Texas Instruments TLE2037CDR

Overview

TLE2037CDR from Texas Instruments is a decompensated, high-speed precision operational amplifier optimized for closed-loop gains ≥5. It delivers 50 MHz gain-bandwidth product, 7.5 V/μs slew rate, 2.5 nV/√Hz input voltage noise at 1 kHz, 25 μV max input offset voltage (0°C to 70°C), and operates on ±4 V to ±19 V supplies. It serves in low-noise instrumentation amplifiers, active filters, and high-fidelity signal conditioning stages.

For engineers reviewing the TLE2037CDR datasheet, TLE2037CDR pinout, TLE2037CDR application, or TLE2037CDR equivalent, key selection criteria include its decompensated stability requirement (AV ≥ 5), rail-to-rail output swing capability (±13.5 V into 2 kΩ), low 1/f noise corner, and Excalibur process-based dc precision-critical for sensor front-ends and precision data acquisition systems.

Technical Context

The TLE2037CDR uses a decompensated internal architecture that trades unity-gain stability for higher bandwidth and slew rate versus the TLE2027 series. Its 50 MHz gain-bandwidth product and 50° phase margin at unity gain require minimum closed-loop gain of 5 for stable operation.

It integrates saturation recovery circuitry to minimize overload recovery time and features matched transistor pairs fabricated on TI's Excalibur bipolar process, enabling 131 dB common-mode rejection ratio (typ), 144 dB supply-voltage rejection ratio (typ), and low long-term offset drift (0.006 μV/month).

Key Specifications

Pinout & Package

Package: 8-pin SOIC (Small Outline Integrated Circuit), tape-and-reel (R suffix), RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA211IDR and AD8675ARZ, the TLE2037CDR uniquely balances decompensated speed (50 MHz), low noise (2.5 nV/√Hz), and tight dc specs (25 μV VIO) in an SOIC-8 package-making it optimal for fixed-gain, high-fidelity analog signal chains where stability constraints are manageable.

Availability

TLE2037CDR is available at Aetrix Electronics and suitable for precision instrumentation, industrial data acquisition, and high-fidelity audio signal conditioning requiring stable component supply and full traceability.

Supply support for TLE2037CDR 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 solutions for industrial, automotive, and communications markets.

The TLE2037CDR belongs to TI's Excalibur precision op-amp family, engineered for applications demanding simultaneous high dc accuracy, low noise, and wide bandwidth-particularly in sensor interfaces and test equipment.

FAQ

What is the minimum closed-loop gain required for stable operation of the TLE2037CDR?

The TLE2037CDR is decompensated and requires a minimum closed-loop gain of 5 to ensure stability. This is explicitly specified in the datasheet's operating characteristics section and confirmed by its 50° phase margin at unity gain. Operating below gain 5 risks oscillation or ringing. Designers must verify loop gain and phase margin using SPICE models or bench testing under actual load conditions. The TLE2037CDR's compensation is optimized for this constraint-not for unity-gain use.

Does the TLE2037CDR support rail-to-rail output swing?

The TLE2037CDR does not provide rail-to-rail output swing. Its maximum output voltage swing is ±13.5 V into a 2 kΩ load with ±15 V supplies, leaving ~1.5 V headroom from each rail. This limitation stems from its bipolar output stage architecture. For true rail-to-rail output, consider alternatives like the OPA192 or ADA4077-but note those lack the TLE2037CDR's 50 MHz bandwidth and decompensated speed profile.

Can the offset null pins (1 and 5) of the TLE2037CDR be left unconnected?

Yes, Pins 1 (OFFSET N1) and 5 (OFFSET N2) may be left unconnected if factory-level offset accuracy (25 μV max) is sufficient for the application. These pins are provided solely for optional external trimming via a 10-kΩ potentiometer; no internal connection or biasing is required. Leaving them open introduces no performance penalty and is the default configuration for most designs using the TLE2037CDR.

What is the input voltage noise spectral density of the TLE2037CDR at 10 Hz?

The TLE2037CDR has an input voltage noise spectral density of 3.3 nV/√Hz at 10 Hz, as measured with RS = 20 Ω per the datasheet's Figure 2 test condition. This low 1/f noise value confirms its suitability for DC-coupled, low-frequency precision applications such as thermocouple amplifiers or strain gauge signal chains where flicker noise dominates.

Is the TLE2037CDR pin-compatible with the TLE2027CDR?

No, the TLE2037CDR is not pin-compatible with the TLE2027CDR despite sharing the same SOIC-8 package and pinout numbering. While both use identical physical pin assignments (e.g., Pin 2 = IN−, Pin 3 = IN+, Pin 6 = OUT), their internal compensation differs fundamentally: the TLE2027CDR is unity-gain stable (15 MHz GBW), whereas the TLE2037CDR is decompensated (50 MHz GBW, AV ≥ 5 required). Swapping them without circuit redesign will cause instability.