Digital If Parts - Nokia NSW-5 Series Service Manual

NSW-5
System Module UT5U
Parameter
Conversion gain @
Rl=1.5kohm
Conversion gain variation
3rd order input intercept point
Mixer output frequency range
Mixer out to limiter in isolation
Limiter input frequency
Limiter input limiting range
Limiter output voltage
Limiter output resistive load
Limiter output capacitive load
RSSI dynamic range
RSSI starting level @ LIMIN1
RSSI voltage slope
RSSI voltage range
RSSI output capacitive load
RSSI output resistive load
Freq. multiplier input frequency
Input signal spurious levels
Input signal level

Digital IF parts

The digital IF–parts of EROTUS comprise AGC Amplifer with 57 dB con-
trol range, a mixer and a buffer amplifier for the last IF.
Parameter
Supply voltage
Current consumption
RF input frequency range
Local frequency (6x19.44 MHz)
IF frequency
Max voltage gain, AGC + mixer
Min voltage gain, AGC + mixer
Noise figure @ max gain
Control voltage for min gain
Control voltage for max gain
AGC gain control slope
Page 40
Min
25
20
70
30
10
65
30
5
0.1
500
–10
600
Min
2.7
47
TBD
E Nokia Mobile Phones Ltd.
PAMS Technical Documentation
Typ/ Max
Nom
33 dB
TBD dB, temp -30...+85 C
mV
450 kHz
dB, @ 450 kHz
450 kHz
uV
0.3 V
pp
kΩ
5 pF
70 dB
60 uVrms
10 mV/dB
1.5 V
50 pF
kΩ
19.44 MHz
dBc, (19.44 MHz
spurs)
1000 mV
Typ/ Max
Nom
2.8 2.9 V
25.2 34.5 mA
116.19 MHz
116.64 MHz
450 kHz
dB
–10 dB
8 dB
0.7 V
1.4 1.45 V
90 TBD dB/V
Issue 1 10/00
Unit
rms
rms
pp
Unit