ams' AS3930 is a single-channel, low power ASK receiver, which is able to generate a wake up upon detection of a data signal that uses an LF carrier frequency between 110 and 150 kHz. The integrated correlator can be used for detection of a programmable 16-bit wake up pattern.
The AS3930 provides a digital RSSI value, and it supports a programmable data rate and Manchester decoding with clock recovery. The AS3930 offers a real-time clock (RTC), which is derived from either a crystal oscillator or the internal RC oscillator.
The programmable features of AS3930 enable the optimization of its settings for achieving a longer distance while retaining a reliable wake up generation. The sensitivity level of AS3930 can be adjusted in the presence of a strong field or in noisy environments.
View Diagram
| Features and Benefits |
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- Current consumption in listening mode 1.37 µA (typ.)
- Operating supply voltage 2.4 V to 3.6 V (TA = 25°C)
- Data rate adjustable from 0.5 kbps to 4 kbps (Manchester)
- RTC based on 32 kHz XTAL, RC-OSC, or external clock
- Periodical forced wake up supported (1 s to 2 h)
- Manchester decoding with clock recovery
- Bidirectional serial digital interface (SDI)
- Operating temperature range -40°C to +85°C
- Wake up without pattern detection supported
- Dynamic range 64 dB
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- Carrier frequency range 110 to 150 kHz
- Programmable wake up pattern (16-bits)
- Doubling of wake up pattern supported
- Single channel ASK wake up receiver
- Highly resistant to false wake ups
- 5-bit RSSI step (2 dB per step) RoHS compliant
- Adjustable sensitivity level
- Low-power listening modes
- False wake up counter
- Digital RSSI
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| Applications |
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- Active RFID tags
- Real-time location systems
- Operator identification
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- Access control
- Wireless sensors
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