Texas Instruments TL084CPW

Overview

TL084CPW from Texas Instruments is a quad JFET-input operational amplifier in 14-pin TSSOP package, delivering 5.25 MHz gain-bandwidth, 20 V/μs slew rate, ±15 V supply operation, and rail-to-rail common-mode input range extending to VCC+. It enables precision signal conditioning in multi-channel analog front-ends for industrial power electronics and audio systems.

For engineers reviewing the TL084CPW datasheet, TL084CPW pinout, TL084CPW application, or TL084CPW equivalent, key selection criteria include its FET-input low bias current (≤200 pA), low offset drift (±18 μV/°C), 0.003% THD+N at 1 kHz, and compatibility with ±2.25 V to ±20 V dual supplies - critical for high-fidelity sensor interfaces and legacy op-amp drop-in upgrades.

Technical Context

The TL084CPW implements a classic JFET-input differential pair architecture with high-impedance inputs (1 TΩ common-mode resistance), internal frequency compensation, and output short-circuit protection. Its open-loop gain exceeds 115 dB across –40°C to +85°C, supporting stable unity-gain and inverting configurations without external compensation.

It operates with true common-mode input voltage range including VCC+, enabling single-supply applications when biased appropriately. The device exhibits 56° phase margin into 20 pF capacitive loads and recovers from overload in ≤300 ns - essential for driving ADC drivers and active filters in real-time control loops.

Key Specifications

Pinout & Package

The TL084CPW is housed in a 14-pin TSSOP (Thin Shrink Small Outline Package) with 0.65 mm pitch, optimized for automated assembly and thermal performance (R_θJA = 200.3 °C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TL084IPW and TL074CPW, the TL084CPW offers the best balance of cost, availability, and proven reliability in legacy industrial designs - especially where moderate noise and standard temperature range suffice.

Availability

TL084CPW is available at Aetrix Electronics and suitable for solar inverter signal conditioning, motor drive current sensing, and pro audio mixer channel strips requiring stable component supply across long production lifecycles.

Supply support for TL084CPW 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.

The TL08x family was engineered for cost-sensitive industrial and audio applications demanding JFET-input performance, wide supply range, and robust ESD tolerance - making TL084CPW ideal for legacy-compatible upgrades and high-volume analog signal chains.

FAQ

What is the maximum supply voltage for TL084CPW?

The TL084CPW supports a total supply voltage (VCC+ to VCC–) of up to 40 V, corresponding to ±20 V dual supply or 4.5 V to 40 V single supply operation. Absolute maximum ratings specify 42 V for non-NS/PS packages, but TI recommends staying within 40 V for reliable long-term operation per the Recommended Operating Conditions table.

Does TL084CPW have rail-to-rail input capability?

Yes, the TL084CPW features a common-mode input voltage range that includes VCC+, allowing inputs to swing up to the positive rail. However, it does not support rail-to-rail output swing - typical headroom is 115–210 mV from each rail under 10 kΩ load at ±15 V supply.

Can TL084CPW replace older TL084 variants on existing PCBs?

Yes, TL084CPW is pin-compatible with other TL084x variants in TSSOP-14 (PW) package, including TL084IPW and TL084ACPW. Electrical characteristics match the TL084C grade, so no layout changes are required for drop-in replacement in commercial-temperature applications.

What is the typical input bias current of TL084CPW at 25°C?

The typical input bias current of TL084CPW is 65 pA at 25°C, with a maximum of 200 pA across the full 0°C to +70°C operating range. This ultra-low value makes it suitable for interfacing with high-impedance sources such as photodiodes, piezoelectric sensors, and passive RC networks.

Is TL084CPW suitable for single-supply operation?

Yes, TL084CPW supports single-supply operation from 4.5 V to 40 V. Its common-mode input range extends to VCC+, enabling direct connection to unbuffered DAC outputs or microcontroller GPIOs. Output swing remains asymmetric (closer to negative rail), so proper input biasing and output coupling are required for AC-coupled signal paths.