HYB18H512321AF
512-Mbit GDDR3
Electrical Characteristics
5.7
Driver current characteristics
5.7.1
Driver IV characteristics at 40 Ohms
Figure 66 represents the driver Pull-Down and Pull-Up IV characteristics under process, voltage and temperature
best and worst case conditions. The actual Driver Pull-Down and Pull-Up current must lie between these two
bounding curves. The value of the external ZQ resistor is 240 Ω, setting the nominal driver output impedance to
40 Ω.
Pull-Up Characterstics
Pull-Down Characterstics
50
45
40
35
30
25
20
15
10
5
0,0
0,5
1,0
1,5
2,0
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
-50
0
0,0
0,5
1,0
1,5
2,0
Vout (V)
VDDQ - Vout (V)
Figure 66 40 Ohm Driver Pull-Down and Pull-Up characteristics
Table 31 lists the numerical values of the minimum and maximum allowed values of the output driver Pull-Down
and Pull-Up IV characteristics.
Table 31
Voltage (V)
Programmed Driver IV Characterisitcs at 40 Ohm
Pull-Down Current (mA)
Pull-Up Current (mA)
Minimum
-2.44
-4.79
-7.03
Minimum
2.32
4.56
6.69
8.74
Maximum
3.04
5.98
Maximum
-3.27
-6.42
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
8.82
-9.45
11.56
14.19
16.72
19.14
21.44
23.61
26.10
28.45
30.45
32.73
34.95
37.10
39.15
41.01
42.53
43.71
44.89
-9.18
-12.37
-15.17
-17.83
-20.37
-22.78
-25.04
-27.17
-29.17
-31.25
-33.00
-35.00
-37.00
-39.14
-41.25
-43.29
-45.23
-47.07
10.70
12.56
14.34
16.01
17.61
19.11
20.53
21.92
23.29
24.65
26.00
27.35
28.70
30.08
—
-11.23
-13.17
-15.01
-16.74
-18.37
-19.90
.21.34
-22.72
-24.07
-25.40
-26.73
-28.06
-29.37
-30.66
—
—
—
Data Sheet
84
Rev. 1.73, 2005-08
05122004-B1L1-JEN8
QIMONDA [ QIMONDA AG ]
