OPA604APG4

Instrumentation, Op Amps, Buffer Amps Overview

The OPA604APG4 is a single-channel, FET-input audio operational amplifier manufactured by Texas Instruments. It features a gain-bandwidth product of 20 MHz and a slew rate of 25 V/µs. The device operates on dual power supplies ranging from ±4.5 V to ±24 V (9 V to 48 V total). Key electrical parameters include an input bias current of 5 pA, an input offset voltage of 1 mV, and a THD plus noise of 0.0003%. It is housed in an 8-pin PDIP package and supports operating temperatures from -25°C to +85°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• JFET input stage providing extremely low input bias current for minimal loading effects.
• Low distortion characteristics optimized for high-fidelity audio signal processing.
• High slew rate and wide bandwidth suitable for demanding audio applications.

Instrumentation, Op Amps, Buffer Amps Applications

• Professional audio preamplifiers
• Audio mixing consoles
• High-end audio recording equipment

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's current datasheet to confirm compliance with RoHS directives and lead-free status. Ensure the PDIP-8 package matches the target PCB footprint. Confirm that the component lifecycle status is active or acceptable for new designs, as older series may face obsolescence risks.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when low input bias current and high slew rate are critical for audio fidelity. Compare the 1 mV input offset voltage against requirements for precision DC coupling. Verify that the 20 MHz bandwidth exceeds the highest frequency of interest in the audio chain without introducing unnecessary noise.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the OPA604 family of JFET-input operational amplifiers designed specifically for audio applications. It serves as a single-channel variant within a lineup that includes dual-channel versions like the OPA2604. The G4 suffix typically indicates environmental compliance modifications compared to earlier iterations.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The OPA2604 is a dual-channel alternative offering similar electrical performance in a single package if two channels are required. Other low-distortion JFET op-amps from different manufacturers may serve as functional substitutes if pin compatibility and electrical specs align.