TDA1579 Philips Semiconductors, TDA1579 Datasheet - Page 9

• Manufacturer Part Number: TDA1579
• Description: Decoder for traffic warning VWF radio transmissions
• Manufacturer: Philips Semiconductors

Philips Semiconductors
FILTER INFORMATION
Gain
Amplifier conditions: G
Recommended components
May 1992
Resonance frequency
Gain at
Quality
C1, C2
and
R1, R2, R3
or
C1, C2
and
R1, R2, R3
G
Decoder for traffic warning (VWF) radio
transmissions
v
=
–
------------------------------------------------------------------------------------------------------------------ -
p
2
=
+
p
r
-------------------------------- -
R3 C1 C2
C1
+
o
C2
>> G
metallized polycarbonate film (MKC) capacitors;
metal film (MR) resistors;
metallized polyester film (MKT) capacitors;
carbon film (CR) resistors;
------------------- -
R1 C1
G
+
v
Q =
vr
p
--------------------------------------------------------- -
R1 R2 R3 C1 C2
r
and G
=
=
---------------------------------------------------------------- -
--------------------- -
C1
--------------------- - R3 C1 C2
R1
o
R1 R2
R1
------------------------
C1
C2
>> 2 Q
GENERAL EQUATION
+
C1 C2
+
C2
+
+
R2
R2
C2
R3
------- -
R1
2
1
R3 R1
------------------------------------- -
2%
2%
R1 R2
, in which p = j and G
+
9
R2
------------------------------------------- -
C
1
-- -
2
1
-- -
2
5%
R3
------- -
R1
--------------------- - R3
R1
R3 R1
------------------------------------- -
R1 R2
C1 = C2 = C
R1 R2
+
5%
1
R2
v
=
+
R2
V
----- -
V
o
i
.
---------------------------- -
C R2 R3
1
-- -
2
1
-- -
2
R3
------- -
R1
R3
------- -
R2
Product specification
1
C1 = C2 = C
TDA1579T
R2 < < R1
TDA1579