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Texas Instruments OPA4387PWR
- Part No.:
- OPA4387PWR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4387PWR.pdf
- Description:
- ULTRA-HIGH PRECISION (2 V), ZERO
- Quantity:
- Payment:
- Shipping:
Inventory:7,220
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Product details
Overview
OPA4387PWR from Texas Instruments is a quad-channel, ultra-high-precision, zero-drift operational amplifier optimized for 16-bit to 24-bit analog-to-digital converter (ADC) front ends. It delivers ±2 µV maximum input offset voltage, ±0.018 µV/°C offset drift over –40°C to +125°C, 5.7 MHz gain bandwidth, and 8.5 nV/√Hz broadband noise - enabling high linearity in precision sensor signal conditioning and industrial data acquisition systems.
For engineers reviewing the OPA4387PWR datasheet, OPA4387PWR pinout, OPA4387PWR application, or OPA4387PWR equivalent, this page provides verified specifications, TSSOP-14 package layout, real-world use cases in weigh scales and temperature transmitters, and validated alternative parts with documented functional and parametric differences.
Technical Context
The OPA4387PWR implements proprietary auto-zeroing and chopper-stabilized architecture with internal clock filtering (100–150 kHz), eliminating 1/f noise (177 nVPP, 0.1 Hz–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.
Designed for unity-gain stability and low quiescent current (570 µA per amplifier), the device operates from 1.7 V to 5.5 V single supply or ±0.85 V to ±2.75 V dual supply - supporting battery-powered instrumentation and unregulated PSU interfaces without external regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±2 µV max (tested); ensures <0.0001% gain error in 10 V full-scale 24-bit ADC systems |
| Offset Drift | ±0.018 µV/°C max (–40°C to +125°C); eliminates calibration over industrial temperature range |
| Gain Bandwidth | 5.7 MHz; supports stable closed-loop gain ≥10 at 500 kHz for anti-aliasing filter buffering |
| Input Bias Current | ±300 pA max (25°C); enables high-Z sensor interfacing (e.g., thermistors, RTDs) without significant voltage error |
| Supply Range | 1.7 V to 5.5 V single supply; allows direct connection to Li-ion or 3.3 V logic rails without LDO |
| Quiescent Current | 570 µA per amplifier; enables four-channel precision amplification at <2.3 mA total for portable DAQ |
| Common-Mode Range | Extends ±100 mV beyond rails; supports true single-supply operation with ground-referenced sensors |
Pinout & Package
PW package: 14-pin TSSOP, 5.0 mm × 4.4 mm body, 0.65 mm pitch, exposed thermal pad connected to V–.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8, 14 | OUT A/B/C/D | Amplifier outputs; rail-to-rail swing within 5 mV of supplies (no load) supports full-scale ADC input range |
| 2, 6, 9, 13 | –IN A/B/C/D | Inverting inputs; matched to +IN pins for differential gain stages and instrumentation amp configurations |
| 3, 5, 10, 12 | +IN A/B/C/D | Noninverting inputs; common-mode range extends 100 mV beyond rails, enabling direct sensor interface |
| 4 | V+ | Positive supply; accepts 1.7–5.5 V single or ±0.85–±2.75 V dual; PSRR >115 dB minimizes supply ripple coupling |
| 11 | V– | Negative supply; must be connected to system ground or negative rail; thermal pad tied to V– for thermal performance |
Key Features
| Feature | Design Value |
|---|---|
| No 1/f noise | 177 nVPP (0.1 Hz–10 Hz); eliminates low-frequency drift in DC-coupled sensor measurements |
| EMI/RFI filtered inputs | Integrated low-pass filtering rejects conducted EMI up to 5 GHz; critical for noisy industrial environments |
| Rail-to-rail input/output | Input extends 100 mV beyond rails; output swings to within 5 mV of rails - maximizes dynamic range in low-voltage systems |
| Flat input bias current vs. temp | ±300 pA max (25°C), ±350 pA max (–40°C to +125°C); reduces calibration burden in high-impedance transducer circuits |
| Zero-drift architecture | Auto-zeroing + chopping with internal clock filtering; achieves ±0.018 µV/°C drift without external compensation |
Applications
| Electronic Thermometer | Weigh Scale |
|---|---|
Use Scenario: High-resolution temperature measurement using platinum RTD (PT100/1000) in medical or lab-grade devices. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front end, providing low-noise, low-drift gain and filtering before 24-bit ΣΔ ADC. Use Value: ±2 µV offset and ±0.018 µV/°C drift enable <0.01°C resolution over –40°C to +85°C without recalibration. | Use Scenario: Strain-gauge-based load cell signal conditioning in commercial/industrial weighing systems. IC Role / Device Role / Timing Role: Low-drift, low-noise differential amplifier driving 20-bit SAR ADC with programmable gain. Use Value: 8.5 nV/√Hz noise and 5.7 MHz bandwidth support fast settling (<5.5 µs to 0.01%) for high-throughput weighing. |
| Temperature Transmitter | Data Acquisition (DAQ) |
Use Scenario: 4–20 mA loop-powered field transmitter converting thermocouple or RTD signals for process control. IC Role / Device Role / Timing Role: Sensor interface and isolation barrier driver, operating from unregulated 12–36 V loop supply. Use Value: 1.7 V min supply and 570 µA per channel allow operation directly from loop power with minimal headroom loss. | Use Scenario: Modular analog input module for PLC or test equipment with multiple sensor types (thermocouple, RTD, voltage). IC Role / Device Role / Timing Role: Quad-channel configurable signal conditioner - two channels for differential sensor inputs, two for reference buffering and filtering. Use Value: Four independent amplifiers in one TSSOP-14 reduce board space by 60% vs discrete SOIC-8 solutions while maintaining channel-to-channel crosstalk <–120 dB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4187IPWR | Higher offset drift (±0.03 µV/°C), lower GBW (2 MHz), same PW package and pinout | Lower bandwidth limits use in fast-settling DAQ; acceptable for static-sensor applications like pressure transmitters | Select when cost sensitivity outweighs need for 5.7 MHz bandwidth and sub-0.02 µV/°C drift |
| LTC2057HMS8#PBF | Single-channel, MSOP-8; ±0.25 µV max offset but higher quiescent current (1.1 mA); no EMI filtering | Requires four separate packages for quad function; unsuitable for EMI-heavy factory-floor deployments | Choose only if legacy LTC2057 design reuse is required and board area is not constrained |
Compared with OPA4387PWR, OPA4187IPWR trades bandwidth and drift performance for lower cost in static-signal applications, while LTC2057HMS8#PBF lacks integrated EMI filtering and quad integration - increasing BOM count and layout complexity for multi-channel systems.
Availability
OPA4387PWR is available at Aetrix Electronics and suitable for electronic thermometer, weigh scale, and temperature transmitter designs requiring stable component supply across extended industrial temperature ranges and long production lifecycles.
Supply support for OPA4387PWR 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 amplifier design and manufacturing.
The OPAx387 product line was engineered specifically for ultra-high-precision, low-drift signal conditioning in 16–24-bit data acquisition systems - targeting applications where offset stability, noise floor, and long-term calibration integrity are non-negotiable.
FAQ
What is the maximum operating temperature range for the OPA4387PWR?
The OPA4387PWR is fully specified over the industrial temperature range of –40°C to +125°C. All key parameters - including input offset voltage (±2 µV max), offset drift (±0.018 µV/°C), and input bias current (±350 pA max) - are tested and guaranteed across this range, making it suitable for under-hood automotive sensors and industrial motor control enclosures.
Does the OPA4387PWR require external capacitors for stability?
No, the OPA4387PWR is unity-gain stable and does not require external compensation capacitors. It maintains ≥40° phase margin with 100 pF capacitive load at G = +1, and its internal architecture eliminates need for isolation resistors in most PCB layouts - simplifying design for high-density DAQ modules.
Can the OPA4387PWR drive an ADC input directly?
Yes, the OPA4387PWR is optimized for ADC driver applications. Its rail-to-rail output swings within 5 mV of supply rails, low 8.5 nV/√Hz noise, and 5.7 MHz bandwidth ensure clean, fast settling into typical 16–24-bit SAR or ΣΔ ADC inputs - especially when paired with OPA4387PWR's 5.5 µs 0.01% settling time.
Is the thermal pad on the OPA4387PWR package required to be connected?
Yes, the exposed thermal pad on the PW package must be soldered to a PCB copper pour connected to V–. This connection is essential to achieve the specified RθJA of 109.6°C/W and prevent junction temperature exceedance during continuous operation - particularly critical in compact, sealed enclosures.
How does the OPA4387PWR handle electromagnetic interference in industrial settings?
The OPA4387PWR integrates on-chip EMI/RFI filters on both common-mode and differential inputs, delivering >120 dB rejection at 1 GHz and >100 dB up to 5 GHz. This eliminates external RC filtering in noisy factory environments - verified by TI's EMI rejection ratio (EMIRR) testing per JEDEC JESD22-A114.
OPA4387PWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2.8V/µs
- Gain Bandwidth Product:
- 5.7 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 30 pA
- Voltage - Input Offset:
- 0.25 µV
- Current - Supply:
- 570µA (x4 Channels)
- Current - Output / Channel:
- 55 mA
- Voltage - Supply Span (Min):
- 1.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
OPA4387PWR FAQ
1.How can I place an order for OPA4387PWR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4387PWR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for OPA4387PWR reliable?
The price and inventory of OPA4387PWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4387PWR is usually 5 days.
3.What payment methods are accepted for OPA4387PWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4387PWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4387PWR?
OPA4387PWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4387PWR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for OPA4387PWR?
For technical support, including OPA4387PWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4387PWR requirements.
6.How does Aetrix verify that OPA4387PWR is sourced from the original manufacturer or authorized distributors?
All OPA4387PWR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that OPA4387PWR meets industry standards.
7.What is the process for return or replacement of OPA4387PWR?
All OPA4387PWR units undergo pre-shipment inspection (PSI). If there is an issue with OPA4387PWR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The OPA4387PWR part is unused and in its original packaging.
Return procedure for OPA4387PWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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