Texas Instruments OPA4387PWT

Overview

OPA4387PWT from Texas Instruments is a quad-channel, ultra-high-precision, zero-drift operational amplifier with ±2 µV maximum input offset voltage, ±0.018 µV/°C offset drift (over –40°C to +125°C), and 150 pA maximum input bias current per channel. It operates from 1.7 V to 5.5 V single supply or ±0.85 V to ±2.75 V dual supply, delivering 5.7 MHz gain bandwidth and 8.5 nV/√Hz broadband noise - optimized for high-resolution sensor signal conditioning in weigh scales and precision data acquisition systems.

For engineers reviewing the OPA4387PWT datasheet, OPA4387PWT pinout, OPA4387PWT application, or OPA4387PWT equivalent, this page delivers verified specifications, TSSOP-14 package mapping, channel-specific pin functions, real-world use cases in analog input modules and temperature transmitters, and two validated alternative parts with documented technical and application differences.

Technical Context

The OPA4387PWT implements a proprietary auto-zeroing architecture with internal clocking (100–150 kHz) to continuously correct input offset and drift, eliminating 1/f noise (177 nVPP, 0.1 Hz to 10 Hz) while maintaining flat bias current over temperature. Its rail-to-rail input extends 100 mV beyond supply rails, and output swings within 5 mV of rails under no-load conditions.

It features EMI/RFI-filtered inputs, unity-gain stability, and a common-mode rejection ratio of 130 dB (typical) at 5.5 V supply. The device supports high-impedance sensor interfaces without calibration across –40°C to +125°C, enabled by low input bias current (±300 pA max) and high open-loop gain (120 dB min).

Key Specifications

Pinout & Package

PW package: 14-pin Thin Shrink Small Outline Package (TSSOP), 5.0 mm × 4.4 mm body, 0.65 mm pitch, exposed pad not electrically connected. Designed for automated assembly and thermal performance (R_θJA = 109.6°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA4387PWT, OPA4189IPWR trades guaranteed ultra-low drift and EMI robustness for lower power, while LTC2057HMS8#PBF sacrifices noise and offset performance for broader supply flexibility - neither offers pin compatibility, and both require layout review for decoupling and grounding.

Availability

OPA4387PWT is available at Aetrix Electronics and suitable for precision data acquisition, industrial temperature transmitters, and analog input modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for OPA4387PWT 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 company specializing in analog and embedded processing technologies, with leadership in precision analog design and industrial-grade reliability.

The OPAx387 product line was engineered specifically for ultra-high-precision, low-drift signal conditioning in sensor interfaces, DAQ systems, and industrial process control - prioritizing long-term stability over speed or power efficiency.

FAQ

What is the maximum input offset voltage specification for OPA4387PWT over temperature?

The OPA4387PWT has a maximum input offset voltage of ±2.5 µV at 1.7 V supply and ±2 µV at 5.5 V supply, tested across the full industrial temperature range of –40°C to +125°C. This value is guaranteed by production testing and reflects worst-case performance for system-level calibration planning - the typical distribution is centered near ±0.25 µV at 25°C.

Does OPA4387PWT support rail-to-rail input and output operation?

Yes, OPA4387PWT supports rail-to-rail input with common-mode voltage range extending 100 mV beyond both supply rails, and rail-to-rail output that swings within 5 mV of V+ and V– under no-load conditions. This enables direct interfacing with unbuffered sensors and low-voltage ADCs without level-shifting circuitry - confirmed in Electrical Characteristics Table 6.7.

What is the quiescent current per amplifier for OPA4387PWT at 5.5 V supply?

The OPA4387PWT draws 570 µA per amplifier at 5.5 V supply and 25°C, with a maximum of 675 µA (typical) and 700 µA (max over temperature). Total quiescent current for all four channels is therefore 2.28 mA typical - verified in Section 6.7 Electrical Characteristics under IQ parameter.

Is OPA4387PWT susceptible to EMI or RFI interference?

No - OPA4387PWT integrates on-chip EMI/RFI filtering on both common-mode and differential-mode input paths, achieving >120 dB rejection at 1 GHz and >100 dB at 5 GHz per Figure 7-2. This is a defined feature of the OPAx387 family and eliminates need for external RC filters in ventilator or field instrumentation designs.

What package type and pin count does OPA4387PWT use?

OPA4387PWT uses the PW package: a 14-pin Thin Shrink Small Outline Package (TSSOP) with 0.65 mm pitch and 5.0 mm × 4.4 mm body dimensions. Pinout is defined in Figure 5-4 and Table 5-3 of the SBOS984G datasheet - confirmed as production-ready since September 2023 revision.