Medium Power (10-100W) Class D Amplifier Chips
Vendor	Device/Series	Status	Power (W)	Channels	PSSR***	Input	Balanced in	Supply	Modulation*	DSP	Vendor
TI	TPA312xD2	active	10-25	2	60-70	analog	avail	single	AD	no	digikey, mouser
TI	TPA310xD2	active	10-25	2	60-70	analog	avail	single	AB	no	digikey, mouser
TI	TAS570X**	active	20	2-4	0-60	I2S	---	single	AD	yes	digikey, mouser
Monolithic Power	MPS77xx	active	20-50	1-2				single		no
Maxim	MAX9744	active	20					single	AB	no
NXP	TDA8920	active	50-150	1-2			yes	dual	AD	no	digikey, mouser
NXP	TDA8932	hard to get?	15	2	50	analog	yes	sing/dual	AD	no	?
ST (Apogee)	STA32X	active	30-60	2.1	low		---	single	DDX	yes	gerberelec
Cirrus	CS4525	active	30	2.1	40	analog or I2S	no	single	delta-sigma	yes
Cirrus	CS3511	active	11	2	55		yes	single	delta-sigma	no
Analog Devices	ADAU1513	active						single	delta-sigma	no
Analog Devices	AD1994	obsolete						single	delta-sigma	no
Microsemi	LX1708	active						single		no
Neofidelity	NTP-3000	?	15/30	2.1	?	I2S	---	single	AD?	yes	?
Tripath	TA2021	Co. bankrupt	10	2	80	analog	no	single	"Class T"	no	profusionplc
Sanyo	STK428	active	70	2	?	analog	yes	dual	AD	no	pacificsemi, audiolab
*See TI application report SLOA119A at:  http://focus.ti.com/lit/an/sloa119a/sloa119a.pdf
**Many devices in product family; some with DSP, some with closed-loop control for lower PSRR
***Low PSRR requires use of a regulated supply or very heavy filtering