Nokia NPL-4 Series Manual page 22

NPL-4/5/RM-104
System Module and User Interface
Table 7: AC and DC Characteristics of DCT4 RF-Baseband Analogue Signals
Signal From
name
VCTCXO VCTCXO
VCTCXOGnd VCTCXO
RXI/RXQ HELGO85
TXIP / TXIN UEMEK
TXQP / UEMEK
TXQN
AFC UEMEK
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Page 22
To Parameter Min
UPP Frequency
Signal
amplitude
Input
Impedance
Input
Capacitanc
e
Harmonic
Content
Clear signal
window (no
glitch)
Duty Cycle
UPP DC Level
UEMEK Voltage
swing
(static)
DC level
I/Q
amplitude
mismatch
I/Q phase
mismatch
HELGO88 Differential
voltage
swing
(static)
DC level
Source
Impedance
HELGO85 Same spec as for TXIP / TXIN
VCTCXO Voltage
Min
Max
Resolution
Load
resistance
and
capacitance
Source
Impedance
Nokia Customer Care
Typ Max
13 26 MHz
0.2 0.8 2 Vpp
10
10 pF
-8 dBc
300
40 60 %
0
1.35 1.4 1.45 Vpp
1.3 1.35 1.4 V
0.2 DB
-5 5 Deg
2.15 2.2 2.25 Vpp
1.17 1.2 1.23 V
200 Ω
0 0.1
2.4 2.6
11
1
100 nF
200 Ω
Unit Function
High
stability
clock signal
for the
KΩ
logic
circuits, AC
coupled.
Distorted
sinewave
e.g.
sawtooth.
mVpp
V Ground for
reference
clock
Received
demodulate
d IQ signals
Programma
ble voltage
swing.
Programma
ble
common
mode
voltage.
Between
TXIP-TXIN
V Automatic
frequency
control
signal for
VCTCXO
Bits
kΩ
Issue 2 05/05