VGA DAC Characteristics
© 2009 Advanced Micro Devices, Inc.
45732 AMD 780E Databook 3.10
Proprietary
2-17
2.6
VGA DAC Characteristics
Notes
:
1 - Tested over the operating temperature range at nominal supply voltage, with an Iref of -1.50mA (Iref is the level of the current flowing
out of the RSET resistor).
2 - Tested over the operating temperature range at reduced supply voltage, with an Iref of -1.50mA (Iref is the level of the current flowing
out of the Rset resistor).
3 - Full scale error from the value predicted by the design equations.
4 - About the mid-point of the distribution of the three DACs measured at full scale deflection.
5 - Linearity measured from the best fit line through the DAC characteristics. Monotonicity guaranteed.
6 - Load = 37.5
+ 20 pF with Iref = -1.50 mA (Iref is the current flowing out of the Rset resistor).
7 - Measured from the end of the overshoot to the point where the amplitude of the video ringing is down to +/-5% of the final steady state
value.
8 - This parameter is sampled, not 100% tested.
9 - Monotonicity is guaranteed.
Table 2-12 VGA DAC Characteristics
Parameter
Min
Typ
Max
Notes
Resolution
10 bits
-
-
1
Maximum PS/2 setting Output Voltage
-
0.7V
-
1
Maximum PS/2 setting Output Current
-
18.7mA
-
1
Full Scale Error
+8% / -3%
-
+10%
2, 3
DAC to DAC Correlation
-2%
-
+2%
1, 4
Differential Linearity
-2 LSB
-
+2 LSB
1, 5
Integral Linearity
-2 LSB
-
+2 LSB
1, 5
Rise Time (10% to 90%)
0.58ns
-
1.7ns
1, 6
Full Scale Settling Time
-
TBA
-
1, 7, 8
Glitch Energy
-
TBA
-
1, 8
Monotonicity
-
-
-
9