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LT1997HDF-3#PBF

更新时间： 2024-11-04 19:49:47
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
38页 3203K
描述
LT1997-3 - Precision, Wide Voltage Range Gain Selectable Amplifier; Package: DFN; Pins: 14; Temperature Range: -40°C to 125°C

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中文翻译

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LT1997HDF-3#PBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：DFN针数：14
Reach Compliance Code：compliant风险等级：8.46
Base Number Matches：1

LT1997HDF-3#PBF 数据手册

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LT1997-3  
Precision, Wide Voltage  
Range Gain Selectable  
Amplifier  
FEATURES  
DESCRIPTION  
TheLT®1997-3combinesaprecisionoperationalamplifier  
with highly-matched resistors to form a one-chip solution  
for accurately amplifying voltages. Gains from –13 to +14  
with accuracy of 0.006% (60ppm) can be achieved using  
noexternalcomponents. TheLT1997-3isparticularlywell  
suited for use as a difference amplifier, where the excellent  
resistor matching results in a common mode rejection  
ratio of greater than 91dB.  
n
Pin Configurable as a Difference Amplifier, Inverting  
Amplifier or Noninverting Amplifier  
n
91dB Minimum DC CMRR (Gain = 1)  
n
65dB AC CMRR (at 100kHz, Gain = 1)  
n
0.006% (60ppm) Maximum Gain Error (Gain = 1)  
n
1ppm/°C Maximum Gain Error Drift  
n
2ppm Maximum Gain Nonlinearity  
n
160V Common Mode Voltage Range  
n
Wide Supply Voltage Range: 3.3V to 50V  
Theamplifierfeaturesa60μVmaximuminputoffsetvoltage  
anda–3dBbandwidthof1.1MHz(Gain=1).TheLT1997-3  
operates from any supply voltage from 3.3V to 50V and  
draws only 350μA supply current. The output typically  
swings to within 100mV of either supply rail.  
n
Rail-to-Rail Output  
350µA Supply Current  
n
n
60µV Maximum Op Amp Offset Voltage  
n
1.1MHz –3dB Bandwidth (Gain = 1)  
n
Low-Power Shutdown: 20µA  
n
The resistors maintain their excellent matching over  
temperature; the matching temperature coefficient is  
guaranteedlessthan1ppm/°C.Theresistorsareextremely  
linear with voltage, resulting in a gain nonlinearity of less  
than 2ppm.  
Space-Saving MSOP and DFN Packages  
APPLICATIONS  
n
High Side or Low Side Current Sensing  
n
Bidirectional Wide Common Mode Range Current  
The LT1997-3 is fully specified at 5V and 15V supplies  
and from –40°C to 125°C. The device is available in space  
saving 16-lead MSOP and 4mm × 4mm DFN14 packages.  
Sensing  
n
n
n
n
High Voltage to Low Voltage Level Translation  
Industrial Data-Acquisition Front-Ends  
Replacement for Isolation Circuits  
All registered trademarks and trademarks are the property of their respective owners.  
Differential to Single-Ended Conversion  
TYPICAL APPLICATION  
Typical Distribution of CMRR (G = 1)  
Gain = 1 Difference Amplifier  
ꢀꢁꢂꢂ  
V
= –28V TO 26.5V  
15V  
SOURCE  
ꢀ
ꢂ ꢃꢄꢀ  
ꢁ
ꢀ
ꢅꢆ  
ꢂ ꢇꢈꢉꢀ ꢊꢋ ꢌꢈꢍꢎꢄꢀ  
+
–INA –INB –INC  
V
LT1997-3  
ꢀꢁꢁꢁ  
ꢀꢁꢁ  
ꢀꢁꢁ  
ꢀꢁꢁ  
ꢀꢁꢁ  
ꢀ
ꢏꢍꢈꢄ ꢐꢑꢒꢊꢁ  
2.5k  
7.5k  
ꢓRꢋꢆ ꢔ Rꢐꢑꢁ  
22.5k  
22.5k  
22.5k  
–
+
OUT  
R
R
C
SENSE  
V
OUT  
= 1ꢀV/ꢀA  
1Ω  
1Ω  
7.5k  
2.5k  
45k  
45k  
REF2  
REF1  
LOAD  
ꢀꢁꢂ  
ꢀꢁꢂ  
ꢀꢁꢂ  
ꢀ
ꢀꢁ  
ꢀꢁ  
ꢀꢁ  
–
V
ꢀꢁRR ꢂꢃꢄꢅꢄ ꢆ ꢇꢇꢈꢉ  
+INA +INB +INC  
SHDN  
ꢀꢁꢁꢂꢃ ꢄAꢅꢀꢆ  
19973 TA01a  
–15V  
Rev A  
1
Document Feedback  
For more information www.analog.com  
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