TDA8552TS/N1,118

Overview

The TDA8552TS/N1,118 is a two-channel audio power amplifier delivering 2 x 1.4 W into an 8 Ω load at 5 V supply. It features digital volume control with 64 steps and headphone sensing that switches BTL to SE mode. The device operates on a 2.7 V to 5.5 V supply, drawing 14 mA quiescent current in BTL mode. Gain is selectable at 20 dB or 30 dB via the GAINSEL pin. It includes standby, mute, short-circuit, and thermal protection.

Feature Summary

• Digital volume control with up/down pulse interface and auto-repeat function
• Headphone sensing logic for automatic switching between BTL and single-ended modes
• Integrated standby and mute functions controlled by CMOS compatible levels
• Output stage protected against short circuits to ground, VDD, and across the load

Applications

• Portable consumer products
• Notebook computers
• Communication equipment

Procurement Notes

Verify the specific SSOP20 package variant (TDA8552TS) matches the design footprint. Confirm the ordering suffix /N1,118 corresponds to the required reel quantity and RoHS compliance status. Ensure the gain selection pin configuration aligns with the desired 20 dB or 30 dB setting before finalizing procurement.

Selection Notes

Select this component for applications requiring integrated digital volume adjustment without external microcontrollers. The headphone sense feature simplifies jack detection circuitry. Consider the SSOP20 thermal resistance when designing PCB copper areas to ensure adequate heat dissipation for the target ambient temperature conditions.

Part Context

This part belongs to the TDA8552 family of BTL audio amplifiers. The TS suffix indicates the 20-pin shrink small outline package (SSOP20), which differs from the standard SO20 package in physical dimensions and thermal characteristics. Both variants share identical electrical functionality and pinout configurations.

Replacement Considerations

TDA8552T/N1,112

FAQ

How does the headphone sensing function operate?

When a headphone is plugged in, the HPS pin voltage rises to VDD, causing the amplifier to switch from BTL to SE mode. This turns off the slave outputs connected to the loudspeakers, attenuating their signal by approximately 80 dB while reducing quiescent current.

What is the maximum gain setting available?

The maximum voltage gain can be set to either 20 dB or 30 dB. This selection is determined by hard-wiring the GAINSEL pin to ground for 20 dB or to VDD for 30 dB.