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TDA9181T Fiches technique(PDF) 2 Page - NXP Semiconductors |
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TDA9181T Fiches technique(HTML) 2 Page - NXP Semiconductors |
2 / 32 page 2000 Nov 22 2 Philips Semiconductors Objective specification Integrated multistandard comb filter TDA9181 FEATURES • One-chip multistandard adaptive comb filter • Cross luminance reduction • Cross colour reduction • No chroma trap, therefore sharper vertical luminance transients • Analog discrete-time signal processing, therefore no quantization noise • Anti-aliasing and reconstruction filters are included • Input switch selects between two Y/CVBS inputs • Output switch selects between combed CVBS and an external Y/C source • fSC as well as 2 × fSC colour subcarrier signal may be applied • Alignment free • Few external components • Low power. GENERAL DESCRIPTION The TDA9181 is a an adaptive PAL/NTSC comb filter with two internal delay lines, filters, clock control and input clamps. Video standards PAL B, G, H, D, I, M and N and NTSC M are supported. Two CVBS input signals can be selected by means of an input switch. The selected CVBS input signal is filtered to obtain a combed luminance output signal and a combed chrominance output signal. Switched capacitor circuit techniques are used, requiring an internal clock, locked on to the colour subcarrier frequency. The colour subcarrier frequency as well as twice the colour subcarrier frequency may be applied to the IC. In addition to the comb filter the circuit contains an output switch so that a selection can be made between the combed CVBS signal and an external Y/C signal. The IC is available in a DIP16 and SO16 package. The supply voltage is 5 V. QUICK REFERENCE DATA ORDERING INFORMATION SYMBOL PARAMETER MIN. TYP. MAX. UNIT VCCA analog supply voltage 4.5 5.0 5.5 V ICCA analog supply current − 25 − mA VDDD digital supply voltage 4.5 5.0 5.5 V IDDD digital supply current − 10 − mA Vi(Y/CVBS)(p-p) luminance or CVBS input signal voltage (peak-to-peak value) 0.7 1.0 1.4 V Vi(CIN)(p-p) chrominance input signal voltage (peak-to-peak value) − 0.7 1.0 V Vi(FSC)(p-p) colour subcarrier input signal voltage (peak-to-peak value) 100 200 400 mV Vo(Y/CVBS)(p-p) luminance or CVBS output signal voltage (peak-to-peak value) 0.6 1.0 1.54 V Vo(CIN)(p-p) chrominance output signal voltage (peak-to-peak value) − 0.7 1.1 V TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION TDA9181P DIP16 plastic dual in-line package; 16 leads (300 mil); long body SOT38-4 TDA9181T SO16 plastic small outline package; 16 leads; body width 7.5 mm SOT162-1 |
Numéro de pièce similaire - TDA9181T |
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