katalogový list ID-3LA
1
ID-3/12/20 LA Series Datasheet X2
25.1.2015
ID-3LA, ID-12LA, ID-20LA
Low Voltage Series
Reader Modules
Datasheet Version1.2 Date 28/02/15
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2
ID-3/12/20 LA Series Datasheet X2
25.1.2015
Content
1. Overview .......................................................................................................................................3
2. Pin Out for ID12-LA and ID20-LA .....................................................................................................3
ID-12LA, ID-20LA.........................................................................................................................3
ID-3LA ....................................................................................................................................3
3. Device Operational Characteristics .................................................................................................4
4. Data Formats .................................................................................................................................4
5. Magnetic Emulation Waveforms .....................................................................................................5
6. Pin Description & Output Data Formats ..........................................................................................6
7. Absolute Maximum Ratings ............................................................................................................7
8. Circuit Diagram ..............................................................................................................................8
8.1 Circuit Diagram for ID-12LA, ID-20LA.................................................................................................. 8
8.2 Circuit Diagram for ID-3LA .................................................................................................................. 8
9. Dimensions (mm) ...........................................................................................................................9
10. Connection direct to a computer.................................................................................................10
10.1 Connection to a Processor UART .................................................................................................... 11
10.2 Connecting a Read LED ................................................................................................................... 11
11. Useful information .....................................................................................................................11
12. Choice of Power Supply ..............................................................................................................12
13. Designing Coils for ID-3LA ...........................................................................................................13
14. Fine Tuning the ID-3LA................................................................................................................14
15. ID-3LA Compatibility Issues with the ID-2 ....................................................................................15
16. ID-12LA, ID-20LA Compatibility Issues with ID-12, ID-20 ..............................................................15
17. Layout Precautions for ID-12LA and ID-20LA................................................................................15
18. Contact Information ...................................................................................................................16
Disclaimer........................................................................................................................................17
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3
ID-3/12/20 LA Series Datasheet X2
25.1.2015
1. Overview
ID2-LA, ID12-LA and the ID20-LA series are small footprint 2.8-5.0volt reader modules that support
ASCII, Wiegand26 and Magnetic ABA Track2 data formats. The modules are pin and function compatible
with the ID2/12/20 series.
2. Pin Out for ID12-LA and ID20-LA
ID-12LA, ID-20LA
ID-3LA
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1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
GND
RES (Reset Bar)
Do not connect
Do not connect
CP
Tag in Range
Format Selector
D1 (Data Pin 1)
D0 (Data Pin 0)
Read (LED / Beeper)
+2.8V thru +5.0V
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
GND
RES (Reset Bar)
ANT (Antenna)
ANT (Antenna)
CP
Tag in Range
Format Selector
D1 (Data Pin 1)
D0 (Data Pin 0)
Read (LED / Beeper)
+2.8V thru +5.0V
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ID-3/12/20 LA Series Datasheet X2
25.1.2015
3. Device Operational Characteristics
Parameter
ID-3LA, ID-12LA, ID-20LA
Frequency
125 kHz nominal
Card Format
EM 4001 or compatible
Read Range ID3
Up to 30 using suitable antenna using ID-Innovations clamshell card @5v
Read Range ID13
Up to 12cm using ISO card, up to 18cm using ID-Innovations clamshell card @5v
Read Range ID23
Up to 18cm using ISO card, up to 25cm using ID-Innovations clamshell card @5v
Encoding
Manchester 64-bit, modulus 64
Power Requirement
+2.8 VDC thru +5 VDC @ 35mA ID-12LA, 45mA ID-20LA
RF I/O Output Current
+/- 200mA PKPK
Certification
CE, C-TICK, ROHS, FCC
4. Data Formats
Output Data Structure - ASCII - 9600 Baud, No Parity, 1 stop bit.
Output = CMOS (Push Pull) 0-Vdd
STX (02h)
DATA (10 ASCII)
CHECK SUM (2 ASCII)
CR
LF
ETX (03h)
Example for Calculation of Checksum for ASCII
Suppose the output Data is 0C000621A58E
Here the actual data is 0C,00,00,06,21,A5 and the checksum is 6E
Using binary we Exclusive OR the bit columns
0C
=
00001100
00
=
00000000
06
=
00000110
21
=
00100001
A5
=
10100101
CHECKSUM
10001110 (8E)
Output Data Structure - Wiegand26 – 1mS repeat, 50uS pulse. Open Drain
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
P
E
E
E
E
E
E
E
E
E
E
Even parity (E)
E
E
O
O
O
O
O
O
O
O
O
O
O
O
P
Odd parity (O)
P = Parity start bit and stop bit
Output Data Magnetic ABA Track2 – At Approx. 80cm/sec. Open Drain
10 Leading Zeros
SS
Data
ES
LCR
10 Ending Zeros
[SS is the Start Character of 11010, ES is the end character of 11111, and LRC is the Longitudinal Redundancy Check.]
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5
ID-3/12/20 LA Series Datasheet X2
25.1.2015
5. Magnetic Emulation Waveforms
Blue = Clock, Brown = Data
Fig. 3
Start and End Sequences for Magnetic Timing
Fig. 4
Data Timings for Magnetic Emulation
Fig. 5
The magnetic Emulation Sequence starts with the Card Present Line going active (down). There next
follows 10 clocks with Zero ‘0’ data. At the end of the 10 leading clocks the start character (11010) is
sent and this is followed by the data. At the end of the data the end character is sent followed by the
LCR. Finally 10 trailing clocks are sent and the card present line is raised.
The data bit duration is approximately 330uS. The approximate clock duration is 110uS. Because of the
symmetry data can be clocked off either the rising or falling edge of the clock.
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6
ID-3/12/20 LA Series Datasheet X2
25.1.2015
6. Pin Description & Output Data Formats
Pin #
Description
ASCII
Magnet
Emulation
Wiegand26
Pin 1
Zero Volts
GND 0V
GND 0V
GND 0V
Pin 2
Strap to Pin11
Reset Bar
Reset Bar
Reset Bar
Pin 3
To External Antenna
ID-3LA only
Antenna
Antenna
Antenna
Pin 4
To External Antenna
ID-3LA only
Antenna
Antenna
Antenna
Pin 5
Card Present
No function
Card Present*
No function
Pin 6
Tag in Range (Future)
Tag in Range
Tag in Range
Tag in Range
Pin 7
Format Selector (+/-)
Strap to GND
Strap to Pin 10
Strap to +5V
Pin 8
Data 1
CMOS
Clock*
One Output*
Pin 9
Data 0
TTL Data (inverted)
Data*
Zero Output*
Pin 10
3.1 kHz Logic
Beeper / LED
Beeper / LED
Beeper / LED
Pin 11
DC Voltage Supply
+2.8 thru 5V
+2.8V thru 5V
+2.8V thru 5V
* Requires 4K7 Pull-up resistor to +5V
Pin1 is the zero volts supply pin and the communications common ground.
Pin2 is used in manufacture and should be strapped to pin11 at all times.
Pin3 is only connected on the ID-3LA and it should be connected to an external antenna of
1.337mH. On the ID-12LA and ID-20LA modules pin3 should be left blank.
Pin4 is only connected in the ID-3LA. It should be connected to an external antenna. It should be
left blank on the ID12LA and ID20LA modules.
Pin5 is only used as a ‘Card Present’ output when the output format is set to Magnetic Emulation.
For timings see the ‘Magnetic Emulation Waveforms in section 5.
Pin6 is used as a ‘Tag in Range’ indicator. When a tag is in range the pin is set to VDD voltage else it
is at 0v. Pin6 output has an internal 3K3 resistor and may be used to drive an LED directly.
Pin7 is the format selector. The format selector selects the format depending where it is connected.
See table above. Note that the output format is decided at switch on and cannot be changed later.
Pin8 has alternate functions. When the output format is set to Magnetic Emulation pin8 is used as
the ‘Clock’ output. For timings see the ‘Magnetic Emulation Waveforms in section 5. The alternate
mode is active when the output format is set to ASCII and pin8 then outputs the ASCII data. Pin 8
may be used to connect to a computer RS232 input. See section on connecting to a computer.
Pin9 is active when the output format is set to ASCII and it outputs complementary (inverted) ASCII
data output. Pin 9 is also suitable for connection to a UART.
Pin10 is the beeper out pin. When the beeper is active pin10 delivers an output square wave of
approximately 3.3KHz. The pin is not buffered and cannot be used to drive a beeper directly.
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ID-3/12/20 LA Series Datasheet X2
25.1.2015
Pin11 is the DC supply pin. The supply voltage must be free from noise and preferably from a linear
regulator with less than 3mV PKPK noise. Many modern regulators have noise below 100uV RMS
and these are ideal. See the section on choice of power supply.
7. Absolute Maximum Ratings
Maximum voltage applied to Pin 2
(Vcc)
5.5volt
Maximum voltage applied to Pin 2
(Reset)
Vcc + 0.7v, -0.7v
Maximum current drawn from Pin 3
(Antenna)
+/- 75mA
Maximum 125 KHz RF Voltage at Pin 4
(Antenna)
+/- 80volt Peak
Maximum current drawn from Pin 5
(Card Present)
+/- 5mA
Maximum current drawn from Pin 6
(Tag in Range)
+/- 5mA
Maximum Voltage at Pin 7
(Format Selector)
Vcc + 0.7v, -0.7v
Maximum current drawn from Pin 8
(Data1)
+/- 5mA
Maximum current drawn from Pin 9
(Data0)
+/- 5mA
Maximum current drawn from Pin 10
(Beeper)
+/- 10mA
Additionally, Pins 5, 6, 7, 8, 9 & 10 may not have a voltage exceeding
Vcc + 0.7v, -0.7v
These ratings are absolute maximums and operation at or near the maximums may cause stress
and eventual damage or unpredictable behaviour.
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8
ID-3/12/20 LA Series Datasheet X2
25.1.2015
8. Circuit Diagram
8.1 Circuit Diagram for ID-12LA, ID-20LA
Parts List
Part #
Value
R1
100R
R2
4K7
R3
2K2
C1
10uF 25v electrolytic
C2
1000uF 10v electrolytic
C3
100nF
Q1
BC457 or similar
LED1
Read LED
LED2
Tag In Range LED
B1
2.7khz – 3kHz 5v PKPK AC
Parts List
8.2 Circuit Diagram for ID-3LA
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Part #
Value
R1
100R
R2
4K7
R3
2K2
C1
10uF 25v electrolytic
C2
1000uF 10v electrolytic
C3
100nF
L1
1.337mH
Q1
BC457 or similar
LED1
Read LED
LED2
Tag In Range LED
B1
2.7khz – 3kHz 5v PKPK AC
9
ID-3/12/20 LA Series Datasheet X2
25.1.2015
9. Dimensions (mm)
ID-3LA
Nom.
Min.
Max.
A
12.0
11.6
12.4
B
8.0
7.6
8.4
C
15.0
14.6
15.4
D
20.5
20.0
21.5
E
18.5
18.0
19.2
F
14.0
13.0
14.8
G
22.0
21.6
22.4
P
2.0
1.8
2.2
H
5.92
5.85
6.6
J
9.85
9.0
10.5
W
0.66
0.62
0.67
ID-3LA
ID-12LA
Nom.
Min.
Max.
A
12.0
11.6
12.4
B
8.0
7.6
8.4
C
15.0
14.6
15.4
D
25.3
24.9
25.9
E
20.3
19.8
20.9
F
16.3
15.8
16.9
G
26.4
26.1
27.1
P
2.0
1.8
2.2
H
6.0
5.8
6.6
J
9.9
9.40
10.5
W
0.66
0.62
0.67
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ID-12LA
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ID-3/12/20 LA Series Datasheet X2
25.1.2015
ID-20LA
Nom.
Min.
Max.
A
12.0
11.6
12.4
B
8.0
7.6
8.4
C
15.0
14.6
15.4
D
40.3
40.0
41.0
E
27.8
27.5
28.5
F
22.2
21.9
23.1
G
38.5
38.2
39.2
P
2.0
1.8
2.2
H
6.8
6.7
7.0
J
9.85
9.4
10.6
W
0.66
0.62
0.67
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ID-20LA
11
ID-3/12/20 LA Series Datasheet X2
25.1.2015
10. Connection direct to a computer
Direct connection to a computer RS232 can be made by connecting Pin8 to a 1k series resistor and
connecting the other end of the resistor to the computer RS232 input. The mode is called pseudo
RS232. On a standard D9 socket, connect module Pin8 via the series 1k to pin2 of the D-type.
Connect the ground to Pin5 on the D-type. Leave the TX pin3 open. See “Useful Information” below
for free terminal download information.
Note that a +2.8v rail will result in the data outputs having a lower swing and may not be suitable for all computers.
10.1 Connection to a Processor UART
Direct connection to UART is made by connecting Pin9 to the UART Rx in pin
10.2 Connecting a Read LED
Sometimes the user may not want to drive a beeper but may still need to drive an LED. In this case a
driver transistor may not be necessary because the Beeper Output Pin can supply 5mA
continuously. Connect a 1k5 resistor to the Beeper Pin. This will limit the current. Connect the other
end of the resistor to the LED anode and connect the cathode to ground.
11. Useful information
For general testing we suggest the user downloads a terminal program free from the internet. Here
is one particularly good one to consider:
http://braypp.googlepages.com/terminal - Truly an excellent piece of software, the best terminal
we have ever seen.
If you have any technical queries please contact your local distributor, they have all the technical
resources to help you and support you. Where no local distributor exists, our technical helpline may
be contacted by writing to help@ID-Innovations.com
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ID-3/12/20 LA Series Datasheet X2
25.1.2015
12. Choice of Power Supply
The choice of power supply is very important. The ideal power supply will be a linear type such as
an LM7805 or a 3.3 volt equivalent. Batteries may also be used without a regulator, a suitable
arrangement can consist of a 3volt lithium cell or 3x 1.5v cells to give 4.5 volts. Note that
ID-Innovations will be introducing a low-range series of micro-power reader modules (current
<1mA) with the same pin out.
Switching power supplies are gaining increasing popularity, however switching supplies can present
several problems for 125 KHz readers. The switching frequency must not be close to a multiple of
125 KHz or severe interference can result which will reduce the read range. Another issue with
switching supplies is output voltage ripple. For good range the output ripple should be less than
3mV PKPK. This is very demanding on switching power supplies. Some recommended solutions are
shown below for use with working with switching power supplies.
The upper diagram shows a low pass filter which may help increase range if the output ripple from
the switching power supply is less than 10mV PKPK. The best solution, and the one which takes up
less space, uses an SOT23 linear LDO regulator. The circuit employs a Zetex device which may also
be powered down. Alternatively a Microchip MCP1702 could be considered, however the maximum
current is limited to 50mA and may not be suitable for the ID-3LA in some circumstances.
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ID-3/12/20 LA Series Datasheet X2
25.1.2015
13. Designing Coils for ID-3LA
The recommended Inductance is 1.337mH to be used with the internal tuning capacitor of 1n2. In
general the bigger the antenna the better, provided the reader is generating enough field strength
to excite the tag. The ID-3LA is relatively low power so a maximum coil size of 15x15cm is
recommended if it is intended to read ISO cards. If the reader is intended to read glass tags the
maximum coil size should be smaller, say 10x10cm.
Long read ranges, up to 30cm and more, can be achieved with Innovations Long Range Clamshell
Cards using 10x10cm Antennas. There is a science to determine the exact size of an antenna but
there are so many variables that in general it is best to get a general idea after which a degree of
‘Try it and see’ is unavoidable. If the reader is located in a position where there is a lot of heavy
interference then less range cannot be avoided. In this situation the coil should be made smaller to
increase the field strength and coupling. It is difficult to give actual examples of coils for hand
wounding because the closeness and tightness of the winding will significantly change the
inductance. A professionally wound coil will have much more inductance than a similar hand wound
coil.
For those who want a starting point into practical antenna winding it was found that 71 turns on a
120mm diameter former gave an inductance of 1.33mH.
Sometimes the antenna coil is necessarily surrounded by a metallic enclosure or has an adjacent
copper PCB plane. Both these can behave like a shorted turn. A shorted turn has the effect of
setting up a current in opposition to the ID-3LA antenna coil current and is analogous to adding a
negative inductance. Some range can be clawed back by either increasing the inductance or
increasing the capacitance. If the experimenter has an inductance meter that works at 100 KHz then
he can adjust the inductance back to 1.337mH by winding extra turns. Failing this an external
capacitance, C3, can be increased to offset the lower inductance and bring the antenna back to
tune.
Remember, that normally there is no need for external capacitance, because the ID2-LA has an
internal capacitor of 1N2, which perfectly tunes the recommended inductance of 1.337mH.
Warning. Do not exceed the stated maximum voltages and currents for the ID2-LA RF output.
Anybody who wishes to be more theoretical we recommend a trip to the Microchip Website where we found an
application sheet for Loop Antennas. All the same, once the user has got some theoretical knowledge, the advice of
most experts is to suck it and see. http://ww1.microchip.com/downloads/en/AppNotes/00831b.pdf
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ID-3/12/20 LA Series Datasheet X2
25.1.2015
14. Fine Tuning the ID-3LA
We recommend using an oscilloscope for fine-tuning. Connect the oscilloscope to observe the
125kHz AC voltage across the coil. Get a sizeable piece of ferrite and bring it up to the antenna loop.
If the voltage increases then more inductance is required. If the voltage decreases as the ferrite is
brought up to the antenna then the inductance is too great. If no ferrite is available then a piece of
aluminium sheet may be used for testing in a slightly different way. Opposing currents will flow in
the aluminium and it will act as a negative inductance. If the 125kH AC voltage increases as the
aluminium sheet approaches the antenna then the inductance is too high. Note it may be possible
that the voltage will first maximize then decrease. This means that the module is near optimum
tuning. When using ferrite for test then it implies that the coil is a little under value and when using
aluminium sheet it implies the coil is a little over value.
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15
ID-3/12/20 LA Series Datasheet X2
25.1.2015
15. ID-3LA Compatibility Issues with the ID-2
With the exception of pin6, which should be left unconnected in the ID-2, and which now serves as
a ‘Tag in range Pin’, the ID2-LA is 100% pin compatible and supply voltage compatible with the ID-2
and its read and output data functionality is also 100% compatible, the only difference is the RF
drive power and tuning. The original ID-2 employed an internal 1n5 (0.0015uF) capacitor and an
external 1.07mH search coil, the ID2-LA employs an internal 1n2(0.0012uF) capacitor and an
external 1.337mH search coil.
The ID2-LA has a greater RF drive than the ID-2 and the internal tuning capacitor (1n2) requires an
external antenna inductance of 1.337mH. If this value inductance is used an external tuning
capacitor is not required.
Note that the original ID-2 search coil (value 1.07mH) may still be used if a 180pF or a 220pF
external COG capacitor is added across pins 1 and 4. As with the ID-2, the ID2-LA internal tuning
capacitor can be accessed on pins 1 and 4. If an external capacitor is added it should be a 100v
180pF COG or a 100v 220pF COG. The ID2-LA RF output drive is greater than the ID-2 RF drive. Users
wishing to migrate to the ID2-LA should ensure that the RF voltage and current limits are not
exceeded.
16. ID-12LA, ID-20LA Compatibility Issues with ID-12, ID-20
With the exception of pin6, which should be left unconnected in the ID-12 and ID-20, and which
now serves as a ‘Tag in range Pin’, the ID12-LA and ID20-LA is 100% pin compatible and supply
voltage compatible with the ID-12 and ID-20 and its read and output data functionality is also 100%
compatible.
17. Layout Precautions for ID-12LA and ID-20LA
The layout of the mother board is important. Below is a short list of steps to ensure good read
range.
1) Never put a copper ground plane under an ID-12LA or an ID-20LA. The antenna in the
module will couple with the copper and the copper will act as a shorted turn. A shorted turn
acts much like a negative inductance and will detune the antenna in the module.
2) Never run a noisy supply track under the module. The track will couple with the antenna and
the noise will reduce the read range.
3) Never run the tracking of decoupling capacitors for other circuitry, processor etc., under the
module.
4) Track the module supply decoupling capacitor as close to pin1 and pin11 as possible.
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ID-3/12/20 LA Series Datasheet X2
25.1.2015
5) Use a linear regulator for the supply if possible. If a switching power must be used then see
the section on choice of power supply.
6) If a switching supply is present on the same mother board, and uses an inductor, consider
rotating the inductor to obtain the least coupling with the module antenna.
7) Preferably power the beeper from another supply. Beepers can draw large current that can
cause the module supply voltage to dip momentarily causing a module brown out reset or
other erratic malfunction.
Note. Low power regulators are less expensive, easier to configure, take up less room and noise
is easier to control. If long read-range is not critical to your application, consider the
ID-Innovations micro power range of pin compatible modules; these typically draw less than 100
micro amperes at 3v.
18. Contact Information
Head Office—Australia
ID Innovations
21 Sedges Grove
Canning Vale, W.A. 6155
Telephone: +61 8 94554615
Fax: +61 8 94553615
Distributor—P.R. China
Shanghai Jishi Identification Co. Ltd.
C/4F South building
No 829 Yi Shan Road
Shanghai 200233, P.R.China
上海宜山路 829 号南 4 楼 C 邮编 200233
Telephone: +86 21 64955114
www.id-innovations.com
Fax: +86 21 64950750
17
ID-3/12/20 LA Series Datasheet X2
25.1.2015
Disclaimer
The information in this document is provided solely for the use of ID Innovations’ products. There
are no express or implied copyright licenses or intellectual property rights granted to design or
fabricate any of ID Innovations’ products based on the information provided in this document.
ID Innovations reserves the right to make changes to specifications and product descriptions at any
time without notice.
The specifications provided in ID Innovations’ datasheets can and do vary in
different applications and actual performance may vary over time.
ID Innovations’ products are not intended for and will not be used in life support systems, human
implantation, nuclear facilities or systems or any other application where product failure could lead
to loss of life or catastrophic property damage.
ID Innovations makes no warranty, representation or guarantee regarding the suitability of its
products for any purpose, and it assumes no liability, whether claim, loss, damage or expense of
any kind caused in whole or in part, directly or indirectly by the inadequacy of any products for any
purpose, any infringement, deficiency or defect in any products whether or not covered by any
manufacturer’s warranty, the use or performance of any products, any interruption or loss of
service, or any special, direct, indirect, incidental or consequential damage, including, without
limitation, personal injury or loss of business or profit, or other damage, whether or not ID
Innovations has been informed of the possibility or likelihood of such or any other damages, arising
out of the application or use of any product and information provided.
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