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PDF AS3932 Data sheet ( Hoja de datos )
| Número de pieza | AS3932 | |
| Descripción | 3D Low Frequency Wakeup Receiver | |
| Fabricantes | ams | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AS3932 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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AS3932
3D Low Frequency Wakeup Receiver
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 (4×4)
packages.
Ordering Information and Content Guide appear at end of
datasheet.
Figure 1:
Added Value of using AS3932
Key Benefits & Features
The benefits and features of AS3932, 3D Low Frequency Wakeup
Receiver are listed below:
Benefits
Features
Enables low power active tags
3-channel ASK wake-up receiver
Selectable carrier frequency
Carrier frequency range 110 - 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
16-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 100μVRMS (typ.)
Adjustable range
Sensitivity level adjustable
Provides tracking of false wake-ups
False wake-up counter
Ensures wake-up in a noise environment
Periodical forced wake-up supported (1s – 2h)
Extended battery life
Current consumption in 3-channel listening mode 1.7μA (typ.)
ams Datasheet
[v1-82] 2014-Nov-05
Page 1
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1 page  
AS3932 − Pin Assignment
Pin Name
LF3P
LF2P
LF1P
LFN
XIN
XOUT
VSS
WAKE
DAT
NC
Pin
Number
7
8
9
10
11
12
13
14
15
16
Pin Type
Analog I/O
Supply pad
Digital output
-
Description
Input antenna channel three
Input antenna channel two
Input antenna channel one
Common ground for antenna one, two and three
Crystal oscillator input
Crystal oscillator output
Substrate
Wake-up output IRQ
Data output
Not connected
QFN Package
Figure 7:
Pin Assignments 16LD QFN (4×4) Package
16 15 14 13
LF3P 1
12 SCL
LF2P 2
LF1P 3
AS3932
11 CS
10 NC
LFN 4
9 DAT
56 7 8
ams Datasheet
[v1-82] 2014-Nov-05
Page 5
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5 Page 
AS3932 − Typical Operating Characteristics
Typical Operating
Characteristics
Figure 12:
Sensitivity over Voltage and Temperature
120
100
80
60
40
20
0
2.4
95 oC
27 oC
-40 oC
3
Supply Voltage [V]
Figure 13:
Sensitivity over RSSI
3.6
1000000
100000
10000
1000
VIN = 2.4V
VIN = 1.5V
VIN = 1.0V
100
10
1
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
RSSI [dB]
ams Datasheet
[v1-82] 2014-Nov-05
Page 11
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11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AS3932.PDF ] | |
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