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| NTE7123 Integrated Circuit Sync Deflection Circuit for Color TV Description: The NTE7123 is an integrated circuit that has a wide vertical pull-in range of 20Hz and contains a generator of horizontal, vertical blanking as well as the main functions required to provide synchronization and deflection in color CRT displays and also accepts TTL input. It is a multifunctional IC aiming at high-quality picture reproduction. Features: D Non-adjusting at vertical sync 50Hz/60Hz due to vertical pull-in range of 20Hz. 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 Any vertical blanking pulse width can be set by peripheral parts. D The AFC defeat function is eliminated during vertical trigger period to use the NTE7123 as horizontal/vertical sync seperate input type only. D Multifunctional and small-sized 6 Pin Dual-In-Line Package. Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Maximum Supply Voltage, VCC13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14V Maximum Current Dissipation, ICC16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16mA Allowable Power Dissipation (TA = +65C), PDmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 570mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +85C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +125C Electrical Characteristics: (TA = +25C, VCC13 = 12V, ICC16 = 13mA unless otherwise specified) Parameter VCC13 Current Dissipation VCC16 Supply Voltage Vertical Frequency Pull-In Range Vertical Free-Running Frequency Supply Voltage Dependance of Vertical Frequency Temperature Characteristics of Vertical Frequency Vertical Driver Amplification Factor Horizontal Free-Running Frequency Reduced Voltage Characteristic of Horizontal Frequency Temperature Characteristic of Horizontal Frequency Horizontal Output Pulse Width Horizontal Output Drive Current Pin Connection Diagram Test Conditions ICC13 Min 14.7 11.8 19.0 Typ - - - - - - - - - - - - Max 22.2 13.2 23.0 60 0.5 0.028 17 750 50 3.4 26.5 10.0 Unit mA V Hz Hz Hz Hz/C dB Hz Hz Hz/C s mA fv center 55Hz V13 = 121V, 55Hz at 12V TA = -10 to 60C 50 -0.5 -0.028 12 fH center 15.73kHz VZ - VZ x 90% TA = -10 to +60C (IC Alone) fH = 15.73kHz -750 -50 -3.4 21.5 6.6 AFC Comparison Sawtooth Wave Input AFC Output Time Constant Circuit Horizontal Output Holddown Input GND Vertical Drive Output Vertical Drive Sawtooth Wave Input 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC 16 (Horizontal) Composite Blanking Pulse Output Video Signal Input (Positive) VCC 13 (Vertical) Horizontal, Vertical Sync Sep Output Vertical Trigger Output Time Constant Circuit Vertical Output Middle Point Voltage 16 9 .260 (6.6) Max 1 8 .785 (19.9) Max .200 (5.08) Max .245 (6.22) Min .300 (7.62) .100 (2.54) .700 (17.7) |
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