TPA6203A1DGN

Audio Amplifiers Overview

The TPA6203A1DGN is a 1.25-W mono fully differential Class-AB audio power amplifier by Texas Instruments, housed in an 8-pin PowerPAD MSOP package. It operates from a single supply voltage ranging from 2.5 V to 5.5 V and delivers 1.25 W into an 8-Ω load at 5 V with 1% THD+N. The device draws a typical quiescent current of 1.7 mA and features shutdown control with less than 10 μA standby current. It offers high PSRR (90 dB) and CMRR, supporting direct battery operation for portable devices.

Audio Amplifiers Feature Summary

• Fully differential architecture eliminates input coupling capacitors and reduces RF rectification interference.
• Integrated thermal protection and fast startup time minimize audible pops during power cycles.
• Optional bypass capacitor design simplifies circuit layout while maintaining high power supply rejection.
• Shutdown control enables low-power standby modes suitable for battery-operated handheld applications.

Audio Amplifiers Applications

• Wireless cellular handsets
• Personal digital assistants (PDAs)
• Portable media players

Audio Amplifiers Procurement Notes

Verify the specific DGN suffix indicates the 8-pin PowerPAD MSOP package configuration. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Ensure the ordering part number matches the required tape-and-reel or tube packaging format for your assembly process. Cross-reference the datasheet revision date to confirm parameter consistency.

Audio Amplifiers Selection Notes

Select this component when space-constrained designs require a fully differential output to drive speakers without large coupling capacitors. It is suitable for systems operating between 2.5 V and 5.5 V where low quiescent current is critical. Consider the thermal performance of the PowerPAD MSOP package for heat dissipation requirements in enclosed enclosures.

Audio Amplifiers Part Context

This device belongs to the TPA6203A1 family of mono audio amplifiers. It is distinct from stereo variants like the TPA6206A1 and higher-power models such as the TPA6211A1. The DGN package variant specifically utilizes the 3 mm x 3 mm MSOP form factor with an exposed thermal pad for improved heat transfer compared to standard plastic packages.

Audio Amplifiers Replacement Considerations

TPA6203A1DRBR: Same electrical specifications but in an 8-pin SON package. TPA6203A1ZQVR: Same electrical specifications but in a MicroStar Junior BGA package. Verify pinout compatibility and thermal management requirements when substituting different package types.

Audio Amplifiers FAQ

Is the C(BYPASS) capacitor mandatory for operation?

No, the C(BYPASS) capacitor is optional due to the fully differential design. However, adding it improves the power supply rejection ratio (PSRR).

What is the purpose of the SHUTDOWN pin?

The SHUTDOWN pin controls the device's power state. Driving it low places the amplifier in shutdown mode, reducing supply current to less than 10 μA.

Can this amplifier drive a 4-ohm speaker?

Yes, but the maximum output power will be lower than the 1.25 W rating specified for an 8-ohm load. Thermal dissipation must be carefully managed.