参数资料
型号: MAX3971AUTP+T
厂商: Maxim Integrated Products
文件页数: 6/9页
文件大小: 0K
描述: IC AMP LIMIT 10.7GBPS 20-TQFN
标准包装: 2,500
类型: 限幅放大器
应用: 光纤学网络
安装类型: 表面贴装
封装/外壳: 20-WFQFN 裸露焊盘
供应商设备封装: 20-TQFN-EP(4x4)
包装: 带卷 (TR)
CML Output Circuit
An equivalent circuit for the output network is shown in
Figure 3. It consists of a pair of 50
Ω resistors connect-
ed to VCC driven by the collectors of an output differen-
tial transistor pair (Q1 and Q2). The differential output
signals are clamped by transistors Q3 and Q4 when
the DISABLE input is high.
DISABLE Function
A logic signal can be applied to the DISABLE pin to
squelch the output signal. When the output is disabled,
an offset is added to the output, preventing the follow-
ing stage from oscillating, if DC-coupled. See Figure 4
for the input stage of the DISABLE function.
MAX3971A
+3.3V, 10.7Gbps Limiting Amplifier
6
_______________________________________________________________________________________
+3.3V
100k
Ω
DISABLE
20
μA
Figure 4. TTL Input Stage
VCC1
50
Ω
50
Ω
IN+
GNDIN+
GNDIN-
IN-
ESD
STRUCTURES
Figure 2. CML Input Equivalent Circuit
VCC3
50
Ω
50
Ω
Q1
Q2
Q3
Q4
OUT+
OUT-
DISABLE
DATA
ESD
STRUCTURES
Figure 3. CML Output Equivalent Circuit
+3.3V
MAX3971A
VCC1
VCC2
VCC3
0.001
μF
0.001
μF
0.001
μF
L
SUPPLY FILTER
Figure 5. Power-Supply Filter
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