Analog Devices Inc. LT1997 Wide Voltage Gain Selectable Amplifier is a one-chip solution for accurately amplifying voltages. The LT1997 combines a precision operational amplifier with highly-matched resistors. Gains from –13 to +14 with an accuracy of 0.006% (60ppm) can be achieved using no external components. The LT1997 is ideal for use as a difference amplifier, where the excellent resistor matching results in a common mode rejection ratio of greater than 91dB.