NSW-5
System Module UT5U
PAMS Technical Documentation
Page 39
Issue 1 10/00
Nokia Mobile Phones Ltd.
Parameter
Min
Typ/
Nom
Max
Unit
Gain, (LNA + mixer)
19
21
24
dB
Gain, LNA gain disabled
4
dB
Gain step
14
17
dB
Supply Voltage
2.7
2.8
2.9
V
Supply Current (LNA + Mixer)
17
22
mA
TDMA 1900MHz RX Front End
Receiver front end is integrated in the IC. It has RF amplifier with a gain
step and an active mixer. RX interstage filter is a dielectric filter.
Parameter
Min
Typ/
Nom
Max
Unit
Gain, (LNA + mixer)
19
21
23
dB
Gain, LNA gain disabled
4
dB
Gain step
14
17
dB
Supply Voltage
2.7
2.8
2.9
V
Supply Current (LNA + Mixer)
28
33
mA
1st IF Amplifier
The 1st IF filter is a SAW filter. The function of the filter is to provide at-
tenuation for the intermodulating signals
Analog IF parts
Analog mode IF–parts are included in EROTUS. Functional blocks: IF1
amplifier, a 2x–multiplier for LO signal, a mixer and a limiter amplifier
with RSSI. Specifications for analog mode IF–parts are in table 5. IF2
filter is a double 450 kHz ceramic filter.
Parameter
Min
Typ/
Nom
Max
Unit
Supply voltage
2.7
2.8
2.9
V
IF1 amp + mixer current cons.
6.5
8
mA
(+0.6 mA in d–mode)
6x freq. multipl. current cons.
1.8
2
mA
L RSSI current cons.
1.4
2.5
mA
Power up time
3.5
ms
RF input impedance single end
3.5
4//tbd
5
kohm//pF
RF input frequency range
116.19
MHz
Noise figure, IF1 amp + mixer
8
dB, RF = 116 MHz