MC13135 MC13136
Figure 17a. Single Channel Narrowband FM Receiver at 49.7 MHz
MC13135
VCC
+
1.0
1.0 k
Buffered LO
Output
1.0
µH
2200 p
1st LO
1
2
22
3
0.01
0.1
120 p
10.245 MHz
Xtal
Ceramic
Filter
455 kHz
50 p
5.1 k
VCC1
4
5
2nd LO
6
7
8
9
Demod
10
0.1
0.1
11
Limiter
16
15
12
0.1
14
13
39 k
455 kHz
Quad Coil
AF
18
VCC2
19
0.1
360
20
Ceramic
Filter
10.7 MHz
21
0.01
Varicap
24
23
0.001
0.2
µH
62 pF RF Input
150 p 50
Ω
Source
Figure 17.
27 p
39 MHz
Xtal 5.0 p
17
1.0 k
0.15
10 k
Recovered
Audio
RSSI
Output
Figure 17b. PC Board Component View
3
39 MHz
XT
1.0 k
2200p
27p
5p
0.1
50p
120p
10.245 MHz
XT
2
1
0.01
10.7 MHz
CF
MC13135
0.1
150p
62p
1.0
+
360
1.0k
10k
0.15
4
5
0.01
0.1
NOTES:
1. 0.2
µH
tunable (unshielded) inductor
2. 39 MHz Series mode resonant
3rd Overtone Crystal
3. 1.5
µH
tunable (shielded) inductor
4. 10.245 MHz Fundamental mode crystal,
32 pF load
5. 455 kHz ceramic filter, muRata CFU 455B
or equivalent
6. Quadrature coil, Toko 7MC–8128Z (7mm)
or Toko RMC–2A6597HM (10mm)
7. 10.7 MHz ceramic filter, muRata SFE10.7MJ–A
or equivalent
5.1k
CF
455 KHz
0.1
7
.001
0.22
0.1
39K
51K
10k
10
+
+4.7
MC34119
Figure 17c. Optional Data Slicer Circuit
(Using Internal Op Amp)
VCC
20 k
Vin
(Pin 17)
20 k
15
14
0.001 10 k
1.0 M
16
10 k
+10
0.1
6
FSK Data
Output
8
MOTOROLA ANALOG IC DEVICE DATA
MOTOROLA [ MOTOROLA, INC ]
