User Guide

PAMS
Technical Documentation
NSE–8/9
System Module
Page 2– 30
Issue 1 07/99
Table 18. AC and DC Characteristics of signals between Baseband and RF (continued)
FunctionUnitMaxi-
mum
Typi-
cal
Mini-
mum
ParameterFrom
To
Signal
name
SCLK MAD2PR1
Logic high ”1” 2.0 Vbb V
PLL clock
SUMMA
Logic low ”0” 0 0.5 V
Load impedance 10 kohm
Load capaci-
tance
10 pF
Data rate fre-
quency
3.25 MHz
SENA1 MAD2PR1
Logic high ”1” 2.0 Vbb V
PLL enable
SUMMA
Logic low ”0” 0 0.5 V
Current 50 uA
Load capaci-
tance
10 pF
FRACT
RL
MAD2PR1
Logic high ”1” 2.0 Vbb V Nominal gain in LNA
RL
CRFU
Logic low ”0” 0 0.4 V Reduced gain in LNA
Current 0.1 mA
TXP MAD2PR1
Logic high ”1” 2.0 Vbb V
Transmitter power con-
tl bl
SUMMA
Logic low ”0” 0 0.5 V
trol enable
Load Resistance 50 kohm
Load Capaci-
tance
10 pF
Timing inaccura-
cy
1 us
RFC VC(TC)XO
Frequency 13 MHz
High stability clock sig-
l f th l i i it
MAD2PR1
Signal amplitude 0.5 1.0 2.0 Vpp
nal
f
or the logic circuits
Load resistance 10 kohm
Load capaci-
tance
10 pF
BAND_
SEL
MAD2PR1
CRFU 3
Logic high ”1” 2.0 Vbb V
GSM900 DSPGenOut 4
S
EL
C
RFU 3
Logic low ”0” 0 0.4 V
GS
M1
800
Current 0.1 mA
GSM1800
NOTE: Logic controls in low state when RF in power off.