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Desktop Video Processing
CCIR-601 Video Signal Processing
RGB Color Monitors
Image Processing
Direct Digital Synthesis
GENERAL DESCRIPTION
The SPT5230 is a 10-bit, 36 MWPS triple video digital-to-
analog converter specifically designed for high performance,
high resolution color graphics monitor applications and video
processing applications. A single external resistor controls
the full-scale output current. The differential linearity errors of
the DACs are guaranteed to be a maximum of
鹵1.0
LSB over
the full temperature range. The device is available in a 52-
lead QFP package over the commercial temperature range.
BLOCK DIAGRAM
R
OUT
AV
DD
AV
DD
I
OR
AV
DD
I
OG
G
OUT
AV
DD
B
OUT
I
OB
VSSA
V
REF1
V
REF
V
REF2
V
CS2
V
CS1
V
CS
Current
Switch
Cell
Array
(Cell 4)
Current
Switch Cell
Array (Cell 255)
Current
Switch
Cell
Array
(Cell 4)
Current
Switch Cell
Array (Cell 255)
Current
Switch
Cell
Array
(Cell 4)
Current
Switch Cell
Array (Cell 255)
Latch
Latch
Latch
Decoder
Decoder
Decoder
Latch
Latch
Latch
(MSB) DG9
DG8
DG7
DG6
DG5
DG4
DG3
DG2
DG1
(LSB) DG脴
(MSB) DR9
DR8
DR7
DR6
DR5
DR4
DR3
DR2
DR1
(LSB) DR脴
(MSB) DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
(LSB) DB脴
CLKG
CLKR
CLKB