NSW-5
System Module UT5U
PAMS Technical Documentation
Page 44
Issue 1 10/00
Nokia Mobile Phones Ltd.
Function
Unit
Max
Typ
Min
Parameter
To
From/
Control
Signal
name
VR7_bias
CCONT
/
VMODE
RF
800MhZ
PA bias
control for
analog
mode
Logic high ”1”
tbd
V
800MHz PA bias volt-
age is increased to
improve analog mode
efficiency
V5V
CCONT
/
EROTUS
Voltage
4.8
5.0
5.2
V
Erotus and discrete
synthesizer phase det
RFCEN
Current
3.0
5.0
mA
RFTEMP
RF
CCONT
Voltage
0
1.5
V
RF temperature sen-
sor (47 k NTC to
GND)
AFC
Cob-
ba_D
VCTCXO
Voltage Min
0.05
1.2
2.25
V
Automatic frequency
control signal for
VCTCXO. When
DAC is switched
OFF AFC output is in
high–Z mode
Resolution
11
bits
Load resistance
(dynamic)
10
k
Ω
Load resistance
(DC)
110
k
Ω
AGC1
Cob-
ba_D
EROTUS
Voltage Min
0.7
1.40
V
Digital mode receiver
gain control.
DSP
Load resistance
10
k
Ω
Load capacitance
10
pF
Resolution
10
bits
Timing inaccuracy
8
us
AGC2
MAD
(CTID
AGC2,
genpio)
RX LNA
Logic high ”1”
2.0
V
LNA gain switch.
Polarity: 0=reduced
1=normal
DSP
Logic low ”0”
0.5
V
Sink/source curr.
10
100
uA
Load capacitance
10
pF
Timing inaccuracy
8
us
IF2AP/
IF2AN
ERO-
TUS
Cobba_D
IF2 frequency
450
kHz
Differential IF2–sig-
nal from limiter to
DEMO detector in
Cobba_D
Output level,
0.2
V
pp
Load resistance
10
k
Ω
Load capacitance
5
pF