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AS3930
S i n g l e C h a n n e l L o w F r e q u e n c y Wa k e u p R e c e i v e r
1 General Description
The AS3930 is a single-channel low power ASK receiver that is able
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 AS3930 provides a digital RSSI value, it supports a
programmable data rate. 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
?? Wake-up sensitivity 100μVRMS (typ.)
?? Adjustable sensitivity level
?? Highly resistant to false wake-ups
?? False wake-up counter
?? Periodical forced wake-up supported (1s – 2h)
?? Low power listening modes
?? Current consumption in listening mode 1.37μA (typ.)
?? Programmable data-rate 0.5-4 kbaud (Manchester encoded)
?? Digital RSSI
?? Dynamic range 64dB
wake-up generation. The sensitivity level of AS3930 can be adjusted
in presence of a strong field or in noisy environments. The device is
available in a 16-pin TSSOP package.
?? 5-bit RSSI step (2dB per step)
?? RTC based on 32kHz XTAL, RC-OSC, or external
clock
2 Key Features
?? Single channel ASK wake-up receiver
?? Carrier frequency range 110 - 150 kHz
?? Programmable wake-up pattern (16bits)
?? Doubling of wake-up pattern supported
?? Wake-up without pattern detection supported
?? Operating temperature range -40oC to +85oC
?? Operating supply voltage 2.4 - 3.6V (TA = 25oC)
?? Bi-directional serial digital interface (SDI)
?? Package options: 16-pin TSSOP and QFN 4x4 16 LD
3 Applications
The AS3930 is ideal for Active RFID tags, real-time location
systems, operator identification, access control, and wireless
sensors.
Figure 1. AS3930 Typical Application Diagram with Crystal Oscillator
VCC
CBAT
CL
VCC
CS
XIN
TRANSMITTER
XTAL
XOUT
LF1P
DAT
WAKE
TX
www.ams.com/LF-Receiver/AS3930
Revision 1.5
NC
NC
LFN
VSS
AS3930
SCL
SDO
SDI
GND
1 - 32
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