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NTE1539 Integrated Circuit Color TV Sync Deflection Circuit
Description: The NTE1539 is a multifunctional integrated circuit which is based on the internal circuit of the NTE1538. It incorporates various functions required for synchronization and deflection circuits of color television sets and especially aims at increasing the detections accuracy of the X-ray protection circuit. The ground pins for horizontal and vertical are provided separately to enable the easy layout of the printed circuit board. The NTE1539 differs from the NTE1538 in the following points: D The output circuit of synchronizing separation is emitter follower type D The X-ray protection circuit is differential dual inouts thyristor system D The ground pins for horizontal and vertical are provided separately. Functions: D Synchro Separator D Horizontal AFC D Vertical Driver D Vertical Blanking Pulse Making D Horizontal Oscillator D Vertical Oscillator D X-Ray Protector Features: D Multifunctional and Small-Size D Minimum Number of Parts Required D Horizontal and Vertical Oscillators being Stable to Variation of Ambient Temperature and Supply Voltage Owing to Small Warming-Up Drift. D Small Variation of Horizontal Oscillation Frequency D Good Linearity and Interface Owing to DC Bias at Vertical Output Stage being Sampling Controlled within Retrace Time. D Vertical Blanking Pulse Width being Freely Set Up According to Peripheral Parts. D High Detection Accuracy of X-Ray Protection Circuit.
Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Maximum Supply Voltage, V14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14V Maximum Supply Current, I17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16mA Allowable Power Dissipation (TA = +60C), PDmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450mW Operating Temperature Range, Topg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +85C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +125C Recommended Operating Condition: (TA = +25C unless otherwise specified) Recommended Supply Voltage, V14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V Electrical Characteristics: (TA = +25C, V14 = 12V, ICC17 = 13mA unless otherwise specified)
Parameter VCC14 Current Dissipation VCC17 Supply Voltage Vertical Frequency Pull-In Range Vert Free Running Frequency Supply Voltage Dependence of Vertical Frequency Temperature Characteristic of Vertical Frequency Vertical Driver Amplification Factor Horizontal Free Running Frequency Supply Voltage Dependence of Horizontal Frequency Temperature Characteristic of Horizontal Frequency Horizontal Output Pulse Width Horizontal Output Drive Current fH fH center 15.734kHz VZ-VZ x 90% TA = -10 to +60C (IC only) fH = 15.734kHz fv fv center 55Hz V14 = 12 1V, 55Hz at 12V TA = -10 to +60C Symbol ICC14 VCC17 Test Conditions Min 9.0 11.8 9.0 50 -0.5 -0.028 4.0 -750 -50 -3.4 21.5 4.9 Typ - - - - - - - - - - - - Max 15.0 13.2 11.0 60 0.5 Unit mA V Hz Hz Hz
0.028 Hz/C 7.0 750 50 3.4 26.5 8.3 times Hz Hz Hz/C s mA
Pin Connection Diagram
AFC Output 1 Horiz Hold 2 Horiz OSC Output 3 GND 4 X-Ray Protect 5 X-Ray Protect 6 GND 7 Vert Drive Output 8 Vert Height 9
18 Flyback Input 17 VCC (115V) 16 Video Input 15 Sync Separator Output 14 VCC 13 Vert Blank Output 12 Vert Sync Input 11 Vert Hold 10 Vert Feedback
18
10
1
9
.870 (22.1) Max
.250 (6.35)
.150 (3.8)
.100 (2.54) .800 (20.3)
.125 (3.17) Min

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