IS31AP4991-GRLS2-TR

Overview

The IS31AP4991-GRLS2-TR is a monolithic Class-AB audio power amplifier in SOP-8 package. It delivers 1.2W continuous RMS output into an 8Ω load at 5V supply. The device features an active-low standby mode reducing current to under 1μA and includes internal thermal shutdown protection. Operating voltage ranges from 2.7V to 5.5V. Key electrical parameters include 65dB PSRR at 217Hz, near-zero click-and-pop performance, and ultra-low distortion of 0.025% at 0.5W.

Feature Summary

• Active-low standby mode for ultra-low power consumption
• Internal thermal shutdown protection
• Near-zero click-and-pop performance
• Unity-gain stable with configurable external gain

Applications

• Mobile phones
• Portable electronic devices
• Notebook computers

Procurement Notes

Verify the specific ordering suffix '-GRLS2-TR' corresponds to the SOP-8 lead-free package with a 2500-unit reel quantity. Confirm the revision status, as datasheet Rev. C indicates an NRND watermark. Ensure compatibility with industrial temperature range specifications (-40°C to +85°C) before finalizing procurement.

Selection Notes

Select this component for single-ended or BTL audio applications requiring high efficiency and low quiescent current. The SOP-8 package suits space-constrained designs. Consider the wake-up time dependency on bypass capacitor size when designing startup sequences. Verify input impedance matching with RIN and RF resistors for desired gain settings.

Part Context

This part belongs to the IS31AP4991 series of 1.2W audio amplifiers. The -GRLS2-TR suffix specifically denotes the SOP-8 surface-mount package variant. A corresponding MSOP-8 version exists (IS31AP4991-SLS2-TR). Both variants share identical electrical characteristics and pinouts.

Replacement Considerations

The IS31AP4991-SLS2-TR serves as a direct package alternative in MSOP-8 format. Cross-reference pinout and electrical specs carefully when substituting with other Class-AB mono amplifiers.