AS3932 LF Receiver IC

Programmable 3D LF Wake-up Receiver

The AS3932 is a 3-channel ASK receiver that generates a wake-up signal upon detection of a data signal with a carrier frequency in the range of 110 – 150 kHz. It can be used to wake-up active tags in RTLS, PKE and other similar tracking and access control systems.

The integrated correlator can be used for detection of a programmable 16-bit wake-up pattern. The device can operate using one, two, or three active channels.

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The AS3932 calculates a digital RSSI value for each active channel and has a customizable data rate. The AS3932 includes a real-time clock (RTC) that is produced from either a crystal oscillator or the internal RC oscillator. AS3932’s configurable capabilities allow you to optimize its settings for a greater distance while maintaining dependable wake-up generation.

The sensitivity level of AS3932 can be adjusted in presence of a strong field or in noisy environments.

FEATURES

Programmable wake-up pattern
100µV wake-up sensivity
Low power listening mode (1.7µA)
One, two or three channel operation

BENEFITS

Eliminates false wake-up
Provides long range wake-up
Enables long battery life
Works with 3D antenna

AS3932 APPLICATIONS

IoT Devices & Smart Thermostats
Real-Time Location Systems (RTLS)
High-Value Asset Tracking
Container Tracking
Operator Identification
Passive Keyless Entry (PKE)
Wireless Sensors

Product	Part Number	RoHS compl.	PB Free	Package	Packing QTY	Shipping Package
AS3932	AS3932 DEMOBOARD		Y	SYSTEM	1	BOX
AS3932	AS3932-BQFT	Y	Y	QFN16	1000	TAPE & REEL

Channels [#]	3
Wake-up sensitivity [µVpp]	282
LF carrier freq. range [kHz]	110-150
Data rate (manch.) [kb/s]	0.5 – 4
Dynamic range [dB]	64
RSSI step [dB]	2
Package	TSSOP-16, QFN-16
Features	16bit programmable wake-up pattern
Supply voltage [V]	2.4 – 3.6
Current Consumption [(PD/Listening/Active) µA]	0.4/2.7/8.3
Temperature range [°C]	-40 to +85
Interface	Serial Peripheral Interface