OPA129UB
±18V 8-Pin SOIC TubeOPA129UB
±18V 8-Pin SOIC Tube
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Manufacturer Part # : OPA129UB
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Package/Case: SOIC-8
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Part Status : Active
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Brand: Texas Instruments
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Product Categories : Instrumentation, OP Amps, Buffer Amps
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Series : OPA129
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Shipping & Payment
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Service & Packaging
Service & Packaging
About After Sales Service
All Parts Extended Quality Guarantee
Initiate the application within 90 days from the shipment date.
Confirm the return or exchange with our staff.
Maintain the goods in their original condition as received.
Lastly, please note that the eligibility for return or exchange of goods is subject to an assessment of the actual condition of the returned items. We will evaluate the received goods before finalizing the return or exchange process. If you have any inquiries or require further assistance regarding returns or exchanges, please don't hesitate to contact us at [email protected]
About packaging
Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.

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OPA129UB DataSheet

Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Interested Parts
OPA129UB Details
The OPA129UB is a general-purpose operational amplifier from Texas Instruments, designed for precision instrumentation, data acquisition systems, medical equipment, audio processing applications. This device features low offset voltage, wide bandwidth, and rail-to-rail input/output making it ideal for high-precision signal processing.
Key Features
- Low Offset Voltage: Offers 50 μV low offset voltage ideal for precision applications.
- Wide Bandwidth: Provides a wide bandwidth of 10 MHz for fast signal processing.
- Low Input Bias Current: Features 10 pA low input bias current for accurate measurements.
- Rail-to-Rail Input/Output: Offers rail-to-rail input/output for maximum flexibility and high-precision signal processing.
- Low Noise: Has a low noise of 6.5 nV/√Hz for high-fidelity signal processing.
Application
- Precision Instrumentation: Suitable for precision instrumentation applications requiring high accuracy and low noise.
- Data Acquisition Systems: Ideal for data acquisition systems that demand precise signal processing and amplification.
- Medical Equipment: Used in medical equipment where high-precision amplification is necessary, such as in blood analyzers or ECG machines.
- Audio Processing Applications: Applied in audio processing applications like audio amplifiers or sound cards that require precise signal processing and amplification.
Where to Use
The OPA129UB is suitable for any application where precision instrumentation, data acquisition, medical equipment, and audio processing are required. It's ideal for applications that demand high accuracy, low noise, and robust performance.
How to Use
The OPA129UB is designed for use in a variety of circuits and applications. Refer to the datasheet for specific usage guidelines and circuit configurations.
Application Circuit
A detailed circuit diagram illustrating how to connect the OPA129UB in different application scenarios will be provided along with the datasheet. This will enable users to effectively integrate the device into their applications.
Complementary
The OPA129UB can be complemented by other operational amplifiers from Texas Instruments that offer different sets of features, such as higher power or frequency performance. Consult the datasheet for specific recommendations.
Frequently Asked Questions
Q: What is the offset voltage of the OPA129UB?
A: The OPA129UB features a 50 μV low offset voltage, making it suitable for precision applications.
Q: Can I use the OPA129UB in medical equipment?
A: Yes, the OPA129UB is suitable for medical equipment where high-precision amplification and signal processing are required.

Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
Product Category ! | Operational Amplifiers - Op Amps | RoHS | Details |
Mounting Style | SMD/SMT | Package / Case | SOIC-8 |
Vos - Input Offset Voltage | 2 mV | Minimum Operating Temperature | - 40 C |
Maximum Operating Temperature ! | + 125 C | Ib - Input Bias Current | 100 fA |
CMRR - Common Mode Rejection Ratio | 118 dB | Series | OPA129 |
Amplifier Type | Low Input Bias Current Amplifier | Brand | Texas Instruments |
Dual Supply Voltage | +/- 9 V, +/- 12 V, +/- 15 V | Height | 1.58 mm |
In - Input Noise Current Density | 0.0001 pA/sqrt Hz | Length | 4.9 mm |
Maximum Dual Supply Voltage | +/- 18 V | Minimum Dual Supply Voltage | +/- 5 V |
Moisture Sensitive | Yes | Operating Supply Voltage ! | +/- 5 V to +/- 18 V |
Product | Operational Amplifiers | Product Type ! | Op Amps - Operational Amplifiers |
Factory Pack Quantity | 75 | Subcategory | Amplifier ICs |
Supply Type | Dual | Technology | BiFET |
Vcm - Common Mode Voltage | Negative Rail + 5 V to Positive Rail - 5 V | Voltage Gain dB | 120 dB |
Width | 3.91 mm | Unit Weight | 0.002677 oz |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is OPA129UB?
The OPA129UB is a precision, low-noise, high-precision operational amplifier designed by Texas Instruments. It is well-suited for applications requiring high accuracy, low noise, and precise signal amplification, such as test and measurement equipment, data acquisition systems, and medical instrumentation.
How Does OPA129UB Work?
The OPA129UB operates as a precision operational amplifier with low noise and high open-loop gain. It amplifies input signals with high accuracy and stability, making it suitable for precision measurement and instrumentation applications. The amplifier features low input offset voltage and low input bias current, ensuring high accuracy in the amplified signal.
How Many Pins does OPA129UB have and What are the Functions of the Pinout Configuration?
The OPA129UB is housed in a 5-lead SC-70 (Small Outline Integrated Circuit) package. The pinout configuration includes:
- V+: Positive power supply pin.
- V-: Negative power supply pin.
- IN+: Non-inverting input pin.
- IN-: Inverting input pin.
- OUT: Output pin.
What are the Pros and Cons of OPA129UB?
Pros:
- Low Noise: Provides low noise performance, suitable for high-precision applications.
- High Open-Loop Gain: Offers high gain for accurate signal amplification.
- Precision: Features low input offset voltage and low input bias current for high accuracy.
- Space-Saving Package: The 5-lead SC-70 package is compact and space-efficient for small designs.
Cons:
- Limited Functionality: The 5-lead configuration may limit additional functionality or features compared to higher pin count op-amps.
- Temperature Sensitivity: Higher sensitivity to temperature variations may require additional compensation in certain applications.
Are There Any Equivalents/Alternatives to OPA129UB for Recommendation?
- The OPA333 from Texas Instruments is a similar precision op-amp with low noise and low offset voltage.
- Alternatives to the OPA129UB include the LT1792 from Analog Devices and the MCP6V31 from Microchip Technology.
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