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参数资料
| 型号： | EVAL-433-KF |
| 厂商： | Linx Technologies Inc |
| 文件页数： | 2/5页 |
| 文件大小： | 0K |
| 描述： | KIT EVAL KEYFOB 433 MHZ 5 BUTTON |
| 标准包装： | 1 |
| 类型： | 发射器 |
| 频率： | 433MHz |
| 适用于相关产品： | Linx OEM 模块 |
| 已供物品： | 板，2 个发射器，2 个接收器，天线，电池，2 个连接器，文档 |
| 其它名称： | EVAL-433-KEY5 EVAL-433-KEY5-ND |
ELECTRICAL SPECIFICATIONS
SETTING THE TRANSMITTER ADDRESS
Parameter
POWER SUPPLY
Operating Voltage
Supply Current
Power-Down Current
TRANSMITTER SECTION
Transmit Frequency Range:
CMD-KEY#-315
CMD-KEY#-418
CMD-KEY#-433
Designation
V CC
I CC
I PDN
F C
Min.
2.1
–
–
–
–
–
Typical
3.0
3.4
5.0
315
418
433.92
Max.
3.6
–
–
–
–
–
Units
VDC
mA
nA
MHz
MHz
MHz
Notes
–
–
1
–
–
–
The Keyfob allows the selection of one
of 1,024 unique addresses. All keyfobs
are supplied set to the same address.
To avoid contention with other units or
to create unique relationships, the
address can be changed. This is
accomplished by cutting the traces with
a sharp object, such as an X-Acto knife.
The traces are accessed by removing
the rear cover.
Center Frequency Accuracy
–
-50
–
+50
kHz
–
If the trace is intact, the address line is
Figure 2: DIP Switch Assignments
ENVIRONMENTAL
connected to ground, otherwise it is
Operating Temperature Range
–
-40
–
+85
°C
1
floating. The receiver’s address must match exactly in order for the units to
Notes
1. Characterized, but not tested
THEORY OF OPERATION
The CMD-KEY#-*** Keyfob transmitter combines the LR Series transmitter with
an on-board Holtek HT640 encoder IC to form a simple, yet effective, RF remote
control transmitter. The LR transmitter is a low-cost, high-performance,
synthesized ASK / OOK transmitter. The transmitter’s synthesized architecture
delivers outstanding stability and frequency accuracy while minimizing the effects
of antenna port loading and mismatching. This reduces or eliminates frequency
pulling, bit contraction, and other negative effects common to SAW-based
transmitter architectures, providing a significantly higher level of performance
communicate. Application Note AN-00300 describes in detail how to set the
address to match any of the receivers offered by Linx. This note can be found in
the Support section of the Linx website, www.linxtechnologies.com.
BUTTON ASSIGNMENTS
The Keyfob is available in five unique button configurations. Those
configurations and the corresponding switch numbers are shown in the figure
below. The table shows which encoder data line has been assigned to each
switch. When a button is pressed, the data line will go high, causing the
corresponding data line on the decoder to go high if the addresses match.
and reliability.
When a button is pressed on the transmitter, power is applied to the internal
circuitry and the encoder IC is enabled. The encoder detects the logic states of
the address lines and button data lines. These states are formatted into a three-
S5
S4
S2
S4
S5
S2
word transmission cycle that continues until the button is released. The encoder
data is used to modulate the transmitter, which, through the antenna, conveys
the data into free space. On the receiver side, a decoder IC or custom
microcontroller is used to check the transmitter’s address bits against the
address settings of the receiving device. If a match is confirmed, the decoder’s
outputs are set to replicate the transmitter’s button states. These outputs can
then be used to activate external circuitry required by the application.
Button
Data Line
The transmitter is compatible with several Linx receiver products, including the
LR, KH2, LT, and OEM product families. For applications where range is critical,
the LR Series receiver is the best choice due to its outstanding sensitivity. When
the transmitter is combined with an LR Series receiver and the HT658 decoder
chip, ranges of up to 750 feet are possible. Applications operating over shorter
S1
S4
S2
S3
S4
S1 S5 S3
S2
S1
S2
S3
D0
D1
D2
distances will also benefit from the increased link reliability and superior noise
immunity provided by the LR Series receiver.
Page 2
Figure 3: CMD-KEY#-*** Button Assignments
S4
S5
D3
D4
Page 3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| EVAL-433-KH | 功能描述:KIT BASIC EVAL 433MHZ KH SERIES RoHS:否 类别:RF/IF 和 RFID >> RF 评估和开发套件，板 系列:KH 标准包装:1 系列:- 类型:GPS 接收器 频率:1575MHz 适用于相关产品:- 已供物品:模块 其它名称:SER3796 |
| EVAL-433-KH2 | 功能描述:射频开发工具 KH2 Basic Eval System 433MHz RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
| EVAL-433-LC | 功能描述:射频开发工具 LC Basic Eval System 433MHz RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
| EVAL-433-LC-S | 功能描述:KIT BASIC EVAL 433MHZ LC SERIES RoHS:否 类别:RF/IF 和 RFID >> 过时/停产零件编号 系列:LC 标准包装:1 系列:- 类型:用于 200/300 系列的欧盟开发套件 适用于相关产品:Zensys RF 模块 所含物品:开发板，模块，编程器，软件，线缆，电源 其它名称:703-1019Q3225667 |
| EVAL-433-LR | 功能描述:射频开发工具 LR Basic Eval System 433MHz RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
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