AS3930
Single Channel Low Frequency
Wakeup Receiver
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 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 and a
16-LD QFN (4x4) package.
Ordering Information
and
Content Guide
appear at end of
datasheet.
Key Benefits & Features
The benefits and features of AS3930, Single Channel Low
Frequency Wakeup Receiver are listed below:
Figure 1:
Added Value of Using AS3930
Benefits
Enables low power active tags
Selectable carrier frequency
Highly resistant to false wake-ups
Improved immunity to false wake-ups
Allows frequency only detection
Improved range with best-in-class sensitivity
Adjustable range
Provides tracking of false wake-ups
Ensures wake-up in a noise environment
Extended battery life
Flexible clock configuration
Features
Single channel ASK wake-up receiver
Carrier frequency range 110 – 150 kHz
16-bit programmable wake-up pattern
Supporting doubling of wake-up pattern
Wake-up without pattern detection selectable
Wake-up sensitivity 100μVRMS (typ.)
Sensitivity level adjustable
False wake-up counter
Periodical forced wake-up supported (1s – 2h)
Current consumption in listening mode 1.37 μA (typ.)
RTC based 32 kHz XTAL, RC-OSC, or external clock
ams Datasheet
[v1-62] 2014-Nov-27
Page 1
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AS3930 −
General Description
Benefits
Operates from a 3V battery
Industrial temperature range
Features
Operating supply range 2.4V – 3.6V (TA = 25°C)
Operation temperature range -40°C to +85°C
Applications
The AS3930, Single Channel Low Frequency Wakeup Receiver
is ideal for Active RFID tags, real-time location systems, operator
identification, access control, and wireless sensors.
Figure 2:
AS3930 Typical Application Diagram with Crystal Oscillator
VCC
CBAT
CL
VCC
XIN
CS
XTAL
TRANSMITTER
TX
Transmitting Antenna
XOUT
LF1P
NC
NC
LFN
VSS
DAT
WAKE
AS3930
SCL
SDO
SDI
GND
Page 2
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ams Datasheet
[v1-62] 2014-Nov-27
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