2001 Oct 04 10
Philips Semiconductors Product specification
HITAG proximity reader module
hardware
HTRM440 family
9 MECHANICAL SPECIFICATIONS
handbook, full pagewidth
MGW272
6.3 10.0
7.5
8.5
22.8
40.0
2.9
2.54
2.54
2.0
49.560.0 43.0
20.0
43.0
60.0
54.0
A-A
A
A
55.0
88.0
108.1
3.0
Fig.6 Proximity reader module.
Dimensions in mm.
2001 Oct 04 11
Philips Semiconductors Product specification
HITAG proximity reader module
hardware
HTRM440 family
10 APPLICATION INFORMATION
10.1 Metallic environment, interferences
The communication range is impaired by metallic
environment and electromagnetic interferences
(e.g. monitors and keyboards). Therefore, you should
keep a distance of at least the antenna’s diameter to
metallic surfaces or loops as well as to electromagnetic
interferences. If this is not possible, you have to take
preventive measures such as using ferrites or shielding for
transponder and antenna.
10.2 Distance between two antennas
In order to be able to operate two systems side by side
without negative influence on communication ranges, you
must place the antennas at a minimum distance of four
times the antenna diameter. If you place them at a closer
distance be sure to use suitable shielding or
synchronisation.
10.3 Possible sources of errors by connecting the
HTRM440
The following error list should be checked if any error
(e.g. read or write distances that do not reach the specified
values) occurs:
Power supply cable not mounted correctly
DC power supply voltage not in the specified range from
9to16V
Serial interface not connected correctly
Interference received by the antenna because of an
external noise source (e.g. monitor, keyboards); the
remedial measure is to remove the antenna from the
interfering area
Connecting cables of the antenna changed by mistake
Antenna is mounted in metal environment; the remedial
measure is to mount a non-metal space keeper between
the antenna and the metal
Antenna is not designed following the design
instructions
Inductance of the antenna is too high
Quality factor of the antenna is too high (Q > 40)
Antenna current is too high
Antenna voltage is too high.
11 SURVEY OF REFERENCED DOCUMENTS
CATEGORY TITLE
Data sheet
“HTCM400, HTRM440 Family, HTRM800 Family Interface Protocol Reader - Host”
Application note
“HT1 (resp. HT2) Transponder family, reliability and integrity of data transmission”
2001 Oct 04 12
Philips Semiconductors Product specification
HITAG proximity reader module
hardware
HTRM440 family
12 DATA SHEET STATUS
Notes
1. Please consult the most recently issued data sheet before initiating or completing a design.
2. The product status of the device(s) described in this data sheet may have changed since this data sheet was
published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com.
DATA SHEET STATUS
(1)
PRODUCT
STATUS
(2)
DEFINITIONS
Objective data Development This data sheet contains data from the objective specification for product
development. Philips Semiconductors reserves the right to change the
specification in any manner without notice.
Preliminary data Qualification This data sheet contains data from the preliminary specification.
Supplementary data will be published at a later date. Philips
Semiconductors reserves the right to change the specification without
notice, in order to improve the design and supply the best possible
product.
Product data Production This data sheet contains data from the product specification. Philips
Semiconductors reserves the right to make changes at any time in order
to improve the design, manufacturing and supply. Changes will be
communicated according to the Customer Product/Process Change
Notification (CPCN) procedure SNW-SQ-650A.
13 DEFINITIONS
Short-form specification The data in a short-form
specification is extracted from a full data sheet with the
same type number and title. For detailed information see
the relevant data sheet or data handbook.
Limiting values definition Limiting values given are in
accordance with the Absolute Maximum Rating System
(IEC 60134). Stress above one or more of the limiting
values may cause permanent damage to the device.
These are stress ratings only and operation of the device
at these or at any other conditions above those given in the
Characteristics sections of the specification is not implied.
Exposure to limiting values for extended periods may
affect device reliability.
Application information Applications that are
described herein for any of these products are for
illustrative purposes only. Philips Semiconductors make
no representation or warranty that such applications will be
suitable for the specified use without further testing or
modification.
14 DISCLAIMERS
Life support applications These products are not
designed for use in life support appliances, devices, or
systems where malfunction of these products can
reasonably be expected to result in personal injury. Philips
Semiconductors customers using or selling these products
for use in such applications do so at their own risk and
agree to fully indemnify Philips Semiconductors for any
damages resulting from such application.
Right to make changes Philips Semiconductors
reserves the right to make changes, without notice, in the
products, including circuits, standard cells, and/or
software, described or contained herein in order to
improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for
the use of any of these products, conveys no licence or title
under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that
these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified.

HTRM440/AIE,122

Mfr. #:
Manufacturer:
NXP Semiconductors
Description:
RFID READER R/W 125KHZ MODULE
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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