Texas Instruments TLC271IDR

Overview

TLC271IDR from Texas Instruments is a programmable low-power LinCMOS™ operational amplifier with bias-select capability, 2 mV max input offset voltage (–40°C to 85°C), 3.6 V/µs slew rate (high-bias mode), and rail-to-rail output swing down to the negative rail-enabling precision signal conditioning in battery-powered sensor interfaces and portable instrumentation.

For engineers reviewing the TLC271IDR datasheet, TLC271IDR pinout, TLC271IDR application, or TLC271IDR equivalent, key selection factors include its three-user-selectable bias modes (high/medium/low), ultra-low input bias current (0.6 pA typ), wide supply range (4 V to 16 V), and operation across –40°C to 85°C industrial temperature range.

Technical Context

The TLC271IDR implements a silicon-gate LinCMOS™ process enabling high input impedance (10¹² Ω typ) and exceptional offset voltage stability (0.1 µV/month drift). Its bias-select architecture uses an external voltage applied to the BIAS SELECT pin to configure internal current sources for trade-offs among slew rate (3.6 V/µs), noise (25 nV/√Hz), and power dissipation (3.4 mW in high-bias mode).

It supports single-supply operation with common-mode input voltage extending below the negative rail (–0.2 V at VDD = 5 V), and features ESD protection rated to 2000 V (MIL-STD-883C, Method 3015.2). The device exhibits latch-up immunity and operates reliably under surge currents up to –100 mA at inputs/outputs.

Key Specifications

Pinout & Package

Package: SOIC-8 (D package), tape-and-reel (R suffix), 1.27 mm pitch, JEDEC MS-012AC compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC272IDR, the TLC271IDR offers single-channel optimization and lower total system power in discrete gain stages; versus TLV2462IDR, it provides unique bias-select adaptability at the cost of slightly higher VIO tolerance and more complex bias network design.

Availability

TLC271IDR is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable instrumentation, and analog front-end designs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLC271IDR 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 for industrial, automotive, and personal electronics markets.

The TLC271IDR belongs to TI's LinCMOS™ precision op-amp family, designed specifically for applications demanding low power, high input impedance, and stable DC performance in harsh environments.

FAQ

What is the maximum input offset voltage specification for TLC271IDR over its full operating temperature range?

The TLC271IDR has a maximum input offset voltage of 2 mV across its specified operating temperature range of –40°C to 85°C. This value is confirmed in the "ELECTRICAL CHARACTERISTICS" table for TLC271I/TLC271AI/TLC271BI devices under high-bias mode conditions at VDD = 5 V and full temperature range. The TLC271IDR is the I-suffix variant, making this 2 mV limit directly applicable to the TLC271IDR.

How does the BIAS SELECT pin function on the TLC271IDR, and what voltage levels correspond to each mode?

The BIAS SELECT pin on the TLC271IDR configures internal bias current to set performance mode: GND selects low-bias (50 µW, 0.03 V/µs), VDD/2 selects medium-bias (525 µW, 0.4 V/µs), and VDD selects high-bias (3.4 mW, 3.6 V/µs). These relationships are defined in Figure 1 and Table 1 of the TLC271 datasheet (SLOS090D), and apply identically to the TLC271IDR as an I-suffix device.

Does the TLC271IDR support true rail-to-rail input operation, or only output swing?

The TLC271IDR supports rail-to-rail *output* swing (down to GND and within 0.2 V of VDD), but its input common-mode range extends only to –0.2 V below GND - not full rail-to-rail input. This is explicitly stated in the "RECOMMENDED OPERATING CONDITIONS" table for I-suffix devices (VDD = 5 V: VICR = –0.2 V to 3.5 V), confirming that the negative rail is exceeded by 0.2 V, not reached exactly. The TLC271IDR does not have rail-to-rail input capability.

What package type and compliance standards apply to the TLC271IDR?

The TLC271IDR is supplied in an SOIC-8 (D) package, RoHS-compliant and lead-free per TI's packaging standards. It is available in tape-and-reel format (indicated by the "R" suffix), and meets JEDEC MS-012AC mechanical specifications. The device is rated for reflow soldering at 260°C for 10 seconds at 1.6 mm from the case, as documented in the "ABSOLUTE MAXIMUM RATINGS" section of the datasheet.

Can the TLC271IDR be used in single-supply configurations with AC-coupled inputs?

Yes, the TLC271IDR is explicitly designed for single-supply operation, including AC-coupled inputs. Its common-mode input range extends below GND (–0.2 V at VDD = 5 V), and its output swings fully to GND. When AC-coupling, a bias network must be added to establish proper DC operating point at IN+ and IN–, typically using resistive dividers referenced to VDD/2 - a configuration validated in the "Bias Selection for Single-Supply Applications" section (Figure 1) of the TLC271 datasheet for the TLC271IDR.