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TDA8761M Datasheet(PDF) 2 Page - NXP Semiconductors |
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TDA8761M Datasheet(HTML) 2 Page - NXP Semiconductors |
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2 / 20 page  1995 Mar 20 2 Philips Semiconductors Preliminary specification 9-bit analog-to-digital converter for digital video TDA8761 FEATURES • 9-bit resolution • Sampling rate up to 30 MHz • DC sampling allowed • One clock cycle conversion only • High signal-to-noise ratio over a large analog input frequency range (8.5 effective bits at 10 MHz full-scale input at fclk = 30 MHz) • No missing codes guaranteed • In range (IR) 3-state TTL output • TTL compatible digital inputs and outputs • Low-level AC clock input signal allowed • External reference voltage regulator • Power dissipation only 360 mW (typical) • Low analog input capacitance, no buffer amplifier required • No sample-and-hold circuit required. APPLICATIONS Analog-to-digital conversion for: • Video data digitizing • Digital Video Broadcasting (DVB) • Cable TV. GENERAL DESCRIPTION The TDA8761 is a 9-bit analog-to-digital converter (ADC) for professional video and digital video set box applications. It converts the analog input signal into 9-bit binary-coded digital words at a maximum sampling rate of 30 MHz. Its linearity performance ensures the required conversion accuracy in case of 256QAM demodulator concept and for all symbol frequencies. All digital inputs and outputs are TTL compatible, although a low-level sine wave clock input signal is allowed. QUICK REFERENCE DATA Note 1. fi = 11 MHz and fclk = 30 MHz; fi = 8 MHz and fclk = 20 MHz. ORDERING INFORMATION SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT VCCA analog supply voltage 4.75 5.0 5.25 V VCCD digital supply voltage 4.75 5.0 5.25 V VCCO output stages supply voltage 4.4 5.0 5.25 V ICCA analog supply current − 30 tbf mA ICCD digital supply current − 22 tbf mA ICCO output stages supply current − 22 tbf mA AINL AC integral non-linearity note 1; full scale input sine wave −±0.75 tbf LSB note 1; 50% full scale input sine wave −±0.5 tbf LSB ADNL AC differential non-linearity note 1; full scale input sine wave −±0.5 tbf LSB note 1; 50% full scale input sine wave −±0.3 tbf LSB fclk(max) maximum clock frequency 30 −− MHz Ptot total power dissipation − 360 tbf mW TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION TDA8761M SSOP28 plastic shrink small outline package; 28 leads; body width 5.3 mm SOT341-1 |
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