TDA8541T/N1,118

Overview

The TDA8541T/N1,118 is a single-channel Bridge-Tied Load (BTL) audio power amplifier manufactured by NXP Semiconductors. It delivers up to 1.2 W of output power into an 8 Ω load at a 5 V supply with 10% THD. The device operates within a supply voltage range of 2.2 V to 18 V and features a complementary PNP-NPN output stage. Key electrical parameters include a quiescent current of 81 mA typical at 5 V, standby current below 10 μA, and supply voltage ripple rejection of 50 dB. It offers gain adjustment from 6 dB to 30 dB via external resistors and includes thermal shutdown and short-circuit protection.

Feature Summary

• Bridge-Tied Load architecture with low saturation voltage output stage
• CMOS-compatible standby and mute control logic for noise suppression
• Integrated thermal shutdown and short-circuit protection against ground, VCC, and across the load
• High supply voltage ripple rejection capability

Applications

• Portable consumer products
• Personal computers
• Telephony systems

Procurement Notes

Verify component authenticity through authorized NXP distributors or certified suppliers. Confirm package integrity and pin alignment upon receipt. Review the latest product specification for any updates regarding quality specifications or environmental compliance standards before integration into final designs.

Selection Notes

Select this amplifier for applications requiring a simple BTL configuration with minimal external components. Ensure the load impedance matches the 8 Ω design target for optimal power delivery. Verify that the operating supply voltage remains within the 2.2 V to 18 V range and that thermal dissipation requirements are met given the SO8 package thermal resistance.

Part Context

This component belongs to the TDA8541 family of audio amplifiers. The 'T' suffix indicates the SO8 plastic small outline package variant, while 'N' denotes the DIP8 dual in-line package. The '/N1,118' suffix specifies the specific packaging and ordering code for the surface-mount version produced by NXP Semiconductors.

Replacement Considerations

No official replacement part numbers are documented in the provided datasheet. Designers should consult NXP directly for current portfolio alternatives if this obsolete component requires substitution.

FAQ

How is the amplifier gain configured?

The closed-loop voltage gain can be set between 6 dB and 30 dB using external feedback resistors connected to the input pins.

What determines the operating mode of the device?

The MODE pin controls the operating state. A voltage below 0.5 V enables operation, between 1.5 V and VCC-1.5 V activates mute, and above VCC-0.5 V engages standby mode.