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參數(shù)資料
| 型號(hào)： | MAX4289 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 1.0V Micropower, SOT23, Operational Amplifier |
| 中文描述： | 1.0V、微功耗、SOT23封裝、運(yùn)算放大器 |
| 文件頁數(shù)： | 6/9頁 |
| 文件大小： | 280K |
| 代理商： | MAX4289 |
M
Detailed Description
The MAX4289 consumes ultra-low power (9μA supply
current typically) and has a rail-to-rail output stage that
is specifically designed for low-voltage operation. The
input common-mode voltage range extends from V
CC
-
0.2V to ground, although full rail-to-rail input range is
possible with degraded performance. The input offset
voltage is typically 200μV. Low-operating supply volt-
age, low supply current, and rail-to-rail outputs make
this operational amplifier an excellent choice for preci-
sion or general-purpose, low-voltage, battery-powered
systems.
Rail-to-Rail Output Stage
The MAX4289 output stage can drive a 5k
load and
still swing to within 7mV of the rails. Figure 1 shows the
output voltage swing of the MAX4289 configured as a
unity-gain buffer, powered from a single 2V supply volt-
age. The output for this setup typically swings from
+0.4mV to (V
CC
- 0.2mV) with a 100k
load.
Applications Information
Power-Supply Considerations
The MAX4289 operates from a single 1.0V to 5.5V supply
and consumes only 9μA of supply current. A high power-
supply rejection ratio of 75dB allows the amplifier to be
powered directly off a decaying battery voltage, simplify-
ing design and extending battery life. The MAX4289 is
ideally suited for single-cell battery-powered systems.
Figures 2 and 3 show the supply current and PSRR as a
function of supply voltage and temperature.
1.0V Micropower, SOT23, Operational Amplifier
6
_______________________________________________________________________________________
Pin Description
PIN
SO
1, 5, 8
2
3
4
6
7
SOT23
5
4
3
2
1
6
NAME
FUNCTION
N.C.
IN-
IN+
GND
OUT
V
CC
No Connection. Not internally connected.
Inverting Input
Noninverting Input
Ground
Amplifier Output
Positive Supply. Bypass with a 0.1μF capacitor to GND.
200
μ
s/div
IN
500mV/div
OUT
500mV/div
V
IN
= 2.0V
f
IN
= 1kHz
R
L
= 100k
Figure 1. Rail-to-Rail Input/Output Voltage Range
0
5
15
10
20
25
0
2
1
3
4
5
6
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
S
μ
A
T
A
= +85
°
C
T
A
= +25
°
C
T
A
= -40
°
C
Figure 2. I
CC
vs. V
CC
Over the Temperature Range
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4289ESA | 功能描述:運(yùn)算放大器 - 運(yùn)放 1.0V uPower 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 |
| MAX4289ESA+ | 功能描述:運(yùn)算放大器 - 運(yùn)放 1.0V uPower 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 |
| MAX4289ESA+T | 功能描述:運(yùn)算放大器 - 運(yùn)放 1.0V uPower 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 |
| MAX4289ESA-T | 功能描述:運(yùn)算放大器 - 運(yùn)放 1.0V uPower 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 |
| MAX4289EUT | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
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