AS3930-BQFT austriamicrosystems, AS3930-BQFT Datasheet - Page 11

• Manufacturer Part Number: AS3930-BQFT
• Description: IC RF PROGRAM RECEIVER 16-QFN
• Manufacturer: austriamicrosystems

Specifications of AS3930-BQFT

• Rf Type: Read / Write
• Frequency: 110kHz ~ 150kHz
• Features: RSSI Equipped
• Package / Case: 16-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: AS3930-BQFTTR

AS3930
Data Sheet - D e t a i l e d D e s c r i p t i o n
8 Detailed Description
The AS3930 is a one-dimensional low power low-frequency wakeup receiver. The AS3930 is capable to detect the presence of an inductive
coupled carrier and extract the envelope of the On-Off-Keying (OOK) modulated carrier. In case the carrier is Manchester coded the clock is
recovered from the transmitted signal and the data can be correlated with a programmed pattern. If the detected pattern corresponds to the
stored one, a wake-up signal (IRQ) is risen up. The pattern correlation can be bypassed in case and the wake-up detection is based only on the
frequency detection.
The AS3930 is made up of a single receiving channel, one envelop detector, one data correlator, one Manchester decoder, 8 programmable
registers with the main logic and a real time clock.
The digital logic can be accessed by an SDI. The real time clock can be based on a crystal oscillator or on an internal RC. In case internal RC is
used to improve its accuracy a calibration can be performed.
8.1 Block Diagram
Figure 10. Block Diagram
www.austriamicrosystems.com/AS3930
LF1P
LFN
VCC
AS3930
RSSI
Channel
Amplifier
Bias
GND
I/V
Wakeup
Envelope Detector /
Manchester
Logic
Data Slicer
Main
Decoder
Revision 1.0
X
IN
Xtal RTC
X
OUT
SDI
Correlator
RC RTC
IRQ
SCL
SDI
SDO
CS
DAT
CL_DAT
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