AS3933 SCIOSENSE | Alldatasheet
Document overview
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- PDF pages: 7
Technical content
This product, formerly sold by ams AG, and before that optionally by either Applied Sensors GmbH, acam-messelectronic GmbH or Cambridge CMOS Sensors, is now owned and sold by ScioSense The technical content of this document under ams / Applied Sensors / acam- messelectronic / Cambridge CMOS Sensors is still valid. Contact information Headquarters: Sciosense B.V. High Tech Campus 10
5656 AE Eindhoven
info@sciosense.com www.sciosense.com
© ams AG 2015 Page 1
- Active RFID tags
- Container tracking
- Real-time location systems in buildings
- Persons
- Valuable goods/equipment
- Operator identification
- Industrial machines
- Various vehicles
- Computers
- Access control
- Hospitals
- handicapped
- Elderly
- Wireless sensor networks
- Outdoor monitoring
- Machine monitoring
- Health monitoring LF Wakeup Receiver Markets & Applications
© ams AG 2015 Page 2 LF Wakeup Receiver Overview Device Sensitivit y Frequency Range Correlation Bits Receiver Inputs Antenna Tuning Average Current Consumption AS3930 100µVRMS 100 – 150 kHz 16 bit 1D No 2.7 µA AS3932 100µVRMS 100 – 150 kHz 16 bit 3D No 2.7 µA AS3933 80µVRMS 15 – 150 kHz 32 bit 3D Yes 2.7 µA
- Best-in-class sensitivity
- Lowest power consumptions
- Widest frequency range
© ams AG 2015 Page 3 LF Wakeup Receiver Typical system with wakeup Active Tag with AS3933 Host system and active tag with LF wakeup UHF Transceiver with LF Wakeup Transmitter Typical system with LF wakeup
- The host system with a transceiver (typically UHF) includes a LF wakeup transmitter
- The active tag includes the AS3933 wakeup receiver
- Typical wakeup range is up to 10 meters
- LF wakeup frequency is programmable from 15 kHz to 150 kHz Magnetic Coupling LF signal with wakeup pattern
© ams AG 2015 Page 4 LF Wakeup Receiver Typical active tag AS3933 Wakeup Receiver D A N T E N N A Host MCU SPI Active Tag 15 … 150 kHz UHF Transceiver Typical active tag
- Main function is to wake up the host system
- The LF antenna coils consist of 3 axis (x/y/z)
- AS3933 provides automatic antenna tuning
© ams AG 2015 Page 5
- Automatic antenna tuning
- Best performance of the solution
- Simplifies antenna matching network
- Best sensitivity in the industry
- Maximum communication range
- Allows usage of cheaper antenna coils
- Widest frequency range
- More flexibility
- Allows usage of LF frequency outside the conventional range (125 and 134 kHz)
- Less disturbers
- 32-bit pattern detection
- Very resistant to false wakeup events
- Reduces overall power consumption of the system LF Wakeup Receiver Key Features & Benefits TX RXH
AS3933 – LF Wakeup Receiver Benefits
- Wide frequency range allows for customization
- High sensitivity = longer range, cheaper coils
- Automatic antenna tuning alleviates miss- tuning
- Low power consumption = extended battery life
- Programmable capabilities = system flexibility Key features
- 1, 2 or 3-channal ASK wake-up Rx
- Frequency range: 15-150 kHz
- Best in class wakeup sensitivity: 80µVRMS
- Automatic antenna tuning
- Low current consumption: 2.7 µA
- 16- or 32-bit correlation
- TSSOP16 & QFN16
Applications
- Active RFID tags
- Real-time location systems
- Wireless sensors
- ID systems (operator, access control)
- Asset tracking in harsh & wet applications Wakeup Main Logic Envelope Detector / Data Slicer Correlator I/V Bias Xtal RTC Xin RC RTC Manchester Decoder SPIChannel Amplifier 1 Channel Amplifier 2 Channel Amplifier 3 RSSI RSSI RSSI Data Data Data IRQ XoutGNDVCC LF1P LF2P LF3P SCL SDI SDO LFN DAT CS CL_DAT Channel Selector Freq. OK Freq. OK Freq. OK Tuning Capacitors Tuning Capacitors Tuning Capacitors LC-Oscillator