參數(shù)資料
型號(hào)： 935163070112
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 顏色信號(hào)轉(zhuǎn)換
英文描述： COLOR SIGNAL ENCODER, PDIP32
封裝： 0.400 INCH, SHRINK, PLASTIC, SOT-232-1, DIP-32
文件頁(yè)數(shù)： 27/34頁(yè)
文件大?。?/td> 500K
代理商： 935163070112
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TDA8505
Information as of 2000-08-24
TDA8505; SECAM encoder
The TDA8505 is a highly integrated SECAM encoding IC that is designed for use in all applications that require transformation of R, G and
B signals or Y, U and V signals to a standard SECAM signal.
The specification of the input signals is fully compatible with those of the TDA8501 PAL/NTSC encoder.
l
Two input stages, R, G, B and Y, -(R-Y), -(B-Y) with multiplexing.
l
Chrominance processing, highly integrated, includes vertical identification, low frequency pre-emphasis and high frequency pre-
emphasis (anti-Cloche) and bandpass filter.
l
Fully controlled FM modulator which produces a signal in accordance with the SECAM standard without adjustments.
l
Two reference oscillators, one for D'R f
0 (4.40625 MHz) and one for D'B f0 (4.250 MHz). These oscillators are tuned by PLL loop with
the frequency of the line sync as reference. Crystal tuning, or tuning by external reference source, of the reference oscillators is
possible.
l
Output stages, CVBS and separated Y + SYNC and CHROMA. For CVBS output, signal amplitude 2 V (p-p) nominal, thus only an
external emitter follower is required for 75
driving.
l
Sync separator circuit and pulse shaper, to generate the required pulses for the processing, line, frame, FH/2 and chrominance
blanking.
l
A 3-level sandcastle pulse is generated for PAL/NTSC to SECAM transcoding.
l
FH/2 input for locking with another decoder.
l
Colour killing on the internal colour difference signals.
l
Internal bandgap reference.
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