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
Wake-up sensitivity 100µVRMS (typ.)
Adjustable sensitivity level
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 wakeup pattern.
Highly resistant to false wake-ups
False wake-up counter
Periodical forced wake-up supported (1s – 2h)
Low power listening modes
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.
Current consumption in listening mode 1.37µA (typ.)
Programmable data-rate 0.5-4 kbaud (Manchester encoded)
Digital RSSI
The programmable features of AS3930 enable to optimize its
settings for achieving a longer distance while retaining a reliable
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.
Dynamic range 64dB
5-bit RSSI step (2dB per step)
RTC based on 32kHz XTAL, RC-OSC, or external
clock
Operating temperature range -40ºC to +85ºC
2 Key Features
Operating supply voltage 2.4 - 3.6V (TA = 25ºC)
Single channel ASK wake-up receiver
Bi-directional serial digital interface (SDI)
Carrier frequency range 110 - 150 kHz
Package options: 16-pin TSSOP and QFN 4x4 16 LD
Programmable wake-up pattern (16bits)
3 Applications
Doubling of wake-up pattern supported
The AS3930 is ideal for Active RFID tags, real-time location
systems, operator identification, access control, and wireless
sensors.
Wake-up without pattern detection supported
Figure 1. AS3930 Typical Application Diagram with Crystal Oscillator
VCC
CL
CBAT
VCC
CS
XIN
TRANSMITTER
TX
Transmitting Antenna
XTAL
XOUT
DAT
LF1P
NC
WAKE
AS3930
SCL
SDI
VSS
Revision 1.5
SDO
LFN
www.ams.com/LF-Receiver/AS3930
NC
GND
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