AN1833 Freescale Semiconductor / Motorola, AN1833 Datasheet - Page 13

• Manufacturer Part Number: AN1833
• Description: A Low-Power Wireless Remote Control Transmitter and Receiver
• Manufacturer: Freescale Semiconductor / Motorola

AN1833
MOTOROLA
Freescale Semiconductor, Inc.
* L is 5T #28AWG enameled wire wound on a #74 drill bit. The VCO is fine tuned
NC
30
For More Information On This Product,
by adjusting the spacing between windings of this air core inductor.
Figure 4. VCO Frequency versus VCO Control Voltage
397.5
397.0
396.5
396.0
395.5
395.0
394.5
394.0
393.5
29
Figure 3. Receiver 394.7-MHz Local Oscillator
18 pF
33
0
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R2
28
C1
3.3 k
See
0.5
27
NC
R1
Figure 3
*L
MC13158FTB
C2
V
26
EE1
18 pF
1
VCO CONTROL VOLTAGE (Vdc)
ENABLE
25
11 pF
1 nF
External Varactor Controlled Local Oscillator
CB
1.5
ENABLE
CV
MMBV809L
CS
2
4.7 pF
56 k
V
CC
2.5
+
1 F
Application Note
4.7 pF
V
Control
3
13