Analogue Signals - Nokia RM-392 Service Manual

RM-392; RM-393
System Module

Analogue Signals

Signal From
name
RFCLK VCTCXO
RFCLKGnd VCTCXO
RXIP, RF-IC
RXIN,
RXQP,
RXQN
TXIP, Liteplus
TXIN,
TXQP,
TXQN
Issue 1
Table 9 AC and DC Characteristics of RF-Base band Analogue Signals
To Parameter
UPP Frequency
Signal
amplitude
Input
Impedance
Input
Capacitanc
e
Harmonic
Content
Clear signal
window
(no glitch)
Duty Cycle
UPP DC Level
Litepl Voltage
us swing
(static)
DC level
I/Q
amplitude
mismatch
I/Q phase
mismatch
RF-IC Differential
voltage
swing
(static)
DC level
Source
Impedance
COMPANY CONFIDENTIAL
Copyright © 2008 Nokia. All rights reserved.
Min Typ Max
13/26
0.2 0.8 1.32
10
10
-8
200
40 60
0
1.4 1.45
1.3 1.35 1.4
0.2
-0.5 0.5
2.25 2.45
1.17 1.20 1.23
200
Unit Function
MHz System Clk from RF to
BB,
Vpp 13/26 MHz Depending
on RF chipset
kW UPP minimum
recommended
amplitude is 0.3Vpp.
pF
dBc
mVpp
%
V System Clock slicer Ref
GND, not separated
from pwb GND layer
Vpp Differential positive /
negative in-phase
and quadrature Rx
Signals.
V
dB
deg
Vpp Differential positive /
negative in-phase
and quadrature Tx
Signals
In High-Z when RX is
receiving.
V
W
Page 6 –13