Texas Instruments TL071CP

Overview

TL071CP from Texas Instruments is a single-channel, JFET-input operational amplifier optimized for low-noise audio and precision analog signal conditioning. It delivers 20 V/μs slew rate, 37 nV/√Hz input voltage noise at 1 kHz, ±2.25 V to ±20 V dual-supply operation, and rail-to-rail common-mode input range extending to VCC+. It is widely used in pro audio mixers and battery test equipment where low distortion (0.003% THD+N) and high CMRR (105 dB) are critical.

For engineers reviewing the TL071CP datasheet, TL071CP pinout, TL071CP application, or TL071CP equivalent, key selection considerations include its FET-input architecture for ultra-low input bias current (1 pA typ), offset voltage drift of 2 μV/°C, wide supply range compatibility, and SOIC-8 package thermal performance (RθJA = 95 °C/W).

Technical Context

The TL071CP uses a high-voltage JFET input stage with bipolar output stage, enabling wide common-mode input range including VCC+ and robust output drive into 2 kΩ loads. Its internal compensation ensures unity-gain stability with capacitive loads up to 300 pF.

It features integrated EMI/RF filters and 2 kV HBM ESD protection, supporting reliable operation in electrically noisy environments such as motor drive feedback loops and UPS control circuits without external filtering.

Key Specifications

Pinout & Package

TL071CP is supplied in an 8-pin PDIP (Plastic Dual In-line Package), through-hole mountable with 0.3-inch body width and standard 0.1-inch pin pitch. The package supports manual soldering and socket-based prototyping.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TL071IP and OPA134PA, the TL071CP offers the best balance of low-noise performance, proven reliability in audio and power electronics, and cost efficiency-without requiring PCB redesign or layout changes.

Availability

TL071CP is available at Aetrix Electronics and suitable for pro audio mixer design, battery test equipment development, and solar inverter string monitoring requiring stable component supply across long production lifecycles.

Supply support for TL071CP 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, embedded processing, and digital signal technologies with over 50 years of op-amp innovation.

The TL071CP belongs to TI's legacy low-noise JFET-input op-amp family, engineered for high-fidelity audio, precision instrumentation, and industrial control applications demanding wide supply range and excellent AC/DC performance.

FAQ

What is the maximum capacitive load the TL071CP can drive stably?

The TL071CP is characterized to drive up to 300 pF capacitive load while maintaining phase margin ≥56° and avoiding oscillation. For loads exceeding 100 pF, TI recommends adding a series resistor (typically 22 Ω to 100 Ω) between the output and load to isolate capacitance and preserve stability. This capability makes the TL071CP suitable for driving coaxial cables and ADC input filters without external buffers.

Does the TL071CP support single-supply operation?

Yes-the TL071CP supports single-supply operation from 4.5 V to 40 V total supply, with common-mode input range extending to VCC+. When used in single-supply mode, the input must be biased within the valid common-mode window (e.g., VCC– + 1.5 V to VCC+), and output swing is limited to ~210 mV from each rail under 10 kΩ load. Designers commonly use it in 5 V or 12 V systems with appropriate input/output level shifting.

How does the TL071CP's input offset voltage compare to newer alternatives?

The TL071CP has a typical input offset voltage of 3 mV (max 10 mV), which is higher than modern precision op-amps like OPA134PA (0.5 mV max). However, its 2 μV/°C drift and low 1 pA bias current make it more stable than many CMOS alternatives in temperature-varying environments. For non-critical DC accuracy applications-such as AC-coupled audio or buffered sensor outputs-the TL071CP's offset is fully acceptable and well-compensated by its offset-null pins (1 and 5).

Can the TL071CP replace the TL081 in existing designs?

Yes-the TL071CP is pin-compatible and functionally interchangeable with the TL081 in PDIP-8 packages, sharing identical pinout, supply range, and basic AC specs. Key advantages of TL071CP include lower input bias current (1 pA vs. 30 pA), lower noise (37 nV/√Hz vs. 18 nV/√Hz at 10 kHz), and better CMRR (105 dB vs. 90 dB). No PCB changes are needed, though layout review for noise-sensitive nodes is recommended due to its higher sensitivity to stray capacitance.

What thermal derating applies to the TL071CP in PDIP-8 package?

The TL071CP in PDIP-8 has a junction-to-ambient thermal resistance (RθJA) of 85 °C/W. At 25°C ambient and 940 μA quiescent current, power dissipation is ~38 mW, resulting in ~3.2°C junction rise-well within safe limits. For continuous operation above 70°C ambient, linear derating begins at 11.8 mW/°C above 70°C. Full-rated operation is guaranteed from 0°C to 70°C; operation beyond requires thermal modeling or heatsinking for sustained loads.