TDA2579C Selling Leads, Price trend, TDA2579C DataSheet download, circuit diagram from SeekIC.com

Features: Synchronization and horizontal part ` Horizontal sync separator and noise inverter ` Horizontal oscillator ` Horizontal output stage ` Horizontal phase detector (sync to oscillator) ` Triple current source in the phase detector with automatic selection ` Normal phase detector time consta...

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SeekIC No. : 004516232 Detail

TDA2579C: Features: Synchronization and horizontal part ` Horizontal sync separator and noise inverter ` Horizontal oscillator ` Horizontal output stage ` Horizontal phase detector (sync to oscillator) ` Trip...

TDA2579C Data Sheet

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Part Number:: TDA2579C
Supply Ability:: 5000

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1~5000

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Negotiable

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15 Days

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Upload time: 2025/1/12

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Product Details

Description

Features:

Synchronization and horizontal part
    ` Horizontal sync separator and noise inverter
    ` Horizontal oscillator
    ` Horizontal output stage
    ` Horizontal phase detector (sync to oscillator)
    ` Triple current source in the phase detector with automatic selection
    ` Normal phase detector time constant is increased to fast during the vertical blanking period (external switching for VTR conditions not necessary)
    ` Slow phase detector time constant and gated sync pulse operation are automatically switched on by an internal sync pulse noise level detection circuit
    ` Fast phase detector time is switched on for locking
    ` Time constant externally switchable
    ` Inhibit of horizontal phase detector and video transmitter identification circuit during equalizing pulses and vertical sync pulse
    ` Inhibit of horizontal phase detector during separated vertical sync pulse
    ` Second phase detector for storage compensation of the line output stage
    ` 3-level sandcastle pulse generator
    ` Automatic adaption of the burst key pulse width
    ` Video transmitter identification circuit
    ` Stabilizer and supply circuit for starting the horizontal oscillator and output stage directly from the mains rectifier
    ` Horizontal output current with constant duty factor value of 55%
    ` Duty factor of the horizontal output pulse is 55% when the horizontal flyback pulse is absent.
Vertical part
    ` fV = 60 Hz (M) system
    ` Vertical synchronization pulse separator without external components and two integration times
    ` Zener diode reference voltage source for the vertical sawtooth generator and vertical comparator
    ` Divider system with three different reset enable windows
    ` Synchronization is set to 528 divider ratio when no vertical sync pulse and no video transmitter is identified
    ` Divider window is forced to wide window when a vertical sync pulse is detected within the window provided by reset divider and end of vertical blanking period, on condition that the voltage on pin 18 is 1.2 V
    ` Divider ratio is 528 (fV = 60 Hz) for DC signal on pin 5
    ` Linear negative-going sawtooth generated via the divider system (no frequency adjustment)
    ` Comparator with low DC level feedback signal
    ` Output stage driver
    ` fV = 60 Hz identification output combined with mute function
    ` Start of vertical blanking is shifted to the start of the pre-equalizing pulses when the divider ratio is between 522 and 528 lines per picture
    ` Guard circuit which generates the vertical blanking pulse level on the sandcastle output pin 17 when the feedback level at pin 2 is not within the specified limits.

Pinout

Connection Diagram

Specifications

SYMBOL	PARAMETER	CONDITIONS	MIN.	MAX.	UNIT
I₁₆	start current	V₁₀ = 0 V	-	9.7	mA
V_P	supply voltage		-	13.2	V
P_tot	total power dissipation		-	1.2	W
T_stg	storage temperature		-55	+150
T_amb	operating ambient temperature		-25	+70

Description

The TDA2579C is an integrated circuit generating all requirements for synchronization of its horizontal oscillator and output stage plus those of the vertical part which comprises a divider system, sawtooth generator, comparator and output stage.

The TDA2579C is almost identical to the TDA2579B. It is optimized for the M (60 Hz) TV system.

TDA2579C

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