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参数资料
| 型号： | MAX4350 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | Ultra-Small, Low-Cost, 210MHz, Dual-Supply Op Amps with Rail-to-Rail Outputs |
| 中文描述： | 超小型、低成本、210MHz、双电源运算放大器，满摆幅输出 |
| 文件页数： | 8/11页 |
| 文件大小： | 466K |
| 代理商： | MAX4350 |
ful attention to inputs and outputs to avoid large para-
sitic capacitance. Whether or not you use a constant-
impedance board, observe the following design guide-
lines:
Don
’
t use wire-wrap boards; they are too inductive.
Don
’
t use IC sockets; they increase parasitic capaci-
tance and inductance.
Use surface-mount instead of through-hole compo-
nents for better high-frequency performance.
Use a PC board with at least two layers; it should be
as free from voids as possible.
Keep signal lines as short and as straight as possi-
ble. Do not make 90
°
turns; round all corners.
Rail-to-Rail Outputs,
Ground-Sensing Input
The input common-mode range extends from
V
EE
to (V
CC
- 2.25V) with excellent common-mode
rejection. Beyond this range, the amplifier output is a
nonlinear function of the input, but does not undergo
phase reversal or latchup. The output swings to within
125mV of either power-supply rail with a 2k
load.
Output Capacitive Load and Stability
The MAX4350/MAX4351 are optimized for AC perfor-
mance. They are not designed to drive highly reactive
loads, which decrease phase margin and may produce
excessive ringing and oscillation. Figure 2 shows a cir-
cuit that eliminates this problem. Figure 3 is a graph of
the Isolation Resistance (R
ISO
) vs. Capacitive Load.
Figure 4 shows how a capacitive load causes exces-
sive peaking of the amplifier
’
s frequency response if
the capacitor is not isolated from the amplifier by a
resistor. A small isolation resistor (usually 20
to 30
)
placed before the reactive load prevents ringing and
oscillation. At higher capacitive loads, AC performance
is controlled by the interaction of the load capacitance
and the isolation resistor. Figure 5 shows the effect of a
27
isolation resistor on closed-loop response.
Coaxial cable and other transmission lines are easily
driven when properly terminated at both ends with their
characteristic impedance. Driving back-terminated
transmission lines essentially eliminates the line
’
s
capacitance.
M
Ultra-Small, Low-Cost, 210MHz, Dual-Supply
Op Amps with Rail-to-Rail Outputs
8
_______________________________________________________________________________________
R
G
R
F
R
ISO
50
C
L
V
OUT
V
IN
R
TIN
MAX435 _
Figure 2. Driving a Capacitive Load Through an Isolation Resistor
30
25
20
5
10
15
0
CAPACITIVE LOAD
(pF)
50
0
100
200
150
250
I
)
Figure 3. Isolation Resistance vs. Capacitive Load
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4350EUK | 制造商:Maxim Integrated Products 功能描述:ULTRA-SMALL LOW-COST 250MHZ DUAL - Rail/Tube |
| MAX4350EUK+ | 制造商:Maxim Integrated Products 功能描述:OP AMP SGL VOLT FDBK R-R O/P 5.5V/11V 5PIN SOT-23 - Rail/Tube |
| MAX4350EUK+T | 功能描述:高速运算放大器 210MHz Dual-Supply w/Rail-Rail Output RoHS:否 制造商:Texas Instruments 通道数量:1 电压增益 dB:116 dB 输入补偿电压:0.5 mV 转换速度:55 V/us 工作电源电压:36 V 电源电流:7.5 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX4350EUK-T | 功能描述:高速运算放大器 RoHS:否 制造商:Texas Instruments 通道数量:1 电压增益 dB:116 dB 输入补偿电压:0.5 mV 转换速度:55 V/us 工作电源电压:36 V 电源电流:7.5 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX4350EXK | 制造商:Maxim Integrated Products 功能描述:ULTRA-SMALL LOW-COST 250MHZ DUAL - Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
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