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參數資料
型號: W3020
英文描述: GSM Multiband RF Transceiver
中文描述: 手機多頻段射頻收發器
文件頁數: 17/44頁
文件大小: 409K
代理商: W3020
Advance Data Sheet
December 1999
W3020 GSM Multiband RF Transceiver
Lucent Technologies Inc.
17
LO2 Specification
The W3020 contains an input buffer for an external VCO and a PLL for generation of a second LO signal at
540 MHz. The output of the buffer is fed to the receive and transmit circuits, where the signal is divided to the IF
frequency. The phase noise includes contributions from VCO buffers to the transmit and receive circuits.
Table 9. LO2 Performance
V
DD
=
2.7 V; T
A
= 25 °C ± 3 °C.
Parameter
Min
2.7
–6
0.4
0.5
Typ
2.85
540
–3
13.0
1
1.0
1.3
200
1.3
Max
3.0
0
1
Unit
V
MHz
dBm
MHz
Vp-p
MHz
°
rms
μ
A/cycle
mA
V
Charge Pump Supply (V
DD
C2)
Frequency
LO2 Input Level
Clock Reference Frequency
Clock Input Level
Reference Frequency (at phase detector)
Phase Accuracy (loop bandwidth 10 kHz)
Phase Detector Gain (V
DD
= 2.85 V)
Powerdown Charge Pump Supply Current (V
DD
C2)
Phase Detector Voltage
V
DD
C2
– 0.5
Note: Reference sidebands determined by external loop filter components.
LO1 Input Buffer Specification
Table 10. LO1 Performance
V
DD
=
2.7 V; T
A
= 25 °C ± 3 °C.
Parameter
Min
Typ
Max
1230
1610
1730
10
Unit
Frequency Range:
GSM900
GSM1800
GSM1900
nput Power Level
nput Noise Figure
1150
1530
1660
–6
–3
8
MHz
MHz
MHz
dBm
dB
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