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LT6375: ±270V Common Mode Voltage Difference Amplifier Data Sheet12/18/2015PDF1M
Overview
Features and Benefits
- ±270V Common Mode Voltage Range
- 97dB Minimum CMRR (LT6375A)
- 0.0035% (35ppm) Maximum Gain Error (LT6375A)
- 1ppm/°C Maximum Gain Error Drift
- 2ppm Maximum Gain Nonlinearity
- Wide Supply Voltage Range: 3.3V to 50V
- Rail-to-Rail Output
- 350μA Supply Current
- Selectable Internal Resistor Divider Ratio
- 300μV Maximum Offset Voltage (LT6375A)
- 575kHz –3dB Bandwidth (Resistor Divider = 7)
- 375kHz –3dB Bandwidth (Resistor Divider = 20)
- –40°C to 125°C Specified Temperature Range
- Low Power Shutdown: 20μA (DFN Package Only)
- Space-Saving MSOP and DFN Packages
Product Details
The LT6375 is a unity-gain difference amplifier which combines excellent DC precision, a very high input common 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 environments with unpredictable voltage conditions. See the Applications Information section for more details.
The LT6375 is specified over the –40°C to 125°C temperature range and is available in space-saving MSOP16 and DFN14 packages.
Applications
- High Side or Low Side Current Sensing
- Bidirectional Wide Common Mode Range Current Sensing
- High Voltage to Low Voltage Level Translation
- Precision Difference Amplifier
- Industrial Data-Acquisition Front-Ends
- Replacement for Isolation Circuits
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Documentation & Resources
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R515 Reliability Data3/26/2018PDF35 K
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DC2443 - Demo Manual11/2/2015PDF764K
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Wide Common Mode Range Current Sensing10/15/2018
Tools & Simulations
LTspice
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Models for the following parts are available in LTspice:
LT6375
Design Tools
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PCN-PDN Information
Support & Discussions
LT6375 Discussions
Sample & Buy
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.