ML6509
This is a very important characteristic that the terminator
helps overcome by increasing the noise margin and
boosting the step as high as possible. This capability for
the ML6509 implementation is illustrated in the attached
simulation graphs which show the terminator performance
under different cable impedance situations and a
comparison is shown with the standard Boulay terminator,
under identical conditions.
2.0V
0.8V
2
V1(2) = 796.9mV
V2(2) = 2.0V
∆V(2)
= 1.203V
Figure 4. Transient Response (Actual)
(Approximately 110W, 10 feet long, ribbon cable stock)
TERMPWR
NC
NC
GND
DISCNKT
LPWR
L9
TERMPWR
L9
L8
10µF
L8
NC
NC
GND
DISCNKT
ML6509
L7
V
REF
L6
ML6509
L7
V
REF
L6
0.1µF
L5
L4
L3
10µF
LPWR
L1
L2
L5
L4
L3
0.1µF
10µF
Two Position
DIP Switch
L1
L2
1
50 Pin SCSI Header Connector
Figure 5. Typical Application Circuit
6
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
