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TDA8753A Datasheet(PDF) 2 Page - NXP Semiconductors |
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TDA8753A Datasheet(HTML) 2 Page - NXP Semiconductors |
2 / 20 page 1996 Jan 12 2 Philips Semiconductors Product specification YUV 8-bit analog-to-digital interface TDA8753A FEATURES • Triple analog-to-digital converter • 8-bit resolution • Sampling rate up to 20 MHz • Power dissipation of 500 mW (typical) • Internal clamp functions • 4:1:1 output data encoder • Y binary output • U, V two's complement outputs • Sample rate converter permits programmable horizontal compression factors from 1 to 2 • Serial microcontroller interface • TTL compatible inputs. APPLICATIONS • High-speed analog-to-digital conversion for video signal digitizing in 4 :1:1 format • 100 Hz improved definition TV for all formats (4/3, 16/9, 14/9 etc.). GENERAL DESCRIPTION The TDA8753A is a monolithic CMOS 8-bit video low-power analog-to-digital conversion interface for YUV signals. It converts the YUV analog input signal into 8-bit binary coded digital words in format 4 :1:1 at a sampling rate of 20 MHz. All analog signal inputs are clamped. The device includes a digital sample rate converter for variable compression with a factor 1 to 2. QUICK REFERENCE DATA Notes 1. The signal-to-noise ratio without harmonics is measured using a 16 MHz clock frequency. This value is given for a 4.43 MHz input frequency on the Y channel (1.5 MHz on the U and V channels). 2. The external resistor (between VDDA and Iref) fixing internal static currents influences Ptot. The value of the resistor should be 5.6 k Ω (5%). ORDERING INFORMATION SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT VDDA analog supply voltage 4.75 5.0 5.25 V VDDD digital supply voltage 4.75 5.0 5.25 V IDDA analog supply current − 55 63 mA IDDD digital supply current − 45 55 mA INL integral non-linearity fclk = 16 MHz; ramp input −±0.75 − LSB DLE differential non-linearity fclk = 16 MHz; ramp input; Y −±0.5 0.75 LSB fclk = 16 MHz; ramp input; U and V −±0.6 ±0.9 LSB SNR signal-to-noise ratio without harmonics note 1 43 −− dB fclk maximum conversion rate 20 −− MHz Ptot total power dissipation note 2 − 500 650 mW TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION TDA8753A SDIP42 plastic shrink dual in-line package; 42 leads (600 mil) SOT270-1 |
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