Application Note: AS3933-AN01 – Demoboard Description AS3933 3D Low Frequency Wakeup Receiver www.ams.com Revision 1.1/ 24/02/13 page 1/20 AS3933-AN01 Demoboard Description 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 www.ams.com Revision 1.1/ 24/02/13 page 2/20 AS3933-AN01 Demoboard Description 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 www.ams.com Revision 1.1/ 24/02/13 page 3/20 AS3933-AN01 Demoboard Description 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 4.1 Hardware Description AS3933 Demoboard Figure 1: AS3933 Demoboard Top and Bottom E H F D C G A www.ams.com Revision 1.1/ 24/02/13 page 4/20 AS3933-AN01 Demoboard Description Figure 2: User Interface Description Label A Name BUTTON Description Info 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 USBConnector 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. AS3933 specific outputs D1 WAKE Wake Output Interrupt D2 DAT Data Output D3 CL_DAT Manchester Recovered Clock D E Microcontroller interface The SDI interface from the microcontroller can be replaced by a proprietary solution E1 Serial Digital Interface Chip Select www.ams.com CS Revision 1.1/ 24/02/13 page 5/20 AS3933-AN01 Demoboard Description 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 F E A B C D 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 USBConnector Mini USB 5-pin connector USB interface for the GUI. F Power Supply +9V/2A DC Power Supply Insert main power adapter here. www.ams.com Revision 1.1/ 24/02/13 page 6/20 AS3933-AN01 Demoboard Description 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. www.ams.com Revision 1.1/ 24/02/13 page 7/20 AS3933-AN01 Demoboard Description 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. www.ams.com Revision 1.1/ 24/02/13 page 8/20 AS3933-AN01 Demoboard Description 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. www.ams.com Revision 1.1/ 24/02/13 page 9/20 AS3933-AN01 Demoboard Description 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) sum = 16bit • 1001 0110 0110 1001 (binary, Manchester conform); 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. www.ams.com Revision 1.1/ 24/02/13 page 10/20 AS3933-AN01 Demoboard Description • 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 wakeup 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. www.ams.com Revision 1.1/ 24/02/13 page 11/20 AS3933-AN01 Demoboard Description 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. www.ams.com Revision 1.1/ 24/02/13 page 12/20 AS3933-AN01 Demoboard Description 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. www.ams.com Revision 1.1/ 24/02/13 page 13/20 AS3933-AN01 Demoboard Description 6 Board Schematics, Layout and BOM 6.1 AS3933 Demoboard Schematic 1 2 3 4 5 6 7 8 U1 VBUS D+ A BUS_GND 3 1 DD11 24V D+ C2 10u R17 100k SHDNN C3 1u D10 24V 4 AS1362 IN 3 D13 Zener D12 24V AS1362 5 GND GND GND OUT BYPASS POK 6 C1 5 4 C4 1u 10n R1 100k GND POK 9 8 7 6 Shield 1 2 GND D- 2 U2 BUS_PWR A GND GND GND GND BATT C5 GND USB_MINI_B GND 1 11 GND EP VDD GND NO1 6 100n NO2 10 3 COM1 COM2 9 4 IN1 IN2 8 5 NC1 2 BATT NC2 7 2 S1 ON 1 U3 Batterie GND - B 1 AS1746 B 3 + AS1746 C20 4.7u VDD_UC C7 GND R20 3k9 100n ICP VBUS SDI 5 4 3 2 1 SDI 8 SDO 27 CL_DAT 28 DAT 13 WAKE 14 16 15 RP4 24 RA2 RP15 RP6 RP14 RP7 RP13 RP8 RP9 Y1 C14 J5 DAT 16 C10 10u 11 BUTTON GND GND GND 9 7 C 6 23 22 LEDX 21 LEDY 15 POK D1 Z R9 680 D2 RS0 D3 RS1 R10 680 R11 680 D4 RS2 R12 680 D5 X D6 Y R13 680 R14 680 D7 RS4 D8 RS3 R15 680 R16 680 100n CC7V-T1A VDD_UC C15 12p RA3 PIC24FJ64GB RP5 1 2 3 14 RP3 C6 10n S2 Mode 17 D+ 4 4 RA4 D- XOUT XIN 12 11 GND WAKE 3 SCL RP2 18 CL_DAT LFN DAT X-axis 125kHz coil DISVREG PGEC1 19 SDO PGED1 D+ 6 GND SDI AS3933 3 D- LF1P 2 CS EP 10 SCL LF2P GND 29 150p 18p LF3P R8 240k 2 U4 PIC27FJ64GB002 VCAP RB5 1 VSS 9 C13 C19 LEDY U5 AS3933 CS VDD 8 Zcoil LY Y-axis 125kHz coil LX 13 5 R7 240k 7 VSS R6 240k 1 10 C 150p 18p C18 C11 3p 180p VCC C12 C17 LZ LEDX VBUS J4 100n MCLR 12 20 26 GND VDD R5 10k VUSB GND VDD_RF 25 BUTTON GND C9 VSS J3 D9 ON 5 1 2 5 4 3 2 1 J2 IDD_AS GND GND C16 12p VDD_UC VDD_RF VDD_RF D D Size Project Title A3 AS3933 Demoboard Date 24.02.2013 Originator JRY 1 www.ams.com 2 3 4 5 Revision 1.1/ 24/02/13 6 Revision 1.4 Sheet 3 7 of 3 8 page 14/20 AS3933-AN01 Demoboard Description 6.2 AS3933 Demoboard Layout Figure 10: AS3933 Demoboard Layout –Top Layer Figure 11:AS3933 Demoboard Layout – Bottom Layer www.ams.com Revision 1.1/ 24/02/13 page 15/20 AS3933-AN01 Demoboard Description 6.3 AS3933 Demoboard BOM www.ams.com Revision 1.1/ 24/02/13 page 16/20 AS3933-AN01 Demoboard Description 6.4 125 kHz Wake-up Transmitter Board Schematics 1 2 3 H2961CT-ND DD+ BUS_GND A 6 7 8 1 2 D- 3 D+ D10 24V 4 D11 24V C1 10u D13 6.8V D12 24V R1 100k AUTO C2 10n S1 Mode 5 GND GND 6 7 8 9 GND GND A D1 PMEG4010 GND nc nc nc nc Shield 5 VBUS U1 BUS_PWR 4 GND GND GND USB_SMD PATT GND D2 J1 +12V 3 SK310A VIN C3 1u C6 220u DC_Socket_THMD C7 10n 2 VOUT 1 C5 220u 3 S2 Mode GND 1 2 +3.3V U2 C4 1u AS1360 GND GND GND GND GND GND GND PATT+DATA GND C8 10n +3.3V C9 S3 Mode GND B B 100n ICP VBUS 5 4 3 2 1 26 1 2 2 D6 PMEG4010 G 1 1 N-MOS IRF7389 C12 S N-MOS IRF7389 2 PMOS1 27 NMOS1 28 STOP 13 J3 14 Pad TC4426ACOA 24 RA3 RA2 RP5 RP15 RP6 RP14 RP7 RP13 RP8 RP9 +12V C14 C13 D+ D5 PMEG4010 G 7 D- D RA4 18 D 7 8 RP4 PIC24FJ64GB 19 5 6 RP3 C11 10u 16 11 AUTO 9 C10 10n PATT S4 Mode GND C17 GND GND 7 Y1 8MHz 6 GND 18p C18 GND 23 18p 22 21 C 15 R11 1k5 D7 PATTD X1 D8 PATT D9 STANDBY p R16 680 R17 680 R18 680 n 100n 100n STOP 17 D+ 18 18 18 18 RP2 D- GND 8 EP R7 R8 R9 R10 2 S 4 VSS A1 VCC 7 8 4 GND 5 6 D KGEA-BFCR TC4426ACOA 3 NMOS2 29 6 +12V D 5 6 7 G 3 2 VCC NMOS2 PMOS2 PATT+DATA 4 D4 PMEG4010 VDD U7 3 C 12 RB5 P-MOS S G 5 PGEC1 5 3 D3 PMEG4010 4 4 DISVREG U5 3 S U6 PMOS2 GND U3 PIC27FJ64GB002 VCAP PGED1 10 U4 P-MOS MCLR VBUS R5 10k +12V VUSB GND +12V VDD 20 25 GND VSS J2 100n GND GND GND +3.3V GND Piezo GND +3.3V GND D D Size Project Title A3 125kHz Wakeup Transmitter Board Date 07/02/2013 Originator JRY 1 6.5 2 3 4 5 6 Revision 2.0 Sheet 3 7 of 3 8 125 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 www.ams.com Revision 1.1/ 24/02/13 page 17/20 AS3933-AN01 Demoboard Description 6.6 125 kHz Wake-up Transmitter Board BOM www.ams.com Revision 1.1/ 24/02/13 page 18/20 AS3933-AN01 Demoboard Description 7 Ordering Information Figure 14: Ordering Information 1 Ordering Code Type Marking Delivery Form 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: [email protected] or find your local distributor at http://www.ams.com/distributor www.ams.com Revision 1.1/ 24/02/13 page 19/20 AS3933-AN01 Demoboard Description 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. www.ams.com Revision 1.1/ 24/02/13 page 20/20