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SI4022 датащи(PDF) 5 Page - Silicon Laboratories

номер детали SI4022
подробное описание детали  Programmable output power level
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производитель  SILABS [Silicon Laboratories]
домашняя страница  http://www.silabs.com
Logo SILABS - Silicon Laboratories

SI4022 датащи(HTML) 5 Page - Silicon Laboratories

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Si4022
 
 
 
DC Characteristics (continued)
Symbol
Parameter
Conditions/Notes
Min
Typ
Max
Units
Vil
Digital input low level
  
 
0.3*Vdd
V
Vih
Digital input high level
 
0.7*Vdd
  
V
Iil
Digital input current
Vil = 0 V
-1
 
1
µA
Iih
Digital input current
Vih = Vdd, Vdd = 3.8 V
-1
 
1
µA
Vol
Digital output low level
Iol = 2 mA
  
0.4
V
Voh
Digital output high level
Ioh = -2 mA
Vdd-0.4
  
V
AC Characteristics
Symbol
Parameter
Conditions/Notes
Min
Typ
Max
Units
fLO
Transmitter frequency
868 MHz band, 20 kHz resolution
915 MHz band, 20 kHz resolution
801.92
881.92
 
878.06
958.06
MHz
fref
PLL reference frequency
(Note 1)
9
10
11
MHz
fres
PLL frequency resolution
  
20
 
kHz
tlock
PLL lock time
Frequency error < 1kHz
after 1 MHz step
 
30
 
μs
tsp
PLL startup time
Initial calibration after power-up
with running crystal oscillator
  
500
μs
Cxl
Crystal load capacitance,
see crystal selection guide
Programmable in 0.5 pF steps,
tolerance +/- 10%
8.5
 
16
pF
tPOR
Internal POR pulse width
(Note 2)
After Vdd has reached 90% of
final value
 
50
100
ms
tsx
Crystal oscillator startup time
Crystal ESR < 100

 
2
5
ms
tPBt
Wake-up timer clock period
Calibrated every 40 seconds
(Note 3)
0.995
1
1.005
ms
twake-up
Programmable wake-up time
 
1
 
8.4*10
6
ms
Note 1: Using anything but a 10 MHz crystal is allowed but not recommended because all crystal-referred timing and frequency
parameters will change accordingly.
Note 2: No command are accepted by the chip during this period.
Note 3: Autocalibration can be turned off.


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