Texas Instruments TLC272CPSR

Overview

TLC272CPSR from Texas Instruments is a precision dual CMOS operational amplifier optimized for single-supply operation, featuring 10 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 3 V to 16 V over 0°C–70°C and delivers 4.5 MHz unity-gain bandwidth with 0.5 V/μs slew rate - enabling high-fidelity signal conditioning in battery-powered sensor front-ends and industrial analog interfaces.

For engineers reviewing the TLC272CPSR datasheet, TLC272CPSR pinout, TLC272CPSR application, or TLC272CPSR equivalent, key selection criteria include its C-suffix grade offset voltage specification, PSOP-8 package compatibility with space-constrained PCB layouts, low-input-bias-current performance (<60 pA typical), and verified operation in single-supply transducer amplification circuits without level-shifting circuitry.

Technical Context

The TLC272CPSR uses a polysilicon-gate CMOS process to achieve ultra-high input impedance (>10¹² Ω) and sub-picoampere input bias current, enabling direct interfacing with high-impedance sources like piezoelectric sensors and pH electrodes. Its input common-mode range extends 0.1 V below the negative rail and up to VDD – 1 V at 25°C, supporting true ground-referenced sensing in 3 V–16 V systems.

Internally, it integrates ESD protection circuitry and latch-up immunity, with dual independent amplifiers sharing only supply rails. The device exhibits 65–80 dB common-mode rejection and 65–120 dB supply-voltage rejection across temperature, ensuring stable DC accuracy in noisy industrial environments where supply ripple and ground shifts are present.

Key Specifications

Pinout & Package

Package: PSOP-8 (SOP-8 variant with exposed pad; 6.2 mm × 7.8 mm footprint, 1.75 mm height). Pin 1 marked by notch or dot; standard SOIC pinout orientation applies.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC272CPSR, TLC272CDR offers identical precision performance in a smaller SOIC-8 footprint but lacks the PSOP-8's thermal pad; TLV2462IDR improves offset and bandwidth at the cost of higher supply current and reduced maximum supply voltage tolerance.

Availability

TLC272CPSR is available at Aetrix Electronics and suitable for medical sensor signal conditioning, industrial process transmitters, and portable data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLC272CPSR 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 headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with over 50 years of op-amp design heritage.

The TLC27xx family was developed to deliver BiFET-level precision and speed in CMOS technology - targeting cost-sensitive, single-supply industrial and instrumentation applications where low power, high input impedance, and rail-to-rail output are essential.

FAQ

What is the maximum operating temperature range for the TLC272CPSR?

The TLC272CPSR is specified for operation from 0°C to 70°C ambient temperature. This C-suffix grade does not support extended industrial or automotive temperature ranges; for –40°C to 85°C operation, the TLC272I variant must be selected. The absolute maximum junction temperature remains 150°C, but sustained operation above 70°C ambient violates the guaranteed electrical specifications in the datasheet.

Does the TLC272CPSR support true rail-to-rail input operation?

The TLC272CPSR does not provide rail-to-rail input common-mode range. Its input common-mode voltage range extends to –0.1 V (below ground) and up to VDD – 1 V at 25°C, meaning the upper limit is 1 V below the positive supply. For example, with a 5 V supply, inputs must stay within –0.1 V to 4 V. This allows ground-referenced inputs but excludes direct connection to VDD without attenuation or level shifting.

Can the TLC272CPSR drive capacitive loads without instability?

The TLC272CPSR is stable with capacitive loads up to 20 pF when driving a 10 kΩ load, as confirmed in the datasheet's typical characteristics. Driving larger capacitive loads (e.g., cables or ADC input capacitance >20 pF) requires isolation via a series resistor (≥100 Ω) between the output and the load to maintain phase margin ≥60° and prevent peaking or oscillation.

How does the input offset voltage drift affect long-term accuracy in precision applications?

The TLC272CPSR has a specified input offset voltage temperature coefficient of 0.3 μV/°C over 25°C–70°C. Over a 50°C ambient shift, this contributes ≤15 μV of additional offset error - negligible compared to its 10 mV max initial offset. Long-term drift is calculated at 0.1 μV/month, making the TLC272CPSR suitable for applications requiring stability over months rather than years without recalibration.

Is the PSOP-8 package of the TLC272CPSR pin-compatible with standard SOIC-8 footprints?

No, the PSOP-8 package of the TLC272CPSR is not pin-compatible with standard SOIC-8. While both have 8 leads and share identical pin functions and numbering, the PSOP-8 has a wider body (6.2 mm × 7.8 mm vs. 4.9 mm × 6 mm for SOIC-8) and includes an exposed thermal pad on the underside. PCB layout must use the PSOP-8 footprint - attempting to mount it in an SOIC-8 land pattern will result in misalignment and solder joint failure.