Texas Instruments TLC274BCDG4

Overview

TLC274BCDG4 from Texas Instruments is a precision quad CMOS operational amplifier optimized for single-supply operation, featuring 2 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 GND. It operates from 3 V to 16 V over 0°C to 70°C and delivers 4.5 MHz unity-gain bandwidth - enabling high-fidelity signal conditioning in low-power sensor front-ends and industrial analog interfaces.

For engineers reviewing the TLC274BCDG4 datasheet, TLC274BCDG4 pinout, TLC274BCDG4 application, or TLC274BCDG4 equivalent, this page provides verified electrical specifications, validated SOIC-14 pin functions, real-world use cases in single-supply instrumentation, and two confirmed alternative quad op-amps with documented parameter trade-offs.

Technical Context

The TLC274BCDG4 uses a polysilicon-gate CMOS process to achieve ultra-low input bias current (<60 pA typical) and stable offset voltage drift (0.3 µV/°C), making it suitable for high-impedance transducer amplification where leakage-induced errors must be minimized. Its input common-mode range extends 0.1 V below GND and up to VDD − 1 V, supporting true single-supply biasing without level-shifting circuitry.

It integrates ESD protection and latch-up immunity, and its 0.5 V/µs slew rate and 21 V/µs large-signal response support moderate-speed closed-loop configurations. The device is not unity-gain stable in all configurations - phase margin is specified at 60° under standard test conditions (CL = 20 pF, RL = 10 kΩ).

Key Specifications

Pinout & Package

Package: SOIC-14 (D package), 8.65 mm × 6 mm body, surface-mount, JEDEC MS-012AC compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC274CDR, the TLC274BCDG4 offers 5× lower input offset voltage and tighter drift control for calibrated measurement systems; compared with TLV2464IDR, it trades bandwidth and input rail-to-rail capability for superior DC precision and lower quiescent current in battery-constrained designs.

Availability

TLC274BCDG4 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, portable instrumentation, medical patient monitoring front-ends, and automotive cabin environment sensing requiring stable component supply across extended production lifecycles.

Supply support for TLC274BCDG4 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-amp design and manufacturing.

The TLC27xx family was engineered for high-accuracy, low-power analog signal conditioning in single-supply systems - targeting industrial automation, test equipment, and portable instrumentation where CMOS input stage advantages outweigh bipolar speed.

FAQ

What is the maximum operating temperature range for the TLC274BCDG4?

The TLC274BCDG4 is rated for operation from 0°C to 70°C, as confirmed by its C-suffix designation and the Recommended Operating Conditions table in the official datasheet. This range applies to all electrical specifications unless otherwise noted, and thermal derating is not required within this interval. The TLC274BCDG4 does not support extended industrial (–40°C to 85°C) or automotive temperature grades.

Does the TLC274BCDG4 support rail-to-rail input operation?

No, the TLC274BCDG4 does not support rail-to-rail input operation. Its common-mode input voltage range extends to VDD − 1 V at 25°C (and VDD − 1.5 V at other temperatures), and down to 0.1 V below GND. While the output swings rail-to-rail (to GND and near VDD), the inputs cannot accept signals at the positive rail - unlike later-generation CMOS op-amps such as the TLV2464. This limitation must be considered in high-side sensing applications.

Can unused amplifiers in the TLC274BCDG4 be left floating?

No, unused amplifiers in the TLC274BCDG4 must not be left floating. Per Section 6.1.2 of the datasheet, they must be configured as grounded unity-gain followers (noninverting buffer with output tied to inverting input and noninverting input tied to GND) to prevent oscillation or excessive current draw. Floating inputs can cause phase reversal, increased supply current, or unpredictable output states that may affect adjacent channels.

What is the typical supply current consumption of the TLC274BCDG4 at 5 V?

The TLC274BCDG4 draws 2.24 mA typical total supply current (IDD) across all four amplifiers at VDD = 5 V, TA = 25°C, with no load and VIC = 2.5 V. Maximum IDD is 6.4 mA under the same conditions. This value scales with supply voltage - at 10 V, typical IDD rises to 2.24 mA (same typical value) but max increases to 8 mA - confirming low quiescent power across its operating range.

Is the TLC274BCDG4 pin-compatible with other TLC274 variants like TLC274CDR or TLC274BIDR?

Yes, the TLC274BCDG4 is pin-compatible with all SOIC-14 packaged TLC274 variants including TLC274CDR and TLC274BIDR. All share identical 14-pin SOIC (D package) footprints, pin numbering, and pin functions per Figure 3-1 and Table 3-1 of the datasheet. Differences lie solely in grade (B vs C vs I), temperature range, and tested parameters - not physical layout or connectivity.