), 1.7 MHz unity-gain bandwidth in high-bias mode, and operation across –55°C to 125°C. It supports single-supply operation down to 5 V, features rail-to-rail output swing to negative rail, and is used in precision sensor signal conditioning for aerospace telemetry systems.

For engineers reviewing the TLC271MDR datasheet, TLC271MDR pinout, TLC271MDR application, or TLC271MDR equivalent, key selection criteria include its military-grade temperature range, three-user-selectable bias modes (high/medium/low), input offset voltage drift of 0.1 µV/month, and compatibility with low-voltage remote sensing interfaces requiring ESD-hardened analog front-ends.

Technical Context

The TLC271MDR implements a silicon-gate LinCMOS™ process enabling 10¹² Ω typical input impedance and latch-up immunity. Its bias-select architecture uses an external voltage on the BIAS SELECT pin to configure internal current sources, directly setting slew rate (3.6 V/µs to 0.03 V/µs), noise density (25–68 nV/√Hz), and power dissipation (3375–50 µW) without changing external circuitry.

This device operates over 5 V to 16 V supply and supports common-mode input voltage extending below the negative rail-enabling direct interfacing with grounded-sensor configurations. Input offset voltage is specified at 10 mV max for the M-suffix grade, with 2.1 µV/°C tempco over –55°C to 125°C, and guaranteed performance under MIL-STD-883C ESD stress up to 2000 V.

Key Specifications

Pinout & Package

Package: SOIC-8 (D package), tape-and-reel (R suffix), 1.75 mm height, JEDEC MS-012AC compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA2333MDR and LMC6062IMX/NOPB, the TLC271MDR uniquely delivers military-grade temperature coverage, user-programmable ac performance/power trade-offs, and proven ESD robustness-making it optimal for cost-sensitive, field-deployed analog signal chains where configurability and ruggedness outweigh ultra-low drift requirements.

Availability

TLC271MDR is available at Aetrix Electronics and suitable for aerospace telemetry systems, engine control units, remote industrial sensor nodes, and structural health monitoring equipment requiring stable component supply across extended temperature extremes.

Supply support for TLC271MDR 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 company founded in 1930, specializing in analog ICs, embedded processors, and educational technology with over 80,000 active products.

The TLC271 family was designed for programmable precision analog signal conditioning in resource-constrained, wide-temperature environments-targeting military, avionics, and industrial control applications where fixed-function op-amps lack adaptability.

FAQ

What is the maximum input offset voltage specification for TLC271MDR over its full temperature range?

The TLC271MDR has a maximum input offset voltage of 12 mV across its full operating range of –55°C to 125°C, as confirmed in the "electrical characteristics" table for high-bias mode on page 8 of the SLOS090D datasheet. This value applies under VDD = 5 V or 10 V conditions with RL = 10 kΩ, and reflects worst-case unit variation including temperature-induced drift. The 10 mV limit at 25°C expands to 12 mV at temperature extremes due to the 2.1 µV/°C average tempco.

Can TLC271MDR operate from a single 5-V supply while accepting input signals below ground?

Yes, the TLC271MDR supports true single-supply operation from 5 V and accepts common-mode input voltages down to 0 V (GND) - and further to –0.2 V at 25°C per the VICR specification on page 6. This allows direct interfacing with grounded sensors such as thermocouples or bridge transducers without level-shifting circuitry. The device's LinCMOS™ input stage enables this extended common-mode range while maintaining 10¹² Ω input impedance.

How does the BIAS SELECT pin configure operating modes on TLC271MDR?

The BIAS SELECT pin on TLC271MDR sets one of three bias levels: connecting to GND selects low-bias mode (50 µW, 0.03 V/µs), to VDD/2 selects medium-bias (525 µW, 0.4 V/µs), and to VDD selects high-bias (3375 µW, 3.6 V/µs). This is implemented via internal current-source switching, as shown in Figure 1 and Table 1 of the SLOS090D datasheet. No external resistors are needed beyond a simple voltage divider for medium-bias in single-supply systems.

Is TLC271MDR pin-compatible with other devices in the TLC271 family, such as TLC271BCD?

Yes, TLC271MDR shares identical SOIC-8 (D) package pinout and footprint with all TLC271x variants including TLC271BCD, TLC271ACP, and TLC271ID - confirmed by the "D, JG, OR P PACKAGE (TOP VIEW)" diagram on page 1 of SLOS090D. All variants use Pins 1–8 for OFFSET N1, IN–, IN+, GND, BIAS SELECT, VDD, OUT, and OFFSET N2 respectively. This allows drop-in replacement across temperature grades without PCB modification.

What is the guaranteed ESD protection level for TLC271MDR, and how is it verified?

The TLC271MDR incorporates internal ESD-protection circuits validated to withstand 2000 V human-body-model (HBM) stress, as tested per MIL-STD-883C, Method 3015.2 - explicitly stated in the "description" section on page 2 of the SLOS090D datasheet. This rating applies to all pins including IN+, IN–, and BIAS SELECT. Functional failure is prevented at this level, though parametric degradation may occur with repeated exposure, so standard ESD handling protocols remain recommended during assembly.