User Guide

Issue 2 10/2004 COMPANY CONFIDENTIAL 39
Copyright © 2004 Nokia. All Rights Reserved.
NHL-12
7 - RF Description & Troubleshooting Nokia Customer Care
Frequency stability vs. load change
(2kohm//10pF +/-10%)
-0.3 +0.3 ppm
Aging -1.0 +1.0 ppm/
year
Control voltage, Vc 0.3 1.3 2.3 V
Control voltage slope, 0.3V<Vc<2.3V
with internal frequency tuning
no tuning.
+/-9
+/-18
+/-16
+/-30
ppm/V
ppm/V
Control input resistance 1 Mohm
Harmonics -8 dBc
Duty Cycle 40 60 %,
(T+)/
(Ttotal)
Start up time
output level within 90% and output fre-
quency limits +/-0.1ppm from the final
value
5 ms
Frequency dips at any initial frequency
Temp=-20...+75deg. C
Vcc=2.6...2.8V
Vc=0.3...2.3V
-0.5 0.5 ppm
Phase noise @1kHz offset -130 dBc/Hz
Table 3: VCO
Parameter Conditions Min Nom Max Unit
Supply voltage, Vcc 2.55 2.70 2.85 V
Current consumption, Icc 20 mA
Control voltage, Vc 0.7 3.8 V
Oscillation frequency Vc=0.7V
Vc=3.8V
3980
3290 MHz
MHz
Tuning voltage at the
center frequency
f=3635MHz
Vcc=2.7V
Temp=+25C
2.0 2.25 2.5 V
Tuning voltage sensitivity
in operating frequency
range at each spot freq.
225 250 275 MHz/V
Table 2: 26 MHz reference oscillator (VCTCXO)
Parameter Min Typ Max
Unit/
Notes