Acer 8940 manual Audio Amplifier Specification, Subwoofer Speaker Specification

Audio Amplifier

Item		Specification
Model	Panasonic 12947A
Package	48 pins QFP
Features	• Microsoft Windows 7® Compliant
	• High +90dB PSRR, Low -80dB THD+N
	• Class AB 2.2W (max.) Stereo BTL Speaker Amplifier
	• Built-in direct drive headphone amplifier within charge pump
	• AGC adjusted circuit function implement
	• STBY function support on speaker and headphone (countermeasure
		pop noise)
	•	RF noise prevention
	• Built-in over current protection
	• External adjustable speaker and headphone amplifier gain
Subwoofer Speaker
Item		Specification
Vendor and Model	Maxim MAX9737
Package	24pins TQFN
Features	• Spread-spectrum modulation enable for low EMI solution
	•	High PSRR 80dB
	• Up to 88% efficiency eliminate heatsink
	• Thermal and Output current protection
	• Shut-down mode current <1uA
	• Click and pop suppression
	• Turn on time < 10ms
	• Support 3W/4ohm power output
Power supply	8~28V
Front Speaker
Item		Specification
Vendor and Model	GMT 1453L
Package	16 pins TQFN
Weight	• Support 2W/4ohm power output
	•	Depop circuitry integrated
	• Stereo bridge-tied load (BTL)
	• Shut-down control available (<1uA)
Power supply	+5V
Center Speaker
Item		Specification
Vendor and Model	GMT 1442
Package	8 pins TDFN
Weight	• Support 2W/4ohm power output
	•	Depop circuitry integrated
	• Stereo bridge-tied load (BTL)
	• Shut-down control available (<1uA))

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