www.cadeka.com
TMC3503
Triple Video D/A Converter
8 bit, 80 Msps, 5V
Features
•
•
•
•
•
•
•
8-bit resolution
80, 50, and 30 megapixels per second
±0.5 LSB linearity error
Sync, blank, and white controls
Independent sync current output
1.0V p-p video into 37.5Ω or 75Ω load
Enhancemenet of ADV7120
– Internal bandgap voltage reference
– Double-buffered data for low distortion
– Power-down sleep mode
Double-buffered data for low distortion
TTL-compatible inputs
Low glitch energy
Single +5 Volt power supply
Description
The TMC3503 is a high-speed triple 8-bit D/A converter
especially suited for video and graphics applications.
It offers 8-bit resolution, TTL-compatible inputs, low power
consumption, a power-down sleep mode, and requires only a
single +5 Volt power supply. It has single-ended current
outputs, SYNC and BLANK control inputs, and a separate
current source for adding sync pulses to any D/A converter
output. WHITE and SLEEP control inputs are available on
PLCC parts. It is ideal for generating analog RGB from
digital RGB and driving computer display and video moni-
tors. Three speed grades are available: 30, 50, and 80 Msps.
The TMC3503 triple D/A converter is available in a 44-lead
plastic J-leaded PLCC. It is also available in a 48-lead plastic
LQFP package. It is fabricated on a sub-micron CMOS
process with performance guaranteed from 0°C to 70°C.
•
•
•
•
Applications
• Video signal conversion
– RGB
– YC
B
C
R
– Composite, Y, C
• Multimedia systems
• Image processing
• True-color graphics systems
• Broadcast television equipment
• High-Definition Television (HDTV) equipment
• Direct digital synthesis
Block Diagram
SYNC
BLANK
WHITE [PLCC only]
8
SYNC
IO
S
[LQFP only]
8 bit D/A
Converter
IO
G
G
7-0
B
7-0
8
8 bit D/A
Converter
IO
B
R
7-0
SLEEP [PLCC only]
CLOCK
8
8 bit D/A
Converter
IO
R
COMP
R
REF
V
REF
65-3503-01
+1.235V
Ref
REV. 1.02 11/24/99
CADEKA [ CADEKA MICROCIRCUITS LLC. ]
