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參數(shù)資料
| 型號(hào)： | MC33493 |
| 廠商： | Motorola, Inc. |
| 英文描述： | PLL tuned UHF Transmitter for Data Transfer Applications |
| 中文描述： | 鎖相環(huán)調(diào)諧數(shù)據(jù)傳輸應(yīng)用超高頻發(fā)射器 |
| 文件頁數(shù)： | 14/20頁 |
| 文件大?。?/td> | 595K |
| 代理商： | MC33493 |
14
MC33493 Technical Data
MOTOROLA
COMPLETE APPLICATION SCHEMATIC AND PCB FOR OOK MODULATION
Figure 11: Output power at 434MHz band vs R
ext
value
The 50
matching network used for the 868MHz band is similar to the 434MHz, except components values: in
figure 10b, L1 is changed to 8.2nH and C3 to 470pF. The typical gain of this 868MHz matching network is 4dB
compared to unmatched configuration.
COMPLETE APPLICATION SCHEMATIC AND PCB FOR OOK MODULATION
Figure 12 gives a complete application schematic using a Motorola MC68HC908RK2 microcontroller. OOK
modulation is selected, f
carrier
= 433.92MHz. C
2
to C
5
capacitors can be removed if switches debounce is done by
software.
Figure 12: Application schematic for OOK modulation, 434MHz frequency band
Vbat
SW1
SW2
SW2a
SW1a
Note that for 868MHz band application, the input pin BAND must be wired to ground. See component description
Output power measurement in typical conditions (434MHz - Vcc=3V - 25°C)
Output power when matched (dBm)
-0.35dB/k
# -0.35mA/k
Output power on 50
load (dBm)
-6
-4
-2
0
2
4
6
8
6
9
12
15
18
21
24
Rext (k
)
RFOUT
Level (dBm)
REXT SPECIFIED RANGE
Vbat
Vbat
Vbat
C6 8.2pF
C3
2.2nF
C2
2.2nF
C5
2.2nF
C4
2.2nF
C7
22nF
R1
750
Y1
13.56MHz
LED1
C9
2.2pF
C8
100pF
R2
12K
B1
1
2
U2
MC68HC908RK2
PTA0
1
PTB0/MCLK
2
PTB1
3
PTB2/TCH0
4
PTB4/TCH1
5
PTB5
6
PTB3/TCLK
7
OSC1
8
OSC2
9
VSS
10
VDD
11
IRQ1
12
RST
13
PTA7
14
PTA6/KBD6
15
PTA5/KBD5
16
PTA4/KBD4
17
PTA3/KBD3
18
PTA2/KBD2
19
PTA1/KBD1
20
C10
100nF
U1
MC33493
DATACLK
1
DATA
2
BAND
3
GND
4
XTAL1
5
XTAL0
6
REXT
7
CFSK
8
VCC
9
RFOUT
10
GNDRF
11
VCC
12
ENABLE
13
MODE
14
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC33493ADTBE | 功能描述:射頻發(fā)射器 UHF TRANSMITTER RoHS:否 制造商:Micrel 類型:ASK Transmitter 封裝 / 箱體:SOT-23-6 工作頻率:300 MHz to 450 MHz 封裝:Reel |
| MC33493ADTBER2 | 功能描述:射頻發(fā)射器 UHF TRANSMITTER RoHS:否 制造商:Micrel 類型:ASK Transmitter 封裝 / 箱體:SOT-23-6 工作頻率:300 MHz to 450 MHz 封裝:Reel |
| MC33493DTB | 功能描述:射頻發(fā)射器 315 434 868 MHz RoHS:否 制造商:Micrel 類型:ASK Transmitter 封裝 / 箱體:SOT-23-6 工作頻率:300 MHz to 450 MHz 封裝:Reel |
| MC33493DTBE | 功能描述:射頻發(fā)射器 PLL TUNED UHF TRANSMITTE RoHS:否 制造商:Micrel 類型:ASK Transmitter 封裝 / 箱體:SOT-23-6 工作頻率:300 MHz to 450 MHz 封裝:Reel |
| MC33493DTBER2 | 功能描述:射頻發(fā)射器 PLL TUNED UHF TRANSMITTE RoHS:否 制造商:Micrel 類型:ASK Transmitter 封裝 / 箱體:SOT-23-6 工作頻率:300 MHz to 450 MHz 封裝:Reel |
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