参数资料
| 型号： | MAX4454EUD+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/19页 |
| 文件大小： | 0K |
| 描述： | IC OP AMP R-R SS 14-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 96 |
| 放大器类型： | 电压反馈 |
| 电路数： | 4 |
| 输出类型： | 满摆幅 |
| 转换速率： | 95 V/µs |
| -3db带宽： | 200MHz |
| 电流 - 输入偏压： | 800nA |
| 电压 - 输入偏移： | 400µV |
| 电流 - 电源： | 620µA |
| 电流 - 输出 / 通道： | 22mA |
| 电压 - 电源，单路/双路(±)： | 2.7 V ~ 5.25 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 14-TSSOP |
| 包装： | 管件 |
| 产品目录页面： | 1390 (CN2011-ZH PDF) |
MAX4452/MAX4453/MAX4454/MAX4352/MAX4353/MAX4354
Low-Cost, +3V/+5V, 620A, 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
620A 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 (VEE -
0.1V) to (VCC - 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 (RISO) 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 (RF) 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 (RF) and input (RG)
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 (RF = RG) 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):
RS
RF RG
=
×
+
Figure 2. Optimal Isolation Resistor vs. Capacitive Load
VOUT
VIN
RBIN
RISO
RF
CL
RG
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
MAX4452/3/4
toc39
CLOAD (pF)
R
ISO
(
)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4454EUD+ | 功能描述:高速运算放大器 3V/5V 620uA 200MHz 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 |
| MAX4454EUD+T | 功能描述:高速运算放大器 3V/5V 620uA 200MHz 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 |
| MAX4454EUD-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 |
| MAX4455ECQ | 功能描述:视频开关 IC RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
| MAX4455ECQ+D | 功能描述:视频开关 IC RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
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