mc33493a Freescale Semiconductor, Inc, mc33493a Datasheet - Page 16

• Manufacturer Part Number: mc33493a
• Description: Pll Tuned Uhf Transmitter For Data Transfer
• Manufacturer: Freescale Semiconductor, Inc

Complete Application Schematic and PCB for FSK Modulation
Figure 13
13
Figure 14
f
16
carrier
)
Motional capacitance
= 433.92 MHz. C
Static capacitance
Load capacitance
Loss resistance
Parameter
shows a two-button keyfob board. Size is 30 × 45 millimeters.
shows a complete application schematic using a MC68HC908RK2 microcontroller. FSK modulation is selected,
Complete Application Schematic and PCB for FSK
Modulation
1
capacitor can be removed if switch debounce is done by software.
PLL Tuned UHF Transmitter for Data Transfer Applications, Rev. 2
Table 7. Typical Crystal Characteristics (SMD Package)
NDK LN-G102-950
(for 315 MHz)
Figure 13. Two-Button Keyfob Board Layout
3.33
1.05
12
28
(for 434 MHz and 868 MHz)
NDK NX8045GB/CSJ
S1-40125-8050-12
18.5
4.4
1.5
12
(for 434 MHz and 868 MHz)
NDK NX1255GA
10.5
2.46
12
10
Freescale Semiconductor
Unit
pF
pF
fF
Ω