Texas Instruments TLC274AIDR

Overview

TLC274AIDR from Texas Instruments is a precision quad CMOS operational amplifier optimized for single-supply operation, featuring 5 mV max input offset voltage (25°C), 10.8 nV/√Hz input voltage noise at 1 kHz, and rail-to-rail output swing down to the negative rail. It operates from 4 V to 16 V over –40°C to 85°C and delivers 4.5 MHz unity-gain bandwidth with 0.5 V/μs slew rate - enabling high-fidelity signal conditioning in low-power sensor interfaces and industrial analog front-ends.

For engineers reviewing the TLC274AIDR datasheet, TLC274AIDR pinout, TLC274AIDR application, or TLC274AIDR equivalent, key selection considerations include its guaranteed 5 mV offset grade (A-suffix), SOIC-14 package compatibility, single-supply common-mode range extending below ground, and low bias current (<60 pA) critical for high-impedance transducer amplification.

Technical Context

The TLC274AIDR uses a polysilicon-gate CMOS process to achieve ultra-high input impedance (>10¹² Ω), low input bias current (10–60 pA), and stable offset voltage drift (0.3 µV/°C). Its input stage supports common-mode voltages down to –0.1 V (at VDD = 5 V), while the output stage drives to within 50 mV of GND and 0.05 V of VDD under 10 kΩ load.

Designed for precision DC-coupled and low-frequency AC applications, it provides 80 dB typical CMRR and PSRR across temperature, with 60° phase margin ensuring stability in unity-gain configurations. The device avoids latch-up and integrates ESD protection, making it suitable for ruggedized industrial signal chains without external clamping.

Key Specifications

Pinout & Package

Package: SOIC-14 (D package), 8.65 mm × 6.00 mm body, surface-mount, JEDEC MS-012AC compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2464AIDR and OPA4340UA/2K5, the TLC274AIDR offers broader supply range (4–16 V), extended temperature operation (–40°C to 85°C), and proven latch-up immunity - making it the robust choice for industrial and automotive analog signal chains where reliability trumps marginal DC spec improvements.

Availability

TLC274AIDR is available at Aetrix Electronics and suitable for industrial sensor interfaces, medical front-ends, and automotive cabin sensing requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for TLC274AIDR 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-amps and industrial-grade signal chain solutions.

The TLC27xx family was engineered for cost-effective, high-reliability precision amplification in single-supply industrial and automotive systems - emphasizing latch-up immunity, wide voltage range, and stable DC performance over temperature.

FAQ

What is the maximum operating temperature range for the TLC274AIDR?

The TLC274AIDR is rated for operation from –40°C to +85°C, matching the I-suffix specification. This extended temperature range supports deployment in automotive under-hood modules, industrial PLCs, and outdoor environmental sensors where ambient extremes are expected. The device maintains specified offset voltage, CMRR, and output swing across this full range.

Does the TLC274AIDR support true rail-to-rail input?

No, the TLC274AIDR does not support rail-to-rail input. Its common-mode input voltage range extends to –0.1 V below GND and up to VDD – 1.5 V at temperatures other than 25°C. While it accepts inputs below ground (enabling true single-supply operation), the upper limit remains ~1.5 V below VDD - unlike modern RRO input op-amps. This is confirmed in Section 4.2 Recommended Operating Conditions.

How does the input offset voltage of TLC274AIDR compare to TLC274IDR?

The TLC274AIDR guarantees a maximum input offset voltage of 5 mV at 25°C, whereas the TLC274IDR (standard grade) is rated at 10 mV max. Both share the same 0.3 µV/°C drift coefficient and operate over –40°C to 85°C, but the "A" suffix denotes tighter initial offset - critical for untrimmed 12-bit measurement systems where offset error dominates total error budget.

Can the TLC274AIDR drive capacitive loads directly?

The TLC274AIDR is stable with capacitive loads up to 20 pF, as verified by phase margin testing (60° at unity gain). Driving larger capacitive loads (e.g., >100 pF cables or ADC input capacitance) requires isolation via a series resistor (≥100 Ω) or a dedicated buffer stage to prevent peaking or oscillation. This limitation is documented in Section 4.7 Operating Characteristics.

Is the TLC274AIDR pin-compatible with other TLC27xx variants in SOIC-14?

Yes, the TLC274AIDR is fully pin-compatible with TLC274IDR, TLC274CDR, TLC274BIDR, and TLC279IDR in the SOIC-14 (D) package. All share identical pin configuration (Table 3-1), thermal pad absence, and footprint dimensions (8.65 mm × 6.00 mm), allowing drop-in substitution within the same temperature and offset grade constraints.