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LT6375IDF#PBF Datasheet(PDF) 1 Page - Analog Devices |
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LT6375IDF#PBF Datasheet(HTML) 1 Page - Analog Devices |
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1 / 32 page  LT6375 1 6375fa For more information www.linear.com/LT6375 TYPICAL APPLICATION FEATURES DESCRIPTION ±270V Common Mode Voltage Difference Amplifier The LT®6375 is a unity-gain difference amplifier which combinesexcellentDCprecision,averyhighinputcommon mode range and a wide supply voltage range. It includes a precision op amp and a highly-matched thin film resistor network. It features excellent CMRR, extremely low gain error and extremely low gain drift. Comparing the LT6375 to existing difference amplifiers with high common mode voltage range, the selectable resistor divider ratios of the LT6375 offer superior system performance by allowing the user to achieve maximum SNR, precision and speed for a specific input common mode voltage range. The op amp at the core of the LT6375 has Over-The-Top® protected inputs which allow for robust operation in envi- ronments with unpredictable voltage conditions. See the Applications Information section for more details. The LT6375 is specified over the –40°C to 125°C tem- perature range and is available in space-saving MSOP16 and DFN14 packages. Precision Wide Voltage Range, Bidirectional Current Monitor APPLICATIONS n High Side or Low Side Current Sensing n Bidirectional Wide Common Mode Range Current Sensing n High Voltage to Low Voltage Level Translation n Precision Difference Amplifier n Industrial Data-Acquisition Front-Ends n Replacement for Isolation Circuits L , LT, LTC, LTM, Linear Technology, Over-The-Top and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. n ±270V Common Mode Voltage Range n 97dB Minimum CMRR (LT6375A) n 0.0035% (35ppm) Maximum Gain Error (LT6375A) n 1ppm/°C Maximum Gain Error Drift n 2ppm Maximum Gain Nonlinearity n Wide Supply Voltage Range: 3.3V to 50V n Rail-to-Rail Output n 350µA Supply Current n Selectable Internal Resistor Divider Ratio n 300µV Maximum Offset Voltage (LT6375A) n 575kHz –3dB Bandwidth (Resistor Divider = 7) n 375kHz –3dB Bandwidth (Resistor Divider = 20) n –40°C to 125°C Specified Temperature Range n Low Power Shutdown: 20μA (DFN Package Only) n Space-Saving MSOP and DFN Packages CMRR (µV/V = ppm) –40 –30 –20 –10 0 10 20 30 40 0 20 40 60 80 100 120 140 160 180 200 6375 TA01b 1248 UNITS FROM 4 RUNS VS = ±15V VIN = ±270V DIV = 25 Typical Distribution of CMRR – + V+ V– –15V VSOURCE+ = –270V TO 270V 15V OUT VOUT = ±10mV/mA REF –REFA –IN +IN –REFB 19k 38k 190k 190k 190k 23.75k –REFC +REFA +REFB +REFC 6375 TA01a 19k 38k SHDN 23.75k RC 10Ω RSENSE 10Ω 190k LOAD |
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