LG E900 Service Manual page 33

3. TECHNICAL BRIEF
3.5.4 W-CDMA 1900 POWER AMPLIFIER (U103: SKY77702)
The SKY77702 Power Amplifier Module (PAM) is a fully matched 10-pad surface mount module developed for
Wideband Code Division Multiple Access (WCDMA) applications. This small and efficient module packs full
1850–1910 MHz bandwidth coverage into a single compact package. Because of high efficiencies attained
throughout the entire power range, the SKY77702 delivers unsurpassed talk-time advantages. The SKY77702
meets the stringent spectral linearity requirements of High Speed Downlink Packet Access (HSDPA), High
Speed Uplink Packet Access (HSUPA), and Long Term Evolution (LTE) data transmission with high power
added efficiency. A directional coupler is integrated into the module thus eliminating the need for any
external coupler.
VEN (5)
VMODE_0 (4)
VMODE_1 (3)
VCC2 (10)
VCC1 (1)
RF_IN (2)
GND (7)
CPL_OUT (6)
CPL_IN (8)
LGE Internal Use Only
SKY77701 Features
Driver Stage
Power Stage
Bias
Bias
Inter-Stage
Input Match
DA
Match
SKY77702 Functional Block Diagram.
MODULE
MMIC
Output
PA
Match
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(9) RF_OUT
Only for training and service purposes