Datasheet LT6376 (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | ±230V Common Mode Voltage G = 10 Difference Amplifier |
| Páginas / Página | 30 / 1 — FEATURES. DESCRIPTION. APPLICATIONS. TYPICAL APPLICATION. Precision Wide … |
| Formato / tamaño de archivo | PDF / 2.1 Mb |
| Idioma del documento | Inglés |
FEATURES. DESCRIPTION. APPLICATIONS. TYPICAL APPLICATION. Precision Wide Voltage Range, Bidirectional Current Monitor
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LT6376 ±230V Common Mode Voltage G = 10 Difference Amplifier
FEATURES DESCRIPTION
n ±230V Common Mode Voltage Range The LT®6376 is a gain of 10 difference amplifier which n 105nV/√Hz Input Referred Noise (Resistor combines excellent DC precision, a very high input Divider = 3.1) common mode range and a wide supply voltage range. n 90dB Minimum CMRR It includes a precision op amp and a highly-matched n 0.0075% (75ppm) Maximum Gain Error thin film resistor network. It features excellent CMRR, n 1ppm/°C Maximum Gain Error Drift extremely low gain error and extremely low gain drift. n 2ppm Maximum Gain Nonlinearity Comparing the LT6376 to existing difference amplifiers n Wide Supply Voltage Range: 3.3V to 50V with high common mode voltage range, the gain of 10 n Rail-to-Rail Output and selectable resistor divider ratios of the LT6376 offer n 350µA Supply Current superior system performance by al owing the user to n Selectable Internal Resistor Divider Ratio achieve low input referred noise with maximum preci- n 200µV Maximum Input Offset Voltage sion and speed. n 300kHz –3dB Bandwidth (Resistor Divider = 3.1) n 160kHz –3dB Bandwidth (Resistor Divider = 10.3) The op amp at the core of the LT6376 has Over-The-Top® n –40°C to 125°C Specified Temperature Range protected inputs which allow for robust operation in envi- n Low Power Shutdown: 20μA (DFN Package Only) ronments with unpredictable voltage conditions. See the n Space-Saving MSOP and DFN Packages Applications Information section for more details. The LT6376 is specified over the –40°C to 125°C tem-
APPLICATIONS
perature range and is available in space-saving MSOP16 n High Side or Low Side Current Sensing and DFN14 packages. n Bidirectional Wide Common Mode Range Current Sensing All registered trademarks and trademarks are the property of their respective owners. n High Voltage to Low Voltage Level Translation n Precision Difference Amplifier n Replacement for Isolation Circuits
TYPICAL APPLICATION Precision Wide Voltage Range, Bidirectional Current Monitor Typical Distribution of CMRR
25V 120 –REFA –REFB –REFC V+ 638 UNITS VS = ±25V FROM TWO RUNS VIN = ±230V 19k 38k 23.75k 100
DF14(12)
DIV = 10.3 760k VSOURCE+ = –230V TO 230V 80 –IN 76k – R 60 SENSE OUT RC VOUT = ±10mV/mA 1Ω 1Ω +IN 76k + 40 NUMBER OF UNITS LOAD REF 20 760k 19k 38k 23.75k 0 +REFA +REFB +REFC SHDN V– –40 –30 –20 –10 0 10 20 30 40 6376 TA01a CMRR (µV/V = ppm) –25V 6376 TA01b 6376f For more information www.linear.com/LT6376 1 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION E LECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM APPLICATIONS INFORMATION TYPICAL APPLICATIONS PACKAGE DESCRIPTION TYPICAL APPLICATION RELATED PARTS
FEATURES DESCRIPTION
n ±230V Common Mode Voltage Range The LT®6376 is a gain of 10 difference amplifier which n 105nV/√Hz Input Referred Noise (Resistor combines excellent DC precision, a very high input Divider = 3.1) common mode range and a wide supply voltage range. n 90dB Minimum CMRR It includes a precision op amp and a highly-matched n 0.0075% (75ppm) Maximum Gain Error thin film resistor network. It features excellent CMRR, n 1ppm/°C Maximum Gain Error Drift extremely low gain error and extremely low gain drift. n 2ppm Maximum Gain Nonlinearity Comparing the LT6376 to existing difference amplifiers n Wide Supply Voltage Range: 3.3V to 50V with high common mode voltage range, the gain of 10 n Rail-to-Rail Output and selectable resistor divider ratios of the LT6376 offer n 350µA Supply Current superior system performance by al owing the user to n Selectable Internal Resistor Divider Ratio achieve low input referred noise with maximum preci- n 200µV Maximum Input Offset Voltage sion and speed. n 300kHz –3dB Bandwidth (Resistor Divider = 3.1) n 160kHz –3dB Bandwidth (Resistor Divider = 10.3) The op amp at the core of the LT6376 has Over-The-Top® n –40°C to 125°C Specified Temperature Range protected inputs which allow for robust operation in envi- n Low Power Shutdown: 20μA (DFN Package Only) ronments with unpredictable voltage conditions. See the n Space-Saving MSOP and DFN Packages Applications Information section for more details. The LT6376 is specified over the –40°C to 125°C tem-
APPLICATIONS
perature range and is available in space-saving MSOP16 n High Side or Low Side Current Sensing and DFN14 packages. n Bidirectional Wide Common Mode Range Current Sensing All registered trademarks and trademarks are the property of their respective owners. n High Voltage to Low Voltage Level Translation n Precision Difference Amplifier n Replacement for Isolation Circuits
TYPICAL APPLICATION Precision Wide Voltage Range, Bidirectional Current Monitor Typical Distribution of CMRR
25V 120 –REFA –REFB –REFC V+ 638 UNITS VS = ±25V FROM TWO RUNS VIN = ±230V 19k 38k 23.75k 100
DF14(12)
DIV = 10.3 760k VSOURCE+ = –230V TO 230V 80 –IN 76k – R 60 SENSE OUT RC VOUT = ±10mV/mA 1Ω 1Ω +IN 76k + 40 NUMBER OF UNITS LOAD REF 20 760k 19k 38k 23.75k 0 +REFA +REFB +REFC SHDN V– –40 –30 –20 –10 0 10 20 30 40 6376 TA01a CMRR (µV/V = ppm) –25V 6376 TA01b 6376f For more information www.linear.com/LT6376 1 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION E LECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM APPLICATIONS INFORMATION TYPICAL APPLICATIONS PACKAGE DESCRIPTION TYPICAL APPLICATION RELATED PARTS