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TDA8775G Scheda tecnica(PDF) 2 Page - NXP Semiconductors |
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2 / 16 page 1996 Aug 14 2 Philips Semiconductors Preliminary specification Triple 10-bit video Digital-to-Analog Converter (DAC) TDA8775 FEATURES • 10-bit resolution • Sampling rate up to: – 50 MHz for normal mode; RL = 37.5 Ω – 35 MHz for LOW power mode; RL = 150 Ω • Internal current reference • Current reference selector for: – normal mode, RL = 37.5 Ω (typ.) – low-power mode, RL = 150 Ω (typ.) • No deglitching circuit required • SYNC and BLANK control inputs • 0.66 V output voltage range on red and blue channels • 1 V output voltage range on green channel (including sync) • BLANK control input on the 3 channels • + 5 V power supply. APPLICATIONS • General purpose high-speed digital-to-analog conversion • Digital TV • Graphic display • Desktop video processing. GENERAL DESCRIPTION The TDA8775 consists of three 10-bit video Digital-to-Analog Converters (DACs). They convert the digital input signals into current outputs at a maximum conversion rate of 50 MHz. The DACs are based on current source architecture with selectable current reference. The devices are fabricated in a 5 V CMOS process that ensures high functionality with low power dissipation. QUICK REFERENCE DATA ORDERING INFORMATION SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT VDDA analog supply voltage 4.5 5.0 5.5 V VDDD digital supply voltage 4.5 5.0 5.5 V IDDA analog supply current SLT = 1; RL = 37.5 Ω− 67 tbf mA SLT = 0; RL = 150 Ω− 16 tbf mA IDDD digital supply current SLT = 1; RL = 37.5 Ω− 15 tbf mA SLT = 0; RL = 150 Ω− 10 tbf mA INL DC integral non-linearity −±1 ±2 LSB DNL DC differential non-linearity −±0.7 ±1.0 LSB fclk(max) maximum clock frequency SLT = 1; RL = 37.5 Ω 50 −− MHz SLT = 0; RL = 150 Ω 35 −− MHz Ptot total power dissipation SLT = 1; RL = 37.5 Ω; fclk =50MHz − 410 tbf mW SLT = 0; RL = 150 Ω; fclk =35MHz − 130 tbf mW TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION TDA8775G LQFP48 plastic low profile quad flat package; 48 leads; body 7 × 7 × 1.4 mm SOT313-2 |
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