W-Linx TechnologyメーカーTXE-418-KHの使用説明書/サービス説明書
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DESCRIPTION The KH Series is ideally suited for volume use in OEM applications such as remote control and command, and keyless entry. Housed in a compact SMD package, it combines a highly- optimized RF transmitter with an on-board encoder.
Page 3 Page 2 ELECTRICAL SPECIFICATIONS *CAUTION* This product incorporates numerous static-sensitive components. Always wear an ESD wrist strap and observe proper ESD handling procedures when working with this device. Failure to observe this precaution may result in module damage or failure.
Page 5 Page 4 PIN ASSIGNMENTS LADJ/GND D0 D1 A 9 A8 A7 A6 A5 A4 D2 GND VCC TE D3 ANT GND 1 2 3 4 5 6 7 81 7 18 1 9 20 21 22 23 24 D4 D5 D6 A1 A0 D7 A3 A2 9 10 11 12 13 14 15 16 Figure 6: KH Series Transmitter Pinout (Top View) Pin # Name Description 1 GND / LADJ Level Adjust.
Page 7 Page 6 POWER SUPPLY REQUIREMENTS The module does not have an internal voltage regulator; therefore it requires a clean, well-regulated power source. While it is preferable to power the unit from a battery, it can also be operated from a power supply as long as noise is less than 20mV.
Page 9 Page 8 TYPICAL APPLICATIONS Below is an example of a basic remote control transmitter utilizing the KH Series transmitter. When a key is pressed on the transmitter, a corresponding line on the receiver goes high. A schematic for the receiver / decoder circuit may be found in the KH Series Receiver Data Guide.
BOARD LAYOUT GUIDELINES If you are at all familiar with RF devices, you may be concerned about specialized board layout requirements. Fortunately, because of the care taken by Linx in designing the modules, integrating them is very straightforward.
PAD LAYOUT The following pad layout diagram is designed to facilitate both hand and automated assembly. PRODUCTION GUIDELINES The modules are housed in a hybrid SMD package that supports hand or automated assembly techniques.
Page 15 Page 14 ANTENNA CONSIDERATIONS The choice of antennas is a critical and often overlooked design consideration. The range, performance, and legality of an RF link are critically dependent upon the antenna. While adequate antenna performance can often be obtained by trial and error methods, antenna design and matching is a complex task.
Page 17 Page 16 A whip-style antenna provides outstanding overall performance and stability. A low-cost whip is can be easily fabricated from a wire or rod, but most designers opt for the consistent performance and cosmetic appeal of a professionally-made model.
Page 19 Page 18 LEGAL CONSIDERATIONS When working with RF, a clear distinction must be made between what is technically possible and what is legally acceptable in the country where operation is intended.
LINX TECHNOLOGIES, INC. 159 ORT LANE MERLIN, OR 97532 PHONE: (541) 471-6256 FAX: (541) 471-6251 www.linxtechnologies.com U.S. CORPORATE HEADQUARTERS WIRELESS MADE SIMPLE ® Linx Technologies is continually striving to improve the quality and function of its products.
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