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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3. TECHNICAL BRIEF
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3.1.6 Mixed Signal
• Improved audio performance
• Loudspeaker Audio Class D Amplifier, 700 mW@8 Ω mono for hands-free and ringing
• Stereo Headset 2x30 mW@16 Ω w/o coupling C
• Mono Earpiece 100 mW@16 Ω
• Digital microphone supported
• Differential microphone inputs
3.1.7 FM Radio
• Integrated FM radio
– FM Stereo RDS Receiver
– Sensitivity 2 μVEMF
– Support for US & EU bands
– Stereo recording
3.1.8 Power Management
• Direct-to-Battery Connection
–LDOs(incl. capless)
– DC/DC step-down converter
– DC/DC step-up for white LED supply
• Battery Type
–Li-Ion
–Li-Polymer
• Charging control
– Battery temperature
– Watchdog protection
– Start-up on flat battery
•External Charger
– Switch mode
• USB battery charging
– USB charging spec 1.0 compliant
•Backlight
– Up to 4 serial white LEDs (integrated LDO)
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