OPA4131NJ Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments OPA4131NJ is a quad FET-input operational amplifier featuring 4MHz bandwidth, ultra-low 0.05nA bias current, and 70dB CMRR in a 14-Pin SOIC package. From $7.23 in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- OPA4131NJ Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $7.2300(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Quad FET-input op-amp with ultra-low bias current of 0.05nA (50fA), ideal for high-impedance sensor interfaces
- 4MHz gain-bandwidth product with voltage-feedback architecture for precision signal amplification
- 70dB minimum common-mode rejection ratio (80dB typical) ensuring excellent noise immunity
- Single 14-Pin SOIC package integrating four independent op-amps for space-efficient PCB design
- RoHS-compliant (Pb-free) construction suitable for industrial and medical applications
Applications
The OPA4131NJ is well-suited for precision instrumentation and sensor signal conditioning where ultra-low input bias current is critical, such as pH meters, photodiode amplifiers, and capacitive sensor interfaces. Its quad-channel configuration makes it ideal for multi-channel data acquisition systems, active filter banks, and medical diagnostic equipment requiring low-noise, high-accuracy analog front-ends. The device is also commonly used in industrial control systems and portable battery-powered instruments where low leakage and stable offset performance are essential.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.00005 µA |
| Bias Current-Max (IIB) @25C | 0.00005 µA |
| Common-mode Reject Ratio-Min | 70dB |
| Common-mode Reject Ratio-Nom | 80dB |
| Frequency Compensation | YES |
| Input Offset Current-Max (IIO) | 0.00005 µA |
| Input Offset Voltage-Max | 1000 µV |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Low-Bias | YES |
| Low-Offset | NO |
| Micropower | NO |
| Neg Supply Voltage Limit-Max | -18 V |
| Neg Supply Voltage-Nom (Vsup) | -15 V |
| Number of Functions | 4 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Nom | 10V/us |
| Subcategory | Operational Amplifier |
| Supply Current-Max | 7mA |
| Supply Voltage Limit-Max | 18V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Unity Gain BW-Nom | 4000 |
| Voltage Gain-Min | 50100 |
| Wideband | NO |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for OPA4131NJ:
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Frequently Asked Questions
What is the input bias current of the OPA4131NJ?
The OPA4131NJ has a maximum input bias current (IIB) of 0.05nA (50fA) at 25°C, and a maximum input offset current (IIO) of 0.05nA. This extremely low bias current makes it ideal for high-impedance signal sources such as photodiodes, pH electrodes, and capacitive sensors where even picoamp-level leakage would introduce measurement errors.
What are the typical applications for the OPA4131NJ quad op-amp?
The OPA4131NJ is commonly used in precision instrumentation, sensor signal conditioning, photodiode transimpedance amplifiers, pH meter front-ends, active analog filters, multi-channel data acquisition systems, and medical diagnostic equipment. Its FET input stage and 4MHz bandwidth make it suitable for any application requiring low-leakage, accurate voltage amplification across four independent channels.
What package does the OPA4131NJ come in, and are there pin-compatible alternatives?
The OPA4131NJ is packaged in a 14-Pin SOIC (Small Outline IC) package, which is widely available and easy to hand-solder or use in automated assembly. Pin-compatible quad op-amp alternatives with similar FET inputs include the TL084 and OPA4134 series from Texas Instruments. Always verify supply voltage range and bias current specifications when substituting to ensure equivalent performance in your circuit.
What is the common-mode rejection ratio (CMRR) of the OPA4131NJ?
The OPA4131NJ specifies a minimum CMRR of 70dB and a nominal CMRR of 80dB. This high rejection ratio ensures that signals common to both inputs—such as power supply noise or electromagnetic interference—are effectively suppressed, maintaining accurate differential signal amplification in noisy industrial and laboratory environments.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $13.4550 | $13.46 |
| 2+ | $12.5000 | $25.00 |
| 3+ | $11.0000 | $33.00 |
| 50+ | $8.4600 | $423.00 |
| 100+ | $8.1100 | $811.00 |
| 250+ | $7.2300 | $1807.50 |
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