LT1997IDF-3#PBF

LT®1997-3 is a precision, wide voltage range gain selectable amplifier. It combines a precision operational amplifier with highly-matched resistors to form a one-chip solution for accurately amplifying voltages. Gains from -13 to +14 with accuracy of 0.006% (60ppm) can be achieved using no external components. The LT1997-3 is particularly well suited for use as a difference amplifier, where the excellent resistor matching results in a common mode rejection ratio of greater than 91dB. The resistors maintain their excellent matching over temperature; the matching temperature coefficient is guaranteed less than 1ppm/°C. Typical applications are 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.

• Pin configurable as a difference amplifier, inverting amplifier or noninverting amplifier
• Wide supply voltage range from 3.3V to 50V
• Rail-to-rail output, low-power shutdown is 20µA
• Gain error is ±0.001% typ (G=1, TA=25°C, V+=15V, V–=–15V, VCM=VOUT=VREF=VREF1=VREF2=0V)
• Gain drift vs temperature is ±0.2ppm/°C typ (VOUT=±10V)
• Op-amp offset voltage is ±20µV typ (V– <lt/> VCMOP <lt/> V+ – 1.75V, TA=25°C)
• Op-amp offset voltage drift is ±0.5µV/°C typ ( V– <lt/> VCMOP <lt/> V+ – 1.75V)
• Slew rate is 0.75V/µs typical (∆VOUT=±5V)
• 14-lead plastic DFN package
• Temperature rating range from -40°C to 85°C

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party