Texas Instruments TLC272CPSG4

Overview

TLC272CPSG4 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 - used in sensor signal conditioning, industrial analog front-ends, and low-power data acquisition systems.

For engineers reviewing the TLC272CPSG4 datasheet, TLC272CPSG4 pinout, TLC272CPSG4 application, or TLC272CPSG4 equivalent, key selection criteria include input offset voltage grade (C-suffix = 10 mV), SOIC-8 package compatibility, single-supply common-mode range extending below ground, and low bias current (<60 pA) enabling high-impedance transducer interfacing without guard-ring degradation.

Technical Context

The TLC272CPSG4 uses a polysilicon-gate CMOS process to achieve ultra-high input impedance (>10¹² Ω) and low input bias current (10–60 pA), minimizing loading on high-Z sources like piezoelectric sensors and pH electrodes. Its input stage supports common-mode voltages down to –0.1 V (at VDD = 5 V), enabling true single-supply operation without level-shifting circuitry.

Internally, it integrates ESD protection and latch-up immunity, with dual amplifiers sharing a single 1.12–3.2 mA supply current (VDD = 5 V). The device exhibits 65–80 dB CMRR and 65–120 dB PSRR across temperature, supporting stable DC-coupled gain stages in noisy industrial environments.

Key Specifications

Pinout & Package

Package: SOIC-8 (D package), 4.9 mm × 6.0 mm body, 1.27 mm pitch, surface-mount.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC272CPSG4, TLV272IDR offers tighter offset control at modest power penalty, while LMV358IDR trades noise and bandwidth for cost and input rail-to-rail capability - making TLC272CPSG4 optimal for legacy-compatible, low-noise, single-supply precision amplification where 10 mV VIO is acceptable.

Availability

TLC272CPSG4 is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable medical devices, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLC272CPSG4 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 delivering analog and embedded processing solutions, with leadership in precision analog ICs and industrial-grade reliability.

The TLC272 product line was designed for cost-effective, single-supply precision amplification in industrial, medical, and test equipment - emphasizing low power, high input impedance, and robust ESD tolerance without requiring external trimming.

FAQ

What is the maximum operating temperature range for the TLC272CPSG4?

The TLC272CPSG4 is rated for 0°C to 70°C ambient operation per its C-suffix designation. Absolute maximum junction temperature is 150°C, but sustained operation above 70°C requires derating supply current and verifying thermal dissipation in the final PCB layout. The device's electrical characteristics - including input offset voltage drift (0.3 µV/°C) and CMRR - are guaranteed only within the 0°C–70°C range specified in the datasheet.

Does the TLC272CPSG4 support rail-to-rail input operation?

No, the TLC272CPSG4 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 V at 25°C, but it does not reach the positive rail. This design enables true single-supply use with ground-referenced inputs while maintaining CMOS input stage integrity. For rail-to-rail input capability, consider alternatives such as the TLV272IDR or LMV358IDR.

Can the TLC272CPSG4 drive capacitive loads directly?

The TLC272CPSG4 is stable with capacitive loads up to 20 pF as verified in the datasheet's typical characteristics (B1 = 4.5 MHz, φm = 60°). Driving larger capacitive loads (e.g., >100 pF) risks peaking or oscillation and requires isolation resistance (e.g., 100 Ω in series with the output) or feedback compensation. Always verify stability under actual load conditions using scope-based step-response testing before finalizing the TLC272CPSG4 design.

What is the typical input bias current of the TLC272CPSG4 at 25°C?

The typical input bias current of the TLC272CPSG4 is 10 pA at 25°C, with a maximum of 60 pA across the full 0°C–70°C operating range. This ultra-low value results from its polysilicon-gate CMOS process and enables accurate amplification of signals from high-impedance sources such as piezoelectric sensors, pH electrodes, and photodiodes - provided PCB guard rings and clean layout practices suppress board-level leakage.

Is the TLC272CPSG4 pin-compatible with other TLC272 variants?

Yes, the TLC272CPSG4 is pin-compatible with all TLC272 family members in SOIC-8 (D) package, including TLC272ACPSG4, TLC272BCPSG4, and TLC272IPSRE4. Differences lie solely in input offset voltage grade (10 mV, 5 mV, 2 mV, and 10 mV respectively) and temperature range (C-suffix = 0°C–70°C, I-suffix = –40°C–85°C). No PCB changes are needed when substituting within the same package variant.