OPA1641AIDGKT

Instrumentation, Op Amps, Buffer Amps Overview

The OPA1641AIDGKT is a high-performance, JFET-input audio operational amplifier from the Texas Instruments SoundPlus family. It features four independent circuits in a single package, designed for low-noise and high-fidelity signal processing. The device operates within a supply voltage range of 2.5 V to 12 V, supporting rail-to-rail output swing. Key electrical characteristics include a gain-bandwidth product of 10 MHz, a slew rate of 13 V/µs, and an input voltage noise density of 4 nV/√Hz. It utilizes a 16-pin WSON package with dimensions of 3 mm by 3 mm, suitable for surface-mount applications.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• JFET input stage providing low bias current and high input impedance
• Rail-to-rail output capability for maximum dynamic range
• Low power consumption optimized for portable battery-powered devices
• High slew rate and bandwidth for accurate audio signal reproduction

Instrumentation, Op Amps, Buffer Amps Applications

• Portable audio players and digital music systems
• Headphone amplifiers and pre-amplifier stages
• Active filters and tone control circuits
• Microphone preamplifiers and line drivers

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'DGKT' against the official datasheet to confirm the tape-and-reel packaging quantity and temperature grade. Ensure the ordering part number matches the required pin configuration and RoHS compliance status. Cross-reference the manufacturer's latest documentation to validate availability and any potential design changes or obsolescence notices prior to procurement.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when a quad-channel solution is required for multi-channel audio paths in space-constrained designs. The JFET input architecture is preferred over bipolar inputs for applications demanding minimal input bias current. Compare the 10 MHz bandwidth against higher-speed op-amps if wider frequency response is needed, or consider lower-power alternatives if extended battery life is the primary constraint.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the OPA164x series of SoundPlus audio operational amplifiers. The series is characterized by its focus on high fidelity and low distortion for consumer electronics. The 'D' indicates a SOIC/WSON package variant, while 'GKT' specifies the reel packaging. It complements other TI audio products like the OPA1656 and OPA1658 for complete audio system designs.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Check for direct pin-compatible substitutes such as the OPA1656 or OPA1658 if channel count or performance metrics differ. Verify that alternative components maintain similar input noise and power consumption levels to ensure circuit compatibility without redesign.