Figure 8 - DAC Output Circuit
Current
Sink #1
Current
Sink #N
Out+
Out-
Reference
Amplifier
Ref+
Reference
Current
Ref-
+
-
ISeg
ISeg
VEE
Comp
Figure 9 - Video Output Waveform for Standard Load
IRE
110
100
0 mV
-73 mV
Bright
Normal High (White)
256 Gray Levels
Video
Normal Low (Black)
7.5
0
-728 mV
-781 mV
Blank
-40
-1071 mV
Sync
Figure 10 - Equivalent Input Circuits - Data, Clock, Controls and Reference
V
CC
Ref-
Conv
Ref+
Reference
Segment
Switch
Conv
I
Bias
V
EE
Data and
Controls
V
I
Bias
I
Bias
I
Bias
V
EE
80 kΩ
I
Bias
V
EE
SPT1018
9
5/14/97