The LT1997-1 is a difference amplifier that can be used to amplify small differential signals while rejecting large common mode signals making it an ideal choice for current sense applications. It combines a precision operational amplifier with highly-matched resistors to form a one-chip solution to amplify and level shift voltages accurately using no external components. It comes with three standard pin-selectable gain options (10, 20 and 50), which can be further combined to form gains from 0.141 to 80 with accuracy of 0.012% (120ppm). The LT1997-1 also operates with input voltages between V– and V– + 76V (independent of V+), enabling robust operation in demanding industrial environments. Its excellent resistor matching results in a common mode rejection ratio of greater than 109dB (Gain = 10). The resistors maintain their excellent matching over temperature; the matching temperature coefficient is guaranteed less than 1ppm/°C. The resistors are extremely linear with voltage, resulting in a gain nonlinearity of less than 2ppm. The LT1997-1 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. Applications * High Side or Low Side Current Sensing * Bidirectional Wide Common Mode Range Current Sensing * High Voltage to Low Voltage Level Translation * Industrial Data-Acquisition Front-Ends * Replacement for Isolation Circuits * Differential to Single-Ended Conversion * Precision Gain: Up to 80V/V * Input Common Mode Voltage Range: V– to V– + 76V * 109dB Minimum CMRR (Gain = 10) * 0.012% (120ppm) Maximum Gain Error (Gain = 10) * 1ppm/°C Maximum Gain Error Drift * 2ppm Maximum Gain Nonlinearity https://elecena.pl/product/16952919/precision-high-voltage-gain-selectable-difference-current-sense-amplifier 2020-06-07 https://elecena.pl/product/16952919/precision-high-voltage-gain-selectable-difference-current-sense-amplifier 2025-01-19