参数资料
型号: ICS8516FYIT
元件分类: 时钟及定时
英文描述: LOW SKEW CLOCK DRIVER, 16 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP48
封装: 7 X 7 MM, 1.40 MM HEIGHT, MS-026, LQFP-48
文件页数: 12/13页
文件大小: 165K
代理商: ICS8516FYIT
8516FYI
www.icst.com/products/hiperclocks.html
REV. A JULY 30, 2004
8
Integrated
Circuit
Systems, Inc.
ICS8516I
LOW SKEW, 1-TO-16
DIFFERENTIAL-TO-LVDS CLOCK DISTRIBUTION CHIP
APPLICATION INFORMATION
Figure 1 shows how the differential input can be wired to accept
single ended levels. The reference voltage V_REF = V
DD/2 is
generated by the bias resistors R1, R2 and C1. This bias circuit
should be located as close as possible to the input pin. The
FIGURE 1. SINGLE ENDED SIGNAL DRIVING DIFFERENTIAL INPUT
WIRING THE DIFFERENTIAL INPUT TO ACCEPT SINGLE ENDED LEVELS
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
DD= 3.3V, V_REF should
be 1.25V and R2/R1 = 0.609.
LVDS DRIVER TERMINATION
A general LVDS interface is shown in
Figure 2. In a 100
dif-
ferential transmission line environment, LVDS drivers require
a matched load termination of 100
across near the receiver
input. For a multiple LVDS outputs buffer, if only partial out-
puts are used, it is recommended to terminate the un-used
outputs.
FIGURE 2. TYPICAL LVDS DRIVER TERMINATION
3.3V
R1
100
Zo = 50 Ohm
LVDS_Driver
HiPerClockS
CLK
nCLK
Zo = 50 Ohm
3.3V
V_REF
R1
1K
C1
0.1u
R2
1K
Single Ended Clock Input
CLKx
nCLKx
VDD
相关PDF资料
PDF描述
ICS8516FYI LOW SKEW CLOCK DRIVER, 16 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP48
ICS8516FYLF 8516 SERIES, LOW SKEW CLOCK DRIVER, 16 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP48
ICS8516FYT 8516 SERIES, LOW SKEW CLOCK DRIVER, 16 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP48
ICS8520DYT 8520 SERIES, LOW SKEW CLOCK DRIVER, 16 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP48
ICS8520DYLF 8520 SERIES, LOW SKEW CLOCK DRIVER, 16 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP48
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参数描述
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