AS3932 3D Low Frequency Wakeup Receiver The AS3932 is a 3-channel low power ASK receiver that is able General Description to generate a wake-up upon detection of a data signal which uses a LF carrier frequency between 110 - 150 kHz. The integrated correlator can be used for detection of a programmable 16-bit wake-up pattern. The device can operate using one, two, or three active channels. The AS3932 provides a digital RSSI value for each active channel, it supports a programmable data rate. The AS3932 offers a real-time clock (RTC), which is either derived from a crystal oscillator or the internal RC oscillator. The programmable features of AS3932 enable to optimize its settings for achieving a longer distance while retaining a reliable wake-up generation. The sensitivity level of AS3932 can be adjusted in presence of a strong field or in noisy environments. The device is available in 16-pin TSSOP and 16LD QFN (44) packages. Ordering Information and Content Guide appear at end of datasheet. Key Benefits & Features The benefits and features of AS3932, 3D Low Frequency Wakeup Receiver are listed below: Figure 1: Added Value of Using AS3932 Benefits Features Enables low power active tags 3-channel ASK wake-up receiver Selectable carrier frequency Carrier frequency range 110 - 150 kHz One, two, or three channel operation 1-D, 2-D, or 3-D wake-up pattern detection Highly resistant to false wake-ups 16-bit programmable wake-up pattern Improved immunity to false wake-ups Supporting doubling of wake-up pattern Allows frequency only detection Wake-up without pattern detection selectable Improved range with best-in-class sensitivity Wake-up sensitivity 100VRMS (typ.) Adjustable range Sensitivity level adjustable Provides tracking of false wake-ups False wake-up counter Ensures wake-up in a noise environment Periodical forced wake-up supported (1s 2h) Extended battery life Current consumption in 3-channel listening mode 1.7A (typ.) ams Datasheet Page 1 v1-83 2015-Mar-02 Document FeedbackAS39 32 Gene ral Des c rip t ion Benefits Features Flexible clock configuration RTC based 32 kHz XTAL, RC-OSC, or external clock Operates from a 3V battery Operating supply range 2.4V 3.6V (TA = 25C) Industrial temperature range Operation temperature range -40C to +85C Applications The AS3932 is ideal for: Active RFID tags, Real-time location systems, Operator identification, Access control, and Wireless sensors. Figure 2: AS3932 Typical Application Diagram with Crystal Oscillator VCC VCC CS CL CBAT XIN NC XTAL TRANSMITTER XOUT DAT TX LF1P WAKE AS3932 LF2P SCL LF3P SDO LFN SDI VSS GND Page 2 ams Datasheet Document Feedback v1-83 2015-Mar-02 Transmitting Antenna X, Y, and Z Receiving Antennas