User Guide

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