|Category||Multimedia => Video => TV Applications => Chroma|
|Description||TV Chroma Processor|
|Datasheet||Download CA3126 datasheet
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[ /Title (CA31 26) /Subject (TV Chrom a Processor) /Autho r /Keywords (Harris Semiconductor, TV chroma processor, subcarrier regeneration, ntsc, acc, overload detector, keyed chroma output, color processor, industrialFeatures
Phase Locked Subcarrier Regeneration Utilizes Sample-and-Hold Techniques Automatic Chrominance Control (ACC)/Killer Detector Employs Sample-and-Hold Techniques Supplementary ACC with an Overload Detector to Prevent Oversaturation of this Picture Tube Sinusoidal Subcarrier Output Keyed Chroma Output Emitter Follower Buffered Outputs for Low Output Impedance Linear DC Saturation ControlDescription
The Harris is a monolithic silicon integrated circuit designed for TV chroma processing and is ideally suited for NTSC color graphic applications that require subcarrier regeneration of the color burst signal.
PART NUMBER CA3126E CA3126M1 TEMP. RANGE (oC) to 85 PACKAGE 16 Ld PDIP 20 Ld SOIC PKG. NO. E16.3 M20.3Applications
TV/CATV Receiver Circuits NTSC Color Decoder/Processor Computer Graphics Subcarrier Regenerator Timing Reference for Frame Grabbers DSP Clock Timing Reference SourceCHROMA IN AFPC FILTER + AFPC FILTER RF BYPASS GROUND VCO OUT VCO IN CARRIER OUT
16 CHROMA GAIN CONT. 15 CHROMA OUT 14 ZENER REF 13 OVERLOAD DET.
CHROMA IN AFPC FILTER + NC AFPC FILTER RF BYPASS
20 CHROMA GAIN CONT. 19 CHROMA OUT NC ZENER REF OVERLOAD DET. V+ ACC + ACC HORIZ. KEY IN
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. Copyright
DC Supply Voltage (V+ to GND) (Note 13.2V DC Current: Into V+ Pin. 38mA Into Zener Reference Pin. 20mA DC Voltage (Horizontal Key In) Negative Rating. -5V Positive Rating. 3V
Thermal Resistance (Typical, Note 1) JA (oC/W) PDIP Package. 100 SOIC Package. 85 Maximum Junction Temperature (Plastic Packages). 150oC Maximum Storage Temperature Range. to 150oC Maximum Lead Temperature (Soldering 10s). 300oC (SOIC - Lead Tips Only)
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.
NOTES: 1. This rating does not apply when using the internal zener reference in conjunction with an external pass transistor. JA is measured with the component mounted on an evaluation PC board in free air.
= 25oC, Chroma Gain Control at maximum position for all tests except as noted. Electrical specifications referenced to test circuit. SWITCH POS. S1 S2 VCHROMA INPUT TP1 MIN TYP MAX UNITS
SWITCHING ELECTRICAL SPECIFICATIONS (Note 3) Pull-In Range (Note 4) Oscillator Output 100% Chroma Output Overload Detector Minimum Chroma Output (Note 5) 200% Chroma Output 20% Chroma Output Kill Level NOTES: 3. Except for pull-in range testing, tune oscillator trimmer capacitor for free running frequency ±10Hz. 4. Set Switch 1 to Position 2, detune oscillator ±250Hz, set Switch 1 to Position 1, and check for oscillator pull-in. 5. Set Chroma Gain Control to minimum position (CCW). V15 VTP1 (Note 1VP-P 0.1VP-P Vary Hz VP-P mVP-P of 100% Reading mVP-P
Pin numbers refer to the PDIP package. (A) Chroma input signal (B) Key pulse input signal
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