AS3932_07 Datasheet, PDF(1/34 Page) ams AG – 3D Low Frequency Wakeup Receiver

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AS3932_07 Datasheet, PDF (1/34 Pages) ams AG – 3D Low Frequency Wakeup Receiver

AS3932

3D Low Frequency Wakeup Receiver

1 General Description

The AS3932 is a 3-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 device can operate using one, two, or three active channels.

The AS3932 provides a digital RSSI value for each active channel, it

supports a programmable data rate. The AS3932 offers a real-time

clock (RTC), which is either derived from a crystal oscillator or the

internal RC oscillator.

The programmable features of AS3932 enable to optimize its

settings for achieving a longer distance while retaining a reliable

wake-up generation. The sensitivity level of AS3932 can be adjusted

in presence of a strong field or in noisy environments.

The device is available in 16-pin TSSOP and 16LD QFN (4x4)

packages.

2 Key Features

ï®ï 3-channel ASK wake-up receiver

ï®ï Carrier frequency range 110 - 150 kHz

ï®ï One, two, or three channel operation

ï®ï Reliable 1-D, 2-D or 3-D wake-up pattern detection

ï®ï Programmable wake-up pattern (16bits)

ï®ï Doubling of wake-up pattern supported

ï®ï Wake-up without pattern detection supported

ï®ï Wake-up sensitivity 100 ÂµVRMS (typ.)

ï®ï Adjustable sensitivity level

ï®ï Highly resistant to false wake-ups

ï®ï False wake-up counter

ï®ï Periodical forced wake-up supported (1s â 2h)

ï®ï Low power listening modes

ï®ï Current consumption in 3-channel listening mode 1.7 ÂµA (typ.)

ï®ï Programmable data-rate 0.5 â 4 kbaud (Manchester encoded)

ï®ï Digital RSSI values available for each channel

ï®ï Dynamic range 64dB

ï®ï 5 bit RSSI step (2dB per step)

ï®ï RTC based on 32kHz XTAL, RC-OSC, or External Clock

ï®ï Operating temperature range -40ÂºC to +85ÂºC

ï®ï Operating supply voltage 2.4V â 3.6V (TA = 25ÂºC)

ï®ï Bidirectional serial digital interface (SDI)

ï®ï Package option: 16-pin TSSOP, 16LD QFN (4x4)

3 Applications

The AS3932 is ideal for Active RFID tags, Real-time location

systems, Operator identification, Access control, and Wireless

sensors.

www.ams.com/LF-Receiver/AS3932

Revision 1.7

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