OPA404SG

Instrumentation, Op Amps, Buffer Amps Overview

The OPA404SG is a quad high-speed precision amplifier from Texas Instruments, utilizing BiFET technology. It features a CDIP-14 through-hole package and operates within a supply voltage range of 5 V to 18 V (single) or 10 V to 36 V (dual). Key electrical specifications include a gain-bandwidth product of 6.4 MHz, a slew rate of 35 V/us, and an input bias current of 1 pA. The device offers rail-to-rail output, 100 dB common-mode rejection ratio, and 100 dB voltage gain.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Quad configuration integrating four high-speed precision amplifiers in a single package
• BiFET input stage providing ultra-low input bias current for minimal signal loading
• Rail-to-rail output capability allowing full dynamic range utilization near supply rails
• High common-mode rejection ratio ensuring accurate differential signal processing

Instrumentation, Op Amps, Buffer Amps Applications

• Precision instrumentation amplifier circuits requiring high CMR
• Transimpedance amplifier configurations for low-noise current sensing
• Switched integrator applications in data acquisition systems
• Wideband signal conditioning for high-frequency precision measurements

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'SG' against the manufacturer's latest datasheet to confirm pinout and electrical tolerances. Note that this component is listed as End-of-Life with discontinuation notifications present. Ensure alternative sources are evaluated if long-term supply stability is required for production.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when a quad amplifier topology is needed alongside high speed and precision. The BiFET technology suits applications demanding low input bias current. Compare the 6.4 MHz bandwidth and 35 V/us slew rate against system requirements. Consider the CDIP-14 package constraints for PCB layout and thermal management compared to surface-mount alternatives.

Instrumentation, Op Amps, Buffer Amps Part Context

The OPA404 series represents Texas Instruments' high-performance BiFET amplifiers designed for precision applications. The OPA404SG specifically denotes the quad version in a ceramic dual in-line package. This family bridges the gap between general-purpose op-amps and specialized high-speed devices, offering balanced performance for complex analog signal chains.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with legacy designs using the OPA404KP or OPA404BG variants, noting differences in package type and mounting style.