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參數(shù)資料
| 型號(hào)： | MAX4352-MAX4454 |
| 廠(chǎng)商： | Maxim Integrated Products, Inc. |
| 英文描述： | Low-Cost, +3V/+5V, 620レA, 200MHz, Single-Supply Op Amps with Rail-to-Rail Outputs |
| 中文描述： | 低成本，采用3V / 5V的，620レ甲，200MHz的，單電源運(yùn)算放大器的軌到軌輸出 |
| 文件頁(yè)數(shù)： | 11/15頁(yè) |
| 文件大小： | 655K |
| 代理商： | MAX4352-MAX4454 |
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M
Low-Cost, +3V/+5V, 620μA, 200MHz,
Single-Supply Op Amps with Rail-to-Rail Outputs
______________________________________________________________________________________
11
Detailed Description
The MAX4452/MAX4352 single, MAX4453/MAX4353
dual, and MAX4454/MAX4354 quad, single-supply, rail-
to-rail, voltage-feedback amplifiers achieve high slew
rates and wide bandwidths while consuming only
620μA per amplifier. Excellent speed/power ratio
makes them ideal for portable devices and high-fre-
quency signal applications.
Internal feedback around the output stage ensures low
open-loop output impedance, reducing gain sensitivity
to load variations. This feedback also produces
demand-driven current bias to the output transistors.
Rail-to-Rail Outputs, Ground-Sensing Input
The input common-mode range extends from (V
EE
-
0.1V) to (V
CC
- 1.5V) 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 180mV of either power-sup-
ply rail with a 1k
load. The input ground-sensing and
the rail-to-rail output substantially increase the dynamic
range.
Output Capacitive Loading and Stability
The MAX4452/MAX4453/MAX4454/MAX4352/MAX4353/
MAX4354 are optimized for AC performance. They are
not designed to drive highly reactive loads. Such loads
decrease phase margin and may produce excessive
ringing and oscillation. The use of an isolation resistor
eliminates this problem (Figure 1). Figure 2 is a graph
of the Optimal Isolation Resistor (R
ISO
) vs. Capacitive
Load.
Applications Information
Choosing Resistor Values
Unity-Gain Configuration
The MAX4452/MAX4453/MAX4454 are internally com-
pensated for unity gain. When configured for unity gain,
a 24
feedback resistor (R
F
) is recommended. This
resistor improves AC response by reducing the Q of
the parallel LC circuit formed by the parasitic feedback
capacitance and inductance.
Inverting and Noninverting Configurations
Select the gain-setting feedback (R
F
) and input (R
G
)
resistor values that best fit the application. Large resis-
tor values increase voltage noise and interact with the
amplifier
’
s input and PC board capacitance. This can
generate undesirable poles and zeros and decrease
bandwidth or cause oscillations. For example, a nonin-
verting gain-of-two configuration (R
F
= R
G
) using 1k
resistors, combined with 2pF of amplifier input capaci-
tance and 1pF of PC board capacitance, causes a pole
at 106MHz. Since this pole is within the amplifier band-
width, it jeopardizes stability. Reducing the 1k
resis-
tors to 100
extends the pole frequency to 1.06GHz,
but could limit output swing by adding 200
in parallel
with the amplifier
’
s load resistor.
Note: For high-gain applications where output offset
voltage is a consideration, choose RS to be equal to
the parallel combination of RF and RG (Figures 3a and
3b).
3b):
R
S
RF
RF
RG
RG
=
×
+
Figure 2. Optimal Isolation Resistor vs. Capacitive Load
V
OUT
V
IN
R
BIN
R
ISO
R
F
C
L
R
G
Figure 1. Driving a Capacitive Load Through an Isolation
Resistor
10
14
12
18
16
22
20
24
28
26
30
0
50
100
150
ISOLATION RESISTANCE
vs. CAPACITIVE LOAD
M
C
LOAD
(pF)
R
I
)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX4352EUK-T | Low-Cost, +3V/+5V, 620レA, 200MHz, Single-Supply Op Amps with Rail-to-Rail Outputs |
| MAX4353ESA | Low-Cost, +3V/+5V, 620レA, 200MHz, Single-Supply Op Amps with Rail-to-Rail Outputs |
| MAX4354ESD | Low-Cost, +3V/+5V, 620レA, 200MHz, Single-Supply Op Amps with Rail-to-Rail Outputs |
| MAX4354EUD | Low-Cost, +3V/+5V, 620レA, 200MHz, Single-Supply Op Amps with Rail-to-Rail Outputs |
| MAX4452EXK-T | Low-Cost, +3V/+5V, 620レA, 200MHz, Single-Supply Op Amps with Rail-to-Rail Outputs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4353EKA | 制造商:Maxim Integrated Products 功能描述:SOT23 LOW-COST ULTRA-LOW-POWER + - Rail/Tube |
| MAX4353EKA+ | 制造商:Maxim Integrated Products 功能描述:OP AMP DUAL GP R-R O/P 5.25V 8PIN SOT-23 - Rail/Tube |
| MAX4353EKA+T | 功能描述:高速運(yùn)算放大器 3V/5V 620uA 200MHz Single-Supply RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補(bǔ)償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX4353EKA-T | 功能描述:運(yùn)算放大器 - 運(yùn)放 Integrated Circuits (ICs) RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| MAX4353ESA | 功能描述:運(yùn)算放大器 - 運(yùn)放 Integrated Circuits (ICs) RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
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