CCS Technical Documentation
System Module and User Interface
NSB-9
Issue 1 04/03
Nokia Corporation
Page 17
Table 9: AC and DC Characteristics of RF-Baseband Analogue Signals
Signal name From
To
Parameter
Min
Typ
Max Unit
Function
VCTCXO
VCTCX
O
UPP
Frequency
13
26
MHz
High stability
clock signal for
the logic circuits,
AC coupled.
Distorted
sinewave eg.
sawtooth.
Signal
amplitude
0.2
0.8
2.0
Vpp
Input
Impedance
10
kohm
Input
Capacitance
10
pF
Duty Cycle
40
60
%
VCTCXOGnd
VCTXO
UPP
DC Level
0
V
Ground for refer-
ence clock
RXI/RXQ
HAGAR
UEM
Differential volt-
age swing
(static)
1.35
1.4
1.45
Vpp
RX baseband sig-
nal.
DC level
1.3
1.35
1.4
V
TXIP / TXIN
UEM
HAGAR
Differential volt-
age swing
(static)
2.23
2.48
Vpp
Programmable
voltage swing.
Programmable
common mode
voltage.
Between TXIP-TXIN
DC level
1.17
1.20
1.23
V
Source Imped-
ance
200
ohm
TXQP / TXQN
UEM
HAGAR
Same spec as for TXIP / TXIN
Differential quad-
rature phase TX
baseband signal for
the RF modulator
AFC
UEM
VCTCXO
Voltage Min
Max
0.0
2.4
0.1
2.6
V
Automatic fre-
quency control sig-
nal for
VCTCXO
Resolution
11
bits
Load resistance
and capacitance
1
100
kohm
nF
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