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參數資料
| 型號： | MICRF102YM TR |
| 廠商： | Micrel Inc |
| 文件頁數： | 8/12頁 |
| 文件大小： | 335K |
| 描述： | IC TRANSMITTER ASK UHF 8-SOIC |
| 標準包裝： | 2,500 |
| 頻率： | 300MHz ~ 470MHz |
| 應用： | RKE |
| 調制或協議： | ASK，OOK |
| 數據傳輸率 - 最大： | 20 kbps |
| 功率 - 輸出： | -4dBm |
| 電流 - 傳輸： | 4.7mA |
| 數據接口： | PCB，表面貼裝 |
| 天線連接器： | PCB，表面貼裝 |
| 電源電壓： | 4.75 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | MICRF102YMTR MICRF102YMTR-ND |
MICRF102
Micrel
MICRF102
8
December 2006
resonant at 5pF, the nominal mid-range value of the MICRF102
output stage varactor.
Using the equation:
L
f C
=
1
4
2 2
??/DIV>
If the inductance of the antenna cannot be set at the nominal
value determined by the above equation, a capacitor can
be added in parallel or series with the antenna. In this case,
the varactor internal to the MICRF102 acts to trim the total
capacitance value.
L
ANTENNA
C
VARACTOR
C
P
C
S
Figure 5.
Supply Bypassing
Correct supply bypassing is essential. A 4.7礔 capacitor in
parallel with a 100pF capacitor is recommended.
The MICRF102 is susceptible to supply-line ripple, if supply
regulation is poor or bypassing is inadequate, spurs will be
evident in the transmit spectrum.
PC
VDD
VSS
REFOSC
ASK
MICRF102
L
ASK DATA INPUT
Transformer Output to 50?/DIV>
Impedance Transformation
Network
OFF
ON
RP2
(6.8k)
RP1
(100k)
+5V
Crystal
Z1
Z3
Z2
ANTP
ANTM
STBY
To 50?/DIV>
Termination of
Spectrum Analyzer
Figure 6. Application Test Circuit For Speci cation Veri cation
Transmit Power
The transmit power speci ed in this datasheet is normalized
to a load of 50Ohm. The antenna ef ciency will determine
the actual radiated power. Good antenna design will yield
transmit power in the range of 67dB礦/m to 80dB礦/m at
3 meters.
The PC pin on the MICRF102 is used to set the transmit
power. The differential voltage on the output of the PA (power
ampli er) is proportional to the voltage at the PC pin.
With more than 0.35V on the PC pin the output ampli er
becomes current limited. At this point, further increase in
the PC pin voltage will not increase the RF output power in
the antenna pins. Low power consumption is achieved by
decreasing the voltage in the PC pin, also reducing the RF
output power and maximum range.
Output Blanking
When the device is rst powered up, or after a momentary
loss of power, the output is automatically blanked (disabled).
This feature ensures RF transmission only occurs under con-
trolled conditions when the synthesizer is fully operational,
plus preventing unintentional transmission at an undesired
frequency. Output blanking is key to guaranteeing compliance
with UHF regulations by ensuring transmission only occurs
in the intended frequency band.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MICRF103 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:QwikRadio UHF ASK Transmitter |
| MICRF103BM | 功能描述:IC ASK TRANSMITTER UHF 8SOIC RoHS:否 類別:RF/IF 和 RFID >> RF 發射器 系列:- 標準包裝:4,000 系列:- 頻率:310MHz ~ 440MHz 應用:- 調制或協議:UHF，ASK 數據傳輸率 - 最大:20 kBaud 功率 - 輸出:1dBm ~ 5dBm 電流 - 傳輸:10mA 數據接口:PCB，表面貼裝 天線連接器:PCB，表面貼裝 存儲容量:- 特點:- 電源電壓:2.2 V ~ 4 V 工作溫度:-40°C ~ 85°C 封裝/外殼:16-LSSOP（0.154"，3.90mm 寬） 包裝:帶卷 (TR) |
| MICRF103BM TR | 功能描述:IC TRANSMITTER ASK UHF 8-SOIC RoHS:否 類別:RF/IF 和 RFID >> RF 發射器 系列:- 標準包裝:4,000 系列:- 頻率:310MHz ~ 440MHz 應用:- 調制或協議:UHF，ASK 數據傳輸率 - 最大:20 kBaud 功率 - 輸出:1dBm ~ 5dBm 電流 - 傳輸:10mA 數據接口:PCB，表面貼裝 天線連接器:PCB，表面貼裝 存儲容量:- 特點:- 電源電壓:2.2 V ~ 4 V 工作溫度:-40°C ~ 85°C 封裝/外殼:16-LSSOP（0.154"，3.90mm 寬） 包裝:帶卷 (TR) |
| MICRF103YM | 功能描述:IC ASK TRANSMITTER UHF 8SOIC RoHS:是 類別:RF/IF 和 RFID >> RF 發射器 系列:- 標準包裝:4,000 系列:- 頻率:310MHz ~ 440MHz 應用:- 調制或協議:UHF，ASK 數據傳輸率 - 最大:20 kBaud 功率 - 輸出:1dBm ~ 5dBm 電流 - 傳輸:10mA 數據接口:PCB，表面貼裝 天線連接器:PCB，表面貼裝 存儲容量:- 特點:- 電源電壓:2.2 V ~ 4 V 工作溫度:-40°C ~ 85°C 封裝/外殼:16-LSSOP（0.154"，3.90mm 寬） 包裝:帶卷 (TR) |
| MICRF103YM TR | 功能描述:IC TRANSMITTER ASK UHF 8-SOIC RoHS:是 類別:RF/IF 和 RFID >> RF 發射器 系列:- 標準包裝:4,000 系列:- 頻率:310MHz ~ 440MHz 應用:- 調制或協議:UHF，ASK 數據傳輸率 - 最大:20 kBaud 功率 - 輸出:1dBm ~ 5dBm 電流 - 傳輸:10mA 數據接口:PCB，表面貼裝 天線連接器:PCB，表面貼裝 存儲容量:- 特點:- 電源電壓:2.2 V ~ 4 V 工作溫度:-40°C ~ 85°C 封裝/外殼:16-LSSOP（0.154"，3.90mm 寬） 包裝:帶卷 (TR) |
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