CDK3404 8-bit, 180MSPS, Triple Video DAC Rev 3F Data Sheet CDK3404 8-bit, 180MSPS, Triple Video DAC FEATURES General Description n 8-bit resolution, 180MSPS CDK3404 is a low-cost triple D/A converters that are tailored to fit graphics n 2.5% gain matching and video applications where speed is critical. n 0.5% linearity error CMOS-level inputs are converted to analog current outputs that can drive n Sync and blank controls 25-37.5 loads corresponding to doubly-terminated 50-75 loads. A sync n 1.0V video into 37.5 or 75 load pp current following SYNC input timing is added to the IO output. BLANK G n Internal bandgap voltage reference will override RGB inputs, setting IO , IO and IO currents to zero when G B R n Low glitch energy BLANK = L. Although appropriate for many applications, the internal 1.25V n Single +3.3V power supply reference voltage can be overridden by the V input. REF Few external components are required, just the current reference resistor, APPLICATION S current output load resistors, bypass capacitors, and decoupling capacitors. n Video signal conversion RGB Package is a 48-lead TQFP. Fabrication technology is CMOS. Performance is YC C B R guaranteed from -40C to +125C (CDK3404A) and 0C to 70C (CDK3404C). Composite, Y, C n Multimedia systems Block Diagram n Image processing n PC Graphics SYNC SYNC BLANK 8 8-bit D/A IO G7-0 G Converter 8 8-bit D/A IO B7-0 B Converter 8 8-bit D/A IO R7-0 R Converter CLOCK COMP R REF +1.25V V REF Ref Ordering Information Part Number Package Pb-Free RoHS Compliant Operating Temp Range Packaging Method Package Quantity CDK3404CTQ48 TQFP-48 Yes Yes 0C to +70C Tray 250 CDK3404ATQ48 TQFP-48 Yes Yes -40C to +125C Tray 250 Moisture sensitivity level for all parts is MSL-3. Exar Corporation www.exar.com 48720 Kato Road, Fremont CA 94538, USA Tel. +1 510 668-7000 - Fax. +1 510 668-7001CDK3404 8-bit, 180MSPS, Triple Video DAC Rev 3F Data Sheet Pin Configuration TQFP-48 GND 1 36 R REF G0 2 35 V REF G1 3 34 COMP G2 4 33 IO R TQFP G3 5 32 IO G G4 6 CDK3404 31 V DDA G5 7 30 V DDA G6 8 29 IO B G7 9 28 GND BLANK 10 27 GND SYNC 11 26 CLOCK V 12 25 NC DDD Pin Assignments Pin No. Pin Name Description Clock and Pixel I/O 26 Clock Input CLK 47-40 Red Pixel Data Inputs R7-0 92 Green Pixel Data Inputs G7-0 2316 Blue Pixel Data Inputs B7-0 Controls 11 Sync Pulse Input SYNC 10 Blanking Input BLANK Video Outputs Red Current Output 33 IOR 32 IOG Green Current Output 29 IOB Blue Current Output Voltage Reference 35 V Voltage Reference Output/Input REF 36 R Current-Setting Resistor REF 34 COMP Compensation Capacitor Power and Ground 30, 31 V Analog Power Supply DDA 12 V Digital Power Supply DDD 1, 14, 15, 27, 28, 38, GND Ground 39, 48 13, 24, 25, NC No Connect 37 2009-2013 Exar Corporation 2/11 Rev 3F NC 13 48 GND GND 14 47 R7 GND 15 46 R6 B0 16 45 R5 B1 17 44 R4 18 43 R3 B2 B3 19 42 R2 B4 20 41 R1 B5 21 40 R0 B6 22 39 GND B7 23 38 GND NC 24 37 NC