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The LT6375HMS is a unit gain differential amplifier that combines excellent DC accuracy, very high input common mode range, and a wide supply voltage range. The device consists of a precision op amp and a network of highly matched film resistors. It has excellent CMRR, very low gain error, and very low gain drift.

Comparing the LT6375HMS to existing differential amplifiers with high common-mode voltage ranges, the LT6375HMS' selectable resistor-divider ratio allows the user to achieve maximum SNR, accuracy, and speed for a specific input common-mode voltage range, thus providing superior system performance.

The op-amps at the heart of the LT6375HMS feature Over-The-Top® protected inputs for robust operation in environments with unpredictable voltage conditions.

The LT6375HMS is specified over the -40°C to 125°C temperature range and is available in a space-saving MSOP16 package.

LT6375HMS Features

±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 non-linearity

Wide supply voltage range: 3.3V to 50V

Rail-to-rail output

350µA supply current

Optional 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 mode: 20μA (DFN package only)

LT6375HMS Applications

High-end or low-end current sensing

Bidirectional wide common-mode range current sense

High-to-low voltage level switching

Precision differential amplifiers

Industrial data acquisition front-ends

Alternative to Isolated Circuits

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