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參數(shù)資料
| 型號： | TDA1581 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Decoder for traffic warning VWF radio transmissions |
| 中文描述： | 解碼器交通血友病無線電傳輸警告 |
| 文件頁數(shù)： | 2/14頁 |
| 文件大?。?/td> | 115K |
| 代理商： | TDA1581 |
March 1992
2
Philips Semiconductors
Preliminary specification
Decoder for traffic warning (VWF) radio
transmissions
TDA1581T
FEATURES
Selective subcarrier amplifier (57 kHz) with gain control
Transmitter identification signal (SK) decoder
Area identification signal (BK) and announcement
identification signal (DK) active filtering
BK and DK decoders (Schmitt trigger with switched
hysteresis)
BK and DK switch-on/switch-off delay circuits
SK and BK control outputs.
GENERAL DESCRIPTION
The TDA1581T decoder is for radio transmissions having
57 kHz amplitude-modulated subcarriers as used in the
german ‘Verkehrs Warnfunk’ (VWF) traffic warning
system.
QUICK REFERENCE DATA
Measured in Fig.3 at V
iSK
= 8 mV; f = 57 kHz amplitude modulated with f
m
= 34.95 Hz and m = 60% for ‘BK-traffic area
C’ signal; or with f
m
= 125 Hz and m = 30% for DK signal
ORDERING INFORMATION
Note
1.
SOT163-1; 1996 August 28.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
P
I
P
V
iSK
Z
i
V
iSK
V
i(p-p)
m
BKon
m
BK
t
dSKon
t
dSKoff
m
DKon
m
DK
t
dDKon
t
dDKoff
T
amb
supply voltage range
supply current
nominal input voltage
input impedance
control level
input voltage peak-to-peak value
SK switch-on threshold level
SK switch hysteresis
SK switch-on delay
SK switch-off delay
DK switch-on threshold level
DK switch hysteresis
DK switch-on delay
DK switch-off delay
operating ambient temperature range
7.5
100
2
30
8.5
6
8
2.4
42
3.5
150
750
13
3.6
750
750
10
+80
V
mA
mV
k
mV
V
%
dB
ms
ms
%
dB
ms
ms
°
C
f = 57 kHz
f
≤
57 kHz
3 dB
EXTENDED
TYPE NUMBER
PACKAGE
PINS
PIN POSITION
MATERIAL
CODE
TDA1581T
20
SO
plastic
SOT163A
(1)
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