U3661M TEMIC [TEMIC Semiconductors], U3661M Datasheet

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U3661M

Manufacturer Part Number
U3661M
Description
Baseband Delay Line
Manufacturer
TEMIC [TEMIC Semiconductors]
Datasheet

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TELEFUNKEN Semiconductors
Rev. A1, 17-Jul-96
Baseband Delay Line (64
Application
In TV sets, the integrated baseband delay line circuit is suitable for decoders with color-difference signal outputs
Description
The integrated delay line circuit U3661M is suitable for
all chroma decoders with baseband color-difference
outputs. It is suitable for PAL-, SECAM- and
NTSC-signals as well. The U3661M contains two
separate delay lines for processing (R–Y)-output and
(B–Y)-output separately. The delay is performed by
internally switched capacitors. On-chip postfiltering
avoids the need for external filter components.
Features
D
D
D
D
One line delay time, addition of delayed and
non-delayed output signals
Adjustment-free application, VCO without
external components
Handles negative or positive color-difference
input signals
Clamping of ac-coupled input signals
[ (R–Y) and (B–Y)]
"
"
GND2
V
(B–Y)
(R–Y)
DD2
16
14
1
3
SC pulse
Clamping
Clamping
5
Bias
SC detector
Preliminary Information
Line memory
Shift register
Line memory
Figure 1. Block diagram
f
m
SC
PLL
s)
V
V
Ref
Ref
A summing circuitry combines the information of
adjacent TV-lines, thus giving an interpolated sum for the
PAL-system, storing preceeding lines for the SECAM-
system and providing a comb-filtered output for
NTSC-signals. Due to internally-generated timing,
synchronization is easily done by feeding a line-frequent
impulse (usually the SC-impulse) to the sync-input of
the IC.
D
D
D
D
Line-locked by the sandcastle pulse
No crosstalk between SECAM color
carriers (diaphoty)
Comb filtering functions for NTSC
color-difference signals
Correction of phase errors in the PAL system
Control
S+H
S+H
LPF
LPF
Clock generator
+
+
3 MHz
94 8846
U3661M
12
10
11
9
"
V
"
GND1
(B–Y)
(R–Y)
DD1
1 (9)

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U3661M Summary of contents

Page 1

... Application In TV sets, the integrated baseband delay line circuit is suitable for decoders with color-difference signal outputs Description The integrated delay line circuit U3661M is suitable for all chroma decoders with baseband color-difference outputs suitable for PAL-, SECAM- and NTSC-signals as well. The U3661M contains two separate delay lines for processing (R– ...

Page 2

... U3661M Ordering Information Extended Type Number U3661M-ADP U3661M-AFP Pin Description 1 V DD2 2 NC GND2 10649 Figure 2. Connection diagram Absolute Maximum Ratings Reference point Pin 3, 10, unless otherwise specified Parameters Supply voltage (Pin 9) Supply voltage (Pin 1) ...

Page 3

... (n) V (n+1) W < 300 V gen noise t 63. =22 pF, Pin 11, 12 load pF, Pin 11, 12 load Pin slice U3661M Min. Typ. Max. Unit 4.5 5.0 5.5 V 4.5 5.0 5.5 V 3.5 8 0.525 1.0 V 0.665 1.0 V 1.05 2.0 V 1.33 2 ...

Page 4

... U3661M SC-impulse Internal clamping 95 10355 BGP (9) Preliminary Information BGP H-pulse m 0 1.6 s Figure 3. Timing of internal clamping Figure 4. Restrictions to SC Pulse No higher than least 1 10226 TELEFUNKEN Semiconductors Rev. A1, 17-Jul-96 ...

Page 5

... 2,4,6,7,8,13,15 16 Baseband delay line Figure 5. Typical application circuit Baseband delay line SC-impulse 10227 Figure 7. Application with 5 V SC-pulse U3661M NC 94 8848 " (R–Y) 11 " (B– Baseband delay line 10354 5 (9) ...

Page 6

... U3661M Internal Pin Circuits 14,16 Figure 8. Color-difference signal inputs 95 10359 Figure 9. Color-difference signal outputs 6 (9) Preliminary Information 5 95 10356 Figure 10. Sandcastle-pulse input 11,12 1,9 Figure 11. Supply voltage V 95 10357 95 10358 , V DD2 DD1 TELEFUNKEN Semiconductors Rev. A1, 17-Jul-96 ...

Page 7

... TELEFUNKEN Semiconductors Rev. A1, 17-Jul-96 Preliminary Information 20.0 max 19.8 max 4.8 max 0.5 min 0.58 2.54 0.48 17. 20.57 18.92 3.81 3.05 3.81 3.05 0.81 2.79 2.29 U3661M 7.82 7.42 6.4 max 3.3 0.39 max 9.75 8.15 technical drawings technical drawings technical drawings according to DIN according to DIN according to DIN specifications specifications specifications 96 11709 7.87 7.37 0.76 0.13 0.89 0.38 6.60 6.10 0.38 0.20 9.40 7.62 technical drawings technical drawings technical drawings according to DIN ...

Page 8

... U3661M Package Information Package SO16 Dimensions (9) Preliminary Information 94 8875 TELEFUNKEN Semiconductors Rev. A1, 17-Jul-96 ...

Page 9

... TEMIC against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone 7131 67 2831, Fax number 7131 67 2423 TELEFUNKEN Semiconductors Rev. A1, 17-Jul-96 Preliminary Information unauthorized use. U3661M 9 (9) ...

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