
SPT1018
8-BIT, HIGH SPEED D/A CONVERTER
Signal Processing Technologies, Inc.
4755 Forge Road, Colorado Springs, Colorado 80907, USA
Phone: (719) 528-2300 FAX: (719) 528-2370
Sync, Blank, Bright, Ref - High
D0 - D3
D4 - D7
(MSBs)
4 To 15
Decode
Output
Current
Switches
Out +
Out -
Video Controls In
Video Data In
Feedthrough
Convert
Ref+
Ref-
Video Data In
4
4
4
4
2
4
Ref
Buffer
Register
Comp
FEATURES
275 MWPS Conversion Rate - Version A
165 MWPS Conversion Rate - Version B
Compatible with TDC1018 and HDAC10180
with Improved Performance
RS-343-A Compatible
Complete Video Controls: Sync, Blank, Bright
and Reference White (Force High)
10KH, 100K ECL Compatible
Single Power Supply
Registered Data and Video Controls
Differential Current Outputs
ESD Protected Data and Control Inputs
APPLICATIONS
High Resolution Color or Monochrome Raster
Graphics Displays
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
GENERAL DESCRIPTION
The SPT1018 is a monolithic 8-bit digital-to-analog converter
capable of accepting video data at a 165 or 275 MWPS rate.
Complete with video controls (Sync, Blank, Reference White
[Force High], Bright), the SPT1018 directly drives doubly-
terminated 50 or 75 ohm loads to standard composite video
levels. The standard set-up level is 7.5 IRE. The SPT1018 is
pin-compatible with the HDAC10180 and the TDC1018, with
improved performance. The SPT1018 contains data and
control input registers, video control logic, reference buffer,
and current switches.
The SPT1018 is available in a 24-lead PDIP package in the
industrial temperature range. Contact the factory for military
temperature and /883 versions.
BLOCK DIAGRAM