www.ams.com Revision 1.1/ 24/02/13 page 1/20
AS3933
3D Low Frequency Wakeup Receiver
Application Note:
AS3933
-
AN01
–
Demoboard
Description
AS3933-AN01
Demoboard Description
www.ams.com Revision 1.1/ 24/02/13 page 2/20
Table of Contents
1
General Description ............................................................................................................. 4
2
Kit Content ........................................................................................................................... 4
3
Getting Started ..................................................................................................................... 4
4
Hardware Description........................................................................................................... 4
4.1
AS3933 Demoboard............................................................................................................. 4
4.2
125kHz Wake-up Transmitter Board.................................................................................... 6
5
Software Description ............................................................................................................ 7
5.1
Installing the GUI .................................................................................................................. 7
5.2
Description of the GUI of the Receiver ................................................................................ 8
5.2.1
Channel Enable .................................................................................................................... 8
5.2.2
Low Power Mode ................................................................................................................. 8
5.2.3
Clock Generator ................................................................................................................... 9
5.2.4
Calibrate RC Oscillator ........................................................................................................ 9
5.2.5
Antenna Damper .................................................................................................................. 9
5.2.6
Envelope Detector Time Constant ....................................................................................... 9
5.2.7
Data Slicer ............................................................................................................................ 9
5.2.8
Comparator Hysteresis ........................................................................................................ 9
5.2.9
Gain Reduction .................................................................................................................... 9
5.2.10
Frequency Detection Tolerance ......................................................................................... 10
5.2.11
General Settings ................................................................................................................ 10
5.2.12
Wakeup Pattern (Manchester) ........................................................................................... 10
5.2.13
Correlator ........................................................................................................................... 10
5.2.14
Automatic Time-Out ........................................................................................................... 11
5.2.15
Clear Wake ........................................................................................................................ 11
5.2.16
Symbol Rate ....................................................................................................................... 11
5.2.17
Check Resonance Frequency ............................................................................................ 11
5.2.18
Input Capacitor Bank.......................................................................................................... 11
5.2.19
Artificial Wakeup ................................................................................................................ 11
5.2.20
Clear False Wakeup........................................................................................................... 11
5.2.21
Reset RSSI ........................................................................................................................ 11
5.3
Description of the GUI of the Transmitter .......................................................................... 12
5.3.1
Duration of Carrier Burst .................................................................................................... 12
5.3.2
Number of Preamble Symbols ........................................................................................... 12
AS3933-AN01
Demoboard Description
www.ams.com Revision 1.1/ 24/02/13 page 3/20
5.3.3
Symbol Rate ....................................................................................................................... 12
5.3.4
Enable Buzzer .................................................................................................................... 13
5.3.5
Wakeup Pattern (Manchester) ........................................................................................... 13
5.3.6
Manchester Pattern Length ................................................................................................ 13
5.3.7
Correlator ........................................................................................................................... 13
6
Board Schematics, Layout and BOM ................................................................................. 14
6.1
AS3933 Demoboard Schematic ......................................................................................... 14
6.2
AS3933 Demoboard Layout ............................................................................................... 15
6.3
AS3933 Demoboard BOM ................................................................................................. 16
6.4
125 kHz Wake-up Transmitter Board Schematics ............................................................. 17
6.5
125 kHz Wake-up Transmitter Board Layout ..................................................................... 17
6.6
125 kHz Wake-up Transmitter Board BOM ....................................................................... 18
7
Ordering Information .......................................................................................................... 19
Revision History
Revision Date Owner Description
1.0 20.07.2010 JPE Initial release
1.1 24.02.2013 JRY Update to corporate format
AS3933-AN01
Demoboard Description
www.ams.com Revision 1.1/ 24/02/13 page 4/20
1 General Description
With the AS3933 Demoboard it is possible to demonstrate the chip’s features as described in the
AS3933 datasheet. The 125kHz Wake-up Transmitter Board is included to offer the user a complete
system for evaluation purposes. This application note describes the operation of the two boards and
gives details on the hardware and software implemented in the demokit.
2 Kit Content
The kit comprises
• 1x 125kHz Wake-up Transmitter Board
• 1x AS3933 Demoboard
• 2x CR2032 coin cells
• 1x USB cable
• 1x USB stick
3 Getting Started
• Connect the +9V DC power supply F to the 125kHz Wake-up Transmitter Board.
• Insert the +3V battery at H of the AS3933 Demoboard
• Turn on the AS3933 Demoboard via the ON/OFF-Switch C. All LEDs flash up once.
• Start transmitting wake-up patterns via AUTO E of PATTERN B.
• As soon as the AS3933 Demoboard receives a wake-up pattern the RSSI LEDs flash up for
0.5s and show the momentary received signal strength. At the same time the X, Y, or Z
LED flash up indicating which channel receives the strongest signal.
4 Hardware Description
4.1 AS3933 Demoboard
Figure 1: AS3933 Demoboard Top and Bottom
A
C
D
E
F
H
G
AS3933-AN01
Demoboard Description
www.ams.com Revision 1.1/ 24/02/13 page 5/20
Figure 2: User Interface Description
Label
Name Description Info
A BUTTON
Long press (1.5s) tunes
the antenna Each axis (X,Y, and Z) of the LF antenna can be
tuned exactly to 125kHz. The resonance
frequency of each channel can be read out via the
GUI.
1x short press reads
the false wake-ups The number of false wake-ups can be read out
and displayed via the RSSI-LEDs.
2x short press (double
click) clears the false
wake-ups
Pressing FALSE WAKEUP twice in quick
succession resets the number of false wake-ups.
Each RSSI-LED lights up shortly.
C ON/OFF ON/OFF-Switch Power on/off the Demoboard. Source (battery or
USB) is automatically detected.
G USB-
Connector Mini USB 5-pin
Connector USB interface for GUI.
H CR2032
Battery Battery Holder Insert CR2032 coin cell here.
Figure 3: Indication LEDs
LED Color Info
RSSI
(5 bit) Red
LEDs Received Signal Strength Indication. Displays the actual received signal
strength whenever a WAKEUP occurs. When pressing FALSE WAKEUP
these LEDs display the number of false wake-ups that occurred.
X Red LED Strongest wake-up signal received on channel 1 (X)
Y Red LED Strongest wake-up signal received on channel 2 (Y)
Z Red LED Strongest wake-up signal received on channel 3 (Z)
Figure 4: Jumper Description
Jumper
Name Description Info
F IDD Supply
Current The supply current of the AS3933 can be measured here. Set
this jumper for normal operation.
D
AS3933 specific outputs
D1 WAKE Wake Output Interrupt
D2 DAT Data Output
D3 CL_DAT Manchester Recovered Clock
E Microcontroller
interface The SDI interface from the microcontroller can be replaced by a
proprietary solution
E1 CS Serial Digital Interface Chip Select
AS3933-AN01
Demoboard Description
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Jumper
Name Description Info
E2 SCL Serial Digital Interface Clock
E3 SDI Serial Digital Interface Input
E4 SDO Serial Digital Interface Output
E5 GND Ground (0V)
Note: When the AS3933 Demoboard is connected to the GUI it is necessary to RESET the device
by turning the AS3933 off and on via switch C. Another possibility to prepare the Demoboard for
USB connection is to press buttons A and B simultaneously before connecting the USB cable.
4.2 125kHz Wake-up Transmitter Board
Figure 5: 125kHz Wake-up Transmitter Board
Figure 6: User Interface Description
Label
Name Description Info
A PATT+DATA Pattern+Data –
Button The transmitter continuously sends the wake-up
pattern plus data (01010101).
B PATT Single-Pattern –
Button The transmitter sends a single wake-up pattern.
C AUTO Automatic Pattern –
Button The transmitter sends a wake-up pattern every 1s.
D STOP Stop Pattern –
Button The transmitter stops transmitting.
E USB-
Connector Mini USB 5-pin
connector USB interface for the GUI.
F Power Supply +9V/2A DC Power
Supply Insert main power adapter here.
E
A
B
C
D
F
AS3933-AN01
Demoboard Description
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Figure 7: Indication LEDs/ Buzzer
LEDs Color Info
G Buzzer The buzzer signals whenever a wake-up pattern is transmitted. This
feature makes range measurements easier. The buzzer can be disabled
via the GUI.
STANDBY Red
LED Transmitter is on stand-by. No wake-up pattern is sent.
Pattern Red
LED Wake-up pattern is transmitted.
Pattern+Data
Red
LED Wake-up pattern plus data is transmitted.
Note: Before connecting the 125kHz Wake-up Transmitter Board to the GUI the transmission of
wake-up patterns needs to be terminated by pressing button D.
5 Software Description
5.1 Installing the GUI
• Execute the AS3933_EvalSW.msi
• Follow the installation guide
• Run the GUI AS3933_EvalSW.exe
Note: Before connecting the 125 kHz Wake-up Transmitter Board to the GUI press button D to stop
transmitting wake-up patterns.
AS3933-AN01
Demoboard Description
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5.2 Description of the GUI of the Receiver
Figure 8: Graphical User Interface of the AS3933 Demoboard
All adjustments can be saved via Store Settings in the lower right corner of the Receiver tab. If all
settings should be reset to the default configuration push the button Preset Default. All
configurations that are set by the GUI correspond to the Register Map of the AS3933. The Register
Map can be viewed via View/Register Map (Ctrl+M). All registers can be updated manually via
File/Readout Registers (Ctrl+R) or the update of the registers is done automatically via
File/Automatic Update (Ctrl+U).
Note: A possible firmware update can be done via Help/Firmware Update (Ctrl+F). Load the latest
*.bin file and update the firmware.
5.2.1 Channel Enable
The AS3933 Demoboard has a three dimensional antenna. Each of the three antenna inputs can be
enabled or disabled.
5.2.2 Low Power Mode
The AS3933 features two low power modes, which can be selected here. By default no power
saving mode is enabled which means that all channels are active all the time. For details on the low
power modes please see the AS3933.
AS3933-AN01
Demoboard Description
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5.2.3 Clock Generator
The clock source for the AS3933 can be selected here. The AS3933 Demoboard has an on-board
crystal oscillator that is used by default. In case the RC oscillator is used it can be calibrated to
achieve a higher precision.
5.2.4 Calibrate RC Oscillator
The RC oscillator can be calibrated via the microcontroller or the LC antenna.
5.2.5 Antenna Damper
The antenna can be damped in order to limit the range. Therefore a resistor inside the AS3933 is
switched into parallel to the antenna. The value of the resistor can be selected between 1kΩ to
27kΩ.
5.2.6 Envelope Detector Time Constant
The performance of the Demodulator can be optimized according to the bit rate and preamble
length. For a higher bit rate the time constant needs to decrease. Adjust the Envelope Detector’s
time constant according to your symbol rate. The recommended time constants for different symbol
rates are listed in the datasheet.
5.2.7 Data Slicer
There are two possibilities to set the threshold level for the Data Slicer: the dynamic threshold and
the absolute threshold. The absolute threshold is set by selecting the hard threshold enable bit. In
quit environments (no noise sources present) the absolute threshold can be reduced by additionally
setting the hard threshold reduction bit. The dynamic threshold is enabled automatically when the
hard threshold enable bit is not set.
In case the dynamic threshold is enabled the noise immunity of the Data Slicer can be adjusted via
the Data Slicer time constant. Increasing this time constant will result in improved noise immunity
only if the minimum preamble length is also adjusted. Therefore, it is not possible to select a
specific Data Slicer time constant in the GUI but different minimum preamble lengths. The Data
Slicer’s time constant is internally linked to this setting. The recommended minimum preamble
lengths for different Data Slicer time constants are listed in the datasheet.
5.2.8 Comparator Hysteresis
The Data Slicer’s comparator hysteresis can be adjusted between 20mV and 40mV. Furthermore,
the data slicer hysteresis can be active for either only positive edges or for both (positive and
negative) edges.
5.2.9 Gain Reduction
The Gain Reduction of the channel amplifier can be selected between 0dB up to -24dB. When the
setting AGC UP-DOWN is selected the maximum achievable gain is also defined by this setting.
AS3933-AN01
Demoboard Description
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5.2.10 Frequency Detection Tolerance
The Frequency Detection Tolerance can be tighter or more relaxed. For details please see the
datasheet.
5.2.11 General Settings
• Enable sensitivity boost: The channel amplifier gain is boosted to +3dB.
• AGC only on carrier burst: The automatic gain control is acting only on the first carrier burst.
• AGC UP-DOWN: The automatic gain control is operating in both directions (up and down).
At the beginning the gain of the channel amplifier is set to the maximum and the AGC
reduces it according to the received signal input level. If AGC UP-DOWN is disabled the
AGC can only decrease the gain for the whole duration of the data reception. In this mode
the system holds the RSSI peak.
• Mask data before wakeup: During the pattern correlation it is possible to display the data
(received preamble + pattern) on the DAT pin, if this bit is disabled. Otherwise, this will be
masked. In case the user decides to mask the data before the generation of the interrupt on
the pin WAKE, then the data will be displayed only after the generation of the interrupt.
• Display clock generation: The clock generator output signal is displayed on CL_DAT pin.
5.2.12 Wakeup Pattern (Manchester)
Select the wake-up pattern here. Each field defines 4 bit. If the transmitted pattern matches the
selected pattern, a wake-up interrupt is generated at the WAKE pin. The WAKE pin goes high.
5.2.13 Correlator
• Enable Correlator: If the Correlator is enabled the chip searches first for the preamble bits
and then for data pattern (Manchester encoded wake-up pattern). Should the pattern
correlation be disabled, the AS3933 goes directly into the data receiving mode.
• Enable Manchester decoder: If the Manchester decoder is enabled the data on the DAT pin
can be directly read binary. In addition, the recovered clock is presented on the CL_DAT
pin.
• Manchester Pattern Length: the Manchester pattern length can be selected between 16bit
and 32bit. The possible selection of the wake-up pattern (Manchester) is changed
accordingly.
• 16 bit pattern length: Each field of the wake-up pattern defines 4 bit, which are directly
Manchester encoded.
Example: 9 6 6 9 (Manchester) 1001 0110 0110 1001 (binary, Manchester conform);
sum = 16bit
• 32 bit pattern length: Each field of the wake-up pattern identifies 4 bit, which are
hexadecimal encoded. Each bit defines one Symbol and is converted to Manchester by the
microcontroller in the second step.
Example: 7 B A 5 (Symbol) 0111 1011 1010 0011 (binary) 10010101 01100101
01100110 10100101 (binary Manchester conform); sum = 32 bit
• Single pattern: The wakeup pattern is sent as single string.
AS3933-AN01
Demoboard Description
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• Double pattern: The wakeup pattern is doubled.
5.2.14 Automatic Time-Out
The Automatic Time-Out resets the WAKE pin automatically after a certain time. This time can be
selected between 0ms and 350ms.
5.2.15 Clear Wake
The Clear Wake button resets the WAKE pin manually.
5.2.16 Symbol Rate
The symbol rate can be adjusted between 512 Symbols/s and 4096 Symbols/s. The symbol sate
defines the duration of one bit via the 32.768 kHz clock in order to recover the data.
5.2.17 Check Resonance Frequency
The resonance frequency of all three channels of the antenna can be measured. This helps in
finding the correct capacitance to bring the LC circuit in resonance.
Note: It is important to reset this field to none in order to continue with other settings.
5.2.18 Input Capacitor Bank
The internal capacitor bank can be changed on each channel between 0pF and 32pF in order to
tune the antenna to the desired resonance frequency. The AS3933 Demoboard provides a switch to
tune the antenna automatically to 125 kHz. The internal capacitor bank is changed until the
resonance frequency of 125 kHz is achieved. After this procedure the register map can be updated
manually via File/Readout Registers (Ctrl+R) in order to see the added capacitors at each channel.
5.2.19 Artificial Wakeup
It is possible to enable the Artificial Wakeup with a wake-up period between 1s and 2 hours.
5.2.20 Clear False Wakeup
The false wake-up register counts the number of frequency detections that do not match the wake-
up pattern. The actual number of false wake-ups can be deleted via the Clear False Wakeup button.
5.2.21 Reset RSSI
Reset the current RSSI measurement.
AS3933-AN01
Demoboard Description
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5.3 Description of the GUI of the Transmitter
Figure 9: Transmitter tab of the AS3933 GUI
All adjustments can be saved via Store Settings in the lower right corner of the Transmitter tab. If all
settings should be reset to the default configuration push the button Restore Default Settings.
5.3.1 Duration of Carrier Burst
The duration of the carrier burst can be set in multiples of carrier cycles (0-500 x 8µs) or in
milliseconds (1-3).
5.3.2 Number of Preamble Symbols
The carrier burst must be followed by a separation bit and at least 3 symbols preamble. The actual
number of preamble symbols can be adjusted here.
5.3.3 Symbol Rate
The symbol rate can be adjusted between 512 Symbols/s and 4096 Symbols/s. The symbol rate
must be the same as at the settings made with the AS3933 Demoboard.
AS3933-AN01
Demoboard Description
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5.3.4 Enable Buzzer
The transmitter board sends out a tone whenever a packet is transmitted. This tone can be disabled
here.
5.3.5 Wakeup Pattern (Manchester)
The wake-up pattern transmitted by the transmitter board must correlate to the wake-up pattern
expected by the AS3933 Demoboard for successful wake-up generation. For more details on the
wake-up pattern see section 5.2.12.
5.3.6 Manchester Pattern Length
Please see description above in section 5.2.13.
5.3.7 Correlator
Please see description above in section 5.2.13.
Note: It is important to note that the symbol rate, wake-up pattern, pattern length, and the
Correlator have the same settings at the AS3933 Demoboard and the 125kHz Wake-up Transmitter
Board. Otherwise the demoboard will not recognize the signal that is transmitted by the 125 kHz
Wake-up Transmitter Board. If something does not work, restore the default settings at the
demoboard and transmitter board.
AS3933-AN01
Demoboard Description
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6 Board Schematics, Layout and BOM
6.1 AS3933 Demoboard Schematic
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D D
C C
B B
A A
Size
Date
Project Title Revision
Sheet ofOriginator JRY
AS3933 Demoboard
A3
1.4
24.02.2013 3
3
R7
240k
R6
240k
R8
240k
12
3
S1
ON
GND
GND
AS3933
SDI 3
SDO 4
VCC 5
GND 6
LF3P
7
LF2P
8
LF1P
9
LFN
10
XIN
11
XOUT
12 VSS 13
WAKE 14
DAT 15
CL_DAT 16
CS 1
SCL 2
U5
AS3933
Y1
CC7V-T1A
C15
12p C16
12p
C9
100n
1
2
J2
IDD_AS
1
2
3
4
5
J4 SDI
GND
1
2
3
J5 DAT
CS
SCL
SDI
SDO
CL_DAT
DAT
WAKE
C7
100n
C14
100n
GND
PIC24FJ64GB
PGED1
1
PGEC1
2
RP2
3
RP3
4
VSS
5
RA2 6
RP4
8
RA4 9
VDD
10
RB5 11
VBUS 12
RP7
13
RP9 15
DISVREG 16
VCAP 17
D+
18
D-
19
VUSB 20
RP15 23
VSS 24
VDD 25
MCLR
26
RP5
27
RP6
28
RA3 7
RP8
14 RP13 21
RP14 22
EP
29
U4
PIC27FJ64GB002
1
2
3
4
5
J3 ICP
GND
R5
10k
AS1746
10
9
4
3
2
VDD 1
8
7
GND 6
5
NO1
COM1
IN1
NC1
NO2
COM2
IN2
NC2
EP 11
1
AS1746
C5
100n
GND
C12
150p
C11
180p
C19
18p
VBUS
D-
D+
D-
D+
C3
1u
GND
GND
C1
10n C4
1u
GND
R1
100k
VBUS
GND
C2
10u
BATT
BATT
GND
VDD_RF
VDD_RF VDD_RF
VDD_UC
VDD_UC
GND
C10
10u
D1
Z
R9
680
VDD_UC
D2
RS0
R10
680
D3
RS1
R11
680
D4
RS2
R12
680
D5
X
R13
680
D6
Y
R14
680
D7
RS4
R15
680
D8
RS3
R16
680
LEDX
LEDY
S2
Mode
C6
10n
GND
BUTTON
GND
BUTTON
LEDX
LEDY
+-
U3
Batterie
C17
18p
C18
3p
C13
150p
C20
4.7u
GND
AS1362
IN
1
SHDNN
3
GND
2
POK 4
BYPASS 5
OUT 6
U1
AS1362
GND
R17
100k
GND
POK
POK
LY
Y-axis 125kHz coil
LX
X-axis 125kHz coil
LZ
Zcoil
D9
ON
R20
3k9
GND
D10
24V
D11
24V D12
24V
D13
Zener
GND GND GND
GND
GND
BUS_PWR 1
D- 2
D+ 3
BUS_GND 4
Shield 5
6
7
8
9
U2
USB_MINI_B
AS3933-AN01
Demoboard Description
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6.2 AS3933 Demoboard Layout
Figure 10: AS3933 Demoboard Layout –Top Layer
Figure 11:AS3933 Demoboard Layout – Bottom Layer
AS3933-AN01
Demoboard Description
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6.3 AS3933 Demoboard BOM
AS3933-AN01
Demoboard Description
www.ams.com Revision 1.1/ 24/02/13 page 17/20
6.4 125 kHz Wake-up Transmitter Board Schematics
6.5 125 kHz Wake-up Transmitter Board Layout
Figure 12: 125 kHz Wake-up Transmitter Board Layout – Top Layer
Figure 13: 125 kHz Wake-up Transmitter Board Layout – Bottom Layer
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D D
C C
B B
A A
Size
Date
Project Title Revision
Sheet ofOriginator JRY
125kHz Wakeup Transmitter BoardA3 2.0
07/02/2013 3
3
C9
100n
C14
100n
GND
PIC24FJ64GB
PGED1
1
PGEC1
2
RP2
3
RP3
4
VSS
5
RA2 6
RP4
8
RA4 9
VDD
10
RB5 11
VBUS 12
RP7
13
RP9 15
DISVREG 16
VCAP 17
D+
18 D-
19
VUSB 20
RP15 23
VSS 24
VDD 25
MCLR
26
RP5
27
RP6
28
RA3 7
RP8
14 RP13 21
RP14 22
EP
29
U3
PIC27FJ64GB002
1
2
3
4
5
J2 ICP
GND R5
10k
GND
VBUS
D-
D+
D-
D+
C3
1u
GND
GND
C4
1u
GND
VBUS
GND
C1
10u
GND
+3.3V
+3.3V
GND
C11
10u
+3.3V
D7
PATTD
R16
680
D8
PATT
R17
680
D9
STANDBY
R18
680
S1
Mode
C2
10n
GND GND
AUTO
S2
Mode
C7
10n
GND GND
PATT
AUTO
PATT
S3
Mode
C8
10n
GND GND
PATT+DATA
S4
Mode
C10
10n
GND GND
STOP
NMOS1
PMOS1
VIN
3VOUT 2
GND
1
U2
AS1360
R1
100k
GND
1
2
3
J1
DC_Socket_THMD
GND
+12V
D2
SK310A
+3.3V
C6
220u
GND
27
4
GND
3
5
VCC
6
U7
TC4426ACOA1
2
8
7
4
3
5
6
G
D
S
P-MOS
N-MOS
G
S
D
U4
IRF7389
1
2
8
7
4
3
5
6
G
D
SP-MOS
N-MOS
G
S
D
U5
IRF7389
2 7
4
GND
3
5
VCC
6
U6
TC4426ACOA
D4
PMEG4010
R7 18
R8 18
R9 18
R10 18
D6
PMEG4010
D5
PMEG4010
D3
PMEG4010
GNDGND
+12V +12V
+12V
C13
100n
GND
C12
100n
+12V
GND
PMOS2
NMOS2
PMOS2
NMOS2
C5
220u
GND
D1
PMEG4010
R11
1k5
p
n
X1
Piezo
GND
A1
KGEA-BFCR
PATT+DATA
STOP
Y1
8MHz
GND
GND
J3
Pad
C17
18p
C18
18p
D10
24V
D11
24V D12
24V
D13
6.8V
GND
GNDGNDGND
BUS_PWR 1
D- 2
D+ 3
BUS_GND 4
Shield 5
nc
6nc
7nc
8nc
9
H2961CT-ND
U1
USB_SMD
AS3933-AN01
Demoboard Description
www.ams.com Revision 1.1/ 24/02/13 page 18/20
6.6 125 kHz Wake-up Transmitter Board BOM
AS3933-AN01
Demoboard Description
www.ams.com Revision 1.1/ 24/02/13 page 19/20
7 Ordering Information
Figure 14: Ordering Information
Ordering Code Type Marking Delivery Form
1
Delivery
Quantity
AS3933-BTST 16-pin TSSOP AS3933 7 inches Tape &
Reel 1000 pcs
AS3933-BQFT QFN 4x4 16LD AS3933 7 inches Tape &
Reel 1000 pcs
1. Dry Pack: Moisture Sensitivity Level (MSL) = 3, according to IPC/JEDEC J-STD-033A.
Note: All products are RoHS compliant and ams green.
Buy our products or get free samples online at ICdirect: http://www.ams.com/ICdirect
Technical Support is available at http://www.ams.com/Technical-Support
For further information and requests, please contact us mailto: sales@ams.com
or find your local distributor at http://www.ams.com/distributor
AS3933-AN01
Demoboard Description
www.ams.com Revision 1.1/ 24/02/13 page 20/20
Copyright
Copyright © 1997-2012, ams AG, Tobelbader Strasse 30, 8141 Unterpremstaetten, Austria-Europe.
Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted,
merged, translated, stored, or used without the prior written consent of the copyright owner.
All products and companies mentioned are trademarks or registered trademarks of their respective
companies.
Disclaimer
Devices sold by ams AG are covered by the warranty and patent indemnification provisions
appearing in its Term of Sale. ams AG makes no warranty, express, statutory, implied, or by
description regarding the information set forth herein or regarding the freedom of the described
devices from patent infringement. ams AG reserves the right to change specifications and prices at
any time and without notice. Therefore, prior to designing this product into a system, it is necessary
to check with ams AG for current information.
This product is intended for use in normal commercial applications. Applications requiring extended
temperature range, unusual environmental requirements, or high reliability applications, such as
military, medical life-support or lifesustaining equipment are specifically not recommended without
additional processing by ams AG for each application. For shipments of less than 100 parts the
manufacturing flow might show deviations from the standard production flow, such as test flow or
test location.
The information furnished here by ams AG is believed to be correct and accurate. However, ams
AG shall not be liable to recipient or any third party for any damages, including but not limited to
personal injury, property damage, loss of profits, loss of use, interruption of business or indirect,
special, incidental or consequential damages, of any kind, in connection with or arising out of the
furnishing, performance or use of the technical data herein. No obligation or liability to recipient or
any third party shall arise or flow out of ams AG rendering of technical or other services.
