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參數(shù)資料
| 型號： | MICRF112YMM TR |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 14/20頁 |
| 文件大小： | 550K |
| 描述： | IC XMITTER UHF ASK/FSK 10-MSOP |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 頻率： | 300MHz ~ 450MHz |
| 應(yīng)用： | RKE |
| 調(diào)制或協(xié)議： | ASK，OOK |
| 數(shù)據(jù)傳輸率 - 最大： | 50 kbps |
| 功率 - 輸出： | 10dBm |
| 電流 - 傳輸： | 12.3mA |
| 數(shù)據(jù)接口： | PCB，表面貼裝 |
| 天線連接器： | PCB，表面貼裝 |
| 電源電壓： | 1.8 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 125°C |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | MICRF112YMMTR MICRF112YMMTR-ND |
Micrel, Inc.
MICRF112
December 2011
14
M9999-120911
(408) 944-0800
Application Information
Figure 6. ASK 433.92MHz and 315MHz
Note: Values in parenthesis are for 315MHz
The MICRF112 is well suited to drive a 50 ohms source,
monopole or a loop antenna. Figure 6 is an example of a
loop antenna configuration. Figure 6 also shows both
315MHz and 433.92MHz ASK configurations for a loop
antenna. Besides using a different crystal, Table 1 lists
modified values needed for the listed frequencies.
Frequency
(MHz)
L1
(nH)
C5
(pF)
L4
(nH)
C7
(p
F)
Y1 (MHz)
315.0
470
10
150
6.8
9.84375
433.92
680
10
82
4.7
13.5600
Table 1
The reference design shown in Figure 6 has an antenna
optimized for using the matching network as described in
Table 1.
Power Control Using External Resistor
R7 is used to adjust the RF output levels which may be
needed to meet compliance. As an example, the
following tables list typical values of conducted RF
output levels and corresponding R7 resistor values for
the 50& test board shown in Figure 2. R7 of the TX112
Demo board using the loop antenna can be adjusted for
the appropriate radiated field allowed by FCC or ETSI
compliance. Contact Micrel for suggested values to meet
FCC and ETSI compliances.
R7, &
Output Power, dBm
IDD, mA
0
10
6.7
75
8.5
6.3
100
8.0
6.2
500
1.6
4.13
1000
-3.8
4.87
Output Power Versus External Resistor at 315MHz
R7, &
Output Power, dBm
IDD, mA
0
8.68
7.5
75
8.34
7.33
100
8.02
7.3
500
4.34
6.3
1000
0.42
5.5
Output Power Versus External Resistor at 433.92 MHz
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參數(shù)描述 |
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| MICRF112YMU TR | 功能描述:射頻發(fā)射器 300MHz to 450MHz ASK/FSK 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 工作電源電壓: 最大工作溫度: 安裝風(fēng)格: |
| MICRF112YMU-TR | 功能描述:RF Transmitter ASK, FSK 300MHz ~ 450MHz 10dBm 50kbps PCB, Surface Mount Antenna 10-XFDFN Exposed Pad 制造商:microchip technology 系列:QwikRadio? 包裝:剪切帶（CT） 零件狀態(tài):停產(chǎn) 頻率:300MHz ~ 450MHz 應(yīng)用:RKE，TPM 調(diào)制或協(xié)議:ASK，F(xiàn)SK 數(shù)據(jù)速率（最大值）:50kbps 功率 - 輸出:10dBm 電流 - 傳輸:11mA 數(shù)據(jù)接口:PCB，表面貼裝 天線連接器:PCB，表面貼裝 存儲容量:- 特性:- 電壓 - 電源:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 125°C 封裝/外殼:10-XFDFN 裸露焊盤 標(biāo)準(zhǔn)包裝:1 |
| MICRF113 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:QwikRadio㈢ ASK Transmitter |
| MICRF113_11 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:300MHz to 450MHz +10dBm ASK Transmitter in SOT23 |
| MICRF113-315 EV | 制造商:Micrel Inc 功能描述:evaluation board for MICRF113 |
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