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May 1999
CT T ODU MEN E PR PLACE -7747 T 2 OLE RE 0-44 OBS ENDED 1-80 .com MM ications arris l ECO h NO R ntral App entapp@ c TV Sync/AGC/Horizontal Ce : Call or email
CA3154
Signal Processor
[ /Title (CA31 54) /Subject (TV Sync/A GC/Ho rizontal Signal Processor) /Autho r () /Keywords (Harris Semiconductor, TV sync processor, horizontal oscillator, horizontal processor, sync separator, AFC circuit, AGC cir-
Features
* Horizontal Oscillator with AFC * Sync Separator with Noise Immunity * Strobed AGC System * lF AGC Output * Delayed Outputs for Forward or Reverse AGC Tuners * Internal Noise Threshold * High-Impedance Video Input * Choice of Dual External Time Constants for Sync Separator Noise Immunity * RF AGC Delay Externally Controlled * Output Short-Circuit Protection
Description
The CA3154 is a monolithic integrated circuit TV signal processor designed for use in color or monochrome receivers. Circuit functions include a horizontal oscillator with AFC, a sync separator, and a keyed AGC system. The AGC system provides output signals for IF (reverse) and tuner (forward and/or reverse). The wide frequency-range horizontal oscillator has high stability at 503.5kHz. When the CA3154 is used in conjunction with horizontal/vertical countdown circuits, the need for horizontal and vertical hold controls is eliminated.
Part Number Information
PART NUMBER CA3154E TEMP. RANGE (oC) -40 to 85 PACKAGE 16 Ld PDIP PKG. NO. E16.3
Pinout
CA3154 (PDIP) TOP VIEW
VIDEO INPUT 1 SYNC SEP 2 COMP SYNC INPUT 3 HORIZ SAWTOOTH INPUT 4 GND 5 OSC PHASE INPUT 6 OSC QUAD INPUT 7 OSC OUTPUT 8 16 HORIZ PULSE INPUT 15 AGC FILTER 14 IF GAIN CLAMP 13 IF AGC 12 TUNER REV. AGC 11 TUNER FWD AGC 10 HORIZ AFC FILTER 9 SUPPLY VOLTAGE
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. Copyright
(c) Harris Corporation 1999
File Number
1183.2
8-42
CA3154
Absolute Maximum Ratings
DC Supply Voltage (V+ to V-) . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Thermal Information
Thermal Resistance (Typical, Note 1) JA (oC/W) PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Maximum Junction Temperature (Plastic Package) . . . . . . . . 150oC Maximum Storage Temperature Range . . . . . . . . . .-65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300oC
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . -40oC to 85oC
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE: 1. JA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
PARAMETER Power Supply Current Video Inverter Voltage
Terminal 5 to GND, and Terminal 9 to +12V, Unless Otherwise Specified TEST CONDITIONS SYMBOL (TERMINALS CONNECTED AS SHOWN BELOW) I9 V2 V3H V3L Measure (9) (1) to +4V, (2) 12k to GND, (3) 27k to GND, Measure (2) (1) to +4V, (2) 12k to GND, (3) 27k to GND, Measure (2) (1) to +4V, (3) 27k to GND, Measure (3) TEMP (oC) 25 25
MIN 10 5.2
TYP -
MAX 22 6.4
UNITS mA V
Sync Separator High Output Voltage Sync Separator Low Output Voltage Video Noise Clamp Voltage AGC Discharge Current
25
10.7
-
-
V
25
-
-
1.3
V
V3 Clamp (1) to +3.1V, (3) 27k to GND, Measure (3) I15 (1) to +4.4V, (2) 10k to GND, (15) 470 to Discharge +6V, (16) 27k to 12V, Measure (15) I15 Charge I15 Leakage V1TH V13L (1) to +3.45V, Otherwise, Same as Above
25 25
10.7 0.6
-
1.4
V mA
AGC Charge Current
25
-2.1
-
-4.8
mA A V
AGC Comparator Leakage
(1) to +3.45V, (2) 10k to GND, (15) 4.7k to +6V, Measure (15) Adj. (1) for I15 = 0 0.1mA, (2) 10k to GND, (15) 4.7k to +6V, (16) 27k to +12V, Measure (1) (11) 10k to GND, (12) 10k to +12V, (13) 22k to +5V, (14) 1k to +2.95V, (16) 1k to +2.2V, Measure (13) (11) 10k to GND, (12) 10k to 12V, (13) 2.2k to +5V, (14) 1k to +2.95V, (15) 1k to +5.3V, Measure (11) Same as Above, but Measure (12)
25
-20
-
20
AGC Threshold Voltage
25
3.8
4
4.3
Minimum IF AGC
25
0.75
-
1.25
V
Forward Tuner AGC Leakage Current
I11 Leakage
25
-20
-
20
A
Reverse Tuner AGC Leakage
I12 Leakage V13H V11L
25
-10
-
10
A V V
IF AGC High Voltage Forward Tuner AGC Low Voltage
Same as Above, but Measure (13) (11) 3.6k to GND, (12) 3.16k to +12V, (13) 2.2k to +5V, (14) 1k to +2.95V, (15) 1k to +7.9V, Measure (11) Same as Above, but Measure (12)
25 25
3.65 0.8
-
4.15 3.2
Reverse Tuner AGC Low Voltage Maximum IF AGC Voltage
V12L V13H
25
1.65
-
3.25
V
(11) 10k to GND, (12) 10k to +12V, (13) 2.2k to +5V, (14) 1k to +2.95V, (15) 1k to +7.9V, Measure (13) (2) 10k to GND, (3) to GND, (4) 5k to +3.8V, (10) 10k to +6V, Limit GND at (3) to 10s, Measure 10
25
4.85
-
5.2
V
Phase Detector Leakage Current
I10L
25
-5
-
5
A
8-43
CA3154
Electrical Specifications
PARAMETER Phase Detector Bias Voltage Oscillator Output Voltage Terminal 5 to GND, and Terminal 9 to +12V, Unless Otherwise Specified (Continued) TEST CONDITIONS SYMBOL (TERMINALS CONNECTED AS SHOWN BELOW) V4 V6 f6FR f6H Connect Oscillator Loop Shown in Test Circuit to (6), (7), (8); (3) to GND for 10s Max, Measure (6) Same as Above TEMP (oC) 25 25
MIN 2.65 0.6
TYP -
MAX 3.1 1.6
UNITS V VP-P kHz
Oscillator Free-Running Frequency Oscillator Frequency High
25
475
-
535
Connect Oscillator Circuit Shown in Test Circuit to (10), (7), (8); (2) 10k to GND, (4) 5k to +18V, Measure (6) Same as Above, Except (4) 5k to +3.8V (3) 10 to GND for 10s Max (8) 10 to GND for 10s Max (3) 10 to GND for 10s Max
25
520
-
-
kHz
Oscillator Frequency Low Sync Separator Short Circuit Oscillator Output Short Circuit
f6L I3 Max I8 Max
25 25 25
-
-
485 40 130
kHz mA mA
IF GAIN CLAMP AGC DISCHARGE FILTER CAP HORIZ GATING PULSE INPUT 15
IF AGC
AGC DELAY TUNER REV AGC +12V TUNER POWER FWD AGC SUPPLY 11 9
14
13
12
16
KEYED AGC GATE
IF AGC AMP
TUNER REV AGC AMP
TUNER FWD AGC AMP
+12V
OSC OUT 7V 1 4V VIDEO INPUT 5 GND 2 3 COMPOSITE 4 SYNC SEPARATOR SYNC OUTPUT HORZ OSC BUFFER AMP SYNC SEPARATOR SYNC AMP AFC 503.5 kHz (32H) 8 QUAD FB IN 7 6 OSC FB PHASE SHIFT IN 10 AFC HORIZ SAWTOOTH FILTER 32 X HORIZ FREQ HORIZ OUTPUT
PULSE HORIZONTAL INPUT
FIGURE 1. FUNCTIONAL BLOCK DIAGRAM OF CA3154
8-44
CA3154
TO
6
TO 470
7
2mH Q 10
TO 1k
8
620pF 2%
56pF 2%
330pF 2%
1.8k
NOTE: Oscillator loop to be used as indicated in the electrical characteristics chart, with coil adjusted for typical unit to 503.5kHz for f6FR. FIGURE 2. ELECTRICAL CHARACTERISTICS TEST CIRCUIT
+12V V13 POT. DELAY SETTING V14 B V13
V15
A
IF AGC
IF MAX GAIN AT IF GAIN RED. TUNER GAIN LOW SIGNAL RANGE REDUCTION RANGE LEVEL RF INPUT SIGNAL
V11(TUNER FWD AGC) V12(TUNER REVERSE AGC) V13(MIN) = V14 -2.1V V14IF(MAX)GAIN BIAS V15(MIN) = V14 -0.7V VDELAY VO
FIGURE 3. TYPICAL OPERATION OF AGC CIRCUITS USING THE CA3154
9 12V R4 9.5K R6 500 R38 15K R10 7.5K R40 16.6K Q37 4.5V Q38 7V Q3 Q33 R5 22K Q4 Q6 R1 R.6K Q2 Q1 R2 390 R3 390 R8 520 3.4V R7 3.4K Q35 R39 1K R41 15K R9 580 R45 7.18K Q40 Q41 Q44 R47 15K Q36 Q42 R48 1.7K R49 200 R42 15K Q46 Q43 R52 33 R53 4.17K SYNC TO HOR AFC R83 500 R46 4.24K 10.7V R43 5K Q39 R50 7.9K Q45 R51 27K
R44 2.5K
4V VIDEO INPUT 1
R54 13.5K
VIDEO TO AGC
SYNC SEP.
REF BIAS TO AGC (4V) 2
SYNC TO AGC
SYNC OUTPUT 3
5
FIGURE 4. SCHEMATIC OF SYNC SEPARATOR SECTION OF THE CA3154
8-45
CA3154
VIDEO FROM VIDEO BUFFER AMP REF BIAS (4V) SYNC FROM SYNC SEP R24 500 DELAY SET
13 IF AGC
12 TUNER REV AGC
9 +12V
R13 400 Q6
R14 100
R25 500
R26 15K
R34 950 Q30
R35 425
Q10 Q8 R16 5K Q16 R12 100 Q13 Q19 R19 500 R20 500 Q12 R18 1.5K Q21 R85 800 Q25 Q17 Q18 HORIZ PULSE IN 16 R21 1K Q19 Q20 R27 6.2K R30 6.7K Q27 Q26 Q22 R29 400 Q28 R31 2.5K Q29 Q23 Q11 Q24
Q31 Q32 R37 5K
Q5 R11 100
Q7
TUNER 11 FWD AGC
Q15 R22 15K
R17 6.8K
R28 400 15 14 IF GAIN CLAMP
R32 575
R33 200
5
FIGURE 5. SCHEMATIC OF AGC SECTION OF THE CAA3154
10 R61 2.22K Q74 R62 10K Q54 Q55 R77 100K R70 3.7K R68 2.3K 6.1V Q49 R58 8.2K R57 10K Q51 R59 10K Q57 R60 8.2K R65 1.9K 1.4mA SYNC FROM SYNC SEP 0.5mA Q47 R55 200 Q48 Q56 R56 200 R66 4.7K R64 100 R67 4.7K R71 100 Q60 R71 100 Q61 R79 3.3K 5 Q58 R69 10K 2.8V R75 33K Q62 R73 4.7K Q63 Q64 R74 4.7K Q65 R76 11K Q59 Q66 R63 2.2K HORIZ AFC FILTER R81 R78 3K Q70 Q68 Q67 Q69 Q71 3.3K Q73 Q72 R82 14 8 OSC OUTPUT 9 +12V
HORIZ. SAWTOOTH INPUT 4 Q50
Q53 Q52
R80 9.9K QUAD OSC 7 PHASE SYNC OSC INPUT 6
FIGURE 6. SCHEMATIC OF AFC-OSCILLATOR SECTION OF THE CA3154
8-46
CA3154
AGC IF 4.7F 4.3V 220 1.2k 1k DELAY 7V 500 4V VIDEO INPUT 2.2k 150pF 16 HORIZ. P.B. PULSE (+60V) INPUT 33k CA3154 2.7k 0.22F 15 14 13 12 11 10 9 0.1F 4.5k 2.7k 2.2F 3.9k 16.5k 33pF 330 1.0F 0.0068F TUNER REV TUNER FWD
1
2
3
4
5
6
7
8 680 1.2k
10k
1.2k 1F 470 180k 220k 0.0047F
0.1F 470 39pF
Q 10 2.4mH
18 0.033F
620pF
1.2k 470pF +12V POWER SUPPLY
27H SYNC SEPARATOR OUTPUT-POSITIVE SYNC TIPS
32 X HORIZ. FREQ. (503.5kHz) OSC. OUTPUT
FIGURE 7. TYPICAL APPLICATION OF THE CA3154
8-47

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