OPA4140AIDR

Instrumentation, Op Amps, Buffer Amps Overview

The OPA4140AIDR is a quad-channel precision operational amplifier manufactured by Texas Instruments, housed in a 14-pin SOIC package. It features a gain-bandwidth product of 11 MHz and a slew rate of 20 V/µs. The device operates on supply voltages ranging from 4.5 V to 36 V. Key electrical specifications include an input bias current of 500 fA, an input voltage noise density of 5.1 nV/√Hz, and a common-mode rejection ratio of 140 dB. It supports rail-to-rail input and output capabilities with a shutdown function.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Quad-channel architecture providing four independent low-noise amplifiers in a single package
• Rail-to-rail input and output capability for maximum dynamic range utilization
• Ultra-low input bias current characteristic suitable for high-impedance sensor interfaces
• Integrated shutdown control for power management optimization

Instrumentation, Op Amps, Buffer Amps Applications

• Precision data acquisition systems requiring multi-channel signal conditioning
• Medical instrumentation utilizing low-noise amplification for biological signals
• Industrial process control applications involving transducer interface circuits
• Active filtering stages in audio and measurement equipment

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'IDR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the A-grade temperature rating aligns with the intended operating environment specifications. Ensure compatibility with the target PCB footprint dimensions for the SOIC-14 package before finalizing procurement orders.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when multiple channels of low-noise amplification are required within a compact surface-mount form factor. The rail-to-rail performance makes it suitable for single-supply applications where maximizing signal swing is critical. Consider the 11 MHz bandwidth as sufficient for most general-purpose precision applications while maintaining low power consumption characteristics.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the OPA4140 family of JFET-input operational amplifiers designed for high-precision applications. The quad configuration distinguishes it from single or dual-channel variants like the OPA2140 or OPA1140. The SOIC-14 package offers a balance between pin count and board space efficiency compared to larger DIP packages.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

• OPA4140AID

Instrumentation, Op Amps, Buffer Amps FAQ

Does the OPA4140AIDR support rail-to-rail operation?

Yes, the device features both rail-to-rail input and rail-to-rail output capabilities.

What is the input bias current specification?

The input bias current is specified at 500 fA.