W3020 Datasheet, PDF (17/44 Pages) Agere Systems – GSM Multiband RF Transceiver

Advance Data Sheet
December 1999
W3020 GSM Multiband RF Transceiver
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
VDD = 2.7 V; TA = 25 °C ± 3 °C.
Parameter
Min
Charge Pump Supply (VDDC2)
2.7
Frequency
—
LO2 Input Level
–6
Clock Reference Frequency
—
Clock Input Level
0.4
Reference Frequency (at phase detector)
—
Phase Accuracy (loop bandwidth 10 kHz)
—
Phase Detector Gain (VDD = 2.85 V)
—
Powerdown Charge Pump Supply Current (VDDC2) —
Phase Detector Voltage
0.5
Note: Reference sidebands determined by external loop filter components.
Typ
2.85
540
–3
13.0
1
1.0
1.3
200
—
1.3
Max
3.0
—
0
—
—
—
—
—
1
VDDC2 – 0.5
Unit
V
MHz
dBm
MHz
Vp-p
MHz
°rms
µA/cycle
mA
V
LO1 Input Buffer Specification
Table 10. LO1 Performance
VDD = 2.7 V; TA = 25 °C ± 3 °C.
Frequency Range:
GSM900
GSM1800
GSM1900
Input Power Level
Input Noise Figure
Parameter
Min
1150
1530
1660
–6
—
Typ
Max Unit
—
1230 MHz
—
1610 MHz
—
1730 MHz
–3
— dBm
8
10
dB
Lucent Technologies Inc.
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