CA3217 INTERSIL | Alldatasheet

Document overview

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Technical content

Features

  • All Chroma Processing and Demodulating Circuitry on a Single Chip in a 28 Lead Plastic Package
  • Phase Locked Subcarrier Regeneration Utilizing Sample and Hold Techniques
  • Supplementary ACC with Overload Detector to Prevent Over Saturation of the Picture Tube
  • Linear DC Controls for Chroma Gain and Tint
  • Dynamic “Flesh Correction” - Corrects Purple and Green Flesh Colors without Affecting Primary Colors
  • Balanced Chroma Demodulators with Low Output Impedance for Direct Coupling
  • Internal RF Filtering
  • Requires Few External Components
  • Automatic Beam Limiter
  • Chroma Luminance Tracking Picture Control May 1997 Pinout CA3217 (PDIP) TOP VIEW CHROMA OUT CHROMA CONTROL CHROMA INPUT OVERLOAD FILTER ACC, KILLER FILTER SANDCASTLE PULSE GND APC FILTER OSCILLATOR IN 90o OSCILLATOR IN 180o OSCILLATOR OUT TINT CONTROL BEAM LIMITER PICTURE CONTROL LOW PASS FILTER BRIGHT CONTROL VCC RED Q CARRIER IN I CARRIER IN DEMODULATOR CHROMA IN OVERLOAD, FLESH DISABLE CARRIER OUT LUMINANCE BLUE GREEN File Number 1332.3 NOT RECOMMENDED FOR NEW DESIGNS

Absolute Maximum Ratings Operating Conditions Power Dissipation CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress o nly rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not i mplied. Electrical Specifications TA = +25oC PARAMETERS TEST CONDITIONS MIN TYP MAX UNITSTEST S2 S3 S4 S5 S6 mVP-P CHROMA mVP-P BURST IN mVP-P LUMA RELAYS ENERGIZED DC ELECTRICAL SPECIFICATIONS (Test 1 Through 5) Pin 13 Bal XPT SWITCHING ELECTRICAL SPECIFICATIONS (Tests 6 Through 26) 200% ACC (Note 3) P21 T8 11.2V 4.0V 6.3V 11.2V 250 250 K4, K7 100 % 20% ACC (Note 3) P21 T8 11.2V 4.0V 6.3V 11.2V 25 25 K4, K7 90 % Tint Center (Note 4) S5 Vary 11.2V 4.0V Vary 11.2V 250 125 K4, K7 6.5 V DC Luma Ratio (Note 6) P21 11.2V 6.3V 4.0V T11 11.2V 125 K1, K3, K7 50 % Linearity (Note 7) P21 11.2V Vary 3.0 T11 11.2V 425 K3, K7 4 V P-P T19 = T19/T18 P21 11.2V T18 3.0 T11 11.2V 212.5 K3, K7 50 % G-Y Ratio (Note 11) P20 Vary T25 11.2V 4.0V T11 11.2V 250 125 0.33 R B-Y Ratio (Note 11) P22 11.2V 4.0V T11 11.2V 250 125 1.20 R NOTES: 1. With K 7 energized and frequency counter at D vary C1 for 3.579175MHz. Then with K4 energized, check for pull-in. Repeat for frequency tuned to 3.579875MHz. For all other tests tune to 3.579545MHz ±10Hz. 2. Vary S 2 for 1.5VP-P at Pin 21. 3. % of 100% ACC. S5 voltage. 5. Black to White. 6. T17 = T17/T16. 7. Adjust S3 for 4.0V P-P. 8. AC amplitude = 50mV P-P reference 15kHz. 9. Adjust beam limiter to 10.7V. 10. Adjust beam limiter to 9.8V. 11. Adjust S2 for 1.5V P-P at Pin 21, then calculate P20/P21 and P22/P21.

Typical Performance of the CA3217E FUNCTION TYPICAL DATA Nominal Supply 11.2V Nominal Dissipation 500mW Oscillator Stability Supply Variation 10-14V5 H z Variation With Temperature (∆T = +50oC) 25Hz AFPC Characteristics DC Loop Gain 33Hz/Degree Pull In Range ±500Hz ACC Characteristics 100% Chroma Input Level 250mV P-P on Red Bar 3dB Point At 20% Nominal Input Level Hue Control Range 100 o Saturation Control Range 40dB (Min) DEMODULATOR PARAMETERS RELATIVE AMPLITUDE ANGLE R - Y 1.0 93 o B - Y 1.2 2 o G - Y 0.3 258 o Bandwidth (Chroma) 900kHz Flesh Control Primary Control in the +1 Half Plane Chroma Overload Control Two Levels Picture Control 40dB Brightness Control Black Level Clamped on 3V to 5V Level Beam Limiting On Picture and Brightness Controls Luma Bandwidth 5MHz (Min) Sandcastle Input 1.2 - 2.3V Blanking >3.3V Burst Gate Maximum Linear Output R5 V G3 V B3 . 7 V

Schematic Diagram (Continued) CA3217E

FIGURE 8. TYPICAL APPLICATION CIRCUIT