
Philips Electronics
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.
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.