Texas Instruments

OPA244PA

OPA244PA Description

The OPA244PA from Texas Instruments is a general-purpose operational amplifier (op-amp) belonging to the MicroAmplifier™ series, designed for precision and low-power applications. Housed in an 8-pin DIP (Through Hole) package, this single-channel op-amp operates over a wide supply voltage range of 2.2V to 36V, making it versatile for both battery-powered and industrial systems. With a gain bandwidth product of 430 kHz and a slew rate of 0.16V/µs, it balances moderate speed with ultra-low power consumption (50µA supply current). Its low input bias current (10 nA) and input offset voltage (700 µV) ensure accuracy in signal conditioning and sensor interfacing.

OPA244PA Features

• Ultra-Low Power: Consumes only 50µA, ideal for battery-operated devices.
• Wide Supply Range: 2.2V to 36V supports diverse applications.
• Low Input Bias Current: 10 nA minimizes errors in high-impedance circuits.
• Moderate Bandwidth: 430 kHz GBW suits low-frequency precision tasks.
• Robust Output Drive: 25 mA output current for driving small loads.
• High Voltage Tolerance: 36V max supply for industrial environments.
• RoHS3 Compliant & REACH Unaffected: Meets environmental regulations.

OPA244PA Applications

The OPA244PA excels in low-power, precision analog circuits, including:

• Sensor Signal Conditioning: Thermocouples, strain gauges, and RTDs benefit from its low noise and offset.
• Battery-Powered Systems: Portable medical devices, IoT sensors, and energy harvesters leverage its ultra-low current draw.
• Industrial Control: Process monitoring, 4-20mA loops, and actuator drivers due to its wide voltage range.
• Active Filters & Integrators: Suitable for low-frequency filtering with stable performance.

Conclusion of OPA244PA

The OPA244PA is a cost-effective, low-power op-amp offering a balance of precision and versatility. While obsolete, its wide supply range, low quiescent current, and robust performance make it a reliable choice for legacy designs or replacements in sensor interfaces, portable electronics, and industrial controls. Engineers seeking a general-purpose amplifier with moderate speed and ultra-low power will find it well-suited for niche applications where newer alternatives may not meet voltage or power constraints.