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 col-
or television sets and especially aims at increasing the detections accuracy of the X鈥搑ay 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:
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The output circuit of synchronizing separation is emitter follower type
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The X鈥搑ay protection circuit is differential dual inouts thyristor system
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The ground pins for horizontal and vertical are provided separately.
Functions:
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Synchro Separator
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Horizontal AFC
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Vertical Driver
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Vertical Blanking Pulse Making
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Horizontal Oscillator
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Vertical Oscillator
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X鈥揜ay Protector
Features:
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Multifunctional and Small鈥揝ize
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Minimum Number of Parts Required
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Horizontal and Vertical Oscillators being Stable to Variation of Ambient Temperature and Supply
Voltage Owing to Small Warming鈥揢p Drift.
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Small Variation of Horizontal Oscillation Frequency
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Good Linearity and Interface Owing to DC Bias at Vertical Output Stage being Sampling
Controlled within Retrace Time.
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Vertical Blanking Pulse Width being Freely Set Up According to Peripheral Parts.
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High Detection Accuracy of X鈥揜ay Protection Circuit.
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