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AS3932
Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s
Table 5. Electrical System Specifications
Symbol
I3CHOORC
I3CHXT
IDATA
Parameter
Current Consumption in ON/
OFF mode with three active
channels and RC-oscillator as
RTC
Current Consumption in
standard listening mode with
three active channels and
crystal oscillator as RTC
Current Consumption in
Preamble detection / Pattern
correlation / Data receiving
mode (RC-oscillator)
Conditions
11% Duty Cycle
50% Duty Cycle
With 125 kHz carrier frequency and 1kbps
data-rate. No load on the output pins.
Min
Typ
1.7
3.45
6.5
8.3
Max
8.9
12
Units
μA
μA
μA
Input Sensitivity
SENS
Input Sensitivity on all
channels
With 125 kHz carrier frequency, chip in default
mode, 4 half bits burst + 4 symbols preamble
and single preamble detection
100
μVrms
Channel Settling Time
TSAMP
Amplifier settling time
250
μs
Crystal Oscillator
FXTAL
TXTAL
IXTAL
Frequency
Start-up Time
Current consumption
Crystal dependent
Crystal dependent
32.768
1
1
kHz
s
μA
External Clock Source
IEXTCL
Current consumption
1
μA
RC Oscillator
FRCNCAL
FRCCAL32
FRCCALMAX
FRCCALMIN
Frequency
Frequency
Frequency
Frequency
If no calibration is performed
If calibration with 32.768 kHz reference signal
is performed
Maximum achievable frequency after
calibration
Minimum achievable frequency after calibration
27
31
32.768
32.768
35
30
42
34.5
kHz
kHz
kHz
kHz
TCALRC
IRC
Calibration time
Current consumption
200
65
Periods of
reference
clock
nA
www.ams.com/LF-Receiver/AS3932
Revision 1.7
9 - 34
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