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 = +25°C unless otherwise specified) Maximum Supply Voltage, VCC13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14V Maximum Current Dissipation, ICC16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16mA Allowable Power Dissipation (TA = +65°C), PDmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 570mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +85°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +125°C Electrical Characteristics: (TA = +25°C, VCC13 = 12V, ICC16 = 13mA unless otherwise specified) Parameter Test Conditions Min Typ Max Unit 14.7 − 22.2 mA VCC16 Supply Voltage 11.8 − 13.2 V Vertical Frequency Pull−In Range 19.0 − 23.0 Hz 50 − 60 Hz −0.5 − 0.5 Hz −0.028 − 0.028 Hz/°C 12 − 17 dB VCC13 Current Dissipation ICC13 Vertical Free−Running Frequency fv center 55Hz Supply Voltage Dependance of Vertical Frequency V13 = 12±1V, 55Hz at 12V Temperature Characteristics of Vertical Frequency TA = −10° to 60°C Vertical Driver Amplification Factor Horizontal Free−Running Frequency fH center 15.73kHz −750 − 750 Hz Reduced Voltage Characteristic of Horizontal Frequency VZ − VZ x 90% −50 − 50 Hz Temperature Characteristic of Horizontal Frequency TA = −10° to +60°C (IC Alone) −3.4 − 3.4 Hz/°C Horizontal Output Pulse Width fH = 15.73kHz 21.5 − 26.5 μs 6.6 − 10.0 mA Horizontal Output Drive Current Pin Connection Diagram AFC Comparison Sawtooth Wave Input 1 16 VCC 16 (Horizontal) AFC Output 2 15 Composite Blanking Pulse Output Time Constant Circuit 3 14 Video Signal Input (Positive) Horizontal Output 4 13 VCC 13 (Vertical) Holddown Input 5 12 Horizontal, Vertical Sync Sep Output GND 6 11 Vertical Trigger Output Vertical Drive Output 7 10 Time Constant Circuit Vertical Drive Sawtooth Wave Input 8 9 Vertical Output Middle Point Voltage 16 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)