ICS8533AG-01 ICST [Integrated Circuit Systems], ICS8533AG-01 Datasheet - Page 8

• Manufacturer Part Number: ICS8533AG-01
• Description: LOW SKEW, 1-TO-4 DIFFERENTIAL-TO-3.3V LVPECL FANOUT BUFFER
• Manufacturer: ICST [Integrated Circuit Systems]

Figure 8 shows how the differential input can be wired to accept single end levels. The reference voltage V_REF ~
V
to the input pin. The ratio of R1 and R2 might need to be adjusted to position the V_REF in the center of the
input voltage swing. For example, if the input clock swing is only 2.5V and V
R2/R1 = 0.609.
8533AG-01
CC
/2 is generated by the bias resistors R1, R2 and C1. This bias circuit should be located as close as possible
W
IRING THE
F
IGURE
D
IFFERENTIAL
8: S
A
CLK_IN
CLK_IN
INGLE
PPLICATION
www.icst.com/products/hiperclocks.html
0.1uF
0.1uF
C1
C1
E
NDED
I
NPUT TO
D
S
IGNAL
IFFERENTIAL
R1
1K
V_REF
R2
1K
R1
1K
V_REF
R2
1K
8
I
NFORMATION
D
A
V
RIVING
V
CC
CCEPT
CC
+
-
+
-
D
-
IFFERENTIAL
TO
S
-3.3V LVPECL F
INGLE
CC
= 3.3V, V_REF should be 1.25V and
I
E
NPUT
NDED
L
L
EVELS
ICS8533-01
OW
ANOUT
S
KEW
REV. B JULY 16, 2001
, 1-
B
UFFER
TO
-4