参数资料
型号: MAX3637ETM+
厂商: MAXIM INTEGRATED PRODUCTS INC
元件分类: 时钟产生/分配
英文描述: 800 MHz, OTHER CLOCK GENERATOR, QCC48
封装: 7 X 7 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, TQFN-48
文件页数: 8/23页
文件大小: 2745K
代理商: MAX3637ETM+
Low-Jitter, Wide Frequency Range,
Programmable Clock Generator with 10 Outputs
MAX3637
16
Interfacing with LVCMOS Input
The equivalent LVCMOS input circuit for CIN is given in
Figure 7. This input is internally biased to allow AC- or
DC-coupling, and has 180kI input impedance. See
Figure 8 for the interface circuit. No signal should be
applied to CIN if not used.
Interfacing with Differential Input
The equivalent input circuit for DIN is given in Figure 9.
This input operates up to 350MHz and contains an
internal 100I differential termination as well as a 35I
common-mode termination. The common-mode termina-
tion ensures good signal integrity when connected to a
source with large common-mode signals. The input can
accept DC-coupled LVPECL signals, and is internally
biased to accept AC-coupled LVDS, CML, and LVPECL
signals (Figure 10). No signal should be applied to DIN
if not used.
Figure 6. Crystal Layout
Figure 7. Equivalent CIN Circuit
Figure 8. Interface to CIN
Figure 9. Equivalent DIN Circuit
180k
1.4V
VBIAS
CIN
ESD
STRUCTURES
VCC
MAX3637
CIN
XO
DC-COUPLED
MAX3637
CIN
XO
0.1F
AC-COUPLED
50
10
DIN
ESD
STRUCTURES
VCC
20k
VCC - 1.3V
DIN
ESD
STRUCTURES
VCC
16pF
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