Acer Aspire 8935G Service Manual page 41

Audio Amplifier
Item
Model
Package
Features
Subwoofer Speaker
Item
Vendor and Model
Package
Features
Power supply
Front Speaker
Item
Vendor and Model
Package
Weight
Power supply
Center Speaker
Item
Vendor and Model
Package
Weight
Chapter 1
Panasonic 12947A
48 pins QFP
• Microsoft Windows Vista 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
Maxim MAX9737
24pins TQFN
• 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
8~28V
GMT 1453L
16 pins TQFN
• Support 2W/4ohm power output
• Depop circuitry integrated
• Stereo bridge-tied load (BTL)
• Shut-down control available (<1uA)
+5V
GMT 1442
8 pins TDFN
• Support 2W/4ohm power output
• Depop circuitry integrated
• Stereo bridge-tied load (BTL)
• Shut-down control available (<1uA))
Specification
Specification
Specification
Specification
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