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Nokia 5110 Instruction De Maintenance

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Page de 78
PAMS
Technical Documentation
NSE–1
System Module
Original  03/98
Page 3 – 58
UHF VCO module
Parameter
Conditions
Rating
Unit/
Notes
Supply voltage,  Vcc
2.8 +/– 0.1
V
Supply current,  Icc
Vcc = 2.8 V, 
Vc= 2.25 V
<  10
mA
Control voltage,  Vc
Vcc = 2.8  V
0.8... 3.7
V
Oscillation frequency
Vcc = 2.8  V
Vc = 0.8 V
Vc = 3.7 V
< 1006
> 1031
MHz
MHz
Tuning voltage in center frequency
f = 1018.5 MHz
2.25 +/– 0.25
V
Tuning voltage sensitivity in operating
frequency range on each spot freq.
Vcc = 2.8 V
f=1006...1031
MHz
14 +/– 2
MHz/V
Output power level
Vcc=2.7  V
f=1006...1031
MHz
–6.0 min.
dBm
UHF local signal input in CRFU_1a
Parameter
Min.
Typ.
Max.
Unit/Notes
Input frequency range
990
1040
MHz
Input level
200
700
mVpp
Connections
RF connector and antenna switch
Parameter
Min.
Typ.
Max.
Unit/Notes
Operating frequency range
890
960
MHz
Insertion loss, COM to INT
0.2
dB
Insertion loss, COM to EXT
0.4
dB
Nominal impedance
50
ohm
Return loss
15
Signal
name
From
To
Parameter
Mini-
mum
Typi-
cal
Maxi-
mum
Unit
Function
VBATT
Battery
RF
Voltage
3.0
3.6
5.0/6.0 V
Supply voltage for
RF
VXOE-
NA
MAD
CCONT
Logic high ”1”
2.0
2.85
V
VR1, VR6 in
CCONT ON
Logic low  ”0”
0
0.8
V
VR1, VR6 in
CCONT OFF