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LINX TECHNOLOGIES, INC.

159 ORT LANE
MERLIN, OR 975

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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.  For this reason,
we reserve the right to make changes to our products without notice. The information contained in this Data
Guide is believed to be accurate as of the time of publication. Specifications are based on representative lot
samples. Values may vary from lot-to-lot and are not guaranteed. "Typical" parameters can and do vary over
lots and application. Linx Technologies makes no guarantee, warranty, or representation regarding the
suitability of any product for use in any specific application. It is the customer's responsibility to verify the
suitability of the part for the intended application. NO LINX PRODUCT IS INTENDED FOR USE IN ANY
APPLICATION WHERE THE SAFETY OF LIFE OR PROPERTY IS AT RISK.

Linx Technologies DISCLAIMS ALL WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. IN NO EVENT SHALL LINX TECHNOLOGIES BE LIABLE FOR ANY OF
CUSTOMER'S INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING IN ANY WAY FROM ANY DEFECTIVE
OR NON-CONFORMING PRODUCTS OR FOR ANY OTHER BREACH OF CONTRACT BY LINX
TECHNOLOGIES. The limitations on Linx Technologies' liability are applicable to any and all claims or
theories of recovery asserted by Customer, including, without limitation, breach of contract, breach of
warranty, strict liability, or negligence. Customer assumes all liability (including, without limitation, liability
for injury to person or property, economic loss, or business interruption) for all claims, including claims
from third parties, arising from the use of the Products. The Customer will indemnify, defend, protect, and
hold harmless Linx Technologies and its officers, employees, subsidiaries, affiliates, distributors, and
representatives from and against all claims, damages, actions, suits, proceedings, demands, assessments,
adjustments, costs, and expenses incurred by Linx Technologies as a result of or arising from any Products
sold by Linx Technologies to Customer. Under no conditions will Linx Technologies be responsible for
losses arising from the use or failure of the device in any application, other than the repair, replacement, or
refund limited to the original product purchase price. Devices described in this publication may contain
proprietary, patented, or copyrighted techniques, components, or materials. Under no circumstances shall
any user be conveyed any license or right to the use or ownership of such items.

Disclaimer

© 2010 by Linx Technologies, Inc. The stylized Linx logo,
Linx, “Wireless Made Simple”, CipherLinx, and the stylized
CL logo are the trademarks of Linx Technologies, Inc. 
Printed in U.S.A.

Содержание TRM-315-LT

Страница 1: ...fies integration and lowers assembly costs LT SERIES TRANSCEIVER MODULE DATA GUIDE WIRELESS MADE SIMPLE Revised 3 23 10 Figure 1 Package Dimensions 0 125 0 630 0 619 LOT 10000 TRM 433 LT RF MODULE n 2 Way Remote Control n Keyless Entry n Garage Gate Openers n Lighting Control n Medical Monitoring Call Systems n Remote Industrial Monitoring n Periodic Data Transfer n Home Industrial Automation n Fi...

Страница 2: ...112 118 dBm 7 RSSI Analog Dynamic Range 80 dB 9 Analog Bandwidth 20 5 000 Hz 9 Gain 15 mV dB 9 Voltage with No Carrier 430 mV 9 TRANSMITTER SECTION Output Power PO 9 2 11 dBm 1 6 With a 750Ω resistor on LADJ PO 4 0 0 4 dBm 2 6 Output Power Control Range 30 MAX dB 9 Harmonic Emissions PH 36 dBc 6 ANTENNA PORT RF Input Impedance RIN 50 Ω 9 TIMING Receiver Turn On Time Via VCC 2 2 mSec 8 9 Via PDN 0 ...

Страница 3: ... Turn On Time from VCC Figure 10 RX Turn On Time from PDN Figure 6 Current Consumption vs Supply TYPICAL PERFORMANCE GRAPHS 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 115 110 105 100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 RF IN dBm VRSSI V Figure 5 RSSI Curve 1 1 00V div 2 2 00V div 500µS div 1 2 PDN DATA 1 1 00V div 2 2 00V div 2 00mS div 1 2 DATA VCC 1 1 00V div 2 2 00V div 200µS div 1 2 Carrier T R SEL...

Страница 4: ...gnal Strength Indicator This line will supply an analog voltage proportional to the received signal strength 5 A REF Analog RMS Average Voltage Reference 6 ANALOG Recovered Analog Output 7 DATA Digital Data Line This line will output the received data when in Receive Mode and is the data input when in Transmit Mode 8 T R SEL Transmit Receive Select Pull this line low to place the transceiver into ...

Страница 5: ... be used to save system power by waking up external circuitry when a transmission is received or crosses a certain threshold The RSSI output feature adds tremendous versatility for the creative designer 10Ω 10μF Vcc IN Vcc TO MODULE Figure 19 Supply Filter THEORY OF OPERATION The LT Series transceiver sends and recovers data by AM or Carrier Present Carrier Absent CPCA modulation also referred to ...

Страница 6: ...e averaged over a 100mS time frame Because OOK modulation activates the carrier for a 1 and deactivates the carrier for a 0 a data stream that sends more 0 s will have a lower average output power over 100mS This allows the instantaneous output power to be increased thus extending range USING THE DATA LINE The CMOS compatible DATA line is used for both the transmitter data and the recovered receiv...

Страница 7: ...nal content in any manner The received signal will be affected by such factors as noise edge jitter and interference but it is not purposefully manipulated or altered by the modules This gives the designer tremendous flexibility for protocol design and interface Despite this transparency and ease of use it must be recognized that there are distinct differences between a wired and a wireless enviro...

Страница 8: ...aced close to the module s VCC line In some instances a designer may wish to encapsulate or pot the product Many Linx customers have done this successfully however there are a wide variety of potting compounds with varying dielectric properties Since such compounds can considerably impact RF performance it is the responsibility of the designer to carefully evaluate and qualify the impact and suita...

Страница 9: ...echniques however due to their hybrid nature certain aspects of the assembly process are far more critical than for other component types Following are brief discussions of the three primary areas where caution must be observed Reflow Temperature Profile The single most critical stage in the automated assembly process is the reflow stage The reflow profile below should not be exceeded since excess...

Страница 10: ...ergonomic reasons thus an alternative antenna style such as a helical loop or patch may be utilized and the corresponding sacrifice in performance accepted 3 If an internal antenna is to be used keep it away from other metal components particularly large items like transformers batteries PCB tracks and ground planes In many cases the space around the antenna is as important as the antenna itself O...

Страница 11: ...ause consistency issues during production In addition printed styles are difficult to engineer requiring the use of expensive equipment including a network analyzer An improperly designed loop will have a high SWR at the desired frequency which can cause instability in the RF stage Linx offers low cost planar and chip antennas that mount directly to a product s PCB These tiny antennas do not requi...

Страница 12: ... profitability added to a product by RF makes the effort more than worthwhile NOTE Linx RF modules are designed as component devices that require external components to function The modules are intended to allow for full Part 15 compliance however they are not approved by the FCC or any other agency worldwide The purchaser understands that approvals may be required prior to the sale or operation o...

Страница 13: ...he limitations on Linx Technologies liability are applicable to any and all claims or theories of recovery asserted by Customer including without limitation breach of contract breach of warranty strict liability or negligence Customer assumes all liability including without limitation liability for injury to person or property economic loss or business interruption for all claims including claims ...

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