Texas Instruments TL071CD

Overview

TL071CD 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 TL071CD datasheet, TL071CD pinout, TL071CD application, or TL071CD equivalent, key selection criteria include its FET-input architecture enabling pA-level bias current, wide supply flexibility, offset voltage drift of only 2 μV/°C, and SOIC-8 packaging suitable for space-constrained PCB layouts with thermal resistance of 95 °C/W.

Technical Context

The TL071CD uses a high-impedance JFET differential pair input stage followed by a Class AB output stage, enabling ultra-low input bias current (±1 pA typ) and low input capacitance (6 || 1 TΩ || pF). Its internal compensation ensures unity-gain stability with capacitive loads up to 300 pF.

It operates across 0°C to 70°C ambient temperature, supports common-mode input voltages up to VCC+, and features integrated EMI/RF filters and output short-circuit protection - making it robust in noisy industrial and audio environments without external shielding.

Key Specifications

Pinout & Package

TL071CD is supplied in an 8-pin SOIC (PS) package with standard surface-mount footprint (5.3 mm × 6.2 mm), 1.27 mm pitch, and 95 °C/W junction-to-ambient thermal resistance - suitable for reflow assembly and moderate-power analog stages.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TL071CP and OPA1611AIDR, TL071CD uniquely balances low noise, trimmable offset, SOIC thermal performance, and cost-effectiveness for mid-tier professional audio and industrial test equipment - without requiring layout changes or supply redesign.

Availability

TL071CD is available at Aetrix Electronics and suitable for pro audio mixer design, battery test equipment development, solar inverter monitoring, and AC motor drive signal conditioning requiring stable component supply and long-term manufacturability.

Supply support for TL071CD 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-amps and broad industrial portfolio coverage.

The TL071CD belongs to TI's legacy TL07x family of JFET-input op-amps, engineered for low-noise, high-input-impedance analog signal conditioning in audio, instrumentation, and industrial control systems.

FAQ

What is the maximum capacitive load TL071CD can drive stably?

The TL071CD is characterized to drive up to 300 pF capacitive load while maintaining phase margin ≥56° and stable step response. For loads exceeding 300 pF, external isolation resistor (e.g., 10–100 Ω in series with output) is recommended to prevent peaking or oscillation - especially in high-gain configurations or with long PCB traces.

Does TL071CD support single-supply operation?

Yes, TL071CD supports true single-supply operation: its common-mode input range extends to VCC+, and output swings within ~210 mV of both rails under 10 kΩ load. To operate from a single +15 V supply, bias the IN+ pin at VCC/2 using a resistor divider, and ensure signal sources remain within (VCC–)+1.5 V to VCC+.

How do I adjust input offset voltage on TL071CD?

TL071CD provides dedicated OFFSET N1 (Pin 1) and OFFSET N2 (Pin 5) terminals. Connect a 10-kΩ potentiometer between these pins, with its wiper grounded (or tied to VCC–); adjusting the potentiometer nulls input offset voltage to <1 mV. This is essential for DC-coupled precision applications like strain gauge amplifiers.

What is the typical quiescent current of TL071CD?

The typical quiescent current of TL071CD is 1.4 mA per amplifier at ±15 V supply and 25°C. It increases slightly with temperature and supply voltage - reaching ~1.6 mA at ±20 V - but remains well below 2.5 mA across its full operating range, enabling efficient multi-stage analog signal chains.

Is TL071CD pin-compatible with other TL07x variants?

TL071CD (SOIC-8) shares identical pinout with TL071CP (PDIP-8), TL071ACD, and TL071BCD. However, it is not pin-compatible with SOT-23 or SC70 variants (e.g., TL071DBVR), which have different pin counts and assignments. Always verify package-specific pin functions before substitution.