Texas Instruments TLC274CPW

Overview

TLC274CPW from Texas Instruments is a precision quad CMOS operational amplifier optimized for single-supply operation, featuring 10 mV max input offset voltage (C-suffix), 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–70°C and delivers 4.5 MHz unity-gain bandwidth in TSSOP-14 package - ideal for sensor signal conditioning in industrial data acquisition systems.

For engineers reviewing the TLC274CPW datasheet, TLC274CPW pinout, TLC274CPW application, or TLC274CPW equivalent, key selection considerations include its low-input-bias-current (≤60 pA typ), wide common-mode input range extending below GND, and compatibility with 3-V logic interfaces without level-shifting circuitry.

Technical Context

The TLC274CPW uses a polysilicon-gate CMOS process enabling ultra-high input impedance (>10¹² Ω), minimal input bias current drift, and latch-up immunity. Its input stage supports common-mode voltages from –0.1 V to VDD–1 V (at 25°C), while the output stage drives to within 50 mV of GND and 0.05 V of VDD under 10-kΩ load.

Designed specifically for single-supply environments, it avoids the need for dual-rail supplies in analog front-ends. The device achieves 65–80 dB CMRR and PSRR across 0°C–70°C, with temperature coefficient of input offset voltage limited to 0.3 µV/°C (25°C–70°C).

Key Specifications

Pinout & Package

Packaged in 14-pin TSSOP (PW), the TLC274CPW measures 5 mm × 6.4 mm with 0.65 mm lead pitch and exposed pad not electrically connected. Pin numbering follows standard top-view orientation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV274IPW and LM324DR, the TLC274CPW offers superior input bias current (<60 pA) and guaranteed rail-to-rail output swing - making it optimal for high-impedance, single-supply sensor interfaces where precision and low-noise performance are prioritized over ultra-low quiescent current or extreme temperature range.

Availability

TLC274CPW is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, medical instrumentation front-ends, and automotive cabin environment monitoring requiring stable component supply and long-term production continuity.

Supply support for TLC274CPW 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 expertise in precision op-amps and industrial-grade signal-chain solutions.

The TLC274CPW belongs to TI's TLC27xx precision quad op-amp family, designed explicitly for single-supply, low-power, high-input-impedance applications in industrial, medical, and test equipment where CMOS input stage advantages are essential.

FAQ

What is the maximum operating temperature range for the TLC274CPW?

The TLC274CPW is rated for 0°C to 70°C ambient operation (C-suffix grade). Its recommended supply voltage range is 3 V to 16 V within this temperature span. Absolute maximum junction temperature is 150°C, but sustained operation above 70°C requires derating per thermal resistance data in the datasheet. The TLC274CPW does not support industrial –40°C to 85°C operation - that capability is reserved for I-suffix variants like TLC274IPW.

Does the TLC274CPW support true rail-to-rail input operation?

The TLC274CPW supports rail-to-rail *output* swing (to within 50 mV of GND and VDD), but its input common-mode range extends only to VDD–1 V (at 25°C) and down to –0.1 V - meaning it accepts inputs slightly below GND but not up to VDD. For full rail-to-rail input capability, consider TI's TLV27x or OPAx320 families. The TLC274CPW's input stage is optimized for single-supply use with ground-referenced signals, not full VDD-referenced inputs.

Can unused channels of the TLC274CPW be left floating?

No - unused amplifiers in the TLC274CPW must be configured as unity-gain buffers with inputs tied to a valid common-mode voltage (e.g., VDD/2 via resistor divider or directly to GND if within VICR). Leaving inputs unconnected risks oscillation due to stray capacitance and internal node instability. The datasheet explicitly recommends grounding noninverting inputs and connecting outputs to inverting inputs to form stable, low-impedance followers.

What is the typical supply current consumption of the TLC274CPW at 5 V?

At VDD = 5 V and TA = 25°C, the TLC274CPW draws 2.24 mA (typical) to 6.4 mA (max) total supply current for all four amplifiers under no-load conditions. This value increases to ~8 mA at 10 V supply. Current scales approximately linearly with supply voltage and is highly dependent on output loading - heavy capacitive loads or low-impedance resistive loads will increase IDD beyond the no-load specification.

Is the TLC274CPW pin-compatible with other TSSOP-14 quad op-amps?

The TLC274CPW uses standard TSSOP-14 pinout (per JEDEC MO-153) and shares identical pin functions with industry-standard quad op-amps such as LM324, TLV274, and MCP6004 - including VDD (pin 4), GND (pin 11), and channel I/O assignments. However, electrical behavior (input structure, output drive, bias current) differs significantly; direct substitution requires validation of common-mode range, output swing, and stability with existing feedback networks.