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AS3933 LF Receiver IC

Programmable 3D LF wake-up receiver


  • Reliable wake-up pattern
  • 80µV wake-up sensivity
  • Low power listening mode (2.3µA)
  • One-, two- or three-channel operation


  • Eliminates false wake-up
  • Provides long range wake-up
  • Enables long battery life
  • Works with 3D antenna

Product parameters

Channels [#] 3
Wake-Up Sensitivity [µVpp] 225
LF Carrier Freq. Range [kHz] 15 - 150
Data Rate (Manch.) [kbit/s] 0.5 - 4
Dynamic Range [dB] 64
RSSI Step [dB] 2
Package TSSOP16 \ QFN-16 (4x4)
Features 32bit programmable wake-up pattern
Supply [V] 2.4-3.6V
Current Consumption [(PD/Listening/Active) µA] -/2.3/8.3
Interface Serial Peripheral Interface
Temperature Range [°C] -40 to +85

General Description

The AS3933 is a 3-channel ASK receiver that generates a wake-up signal upon detection of a data signal with a carrier frequency in the range of 15-150 kHz. It can be used to wake-up active tags in RTLS, PKE and other similar tracking and access control systems.

This product suits for the following applications:

  • Active RFID tags
  • Real-time location systems (RTLS)
  • Operator identification
  • Passive keyless entry (PKE)
  • Wireless sensors


Title Category Headline Buy
AS3933DemoKit Application Board Demo Kit for AS3933


Type Description Language
Software Eval SW 3.0.2 English
Software Eval SW 3-0-2-0 English

Technical Documents

Type Description Language
Application Note RSSI to voltage English
Application Note WAKE timing English
Application Note Design guide English
Application Note Demodulator / Data slicer English
Application Note Frequency detection range English
Application Note Non-univocal pattern detection (v1-04) English
Block Diagram AS3933 Block Diagram English
Datasheet Document version 1-08 English
Other Product Document LF wakeup Rx English
Other Product Document AS3933DemoKit Image English
User Guide Standard board DK - Dev System English

Environmental Documents

Type Description Language
RoHS Certificate RoHS Certificate AS3933 English

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