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參數(shù)資料
| 型號： | MAX4137 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 1-Input/4-Output Video Distribution Amplifiers |
| 中文描述： | 1路輸入/4路輸出、視頻分配放大器 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 109K |
| 代理商： | MAX4137 |
Driving Capac itive Loads
The MAX4137/MAX4138 provide maximum AC perfor-
mance with no output load capacitance. This is the
case when they are driving a correctly terminated trans-
mission line (i.e., a back-terminated 75
cable).
However, the MAX4137/MAX4138 are capable of
driving capacitive loads up to 10pF without oscillations,
but with reduced AC performance.
Driving large capacitive loads increases the chance of
oscillations in most amplifier circuits. This is especially
true for circuits with high loop gain, such as voltage fol-
lowers. The amplifier’s output resistance and the load
capacitor combine to add a pole and excess phase to
the loop response. If the frequency of this pole is low
enough and phase margin is degraded sufficiently,
oscillations may occur.
A second problem when driving capacitive loads
results from the amplifier’s output impedance, which
looks inductive at high frequencies. This inductance
forms an L-C resonant circuit with the capacitive load,
which causes peaking in the frequency response and
degrades the amplifier’s gain margin.
The MAX4137/MAX4138 drive capacitive loads up to
10pF without oscillation. However, some peaking (in the
frequency domain) or ringing (in the time domain) may
occur (Figure 3).
M
1-Input/4-Output
Video Distribution Amplifiers
_______________________________________________________________________________________
9
Figure 2. MAX4138 Typical Operating Circuit
N.C.
1
VCCO
2
OUT1
3
OUT2
5
OUT3
8
AGND
9
OUT4
10
VCCO
11
N.C.
12
OUT1
OUT2
OUT3
OUT4
MAX4138
SW1
SW2
SW3
SW4
AGND
4
AGND
21
IN+
20
VEEI
19
RG
18
RF
17
VCCI
16
SEL3
15
SEL4
14
N.C.
13
0.1
μ
F
0.1
μ
F
0.1
μ
F
0.1
μ
F
75
*
75
*
75
*
75
*
75
*
-5V
DC
+5V
DC
+5V
DC
VEEO
6
VEEO
7
0.1
μ
F
N.C.
24
SEL1
23
SEL2
22
-5V
DC
+5V
DC
VIIN
R
F
R
G
IN
* TOTERMINATE TRANSMISSION LINE
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX4138 | 1-Input/6-Output Video Distribution Amplifiers |
| MAX4163ESA | SOT23, Micropower, Single-Supply, Rail-to-Rail I/O Op Amps |
| MAX4162 | SOT23, Micropower, Single-Supply, Rail-to-Rail I/O Op Amps |
| MAX4162-MAX4164 | SOT23, Micropower, Single-Supply, Rail-to-Rail I/O Op Amps |
| MAX4162ESA | SOT23, Micropower, Single-Supply, Rail-to-Rail I/O Op Amps |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4137EWG | 制造商:Rochester Electronics LLC 功能描述: |
| MAX4137EWG+ | 功能描述:視頻放大器 RoHS:否 制造商:ON Semiconductor 通道數(shù)量:4 電源類型: 工作電源電壓:3.3 V, 5 V 電源電流: 最小工作溫度: 最大工作溫度: 封裝 / 箱體:TSSOP-14 封裝:Reel |
| MAX4137EWG+T | 功能描述:視頻放大器 RoHS:否 制造商:ON Semiconductor 通道數(shù)量:4 電源類型: 工作電源電壓:3.3 V, 5 V 電源電流: 最小工作溫度: 最大工作溫度: 封裝 / 箱體:TSSOP-14 封裝:Reel |
| MAX4137EWG-T | 功能描述:視頻放大器 RoHS:否 制造商:ON Semiconductor 通道數(shù)量:4 電源類型: 工作電源電壓:3.3 V, 5 V 電源電流: 最小工作溫度: 最大工作溫度: 封裝 / 箱體:TSSOP-14 封裝:Reel |
| MAX4137EWG-TG068 | 制造商:Maxim Integrated Products 功能描述:185MHZ -3DB BANDWIDTH 1-IN/4-OUT VIDEO DISTRI - Tape and Reel |
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