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PDF TDA1581T Data sheet ( Hoja de datos )
| Número de pieza | TDA1581T | |
| Descripción | Decoder for traffic warning VWF radio transmissions | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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INTEGRATED CIRCUITS
DATA SHEET
TDA1581T
Decoder for traffic warning (VWF)
radio transmissions
Preliminary specification
File under Integrated Circuits, IC01
March 1992
1 page  
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
5 Page 
Philips Semiconductors
Decoder for traffic warning (VWF) radio
transmissions
Preliminary specification
TDA1581T
FILTER INFORMATION
Gain
Amplifier conditions: Go >> Gv and Go >> 2 × Q2
Gv= – p----2----+-----p-----×-----R---------3------C----×----1------C----+------1----C----×------2----C--------R----2--------1----+------p×-----R---------C----1----------1----×----------R----------2----R-----×-----1----R-----+-----3-----R-----×----2-----C---------1----------×----------C---------2------ , in whichp = jω and Gv= V-V----o-i
GENERAL EQUATION
C1 = C2 = C
resonance frequency
ωr =
gain at ω = ωr
−Gvr =
quality
Q=
----------------------------------1-----------------------------------
R-R----11-----+×-----RR-----22-- × R3 × C1 × C2
C-----1---C--+--2---C-----2-- × RR-----31--
C-C----11-----+×-----CC-----22-- × -R----3---R--(---R1----1-×----+-R----R2-----2---)--
----------------------1-----------------------
C R-R----11-----+×-----RR-----22-- × R3
12-- × RR-----31--
12-- -R----3---R--(---R1----1-×----+-R----R2-----2---)--
C1 = C2 = C
R2 << R1
--------------1----------------
C R2 × R3
12-- × RR-----31--
12-- × RR-----32--
Recommended components
C1, C2
and
R1, R2, R3
or
C1, C2
and
R1, R2, R3
metallized polycarbonate film (MKC) capacitors; ±5%
metal film (MR) resistors; ±2%
metallized polyester film (MKT) capacitors; ±5%
carbon film (CR) resistors; ±2%
March 1992
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet TDA1581T.PDF ] | |
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