W3020 Datasheet, PDF (10/44 Pages) Agere Systems – GSM Multiband RF Transceiver

W3020 GSM Multiband RF Transceiver
Advance Data Sheet
December 1999
LNA
The W3020 contains two on-chip LNAs, one to operate in the GSM900 band and one to operate in the
GSM1800/1900 bands. The GSM900 operation is combined with the GSM1800 band operation in a dual-band
terminal. Only one LNA operates at a time. The two on-chip LNAs with external matching networks are 50 Ω
single-ended input, single-ended output type. Switching between the LNAs is determined by the band bit B and
the gain control bit G0 in the TR register, as described in the Programming Information section.
Table 2. GSM900 LNA Performance
VDD = 2.7 Vdc; TA = 25 °C ± 3 °C.
Parameter
RF Input Band
Current Consumption (collector current)
Noise Figure*
Power Gain (942 MHz)*
Input 1 dB Compression Level
Input Return Loss
Off-state Gain
Min
Typ
Max Unit
925
—
960 MHz
—
3.5
— mA
—
2.0
— dB
—
20
— dB
–20
–15
— dBm
—
14
— dB
—
–51
— dB
* All gain and NF include matching losses. Not tested in production.
Table 3. GSM1800/1900 LNA Performance
VDD = 2.7 Vdc; TA = 25 °C ± 3 °C.
Parameter
RF Input Band:
GSM1800
GSM1900
Current Consumption (collector current)
Noise Figure*
Power Gain (1842 MHz)*
Input 1 dB Compression Level
Input Return Loss
Off-state Gain
* All gain and NF include matching losses. Not tested production.
Min
1805
1930
—
—
—
–20
—
—
Typ
—
—
3.5
3.0
19
–16.5
15
–38
Max Unit
1880
1990
—
—
—
—
—
—
MHz
MHz
mA
dB
dB
dBm
dB
dB
10
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