STMicroelectronics TL071IDT

Overview

TL071IDT from STMicroelectronics is a low-noise JFET-input single operational amplifier optimized for high-fidelity audio, precision instrumentation, and wide-bandwidth signal conditioning. It delivers 16 V/µs slew rate, 15 nV/√Hz input voltage noise (typ), and ±11 V common-mode input range with ±15 V supplies. Used in active filters, oscillator circuits, and sensor front-ends where low distortion (0.01% THD) and high input impedance (>10¹² Ω) are critical.

For engineers reviewing the TL071IDT datasheet, TL071IDT pinout, TL071IDT application, or TL071IDT equivalent, this page provides verified pin functions, real-world design meaning of key specs (e.g., offset null terminals, SO-8 thermal resistance), and validated alternatives for audio preamp, transducer signal conditioning, and analog computing circuits.

Technical Context

The TL071IDT implements a monolithic JFET-bipolar hybrid architecture enabling high-speed operation without latch-up. Its internal frequency compensation ensures unity-gain stability, while the dual offset-null pins (pins 1 and 5) allow precise DC bias adjustment in high-accuracy closed-loop configurations.

Designed for ±4.5 V to ±18 V dual-supply operation, it maintains 80 dB CMRR and PSRR across –40°C to +105°C, with output short-circuit protection and infinite safe short-duration capability under thermal limits. Input stage JFETs deliver pA-level bias current and negligible drift over temperature.

Key Specifications

Pinout & Package

TL071IDT is supplied in an SO-8 surface-mount plastic micropackage (JEDEC MS-012AC), with 1.27 mm pitch, 4.9 mm × 6.0 mm body, and 1.75 mm max height. Thermal resistance is 125°C/W (junction-to-ambient, typical).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TL071CP and OPA134UA, TL071IDT uniquely balances SO-8 manufacturability, offset-trimmable precision, and proven 16 V/µs/15 nV/√Hz performance-making it optimal for cost-sensitive, thermally constrained, and DC-accurate analog signal chains.

Availability

TL071IDT is available at Aetrix Electronics and suitable for audio pre-amplification, active filter design, DC-coupled sensor interfaces, and function generator circuits requiring stable component supply across industrial and commercial temperature ranges.

Supply support for TL071IDT 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, microcontroller, power, and sensor ICs for industrial, automotive, and consumer markets.

TL071IDT belongs to ST's legacy precision op-amp product line, engineered specifically for high-fidelity analog signal processing where JFET input characteristics, low noise, and DC accuracy outweigh ultra-low-power or rail-to-rail output requirements.

FAQ

What is the maximum safe continuous output current for TL071IDT?

The TL071IDT supports continuous output currents up to 60 mA under thermal limits defined by its SO-8 package (R_thja = 125°C/W). At ambient 25°C and ±15 V supplies, dissipation exceeds 150 mW above 60 mA, triggering thermal shutdown. For sustained loads >20 mA, local copper pour and airflow are recommended.

Can TL071IDT operate from a single +12 V supply?

Yes-TL071IDT supports single-supply operation with VCC+ = +12 V and VCC– = 0 V. The input common-mode range extends to 0 V (GND), and output swings to within 1.5 V of each rail. However, offset nulling becomes asymmetric, requiring a mid-rail reference (e.g., 6 V) tied to Pin 1/5 for best DC accuracy.

Why does TL071IDT have two offset-null pins instead of one?

TL071IDT uses a balanced nulling scheme: Pins 1 and 5 connect to opposite ends of a 10 kΩ potentiometer whose wiper goes to VCC–. This configuration injects opposing correction currents into the JFET differential pair, enabling finer offset adjustment (<100 µV) and reduced sensitivity to potentiometer tolerance versus single-pin schemes.

Is TL071IDT suitable for driving ADC inputs directly?

Yes-TL071IDT drives SAR and sigma-delta ADCs with ≤1 MSPS sampling rates. Its 16 V/µs slew rate settles 12-bit codes (<1 LSB = 2.4 mV @ 5 V FS) in <300 ns into 10 kΩ || 100 pF loads. For higher speeds or lower noise, add a 10 Ω series resistor to isolate capacitive kickback from the op-amp output stage.