TDA8542AT/N1,112

Overview

The TDA8542AT is a two-channel audio power amplifier delivering 2 × 1.5 W output to an 8 Ω load at 6 V supply. It features Bridge-Tied Load (BTL) amplifiers with complementary PNP-NPN output stages and standby/mute logic. The device operates within a supply voltage range of 2.2 V to 18 V, with a typical quiescent current of 15 mA and standby current under 10 μA. Gain is adjustable from 6 dB to 30 dB via external resistors. It includes protection against short circuits, thermal overload, and electrostatic discharge.

Feature Summary

• Bridge-Tied Load architecture with low saturation voltage output stage
• CMOS-compatible standby and mute control logic
• Integrated thermal shutdown and short-circuit protection
• High supply voltage ripple rejection capability

Applications

• Portable consumer products
• Personal computers
• Motor-driver servo systems

Procurement Notes

Verify the specific ordering suffix N1,112 against the manufacturer's current database to confirm package type and compliance status. Ensure the component matches the SO20 plastic small outline package description. Cross-reference the datasheet revision date to confirm technical specifications align with design requirements before finalizing procurement orders.

Selection Notes

Select this component for designs requiring dual-channel BTL amplification in compact spaces. The adjustable gain range allows flexibility for various input signal levels. Consider the thermal resistance characteristics when designing PCB layouts to ensure adequate heat dissipation. Verify that the operating temperature range meets the environmental conditions of the target application.

Part Context

This part belongs to the TDA85xx series of audio amplifiers manufactured by NXP USA Inc. It is designed as a cost-effective solution for low-power audio applications. The device integrates both left and right channel amplification into a single 20-pin package, reducing the overall component count and board space required for stereo audio systems.

Replacement Considerations

Consult official substitution lists for compatible alternatives. Verify pin compatibility and electrical parameters before replacing.