AS3933 datasheet(2/64 Pages) AMSCO

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AS3933

3D Low Frequency Wake-Up Receiver

The AS3933 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 15-150 kHz. The integrated

correlator can be used for detection of a programmable 16-bit

or 32-bit Manchester wake-up pattern. The device can operate

using one, two, or three active channels.

The AS3933 provides a digital RSSI value for each active

channel, it supports a programmable data rate and Manchester

decoding with clock recovery. The AS3933 offers an internal

Clock Generator, which is either derived from a crystal oscillator

or the internal RC oscillator. The user can decide to use the

external clock generator instead.

The programmable features of AS3933 enable to optimize its

settings for achieving a longer distance while retaining a

reliable wake-up generation. The sensitivity level of AS3933 can

be adjusted in presence of a strong field or in noisy

environments.

Antenna tuning is greatly simplified, as the automatic tuning

feature ensures perfect matching to the desired carrier

frequency.

The device is available in 16-pin TSSOP and 16-LD QFN (4x4mm)

packages, and DoW (dice on wafer).

Ordering Information and Content Guide appear at end of

datasheet.

Key Benefits & Features

The benefits and features of AS3933, 3D Low Frequency

Wake-Up Receiver are listed below:

Figure 1:

Added Value of Using AS3933

Benefits

Features

• Enables low power active tags

• 3-channel ASK wake-up receiver

• Selectable carrier frequency

• Carrier frequency range 15 – 150 kHz

• One, two, or three channel operation

• 1-D, 2-D, or 3-D wake-up pattern detection

• Highly resistant to false wake-ups

• 32-bit programmable wake-up pattern

• Improved immunity to false wake-ups

• Supporting doubling of wake-up pattern

• Allows frequency only detection

• Wake-up without pattern detection selectable

• Improved range with best-in-class

sensitivity

• Wake-up sensitivity 80μVRMS (typ.)

General Description

AS3933 Datasheet(PDF) 2 Page - ams AG

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