TDA4555

Features: · Gain controlled chrominance amplifier for PAL, SECAM and NTSC· ACC rectifier circuits (PAL/NTSC, SECAM)· Burst blanking (PAL) in front of 64 ms glass delay line· Chrominance output stage for driving the 64 ms glass delay line (PAL, SECAM)· Limiter stages for direct and delayed SECAM ...

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TDA4555 Picture
SeekIC No. : 004516351 Detail

TDA4555: Features: · Gain controlled chrominance amplifier for PAL, SECAM and NTSC· ACC rectifier circuits (PAL/NTSC, SECAM)· Burst blanking (PAL) in front of 64 ms glass delay line· Chrominance output sta...

floor Price/Ceiling Price

Part Number:
TDA4555
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/3/28

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Product Details

Description



Features:


· Gain controlled chrominance amplifier for PAL, SECAM and NTSC
· ACC rectifier circuits (PAL/NTSC, SECAM)
· Burst blanking (PAL) in front of 64 ms glass delay line
· Chrominance output stage for driving the 64 ms glass delay line (PAL, SECAM)
· Limiter stages for direct and delayed SECAM signal
· SECAM permutator Demodulator part
· Flyback blanking incorporated in the two synchronous demodulators (PAL, NTSC)
· PAL switch
· Internal PAL matrix
· Two quadrature demodulators with external reference tuned circuits (SECAM)
· Internal filtering of residual carrier
· De-emphasis (SECAM)
· Insertion of reference voltages as achromatic value (SECAM) in the (B-Y) and (R-Y) colour difference output stages (blanking) Identification part
· Automatic standard recognition by sequential inquiry
· Delay for colour-on and scanning-on
· Reliable SECAM identification by PAL priority circuit
· Forced switch-on of a standard
· Four switching voltages for chrominance filters, traps and crystals
· Two identification circuits for PAL/SECAM (H/2) and NTSC
· PAL/SECAM flip-flop
· SECAM identification mode switch (horizontal, vertical or combined horizontal and vertical)
· Crystal oscillator with divider stages and PLL circuitry (PAL, NTSC) for double colour subcarrier frequency
· HUE control (NTSC)
· Service switch




Specifications

Supply voltage (pin 13)                                                     VP = V13-9             max.             13,2                      V
Voltage range at pins 10, 11, 17, 23, 24, 25, 26, 27,
28 to pin 9 (ground)                                                         Vn-9                         0 to VP                                     V
Current at pin 12                                                               I12                          max.            8                          mA
Peak value                                                                        I12M                         max.          15                         mA
Total power dissipation                                                    Ptot                           max.           1,4                        W
Storage temperature range                                              Tstg                         -25 to + 150                            
Operating ambient temperature range                            Tamb                          0 to + 70                                



Description

The TDA4555 and TDA4556 are monolithic integrated multistandard colour decoders for the PAL, SECAM, NTSC 3,58 MHz and NTSC 4,43 MHz standards. The difference between the TDA4555 and TDA4556 is the polarity of the colour difference output signals (B-Y) and (R-Y).




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