SPT5140SIN

SIGNAL PROCESSING TECHNOLOGIES SPT APPLICATIONS SPT5140 8-BIT, ULTRAHIGH-SPEED D/A CONVERTER • Raster graphics • High-resolution color or monochrome displays to 2k x 2k pixels • Medical electronics: CAT, PET, MR imaging displays • CAD/CAE workstations • Solids modeling • General-purpose high-speed D/A conversion • Digital synthesizers • Automated test equipment • Digital transmitters/modulators FEATURES • 400 MWPS nominal conversion rate • RS-343-A compatible • Complete video controls: Sync, Blank, Bright and Reference White (Force High) • 10 KH, 100K ECL compatible • Single power supply • Registered data and video controls • Differential current outputs • Stable on-chip bandgap reference • 50 and 75 ohm output drive • ESD-protected data and control inputs GENERAL DESCRIPTION The SPT5140 is a monolithic 8-bit digital-to-analog converter capable of accepting video data at 400 MWPS. Complete with video controls — Sync, Blank, Reference White (Force High), Bright — the SPT5140 directly drives doubly-terminated 50 or 75 ohm loads to standard composite video levels. Standard set-up level is 7.5 IRE. The SPT5140 includes an internal precision bandgap reference which can drive two other SPT5140s in an RGB graphics system. The SPT5140 is available in a 24-lead PDIP package in the industrial temperature range of –25 °C to +85 °C. Contact the factory for military temperature and /883 versions. BLOCK DIAGRAM Sync, Blank, Bright, Ref – White Video Controls In 4 Video Data In D0–D3 4 4 4 Out + Register Video Data In D4–D7 (MSBs) 4 Output Current Switches Out – 4 to 15 Decode Feedthrough Convert 2 ISet Ref In Ref Out Ref Buffer Bandgap Reference Signal Processing Technologies, Inc. 4755 Forge Road, Colorado Springs, Colorado 80907, USA Phone: (719) 528-2300 FAX: (719) 528-2370 Website: http://www.spt.com E-Mail: sales@spt.com ABSOLUTE MAXIMUM RATINGS (Beyond which damage may occur)1 25 °C Supply Voltages VEE (measured to VCC) .......................... –7.0 to 0.5 V Input Voltages CONV, Data, and Controls ...................... VEE to 0.5 V (measured to VCC) Ref+ (measured to VCC) ......................... VEE to 0.5 V Ref– (measured to VCC) .......................... VEE to 0.5 V Temperature Operating, ambient ............................... –25 to +85 °C junction ....................................... + 175 °C Lead, soldering (10 seconds) ...................... + 300 °C Storage ............................................. –60 to + 150 °C Note 1: Operation at any Absolute Maximum Rating is not implied. See Electrical Specifications for proper nominal applied conditions in typical applications. ELECTRICAL SPECIFICATIONS VCC = ground, VEE = –5.2 V ±0.3 V, TA = TMIN to TMAX, CC = 0 pF, ISet = 1.105 mA, unless otherwise specified. PARAMETERS DC Electrical Characteristics Integral Linearity Error Differential Linearity Error Gain Error Gain Error Tempco Bandgap Tempco Input Capacitance, ISet, Ref Out Compliance Voltage, + Output Compliance Voltage, – Output Equivalent Output Resistance Output Capacitance Maximum Current, + Output Maximum Current, – Output Output Offset Current Input Voltage, Logic High Input Voltage, Logic Low Convert Voltage, Common Mode Range (VICM) Convert Voltage, Differential (VIDF) Input Current, Logic Low, Data and Controls Input Current, Logic High, Data and Controls Input Current, Convert Reference Voltage Measured to VCC Reference Output Current Input Capacitance, Data and Controls Power Supply Sensitivity Supply Current TEST CONDITIONS 1.0 mA