Audio subsystem offers complete solution

Suited for portable applications, the TPA2050D4 audio subsystem integrates a stereo Class D power amplifier and a stereo DirectPath headphone amplifier into a 2.61 x 2.61-mm WCSP package. The headphone amplifier eliminates the need for dc-blocking output capacitors to reduce component count, and the Class D amplifier provides a 1.4-W per channel output drive capability into 8-Ω loudspeakers with 90% efficiency to extend battery life in portable applications.

The subsystem has two stereo single-ended inputs that can be configured as one stereo differential input to achieve better common-mode noise rejection. In addition, the user can program different gains and modes via a 1.8-V compatible I2 C interface. ($2.30 ea/1,000 — available now.)

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