AS3930_07 Datasheet, PDF (1/32 Pages) ams AG – Single Channel Low Frequency Wakeup Receiver

AS3930
Single Channel Low Frequency Wakeup Receiver
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 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.
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
Figure 1. AS3930 Typical Application Diagram with Crystal Oscillator
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
5-bit RSSI step (2dB per step)
RTC based on 32kHz XTAL, RC-OSC, or external clock
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.
VCC
TRANSMITTER
TX
CBAT
CL
XTAL
VCC
CS
XIN
XOUT
LF1P
NC
DAT
WAKE
AS3930
SCL
NC
SDO
LFN
SDI
VSS
GND
www.ams.com/LF-Receiver/AS3930
Revision 1.5
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