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MAX44251

更新时间： 2024-11-25 14:58:03
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亚德诺 - ADI 放大器运算放大器
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14页 1143K
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20V、超高精度、低噪声运算放大器

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MAX44251 数据手册

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MAX44250/MAX44251/  
MAX44252  
20V, Ultra-Precision, Low-Noise Op Amps  
General Description  
Benefits and Features  
● High Accuracy Enables Precision Signal Chain  
The MAX44250/MAX44251/MAX44252 are 20V, ultra-  
precision, low-noise, low-drift amplifiers that offer near-  
zero DC offset and drift through the use of patented auto-  
correlating zeroing techniques. This method constantly  
measures and compensates the input offset, eliminating  
drift over time and temperature and the effect of 1/f noise.  
These single, dual, and quad devices feature rail-to-rail  
outputs, operate from a single 2.7V to 20V supply or dual  
±1.35V to ±10V supplies and consume only 1.15mA per  
channel, while providing 5.9nV/√Hz input-referred voltage  
noise. The ICs are unity-gain stable with a gain-bandwidth  
product of 10MHz.  
Acquisition  
• 6μV Input Offset Voltage (max) at Room  
Temperature  
• TCV  
of 19nV/°C (max)  
OS  
• Low 5.9nV/√Hz Input-Referred Voltage Noise  
• 123nV in 0.1Hz to 10Hz  
P-P  
• 10MHz Gain-Bandwidth Product  
• Rail-to-Rail Output  
• Fast 400ns Settling Time  
● 2.7V to 20V Power-Supply Range Supports  
Wide Range of Sensors  
With excellent specifications such as offset voltage of  
● Integrated EMI Filter Reduces Impact of Radio  
6µV (max), drift of 19nV/°C (max), and 123nV  
noise in  
P-P  
Frequency Interference on Signal Chain Performance  
0.1Hz to 10Hz, the ICs are ideally suited for applications  
requiring ultra-low noise and DC precision such as inter-  
facing with pressure sensors, strain gauges, precision  
weight scales, and medical instrumentation.  
Applications  
● Strain Gauges  
● Pressure Transducers  
The ICs are available in 5-pin SOT23, 8-pin SOT23, 8-pin  
µMAX®, and 14-pin SO packages and are rated over the  
-40°C to +125°C temperature range.  
● Medical Instrumentation  
● Precision Instrumentation  
● Load Cell and Bridge Transducer Amplification  
Functional Diagrams appear at end of data sheet.  
Ordering Information appears at end of data sheet.  
Typical Operating Circuit  
3.3V  
+10V  
3V  
MAX44251  
V
OUT  
R
BUFFER  
R
1
MAX6126  
10V  
V
DD  
+10V  
-10V  
R
V
V
REF  
DD  
50R  
50R  
G
MAX44251  
R
V
BUFFER  
-10V  
IN+  
R
G
MICRO-  
G
PROCESSOR  
OUTPUT  
MAX11211  
V
+10V  
IN-  
V
SS  
R
BUFFER  
1.5V  
C
1
MAX44251  
-10V  
µMAX is a registered trademark of Maxim Integrated Products, Inc.  
19-6000; Rev 6; 1/17  
1234567...14

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