Texas Instruments

OPA137PA

OPA137PA Description

The OPA137PA is a general-purpose operational amplifier (op-amp) from Texas Instruments, part of the MicroAmplifier™ series. This through-hole mounted device is housed in a tube package and features a single circuit configuration. It operates within a supply voltage range of 4.5 V to 36 V, making it suitable for a wide variety of power supply conditions. The OPA137PA is designed to deliver a gain bandwidth product of 1 MHz, ensuring stable performance across a broad frequency spectrum. With a slew rate of 3.5 V/µs, it can handle fast signal transitions efficiently.

OPA137PA Features

• Low Input Bias Current: The OPA137PA boasts an extremely low input bias current of 5 pA, which minimizes the impact of the op-amp on the input signal source, making it ideal for high-impedance applications.
• Wide Supply Voltage Range: With a supply voltage span ranging from 4.5 V to 36 V, the OPA137PA is versatile and can be used in systems with varying power supply requirements.
• High Output Current: The device can provide up to 60 mA of output current per channel, enabling it to drive moderate to high load applications effectively.
• Low Input Offset Voltage: The input offset voltage is maintained at a low 2.5 mV, ensuring high accuracy and precision in signal processing.
• Low Supply Current: The OPA137PA operates with a supply current of only 220 µA, which is advantageous for power-sensitive applications.
• Compliance and Reliability: The OPA137PA is REACH unaffected and ROHS3 compliant, ensuring environmental sustainability and regulatory adherence. It also has a moisture sensitivity level (MSL) of 1, indicating unlimited exposure to moisture, enhancing its reliability in various environmental conditions.

OPA137PA Applications

The OPA137PA is well-suited for a range of applications due to its robust performance and versatile specifications. Some specific use cases include:

• Signal Conditioning: Ideal for conditioning signals in sensor interfaces, where low input bias current and low offset voltage are crucial for maintaining signal integrity.
• Audio Amplifiers: The wide supply voltage range and high output current make it suitable for driving audio signals in consumer electronics and professional audio equipment.
• Industrial Control Systems: The device's ability to handle a wide range of supply voltages and its low power consumption make it a reliable choice for industrial automation and control systems.
• Medical Equipment: The low input bias current and high precision are beneficial for medical devices that require accurate signal processing, such as ECG machines and other diagnostic equipment.

Conclusion of OPA137PA

The OPA137PA from Texas Instruments is a versatile and reliable operational amplifier with a wide range of applications. Its low input bias current, wide supply voltage range, and high output current make it a standout choice for various electronic systems. Despite being marked as obsolete, the OPA137PA continues to offer significant advantages in terms of performance and reliability. For applications requiring high precision and low power consumption, the OPA137PA remains a valuable component in the electronics industry.