NTE1784 Integrated Circuit TV Horizontal Processor Description: The NTE1784 is an integrated circuit in a 16–Lead DIP type package designed for use as a horizontal processor circuit for B/W and color television receivers. Features: D Noise Gated Horizontal Sync Separator D Noise Gated Vertical Sync Separator D Horizonyal Oscillator with Frequency Range Limiter D Phase Comparator between Sync Pulses and Oscillator Pulses (PLL) D Phase Comparator between Flyback Pulses and Oscillator Pulses (PLL) D Loop Gain and Time Constant Switching (VCR) D Composite Blanking and Key Pulse Generator D Protection Circuits D Output Stages with High Current Capability Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage (Pin1), VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V Circuit Voltage, V2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V Circuit Voltage, V4, V11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VS Circuit Voltage, V8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VS to –6V Circuit Voltage, V9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +6V to –6V Peak Circuit Current, I2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1A Peak Circuit Current, I3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500mA Circuit Current, I6, I10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA Circuit Current, I7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA Total Power Dissipation (TA ≤ +70°C), Ptot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W Operating Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +150°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +150°C Maximum Thermal Resistance, Junction–to–Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . 80°C/W Electrical Characteristics: (TA = +25°C, VS = 12V unless otherwise specified) Parameter Supply Voltage Supply Current Symbol Test Conditions Min Typ Max Unit 10.0 12.0 13.2 V Output pulses at Pin2 and Pin3 OFF – – 4 V I3 = 0 – 40 52 mA VS IS Electrical Characteristics (Cont’d): (TA = +25°C, VS = 12V unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit 1 3 6 V Horizontal Sync Separator and Noise Gate Input Signal (Peak–to–Peak) Vi Input Switching Voltage V8 I8 = 80µA – 1.5 – V Input Switching Current I8 V8 = 1.4V – 10 – µA Input Blocking Current for Noise Suppression I8 – 0.9 – mA Input Switching Voltage for Noise Suppression V8 – 2.1 – V Leakage Current I8 – – 1 µA 1 3 6 V V8 = –5V Vertical Sync Separator Input Signal (Peak–to–Peak) Vi Input Switching Voltage V9 I9 = 80µA – 1.5 – V Input Switching Current I9 I9 = 1.4V – 5 – µA Leakage Current I9 V9 = –5V – – 1 µA No load at Pin10 11 – – kΩ Vertical Sync Pulse Output Voltage V10 Output Resistance R10 – 10 – kΩ Delay between Leading Edge of Input and Output Signals tLV – 17 – µs Delay between Trailing Edge of Input and Output Signals tTV – 50 – µs Vertical Sync Pulse Duration tV – 190 – µs Output pulses OFF – – 0.5 V Output pulses ON 1 – – V Protection Circuit Input Voltage for Switching Off the Output Pulses V4 Input Resistance R4 – 200 – kΩ Input Current I4 5 – – µA Input Threshold Voltage of Blanking ‘Generator V6 – 1.5 – V Input Threshold Voltage of Phase Comparator V6 – 7.6 – V Input Switching Current I6 V6 ≥ 1.7V – 0.23 – mA Output Voltage (Peak–to–Peak) V3 I3 = 150mAP–P – 10 – V Output Current I3 V3 = 5V – 500 – mA Output Resistance R3 At leading edge of output pulse – 3 – Ω At trailing edge of output pulses – 20 – Ω tp 20 22 26 µs Key Pulse Output Peak Voltage V7K 9 11 – V Blanking Pulse Output Voltage V7B 4.2 4.5 4.8 V Output Resistance R7 – 100 – Ω Flyback Pulse Output Pulse Output Pulse Duration Composite Blanking and Key Pulse Electrical Characteristics (Cont’d): (TA = +25°C, VS = 12V unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Composite Blanking and Key Pulse (Cont’d) Phase Relation between Trailing Edge of Key Pulse and Middle of Sync Input Pulse tSK – 2.7 – µs Key Pulse Duration tK 3.5 3.8 – µs Delay between Flyback Pulse and Blanking Pulse ttb – – 0.2 µs V6 = 1.7V Internal Gating Pulse Gating Pulse Duration tq – 7.5 – µs Phase Relation between Middle of Sync Pulse and Trailing and Leading Edge of Gating Pulse t – 3.75 – µs With coincidence – 6.8 – V Without coincidence – – 4 V I11 – 0.5 – mA Input Voltage V11 0 to 4 or 8.5 to 12 V Output Current –I11 35 – – µA I11 0.4 – – mA Output Voltage V12 – 3 – V Output Resistance R12 4.5V < V11 < 8V – 100 – Ω V11 > 8.5V or V11 < 4V – 40 – kΩ Coincidence Detector Output Voltage Peak Output Current V11 VCR Switch Time Constant Switch Oscillator Low Level Threshold Voltage V14 – 5.4 – V High Level Threshold Voltage V14 – 8.2 – V Charge Current I14 – 0.6 – mA Discharge Current I14 – 0.3 – mA Current Source Supply Voltage V15 – 3 – V Current Source Supply Current I15 – 0.3 – mA Free–Running Frequency fo – 15625 – Hz Adjustment Range – ±10 – % Frequency Control Sensitivity – 52 – Hz/µA Frequency Change when VS Drops to 4V – – ±10 % Oscillator–Flyback Pulse Phase Comparator Control Voltage Range V5 Peak Control Current I5 – – ±0.5 mA Input Current (Blocked Phase Detector) I5 – – 5 µA Permissible Delay between Output Pulse Leading Edge and Flyback Pulse Leading Edge td – tp – tf – µs – – 0.2 % Static Control Error 9.4 to 8.2 V Electrical Characteristics (Cont’d): (TA = +25°C, VS = 12V unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Sync Pulse–Oscillator Phase Comparator Control Voltage Range V13 Control Peak Range I13 4.6 to 1.4 – ±2 – mA – 2 – kHz/µs f – ±700 – Hz to – 2.6 – µs – 65 – mV/µs – 10 – µA/µs Phase Lock Loop Catching and Holding Range V Overall Phase Relationship Phase Relation between Middle of Flyback Pulse and Middle of Sync Pulse Adjustment Sensitivity Pin Connection Diagram VCC 1 Output (–) 2 Output (+) 3 Protection Circuit Input 4 16 GND 15 OSC Current Control 14 OSC 13 Continuous Current Output Phase Shifter Filter 5 12 Time Constant Switch Flyback Input 6 11 Coincidence Detector Key & Blanking Pulse Output 7 10 Vertical Sync Output Sync Separator Input 8 16 9 Vertical Sync Separator Input 9 .260 (6.6) Max 1 8 .785 (19.9) Max .300 (7.62) .200 5.08) Max .245 (6.22) Min .100 (2.54) .700 (17.7)