AS3930 Low Frequency Wakeup Receiver IC
Low Frequency Wakeup Receiver IC
Description
The AS3930 is a single-channel low power ASK receiver that is able to generate a wakeup 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 wakeup pattern.
The AS3930 provides a digital RSSI value, it supports a programmable data rate and Manchester decoding with clock recovery. The AS3930 offers a real-time clock (RTC), which is either derived from a crystal oscillator or the internal RC oscillator.
The programmable features of AS3930 enable to optimize its settings for achieving a longer distance while retaining a reliable wakeup generation. The sensitivity level of AS3930 can be adjusted in presence of a strong field or in noisy environments.
The device is available in 16 pin TSSOP and QFN 4x4 16 LD packages.
Key Features
- Single channel ASK wakeup receiver
- Carrier frequency range 110 - 150 kHz
- Programmable wakeup pattern (16bits)
- Doubling of wakeup pattern supported
- Wakeup without pattern detection supported
- Wakeup sensitivity 100μVRMS (typ.)
- Adjustable sensitivity level
- Highly resistant to false wakeups
- False wakeup counter
- Periodical forced wakeup supported (1s – 2h)
- Low power listening modes
- Current consumption in listening mode 1.37 μA (typ.)
- Data rate adjustable from 0.5 - 4 kbps (Manchester)
- Manchester decoding with clock recovery
- Digital RSSI
- Dynamic range 64dB
- 5 bit RSSI step (2dB per step)
- RTC based on 32kHz XTAL, RC-OSC, or external clock
- Operating temperature range -40 to +85ºC
- Operating supply voltage 2.4 - 3.6V (TA = 25ºC)
- Bidirectional serial digital interface (SDI)
Applications
The AS3930 is ideal for Active RFID tags, real-time location systems, operator identification, access control, and wireless sensors.
