NTE7086 Integrated Circuit Sync Deflection Circuit for CRT Display Description: The NTE7086 is a syncdeflection circuit IC in a 20–Lead DIP type package dedicated to CRT display use. This device can be connected to the NTE1773/NTE1797 (for vertical output use) to form a syncdeflection circuit that meets every requirement for CRT display use. So far, IC’s for color TV use have been applied to the syncdeflection circuit for CRT display use and general–purpose IC’s such as one–shot multivibrators, inverters, and a lot of transistors have been used to form the peripherals such as the sync input interface and horizontal phase shifter. The NTE7086 contains these peripherals on chip and adopts a stable circuit for horizontal oscillation from 15kHz to 100kHz aiming at improving the characteristics required for CRT display use. Features: D The Horizontal Oscillation Frequency can be Adjusted Stably from 15kHz to 100kHz. D The Horizontal Display can be Shifted Right/Left. D The Horizontal/Vertical Sync Input can be used intact Regardless of the Difference in Pulse Polarity and Pulse Width. D The AFC Feedback Sawtooth Wave can be Obtained by Simply Applying a Flyback Pulse to the IC as a Trigger Pulse. D Any Duty of the Horizontal Pulse Can be Set. D Good Linearity because DC Bias at Vertical Output Stage is Subjected to Sampling Control within Retrace Time. On–Chip Functions: Horizontal Block D AFC D Horizontal OSC D X–Ray Protector D Horizontal Phase Shifter D AFC Sawtooth Wave Generator D Horizontal Pulse Duty Setting Vertical Block D Vertical OSC D Vertical Sawtooth Wave Generator D Sampling Type DC Voltage Control Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Maximum Supply Voltage, V10max, V20max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14V Allowable Power Dissipation (TA ≤ +65°C), PDmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 780mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +85°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C Recommended Operating Conditions: (TA = +25°C unless otherwise specified) Operating Voltage Range, V10opr, V20opr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.0V to 13.5V Recommended Supply Voltage, V10, V20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V Electrical Characteristics: (TA = +25°C, VCC10 = VCC20 = 12V unless otherwise specified) Parameter Current Dissipation Symbol Test Conditions Min Typ Max Unit I10 VCC10 12 – 30 mA I20 VCC20 5 – 12 mA Vertical Sync 60Hz 10 – 12 Hz fv fV center 55Hz 50 – 60 Hz ∆fVv V20 = 12V ±1V –0.5 – 0.5 Hz 55Hz at 12V 3.8 – 4.4 V – – 4.0 V –0.028 – 12 – 18 dB ±1.0 – ±1.9 mA –750 – 750 Hz – – 4 V V10 = 12V ±1V –50 – 50 Hz 15.735kHz at 12V, TA = –10° to +60°C –2.9 – 2.9 Hz/°C V4 0.6 – 0.9 V Holddown Operation Start Voltage V13 0.5 – 0.8 V Horizontal Drive Current I12 6.0 – 12.0 mA Vertical Frequency Pull–In Range Vertical Free–Running Frequency with Increased/Reduced Voltage Vp–in Characteristic of Vertical Frequency Middle–Point Voltage Control Threshold Level Vertical OSC Start Voltage TA = –10° to +60°C Temperature Coefficient of Amplitude Frequency Vertical Driver Amplification Factor (VGV) with Horizontal AFC Loop Current Horizontal Free–Running Frequency Horizontal OSC Start Voltage with Increased/Reduced Voltage IAFC fH ∆fHv Characteristic od Horizontal Frequency with Temperature Characteristic of Horizontal Frequency Comparison Wave Generation Input fH center 15.734kHz 0.028 Hz/°C Operating Voltage Pin Connection Diagram Horiz Trigger Input Phase Adjust Time Constant Sync Pulse Width Time Constant FBP Trigger Input Sawtooth Wave Generating Cap Comparison Voltage Generating Cap AFC Output Horiz OSC Time Constant Discharge Resistor 1 20 Vert Power Supply 2 6 19 Vert Trigger Input 18 Vert OSC Time Constant 17 Middle–Point Voltage Control Point 16 Vert Sawtooth Wave Generation 15 Vert Drive Output 7 14 GND 8 13 X–Ray Protect Input 9 12 Horiz Drive Output 11 Horiz Drive Pulse Width Setting 3 4 5 Horiz Power Supply 10 20 11 .280 (7.12) Max 1 10 .995 (25.3) Max .300 (7.62) .280 (7.1) .100 (2.54) .125 (3.17) Min .385 (9.8)