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TDA4454 데이터 시트보기 (PDF) - Temic Semiconductors

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TDA4454 Datasheet PDF : 11 Pages
1 2 3 4 5 6 7 8 9 10
TDA4454
TELEFUNKEN Semiconductors
Block Diagram
Loop filter
12
16
IF input
1
Lock Video
detector
4
Tuner AGC
2
Tuner AGC
take over
11
8
VCO Tank
9
10 Standard switch
VCO
9°
0°
B/G
L
D2MAC
RO
Overload
detector
+/ –
B/G
D2MAC
L
5
4
IF AGC
15
7
Average
( only L, D2MAC )
93 7633
=+
Interference
rejection
6
Video
output
14
+ VS
13 Int. Ref
Pin Description
Pin
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 1, 16
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 2
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 3
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 4, 15
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 5
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 6
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 7
Symbol
Function
IF input
Tuner AGC adjustment
(turn over point)
Delayed tuner AGC current
Ground
IF AGC time constant
Video output
Video averaging for standard L
and D2MAC
Pin Symbol
Function
8, 9
VCO circuit
10
Standard switch
11
PLL loop filter
12
PLL time constant switch
13
Reference voltage
14
Supply voltage
2 (11)
Preliminary Information
Rev. A1: 04.05.1995

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