Only For Training And Service Purposes - LG GM200 Service Manual

General Description
The AD6725-ATLAS3HLITE baseband transmit section supports the following mobile station GMSK
modulation power classes:
• GSM 900/850 power classes 4 and 5,
• DCS 1800 power classes 1 and 2, and
• PCS 1900 power classes 1 and 2.
The AD6725-ATLAS3HLITE baseband transmit section supports the following mobile station 8-PSK
modulation power classes:
• GSM 900/850 power classes E2 and E3,
• DCS 1800 power classes E2 and E3, and
• PCS 1900 power classes E2 and E3.
The AD6725-ATLAS3H LITE baseband receive section supports GMSK and 8-PSK applications.
The AD6725-ATLAS3H LITE auxiliary section provides a voltage reference, an automatic frequency control
DAC, an auxiliary ADC, and light controllers. The auxiliary ADC provides two
channels for measuring temperature using discrete external devices placed in critical
locations. The AD6725-ATLAS3H LITE audio section provides 8 kHz and 16 kHz sampling rates forvoiceb and
data input and output and provides nine standard sample rates ranging from
8kHz to 48 kHz for personal audio output on two PCM Audio serial ports. The two Audio
serial ports allow support for concurrency. The AD6725-ATLAS3H LITE power management section provides
voltage regulators for digital and analog components, a battery charger, battery
protection circuitry, and power supply activation logic. The AD6725-ATLAS3H LITE digital processor interface
provides serial ports for control data, baseband transmit and receive data, and
two for audio data.
LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.

Only for training and service purposes

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3. TECHNICAL BRIEF
LGE Internal Use Only