OPA129 (4)
OPA129 is available from Texas Instruments at Xecor. Designed for ultra-low bias current applications, the OPA129 offers exceptional performance with features like low input bias current, high common-mode rejection ratio, and a wide operating temperature range. Available in the PDIP-8 package, it is ideal for precision instrumentation, medical devices, and industrial control systems. Whether used in automotive electronics, data acquisition systems, or high-impedance sensor interfaces, this series ensures reliability, accuracy, and efficiency for demanding applications. Xecor is an authorized distributor for Texas Instruments. Please view our extensive selection of the OPA129 series below.
| Part Number | Description | Package | Inventory | Add To Bom |
|---|---|---|---|---|
| OPA129U | Precision operational amplifier with extremely low bias current | SOIC-8 | 52 | |
| OPA129UB | Op Amp Single Low Input Bias Current Amplifier | SOIC-8 | 9,413 | |
| OPA129UE4 | Difet operational amplifiers with minimal bias current | SOIC-8 | 9,892 | |
| OPA129P | Ultra-low bias current difet operational amplifier | PDIP-8 | 9,676 |
Key Featrues
Ultra-Low Bias Current (100 fA): The OPA129P features an ultra-low input bias current of 100 femtoamperes (fA), which minimizes errors in high-impedance circuits. This makes it ideal for precision applications such as photodiode amplification, electrometer circuits, and sensor interfaces, where even minimal current leakage can significantly impact accuracy.
High Common-Mode Rejection Ratio (CMRR): With a CMRR of 118 dB, the amplifier effectively rejects common-mode noise, ensuring accurate signal amplification in noisy environments. This is particularly beneficial in industrial and automotive applications where electromagnetic interference (EMI) is prevalent.
Wide Supply Voltage Range (±5V to ±18V): The OPA129P supports a broad range of supply voltages, providing flexibility in various circuit designs. This versatility allows it to be used in both low-power and high-performance systems, enhancing its applicability across different use cases.
Low Input Offset Voltage (5 mV): The amplifier's low input offset voltage ensures minimal error in signal amplification, which is crucial for precision measurement and control systems. This feature enhances the overall accuracy and reliability of the circuit, making it suitable for high-precision applications.
Through-Hole Packaging (PDIP-8): The PDIP-8 package allows for easy integration into through-hole PCB designs, making it accessible for prototyping and educational purposes. This packaging also provides robust mechanical stability, which is advantageous in rugged environments.
High Common-Mode Rejection Ratio (CMRR): With a CMRR of 118 dB, the amplifier effectively rejects common-mode noise, ensuring accurate signal amplification in noisy environments. This is particularly beneficial in industrial and automotive applications where electromagnetic interference (EMI) is prevalent.
Wide Supply Voltage Range (±5V to ±18V): The OPA129P supports a broad range of supply voltages, providing flexibility in various circuit designs. This versatility allows it to be used in both low-power and high-performance systems, enhancing its applicability across different use cases.
Low Input Offset Voltage (5 mV): The amplifier's low input offset voltage ensures minimal error in signal amplification, which is crucial for precision measurement and control systems. This feature enhances the overall accuracy and reliability of the circuit, making it suitable for high-precision applications.
Through-Hole Packaging (PDIP-8): The PDIP-8 package allows for easy integration into through-hole PCB designs, making it accessible for prototyping and educational purposes. This packaging also provides robust mechanical stability, which is advantageous in rugged environments.
Applications
High-Impedance Sensor Interface: The OPA129P is perfect for interfacing with high-impedance sensors like pH electrodes, photodiodes, or piezoelectric sensors. Its ultra-low bias current ensures minimal loading on the sensor, preserving signal integrity and enabling precise measurements in medical, environmental, and scientific applications.
Precision Instrumentation Amplifier: With its low input offset voltage and high common-mode rejection ratio (CMRR), the OPA129P is ideal for use in precision instrumentation amplifiers. It can accurately amplify small differential signals in applications such as strain gauge bridges, thermocouple amplifiers, and data acquisition systems.
Low-Noise Signal Conditioning: The OPA129P's low input noise current density makes it suitable for low-noise signal conditioning in sensitive applications like photodiode transimpedance amplifiers or charge amplifiers for capacitive sensors. Its ability to handle low-level signals ensures high signal-to-noise ratios in optical and acoustic measurement systems.
Industrial Control Systems: The OPA129P's robust performance across a wide temperature range (-40°C to +125°C) and dual supply voltage capability make it a reliable choice for industrial control systems. It can be used in motor control circuits, process control systems, and automation equipment where precision and stability are critical.
Precision Instrumentation Amplifier: With its low input offset voltage and high common-mode rejection ratio (CMRR), the OPA129P is ideal for use in precision instrumentation amplifiers. It can accurately amplify small differential signals in applications such as strain gauge bridges, thermocouple amplifiers, and data acquisition systems.
Low-Noise Signal Conditioning: The OPA129P's low input noise current density makes it suitable for low-noise signal conditioning in sensitive applications like photodiode transimpedance amplifiers or charge amplifiers for capacitive sensors. Its ability to handle low-level signals ensures high signal-to-noise ratios in optical and acoustic measurement systems.
Industrial Control Systems: The OPA129P's robust performance across a wide temperature range (-40°C to +125°C) and dual supply voltage capability make it a reliable choice for industrial control systems. It can be used in motor control circuits, process control systems, and automation equipment where precision and stability are critical.
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