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TDA8705T Datasheet(PDF) 2 Page - NXP Semiconductors |
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TDA8705T Datasheet(HTML) 2 Page - NXP Semiconductors |
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2 / 16 page  1996 Jan 12 2 Philips Semiconductors Product specification 6-bit high-speed dual Analog-to-Digital Converter (ADC) TDA8705 FEATURES • 2 times 6-bit resolution • Sampling rate up to 40 MHz • High signal-to-noise ratio over a large analog input frequency range (5.8 effective bits at 10 MHz full-scale input at fclk = 40 MHz • TTL output • Two separated inputs (AC-coupling) • TTL compatible digital inputs • Low-level AC clock input signal allowed • Internal reference voltage regulator (external reference regulation possible) • Power dissipation only 250 mW (typical) • Low analog input capacitance, no buffer amplifier required • No sample-and-hold circuit required. APPLICATIONS High-speed analog-to-digital conversion for: • DBS (Digital Broadcast Satellite) • QPSK (Quadrature Phase Shift Keying) demodulation • Video. GENERAL DESCRIPTION The TDA8705 is a 6-bit high-speed dual analog-to-digital converter (ADC) for satellite video and other applications. It converts the two analog input signals into two 6-bit binary-coded digital words at a maximum sampling rate of 40 MHz. All digital inputs and outputs are TTL compatible, although a low-level sine wave clock input signal is allowed. QUICK REFERENCE DATA Note 1. Full-scale sine wave (fi = 10 MHz; fclk = 40 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 4.75 5.0 5.25 V ICCA analog supply current 20 27 32 mA ICCD digital supply current 10 14 18 mA ICCO output stages supply current 10 14 18 mA ILE DC integral linear error −±0.25 ±0.5 LSB DLE DC differential linearity error −±0.25 ±0.5 LSB AILE AC integral linearity error note 1 −±0.5 ±1.0 LSB fclk(max) maximum clock frequency 40 −− MHz Ptot total power dissipation − 250 − mW TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION TDA8705T SO28 plastic small outline package; 28 leads; body width 7.5 mm SOT136-1 |
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