參數(shù)資料
型號(hào)： AS3902
廠商： AUSTRIAMICROSYSTEMS AG
元件分類： 通信及網(wǎng)絡(luò)
英文描述： ISM 433 MHz ASK Transmitter
中文描述： SPECIALTY TELECOM CIRCUIT, PDSO8
封裝： MSOP-8
文件頁(yè)數(shù)： 7/14頁(yè)
文件大?。?/td> 348K
代理商： AS3902
ISM 433 MHz ASK Transmitter – Preliminary Data Sheet
AS3902
Rev. A7, December 2000
Page 7 of 14
2.3 ASK Operation
T
AMB
= 23 °C, VDD = 3.0 V, unless specified otherwise.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Note
f
RF
Transmit frequency
(Europe)
f
XTAL
= 13.560 MHz
433,920
MHz
1)
P
OUT
,H
Available output power
In 2 k
, TXD = “H“
0
dB
m
2)
P
OUT
,L
Leakage output power
In 2 k
, TXD = “L“
-inf.
-80
dB
m
P
OUT
3rd
Radiated third harmonic
output power
Antenna attenuation
> 20 dB
-30
dB
C
P
SP
Spurious power
In distance of f
CLK
or
f
XTAL
from carrier.
-25
dB
C
3)
f
CLK
μC clock frequency
3.390
MHz
t
SWM
Minimum switch close
time
1
ms
t
STUP
Start up time
Until clock output
2
ms
t
DRON
Driving amplifier turn on
delay
21
μs
R
ASK
ASK data rate range
For a RF packet duty
cycle
≥
45 %.
0
32
kb/s
4)
t
r,f
Carrier rise / fall time
8
μs
Note:
1)
2)
XTAL tolerances will slightly change the typical transmit frequency.
Output power depends on load impedance, differential output current is typical 0.7 mA
rms
. Maximum differential voltage swing
is typical 4 V
(1.4 V
).
Actual E.I.R.P. depends on antenna efficiency.
Measurement bandwidth (according to EN 300 220-1) see also figure 10. Actual radiated spurious power depends on antenna
efficentcy and antenna selectivity. Measured with loop antenna (demo board).
Guaranteed, higher data rates possible.
3)
4)
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