- 31/132-
LG Electronics Inc.
RFT6150 Cellular and PCS CDMA RF Specifications
Parameter
Condition
Min.
Type.
Max.
Units
Rated Output Power
Average CDMA Cellular
Average CDMA PCS
7
9
dBm
dBm
Min Output Power
Average CDMA Cellular
Average CDMA PCS
-75
-75
dBm
dBm
RX band noise power
CDMA Cellular
CDMA PCS
-136
-133
dBm/Hz
ACPR
Cellular: Fc
±
885kHz
PCS : Fc
±
1.25MHz
-56
-57
dBc/30kHz
1.3.2 Power Amplifier(U108, U114)
The Dual power amplifier that can be used in the PCS and CDMA mode has linear amplification capability and high
efficiency. For higher efficiency, it is made up of one MMIC (Monolithic Microwave Integrated Circuit) for which
RF input terminal and internal interface circuit are integrated onto one IC after going through the AlGaAs/GaAs HBT
(heterojunction bipolar transistor) process. The module of power amplifier is made up of an output end interface
circuit including this MMIC. The maximum power that can be inputted through the input terminal is +10dBm and
conversion gain is about 26.5dB. RF transmit signals that have been amplified through the power amplifier are sent to
the duplexer.
.
1.4 Description of Frequency Synthesizer Circuit
1.4.1 Voltage Control Temperature Compensation Crystal Oscillator (VCTCXO, X101)
The temperature variation of mobile phone can be compensated by VCTCXO. The reference frequency of a mobile
phone is 19.2 MHz. The receiver frequency tuning signals called TRK_LO_ADJ from MSM as 0.5 V~2.5 V DC via
R and C filter in order to generate the reference frequency of 19.2 MHz and input it into the frequency synthesizer.
Frequency stability depending on temperature is
±
2.0 ppm.
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Summary of Contents for VX9700
Page 26: ... 25 132 LG Electronics Inc VX9700 28 Powering Down Restart Z 3 X B O X C O M ...
Page 59: ... 58 132 LG Electronics Inc VX9700 Waveform Waveform F106 pin2 DP2 pin2 Z 3 X B O X C O M ...
Page 154: ...CON104 Z 3 X B O X C O M ...
Page 156: ...Z 3 X B O X C O M ...
Page 159: ...CON809 SW101 SW102 Z 3 X B O X C O M ...
Page 160: ...CON808 Z 3 X B O X C O M ...
Page 162: ...CON809 SW104 Z 3 X B O X C O M ...
Page 163: ...CON808 Z 3 X B O X C O M ...
Page 165: ...SW1 CON2 Z 3 X B O X C O M ...
Page 166: ...CON1 Z 3 X B O X C O M ...
Page 167: ... 15 132 LG Electronics Inc VX9700 Appendix 3 Part List VX9700 Part List Z 3 X B O X C O M ...
Page 168: ... 16 132 LG Electronics Inc VX9700 Appendix 4 Components Layout Z 3 X B O X C O M ...
Page 174: ...Z 3 X B O X C O M ...