MC13156 Datasheet, PDF (16/20 Pages) Motorola, Inc – Wideband FM IF System

MC13156
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
–120
Figure 24. RSSI Output Voltage
versus Input Signal Level
fRF = 45.00 MHz
VCC = 2.0 Vdc
12 dB SINAD @ –109 dBm
(0.8 µVrms)
(See Figure 23)
–100 –80 –60 –40 –20
SIGNAL INPUT LEVEL (dBm)
0 20
Figure 25. S + N/N versus RF Input Signal Level
10
S+N
0
–10
VCC = 5.0 Vdc
fdev = ±75 kHz
–20
fmod = 1.0 kHz
fin = 144.45 MHz
(See Figure 17)
–30
–40
N
–50
–110 –100 –90 –80 –70 –60 –50 –40 –30 –20
RF INPUT SIGNAL (dBm)
Figure 26. RSSI Output Voltage
versus Input Signal Level
1.4
1.2
1.0
0.8
VCC = 5.0 Vdc
0.6
fc = 144.455 MHz
fLO = 133.755 MHz
Low Loss 10.7 MHz
0.4
Ceramic Filter
(See Figure 17)
0.2
–120 –100 –80
–60
–40
–20
0
SIGNAL INPUT LEVEL (dBm)
Figure 27. RSSI Output Rise and Fall Times
versus RF Input Signal Level
35
30
25
20
15
10
5.0
0
0^{ÉÉÉÉÉÉÉÉÇÇ}
ÇÇÇ_–20^{ÉÉÉÉÉÉÉÉÉÇÇÇ}
ÇÇÇ_–40^{ÉÉÉÉÉÉÉÉÇÇÇ}
tr @ 22 k
tf @ 22 k
tr @ 47 k
tf @ 47 k
tr @ 100 k
tf @ 100 k
ÇÇÇ_–60^{ÉÉÉÉÇÇÇ} _{ÇÇ–80}ÉÉÉÇÇ
RF INPUT SIGNAL LEVEL (dBm)
Figure 28. Signal Levels versus
RF Input Signal Level
0
LO Level = –2.0 dBm
–10 (See Figure 17)
IF Output
Limiter Input
–20
–30
–40
–50
–60
–70
–100 –90 –80 –70 –60 –50 –40 –30
RF INPUT SIGNAL LEVEL (dBm)
Figure 29. 1.0 dB Compression Pt. and Input
Third Order Intercept Pt. versus Input Power
10
0
VCC = 5.0 Vdc
fRF1 = 144.4 MHz
–10
fRF2 = 144.5 MHz
fLO = 133.75 MHz
–20
PLO = –2.0 dBm
(See Figure 17)
1.0 dB Comp. Pt.
= –37 dBm
IP3 = –25 dBm
–30
–40
–50
–60
–70
–100
–80
–60
–40
–20
0
RF INPUT POWER (dBm)
16
MOTOROLA WIRELESS SEMICONDUCTOR
SOLUTIONS – RF AND IF DEVICE DATA