The XA9221D is a high efficiency 2 channel bridged-tied load (BTL) Class-D audio power amplifier, driving stereo speakers at up to 10W/CH with 6? or 8? Load. The XA9221D features a differential input architecture offering improved noise immunity over a single-ended (SE) input amplifier.

Advanced EMI Suppression Technology with Spread Spectrum Control enables the use of inexpensive ferrite bead filters at the outputs while meeting EMC requirements for system cost reduction.

XA9221D is not only fully protected against shortsand overload, an adjustable power limiter and a DC detection circuit for protection of the connected speakers. The DC detect and Pin-to-Pin, Pin-to-Ground and Pin-to-Power Short Circuit protection circuit protect the speakers from output DC and pin shorts caused in production. The short circuit protection and thermal protection includes an auto recovery feature.

XA9221D is available in thermally efficient 28-pin ETSSOP package and will be able to output full power on a 2-layer PCB.

FEATURES

Wide Supply Voltage: 4.5V to 14.5V

Enhanced Modulation Scheme Reduces EMI Emission

Loudspeaker power from 12V supply

BTL Mode: 8W/CH into 8Ω@1% THD+N 

BTL Mode: 10W/CH into 6Ω@<1% THD+N BTL Mode: 12W/CH into 4Ω@<1% THD+N PBTL Mode: 16W/CH into 4Ω@1% THD+N

Loudspeaker power from 12V supply

BTL Mode: 10W/CH into 8Ω@10% THD+N BTL Mode: 13W/CH into 6Ω@10% THD+N BTL Mode: 15W/CH into 4Ω@10% THD+N PBTL Mode: 20W/CH into 4Ω@10% THD+N

Differential Inputs or Single-Ended input

Speaker Protection Circuitry

26-dB Fixed Gain

Power Limit Function

Thermal and Short-Circuit Protection

28-pin ETSSOP Package with Thermal Pad RoHS compliant and 100% lead(Pb)-free Halogen-Free

APPLICATIONS

Televisions

USB Speaker

Mini Speaker

Consumer Audio Equipment