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 ≤ +55°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 825mW Derate Linearly Above TA = +55°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.7mW/°C Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40° to +85°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65° to +150°C Lead Temperature (During Soldering, 1/16” (1.59mm) from case, 10s max), TL . . . . . . . . . . +265°C Electrical Characteristics: (TA = +25°C, V+ =11.6V unless otherwise specified) Test Conditions Parameter Static Characteristics S1 S2 S3 Chroma In Burst In V4 V17 Typ Unit IT 42 mA R−Y, G−Y, B−Y Outputs V8, V9, V10 5.3 V OSC Reference Inputs V11, V12 3.7 V Chroma Demodulator Input V13 2.9 V Chroma Processor Input V1 2.2 V Supply Current Symbol Electrical Characteristics (Cont’d): (TA = +25°C, V+ =11.6V unless otherwise specified) Test Conditions Symbol S1 S2 S3 Chroma In Parameter Dynamic Characteristics Burst In V4 V17 Typ Unit 1.5V 7V ±300 Hz Minimum OSC Pull−In Range (Note 1) V12 2 1 1 OSC Level V12 2 1 1 0.6 VP−P 100 Percent ACC V13 1 1 1 1.0 VP−P Minimum Gain Control V13 1 1 1 11.6V 20 mVP−P 50 Percent Gain Control V13 1 1 1 6.0V 50 200 Percent ACC V13 1 1 1 546mVP−P 1.5V 100 20 Percent ACC V13 1 1 1 54.6VP−P 100 % of 100% ACC Value Maximum Kill Output V13 1 1 1 54.6mVP−P 4mVP−P 20 mVP−P Minimum Unkill Output V13 1 1 1 400 mVP−P Overload Detector (OLD) V13 1 1 2 546mVP−P 273mVP−P 1.0 VP−P R−Y Sensitivity (Eg = 282mVP−P, 3.53MHz) V10 1 2 1 0 0.8 VP−P R−Y Ratio B−Y/R−Y (Note 2) V8 1 2 1 120 % G−Y Ratio G−Y/R−Y (Note 2) V9 1 2 1 33 % Maximum R−Y Output (Eg = 2VP−P, 3.53MHz) V10 1 2 1 3.0 VP−P Minimum Tint Control Range f13 1 1 1 80 Degrees 273mVP−P 30mVP−P 273mVP−P 0V to 11.6V 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 24 Horiz Key Pulse Input ACC Filter 2 23 AFPC Filter ACC Filter 3 Sat Control 4 22 AFPC Filter 21 Overload Det/Killer Filter 5 20 Processor Section Chroma Output 6 19 GND 7 B − Y Output 8 OSC Filter/Phase Shift Input 18 VCC G − Y Output 9 17 Tint Control 16 Carrier Filter R − Y Output 10 15 “Flesh Corrector”/Carrier Output Q Ref Input 11 I Ref Input 12 14 “Flesh Corrector”/Overload Det Disable 13 Demod Chroma 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)