TDA8559T/N1,512

Overview

The TDA8559T/N1,512 is a stereo amplifier IC manufactured by NXP USA Inc. in a 16-SO package. It operates over a supply voltage range of 1.9 V to 30 V with a typical quiescent current of 2.75 mA and standby current under 10 μA. In single-ended stereo mode with a 32 Ω load, it delivers 35 mW output power at 26 dB gain. In Bridge-Tied Load (BTL) mono mode with a 25 Ω load, it provides 140 mW output power at 32 dB gain.

Feature Summary

• Operates with very low quiescent current suitable for battery-powered applications
• Features differential inputs and an internal voltage buffer allowing use without loudspeaker capacitors
• Includes mute and standby modes to prevent switch-on/off clicks
• Protected against short circuits to ground, supply voltage, and across the load

Applications

• Portable telephones
• MP3 players
• Portable audio devices
• Mains fed equipment

Procurement Notes

Verify component authenticity through authorized distributors or official manufacturer channels. Confirm the specific ordering suffix matches the required package variant. Check for RoHS compliance status as indicated in the datasheet. Ensure the part number corresponds to the discontinued product status if sourcing from secondary markets.

Selection Notes

Select this component for designs requiring a wide operating voltage range from 1.9 V to 30 V. It is appropriate for low-power stereo headphone amplification or mono speaker driving in BTL configuration. Consider the SO16 package constraints and thermal resistance when designing the PCB layout for heat dissipation.

Part Context

This device belongs to the TDA855 series of audio amplifiers. It is designed as a low-voltage stereo headphone amplifier that can also function as a line driver or mono amplifier. The internal dynamic quiescent current controller reduces crossover distortion while maintaining low power consumption.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.