Texas Instruments TLC272BCDR

Overview

TLC272BCDR from Texas Instruments is a precision dual CMOS operational amplifier optimized for single-supply operation, featuring 2 mV input offset voltage (max), 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 - ideal for sensor signal conditioning in industrial instrumentation.

For engineers reviewing the TLC272BCDR datasheet, TLC272BCDR pinout, TLC272BCDR application, or TLC272BCDR equivalent, key selection criteria include its low-input-bias-current (<60 pA typ), high input impedance (>10¹² Ω), wide common-mode input range extending below ground, and SOIC-8 packaging compatible with automated PCB assembly.

Technical Context

The TLC272BCDR uses a polysilicon-gate CMOS process to achieve ultra-low input bias current and stable input offset voltage drift (0.3 µV/°C). Its input stage supports single-supply operation with common-mode voltage range from –0.1 V to VDD – 1 V at 25°C, and its output stage drives to within 50 mV of the negative rail under load.

This device belongs to the TLC27xx family of precision BiFET-alternative op-amps, offering four offset voltage grades. The "B" grade (TLC272B) specifies 2000 µV max input offset voltage at 25°C and 3000 µV max across full temperature range - balancing cost and precision for mid-tier analog signal chains.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV272IDR and OPA2333AIDR, the TLC272BCDR provides the broadest supply voltage range (3–16 V), highest CMRR (65 dB min), and lowest cost per channel among TI's precision dual CMOS op-amps - making it optimal for industrial analog I/O where voltage headroom and noise immunity are primary concerns.

Availability

TLC272BCDR is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable medical devices, and programmable logic controller analog modules requiring stable component supply across extended temperature and voltage ranges.

Supply support for TLC272BCDR 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 and embedded processing solutions, with over 50 years of op-amp innovation and manufacturing excellence.

The TLC27xx family was designed to replace legacy BiFET op-amps in cost-sensitive, medium-precision analog signal chains - emphasizing single-supply usability, low power, and robustness in industrial and instrumentation applications.

FAQ

What is the maximum input offset voltage specification for the TLC272BCDR?

The TLC272BCDR has a maximum input offset voltage of 2000 µV at 25°C and 3000 µV across the full 0°C to 70°C operating temperature range. This value is confirmed in Section 4.3 of the official TI datasheet SLOS091F and defines the worst-case DC error introduced by the device in precision amplification circuits. The TLC272BCDR's offset voltage is graded to the "B" level - positioned between the standard TLC272C (10 mV max) and high-precision TLC277C (500 µV max).

Does the TLC272BCDR support true rail-to-rail input operation?

No, the TLC272BCDR does not support rail-to-rail input. Its common-mode input voltage range extends to –0.1 V below the negative rail (GND) but only up to VDD – 1 V at 25°C (and VDD – 1.5 V at other temperatures). This means the upper input limit is constrained - for example, at 5 V supply, the max usable common-mode voltage is 4.0 V at 25°C. The device does provide rail-to-rail output swing down to GND, however, which is explicitly documented in the Electrical Characteristics tables.

What package type is used for the TLC272BCDR?

The TLC272BCDR is supplied in an SOIC-8 (Small Outline Integrated Circuit) package, designated as "D" in TI's packaging nomenclature. It measures 4.9 mm × 6.0 mm with 1.27 mm lead pitch and is qualified for surface-mount reflow assembly. This package is distinct from PDIP-8 (P), SOP-8 (PS), and TSSOP-8 (PW) variants offered for other TLC272x part numbers - the "DR" suffix in TLC272BCDR specifically denotes the SOIC-8 tape-and-reel configuration.

Can the TLC272BCDR operate from a 3.3 V supply?

Yes, the TLC272BCDR is fully specified to operate from a 3 V supply across the 0°C to 70°C temperature range, making it compatible with standard 3.3 V system rails. At 3.3 V, it maintains functional output swing (within 50 mV of GND), usable common-mode input range (–0.1 V to ~2.3 V), and 4.5 MHz unity-gain bandwidth. Performance parameters such as slew rate and output drive are derated versus 5 V operation but remain sufficient for low-speed signal conditioning and buffering tasks.

How does the input bias current of the TLC272BCDR compare to bipolar op-amps?

The TLC272BCDR exhibits typical input bias current of 10–60 pA - over six orders of magnitude lower than standard bipolar op-amps (e.g., LM358: ~45 nA). This ultra-low IIB enables high-impedance sensor interfacing (e.g., pH electrodes, piezoelectric transducers) and large-value resistor networks without introducing significant voltage errors or thermal drift. Unlike bipolar devices, the TLC272BCDR's input stage is CMOS-based, eliminating base-current-related offsets and enabling stable DC coupling in high-Z applications.