The LT1997-2 is an attenuating (funnel) difference amplifier that can be used to translate large differential signals to the low voltage range compatible with ADCs. It combines a precision operational amplifier with highly-matched resistors to form a one-chip solution to attenuate and level shift voltages accurately using no external components. It comes with three standard pin-selectable gain options (0.1, 0.2 and 0.25), which can be further combined to form gains from 0.0455 to 0.55 (attenuations of 1.82 to 22) with accuracy of 0.006% (60ppm). The LT1997-2 also works across a very wide input common-mode voltage range (±255V), enabling robust operation in demanding industrial environments. Its excellent resistor matching results in a common mode rejection ratio of greater than 105dB. 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 LT1997-2 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 Voltage to Low Voltage Level Translation * ADC Driver * Bidirectional Wide Common Mode Range Voltage and Current Sensing * Industrial Data-Acquisition Front-Ends * Replacement for Isolation Circuits * Differential to Single-Ended Conversion * Precision Attenuation: Gain = 0.1, 0.2, 0.25 * ±255V Common Mode Voltage Range * 105dB Minimum CMRR (Gain = 0.1) * 0.006% (60ppm) Maximum Gain Error * 1ppm/°C Maximum Gain Error Drift * 2ppm Maximum Gain Nonlinearity * Wide Supply Voltage Range: 3.3V to 50V https://elecena.pl/product/16952596/precision-wide-voltage-range-gain-selectable-funnel-amplifier 2020-06-06 https://elecena.pl/product/16952596/precision-wide-voltage-range-gain-selectable-funnel-amplifier 2025-01-22