TFA9800J/N1,112

Overview

The TFA9800J is a Class-AB dual output stereo power amplifier designed for CRT and multimedia applications. It operates within a supply voltage range of 6.0 V to 18.0 V, delivering up to 7 W per channel into a 4 Ω load at 10% THD. The device features a fixed closed-loop voltage gain of 20 dB and includes integrated mute and standby functions with low current consumption. Protection mechanisms include AC/DC short-circuit safety and thermal shutdown above 150 °C junction temperature.

Feature Summary

• Integrated Class-AB dual output amplifier architecture
• Fixed voltage gain configuration
• Mute and standby switch functionality
• Short-circuit and thermal protection circuits

Applications

• CRT television audio systems
• Multimedia speaker amplification
• Single-ended stereo audio output stages

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest documentation to confirm package type and tape/reel specifications. Confirm component authenticity through authorized distribution channels. Check for obsolescence status as this datasheet indicates preliminary data from 2006. Ensure design compatibility with legacy Philips/NXP semiconductor specifications.

Selection Notes

Select this component for applications requiring a simple, high-power Class-AB solution with minimal external components. Consider the fixed 20 dB gain when designing input stages. Evaluate thermal management requirements given the 4 K/W junction-to-case resistance. Verify that the DBS9P through-hole package fits the target PCB layout constraints.

Part Context

The TFA9800J belongs to the family of discrete power amplifiers originally developed by Philips Semiconductors. It serves as a dedicated audio output stage for consumer electronics, specifically targeting cathode-ray tube displays and standalone multimedia devices where robust power delivery and straightforward integration are prioritized over digital control interfaces.

Replacement Considerations

No public confirmed substitute part numbers are documented in the provided source material.