TDA1581 View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
TDA1581 Datasheet PDF : 14 Pages
| |||
Philips Semiconductors
Decoder for traffic warning (VWF) radio
transmissions
Preliminary specification
TDA1581T
LIMITING VALUES
In accordance with the Absolute Maximum System (IEC134).
SYMBOL
PARAMETER
CONDITIONS
VP = V7-20
V2; 3-20
I2; 3
V15-20
I15
Ptot
Tstg
Tamb
supply voltage
pin 7
switch output voltage
pins 2 or 3
switch output current
pins 2 or 3
signal input voltage
pin 15
signal input current
pin 15
total power dissipation
storage temperature range
operating ambient temperature range
MIN.
−
−0.5
−10
−0.5
−
−
−55
−30
TYP.
−
−
−
−
−
−
−
−
MAX.
15
15
5
VP
−10
800
+150
+80
UNIT
V
V
mA
V
mA
mW
°C
°C
CHARACTERISTICS
Vp = 8.5 V; Tamb = +25 °C; measured at nominal input signal: ViSK = 8 mV, f = 57 kHz amplitude modulated with
fm = 34.95 Hz and m = 60% for ‘BK-traffic area C’ signal; or with fm = 125 Hz and m = 30% for DK signal.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
VP
supply voltage
IP
supply current
SK amplifier/decoder
pin 7
pin 7
7.5
−
−
6
10
V
15
mA
Zi
Vi(p-p)
ViSK
Gv9-15
∆Gv9-15
∆Gv
Vo9BK
Vo9DK
BK circuit
input impedance
input voltage (peak-to-peak value)
input voltage at start of gain control
voltage gain
gain spread
gain control range
controlled output voltage
f ≤ 57 kHz
Vo9BK = −3 dB
V9BK / V15SK
60
−
−
kΩ
2
−
−
V
−
2.4(1) −
mV
−
44(1)
−
dB
−
−
±2
dB
40
−
−
dB
−
440 −
mV
−
220 −
mV
Vo5BKon
V-V----oo---55--B-B---KK---oo---fn-f
V4-20off
I3
V3-20sat
V3-20
switch-on threshold level
switch hysteresis
pin 3 high-Z
BK switch threshold level for BK-off
(SK-off) (typ. value = 0.21V8-20)
SK output (pin 3)
permitted load current
saturation voltage
rejection voltage
pin 3 conducting
I3 = 1.5 mA
I3 < 5 µA
600 670 750 mV
3
3.5
4
dB
0.8
0.88 0.97 V
−
−
−
−
18
−
0.5
mA
0.35 V
−
V
March 1992
5
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