NTE7084 Integrated Circuit Color TV Sync Deflection Circuit Description: The NTE7084 is an IC containing not only the main functions required to achieve synchronization and deflection in color television receivers but also a generator of horizontal, vertical blanking pulses, and a generator of burst gate pulses (sandcastle type) in an 18–Lead DIP type package. This is a multifunctional device ideally suited for use in color television receivers aiming at high–quality picture reproduction. Functions: D Synchronizing Separation D Vertical Oscillation D Vertical Drive D Horizontal AFC D X–Ray Protection D Horizontal Oscillation D Sandcastle Pulse (Burst Gate Pulse + Horizontal Blanking Pulse) D Composite Blanking Pulse (Vertical + Horizontal Blanking Pulse) Features: D Horizontal and Vertical Oscillations are Stable Against Variations in Ambient Temperature and Supply Voltage due to Small Warm–Up Drift. D Small Variation in Horizontal Oscillation Frequency D Good Linearity and Interlace because DC Bias at Vertical Output Stage is Subjected to Sampling Control Within Retrace Time. D Vertical Blanking Pulse Width can be set freely by Peripheral Parts. D Minimized Picture Distortion because AFC Circuit is Defeated During Vertical Trigger Pulse Input Period. D Multifunctional and Compact Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Maximum Supply Voltage, VCC14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14V Maximum Current Dissipation, ICC18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16mA Maximum Applied Voltage, V11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –6V Allowable Power Dissipation (TA ≤ +65°C), PDmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 570mW 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) Recommended Supply Voltage, VCC14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V Electrical Characteristics: (TA = +25°C, VCC14 = 12V unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit VCC14 Current Dissipation ICC14 13.5 – 29.0 mA VCC18 Supply Voltage VCC18 11.8 – 13.2 V – – 13 mA Sync Separator Input DC Level 9.0 – 9.6 V Sync Signal Peak Value 9.5 – 11.5 V Burst Gate Pulse Peak Value (SCP) 9.5 – 11.5 V Zener Bias Minimum Current Burst Gate Pulse Delay Time 1 (SCP) TBR – – 0.5 µs Burst Gate Pulse Delay Time 2 (SCP) TBF 3.6 – 4.2 µs 2.7 – 3.3 V Horizontal Blanking Pulse Peak Value (SCP) Horizontal Blanking Pulse Peak Value (CBP) I = 1mA 12.7 – 13.5 V Vertical Blanking Pulse Peak Value (CBP) Load Resistance R = 33kΩ 7.2 – 8.2 V Vertical Frequency Pull–In Range Vertical Sync 60Hz 9.0 – 11.0 Hz VR1 = fv center 55Hz 50 – 60 Hz –0.5 – 0.5 Hz Middle Point Control Threshold Level 3.8 – 4.4 V Vertical Blanking Threshold Level 5.0 – 5.7 V – – 4 V –0.028 – 12 – 17 dB +sign at V1 = 5V, –sign at V1 = 1V ±0.6 – ±1.5 mA fH center 15.73kHz –750 – 750 Hz – – 4 V –50 – 50 Hz Vertical Free–Running Frequency fv V14 = 12V ±1V, 55Hz at 12V Supply Voltage Dependence of Vertical Frequency Vertical Oscillation Start Voltage Temperature Characteristic of Vertical Frequency TA = –10° to +60°C Vertical Driver Amplification Factor Horizontal AFCD.C Loop Gain Horizontal Free–Running Frequency fH Horizontal Oscillation Start Voltage Supply Voltage Dependence of Horizontal Frequency VZ – VZ x 90% Pin Connection Diagram AFC Comparison Sawtooth Wave Input AFC Output 1 Time Constant Circuit 3 Horizontal Output 4 18 +VCC18 (Horizontal) Composite Blanking 17 Pulse Output 16 Video Signal Input (Positive) 15 Time Constant Circuit Holddown Input 5 14 +VCC14 (Vertical) GND 6 Vertical Drive Output Vertical Drive Sawtooth Wave Input Vertical Output Middle Point Voltage 7 8 13 Sandcastle Pulse Output 12 Horiz, Vert Sync Signal Output 11 Vertical Trigger Input 9 10 Time Constant Circuit 2 0.028 Hz/°C 18 10 1 9 .870 (22.1) Max .250 (6.35) .150 (3.8) .100 (2.54) .800 (20.3) .125 (3.17) Min