Texas Instruments TLE2161AIP

Overview

TLE2161AIP from Texas Instruments is a JFET-input, decompensated precision operational amplifier optimized for high-output-drive applications in industrial and test equipment. It delivers ±2.5 V minimum output swing into 100 Ω at ±5 V supplies and ±12.5 V into 600 Ω at ±15 V, with 10 V/µs typical slew rate, 6.5 MHz gain-bandwidth product, and 500 µV maximum input offset voltage over –40°C to +85°C.

For engineers reviewing the TLE2161AIP datasheet, TLE2161AIP pinout, TLE2161AIP application, or TLE2161AIP equivalent, this device is selected for precision analog signal conditioning where low input bias current (5 pA typ), stable long-term offset drift (0.04 µV/month), and robust drive capability into reactive or low-impedance loads are required.

Technical Context

The TLE2161AIP uses TI's Excalibur JFET process to achieve ultra-low input bias current and exceptional parametric stability over temperature and time. Its decompensated architecture requires minimum closed-loop gain of 5 for stability, enabling higher bandwidth than unity-gain-stable op-amps with comparable power.

It features dual offset-null pins (N1/N2) for precise DC calibration, rail-to-rail input common-mode range (–11 V to +13 V at ±15 V supplies), and high open-loop gain (280 V/mV typ) - supporting accurate closed-loop gain accuracy in sensor interface and active filter designs.

Key Specifications

Pinout & Package

Package: 8-pin plastic DIP (P package), through-hole mounting, rated for –40°C to +85°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLE2161CP and OPA2134PA, the TLE2161AIP uniquely balances military-grade temperature range, ultra-low offset, JFET-input bias current, and user-adjustable nulling - making it optimal for calibrated, low-power, high-precision analog channels in harsh environments.

Availability

TLE2161AIP is available at Aetrix Electronics and suitable for industrial instrumentation, automated test equipment, and precision sensor signal chains requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for TLE2161AIP 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 and manufacturing.

The TLE2161 family belongs to TI's Excalibur JFET-input op-amp product line, engineered for high-accuracy, low-drift, low-power analog signal conditioning in demanding industrial, test, and measurement applications.

FAQ

What is the operating temperature range of the TLE2161AIP?

The TLE2161AIP is characterized for operation from –40°C to +85°C, as indicated by its "I" suffix. This extended industrial temperature range ensures reliable performance in factory automation, outdoor instrumentation, and other environments where ambient temperatures exceed commercial-grade limits. All electrical specifications in the datasheet are guaranteed across this full range.

Does the TLE2161AIP require external compensation?

No, the TLE2161AIP is decompensated and does not require external compensation components. However, it is stable only at closed-loop gains of 5 or greater. Using it at unity or low gain (e.g., gain = 1 or 2) will cause oscillation. For gain <5 applications, select a unity-gain-stable alternative such as the OPA2134PA - but note its higher supply current and lack of offset-null pins.

How is the offset voltage adjusted on the TLE2161AIP?

The TLE2161AIP provides two dedicated offset-null terminals (pins 1 and 8). A 10 kΩ potentiometer is connected between these pins, with its wiper tied to VCC– (pin 4). Adjusting the potentiometer balances internal input-stage mismatches, reducing input offset voltage to near-zero. This calibration is essential for DC-critical applications like weigh scales and precision references.

Can the TLE2161AIP drive capacitive loads?

Yes - the TLE2161AIP maintains stability with capacitive loads up to 100 pF when configured with AVD = 5 and RL = 10 kΩ, as verified by phase margin measurements (70°). For larger capacitive loads (e.g., >500 pF), isolation resistance (e.g., 50–100 Ω in series with the output) is recommended to prevent peaking or ringing. Its high output current (±80 mA) also supports charging/discharging large capacitors quickly.

What is the maximum output current capability of the TLE2161AIP?

The TLE2161AIP can source and sink up to ±80 mA continuously, as specified in its Absolute Maximum Ratings. In practice, sustained output currents above ±20 mA require careful thermal management due to power dissipation in the 8-pin DIP package. Derating curves in the datasheet show usable power decreases linearly above 25°C ambient - e.g., at 70°C, maximum continuous power drops to ~640 mW for the P package.