What is the OPA140AIDR?
The OPA140AIDR is a high-precision JFET-input operational amplifier from Texas Instruments, designed to deliver low noise, low offset, and excellent stability. It comes in an 8-SOIC package and is optimized for applications that require exceptional accuracy and fast response.
What are the key features of the OPA140AIDR?
This device offers very low offset (120 µV), extremely low offset drift (1 µV/°C max), and low input bias current (10 pA max). It also provides low noise performance, including 5.1 nV/√Hz broadband noise and 250 nVPP 1/f noise. With a 20 V/µs slew rate, wide supply range (4.5 V to 36 V or ±2.25 V to ±18 V), rail-to-rail output, and no phase reversal, the OPA140AIDR is engineered for precision and reliability.
What types of applications is the OPA140AIDR used for?
It is commonly used in precision instrumentation, high-resolution data acquisition, medical equipment, active filters, photodiode amplifiers, and sensor signal conditioning. Its low noise and high accuracy make it suitable for systems where clean, stable analog performance is critical.
Why is the JFET input important?
JFET technology provides extremely low input bias current, which helps maintain measurement accuracy when working with high-impedance sensors or small signals. This makes the OPA140AIDR ideal for applications such as transimpedance amplifiers and charge-based sensing.
Can the OPA140AIDR operate on a single supply?
Yes. It supports both single-supply (4.5 V to 36 V) and dual-supply (±2.25 V to ±18 V) operation, giving designers flexibility to use it across a wide range of power architectures.
What makes this amplifier suitable for precision designs?
Its combination of low drift, low offset, low noise, fast slew rate, and stable rail-to-rail output ensures consistent, accurate analog performance. These features reduce error sources and improve measurement fidelity in demanding circuits.
