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NTE986 Integrated Circuit-Linear Single Chip TV Chroma Processor/Demodulator
Description: The NTE986 is a monolithic silicon integrated circuit in a 24-Lead DIP type package that performs the complete chroma processor and demodulating functions for color TV. This simple chip contains all the features of the NTE797 chroma processor and the NTE1176 chroma demodulator. Features: D Phase Locked Subcarrier Regeneration Utilizing Sample and Hold Techniques. D All Chroma Processing and Demodulating Circuitry on a Single Chip D Supplementary ACC with Overload Detector to Prevent Over Saturation of the Picture Tube D Linear DC Controls for Chroma Gain and Tint D Dynamic "Flesh Correction" - Corrects Green and Purple Flesh Colors Without Affecting Primary Colors. D Balanced Chroma Demodulators with Low Output Impedance for Direct Coupling D Internal RF Filtering D Requires Few External Components D Low System Dissipation - 0.5W Nominal Absolute Maximum Ratings: DC Supply Voltage (Between Pin18 and Pin17) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.2V Device Dissipation (TA +55C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 825mW Derate Linearly Above TA = +55C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.7mW/C Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +85C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to +150C Lead Temperature (During Soldering, 1/16" (1.59mm) from case, 10s max), TL . . . . . . . . . . +265C Electrical Characteristics: (TA = +25C, V+ =11.6V unless otherwise specified)
Test Conditions Parameter Static Characteristics Supply Current R-Y, G-Y, B-Y Outputs OSC Reference Inputs Chroma Demodulator Input Chroma Processor Input Symbol IT V8, V9, V10 V11, V12 V13 V1 S1 S2 S3 Chroma In Burst In V4 V17 Typ 42 5.3 3.7 2.9 2.2 Unit mA V V V V
Electrical Characteristics (Cont'd): (TA = +25C, V+ =11.6V unless otherwise specified)
Test Conditions Parameter Dynamic Characteristics Minimum OSC Pull-In Range (Note 1) OSC Level 100 Percent ACC Minimum Gain Control 50 Percent Gain Control 200 Percent ACC 20 Percent ACC Maximum Kill Output Minimum Unkill Output Overload Detector (OLD) R-Y Sensitivity (Eg = 282mVP-P, 3.53MHz) R-Y Ratio B-Y/R-Y (Note 2) G-Y Ratio G-Y/R-Y (Note 2) Maximum R-Y Output (Eg = 2VP-P, 3.53MHz) Minimum Tint Control Range Symbol S1 S2 S3 Chroma In V12 V12 V13 V13 V13 V13 V13 V13 V13 V13 V10 V8 V9 V10 f13 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 273mVP-P 0V to 11.6V 0 546mVP-P 54.6VP-P 54.6mVP-P 4mVP-P 30mVP-P 546mVP-P 273mVP-P 11.6V 6.0V 1.5V 273mVP-P Burst In V4 1.5V V17 7V Typ 300 0.6 1.0 20 50 100 100 20 400 1.0 0.8 120 33 3.0 80 Unit Hz VP-P VP-P mVP-P % of 100% ACC Value mVP-P mVP-P VP-P VP-P % % VP-P Degrees
Note 1. Tune C2 to 3,579,845Hz with S1 in position 2. Put S1 in position 1, and check for pull-in. Repeat for frequency tuned to 3,579,245Hz. For other tests, frequency tuned to 3,579,545Hz 10Hz. Note 2. All input levels up to 2VP-P.
Pin Connection Diagram
Chroma Input 1 ACC Filter 2 ACC Filter 3 Sat Control 4 Overload Det/Killer Filter 5 Processor Section Chroma Output 6 GND 7 B - Y Output 8 G - Y Output 9 R - Y Output 10 Q Ref Input 11 I Ref Input 12
24 Horiz Key Pulse Input 23 AFPC Filter 22 AFPC Filter 21 20 19 18 VCC 17 Tint Control 16 Carrier Filter 15 "Flesh Corrector"/Carrier Output 14 "Flesh Corrector"/Overload Det Disable 13 Demod Chroma Input OSC Filter/Phase Shift Input
24
13
1
12
1.300 (33.02) Max
.520 (13.2)
.225 (5.73) Max
.100 (2.54) 1.100 (27.94)
.126 (3.22) Min
.600 (15.24)

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