New Product Introduction

ScioSense AS3933 LF receiver IC

The AS3933 is a three-channel ASK receiver that generates a wake-up signal upon detecting data signal with a carrier frequency in the range from 15 to 150 kHz

ScioSense AS3933 LF Receiver IC  product image

The AS3933 is a three-channel ASK receiver that generates a wake-up signal upon detecting data signal with a carrier frequency in the range from 15 to 150 kHz. The programmable features of AS3933 allow optimizing its settings to achieve a longer distance while retaining a reliable signal detection. The adjustable sensitivity level enables reliable detection even in noisy environments, while the automatic antenna tuning feature ensures perfect matching to the desired carrier frequency. The AS3933 can wake up active tags in RTLS, PKE, and other similar tracking and access control systems.

 

Key features

  • Reliable wake-up pattern detection
  • Wake-up sensitivity 80 µVRMS (typ.)
  • Low power listening mode (2.3 µA)
  • One, two, or three-channel operation (works with 3-D antenna)

 

Additional features

  • Programmable wake-up pattern (16-bit or 32-bit Manchester)
  • Wakeup without pattern detection supported:
    • Periodical forced wakeup (1 s to 2 h)
  • Adjustable data rate:
    • 0.5 to 4 kbps (Manchester)
  • Adjustable sensitivity level
  • Enables longer battery life:
    • Consumption in 3-channel listening mode: 1.7 µA (typ.)
  • Bidirectional SPI interface
  • Highly resistant to false wake-ups
  • Easy antenna tuning for perfect CF matching
  • Self-calibration of the internal RC-oscillator
  • False wakeup counter
  • Long-range wake-up event detection
  • Manchester decoding with clock recovery
  • Digital RSSI values available for each channel
  • Dynamic range: 64 dB
  • 5-bit RSSI step (2 dB per step)
  • Clock generator based on 32 kHz XTAL, RC-OSC, or external clock
  • Operating temperature range -40 to +85 ºC
  • Package option: 16 pin TSSOP, QFN 4x4

 

Applications

  • Asset tracking in harsh conditions
  • ID systems (operator, access control)
  • Wireless sensors
  • Real-time location systems
  • Active RFID tags

 

Available tools

Demo Kit for AS3933:

The AS3933 Demo Board demonstrates the main features of the AS3933. These include 3D wake-up pattern detection, readout of false wake-ups, the possibility to measure current consumption in different operating modes, and measurement access to SPI communication and data output. The influence different settings have on the detection efficiency can be observed right away by using the 125 kHz wake-up transmitter board.

Kit Content:

  • 1x AS3933 Demo Board
  • 1x 125kHz wake-up transmitter board
  • 1x 9V power supply
  • 2x CR2032 coin cell
  • 1x USB stick
  • 1x USB cable

ScioSense AS3933 LF Receiver IC | EBV Elektronik

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Related parts

  • AS3933-BQFT
  • AS3933-BTST


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