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參數(shù)資料
| 型號(hào)： | MAX4040EUA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Single/Dual/Quad, Low-Cost, SOT23, Micropower Rail-to-Rail I/O Op Amps |
| 中文描述： | OP-AMP, 5000 uV OFFSET-MAX, 0.09 MHz BAND WIDTH, PDSO8 |
| 封裝： | MO-187C-AA, MICRO MAX PACKAGE-8 |
| 文件頁數(shù)： | 9/16頁 |
| 文件大?。?/td> | 199K |
| 代理商： | MAX4040EUA |
M
S ingle/Dual/Quad, Low-Cost, S OT 23,
Mic ropower, Rail-to-Rail I/O Op Amps
_______________________________________________________________________________________
9
The MAX4040–MAX4044 family’s inputs are protected
from large differential input voltages by internal 2.2k
series resistors and back-to-back triple-diode stacks
across the inputs (Figure 2). For differential input volt-
ages (much less than 1.8V), input resistance is typically
45M
. For differential input voltages greater than 1.8V,
input resistance is around 4.4k
, and the input bias
current can be approximated by the following equation:
I
BIAS
= (V
DIFF
- 1.8V) / 4.4k
In the region where the differential input voltage
approaches 1.8V, the input resistance decreases expo-
nentially from 45M
to 4.4k
as the diode block begins
conducting. Conversely, the bias current increases with
the same curve.
Rail-to-Rail Output Stage
The MAX4040–MAX4044 output stage can drive up to a
25k
load and still swing to within 60mV of the rails.
Figure 3 shows the output voltage swing of a MAX4040
configured as a unity-gain buffer, powered from a single
+4.0V supply voltage. The output for this setup typically
swings from (V
EE
+ 10mV) to (V
CC
- 10mV) with a 100k
load.
Applic ations Information
Power-S upply Considerations
The MAX4040–MAX4044 operate from a single +2.4V to
+5.5V supply (or dual ±1.2V to ±2.75V supplies) and
consume only 10μA of supply current per amplifier. A
high power-supply rejection ratio of 85dB allows the
amplifiers to be powered directly off a decaying battery
voltage, simplifying design and extending battery life.
Power-Up S ettling T ime
The MAX4040–MAX4044 typically require 200μs to
power up after V
CC
is stable. During this start-up time,
the output is indeterminant. The application circuit
should allow for this initial delay.
R3
R3 = R1 R2
R1
R2
MAX4040–
MAX4044
V
IN
Figure 1b. Minimizing Offset Error Due to Input Bias Current
(Inverting)
2.2k
2.2k
IN-
IN+
Figure 2. Input Protection Circuit
R3
V
IN
R3 = R1 R2
R1
R2
MAX4040–
MAX4044
Figure 1a. Minimizing Offset Error Due to Input Bias Current
(Noninverting)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX4041EUA | Single/Dual/Quad, Low-Cost, SOT23, Micropower Rail-to-Rail I/O Op Amps |
| MAX4040ESA | Single/Dual/Quad, Low-Cost, SOT23, Micropower Rail-to-Rail I/O Op Amps |
| MAX4040 | Replaced by TMS320VC5506 : Digital Signal Processors 100-LQFP |
| MAX4041 | Replaced by TMS320VC5506 : Digital Signal Processors 100-LQFP |
| MAX4041ESA | Replaced by TMS320VC5506 : Digital Signal Processors 132-BQFP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4040EUA+ | 功能描述:運(yùn)算放大器 - 運(yùn)放 uPower Rail-Rail 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 |
| MAX4040EUA+T | 功能描述:運(yùn)算放大器 - 運(yùn)放 uPower Rail-Rail 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 |
| MAX4040EUA-T | 功能描述:運(yùn)算放大器 - 運(yùn)放 uPower Rail-Rail 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 |
| MAX4040EUK | 制造商:Maxim Integrated Products 功能描述:LOW-COST MICROPOWER RAIL-TO-RAIL - Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
| MAX4040EUK+ | 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:OP AMP SGL GP R-R I/O 2.75V/5.5V 5PIN SOT-23 - Rail/Tube |
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