Slide 1 Slide 2 Slide 3 Slide 4 Slide 5 Slide 6 Slide 7 Slide 8 Slide 9 Slide 10 Slide 11 Slide 12 Slide 13 Slide 14 Slide 15 Slide 16 Slide 17 Slide 18 Slide 19 Slide 20 Slide 21 Slide 22 Slide 23 Slide 24 Slide 25 Slide 26 Slide 27 Slide 28 Slide 29 Slide 30 Slide 31 Slide 32 Slide 33 Slide 34 Slide 35 Slide 36 Slide 37 Slide 38 Slide 39 Slide 40 Slide 41 Slide 42 Slide 43 Slide 44 Slide 45 Slide 46 Slide 47 Slide 48 Slide 49 Product List
OpAmp-Slide43

The most obvious trade off to achieve this improvement in the input range is the extra power required to bias the complementary differential pair. The offset voltage also changes over the common mode input range which causes distortion in the cross over region. Cross over distortion is a major consideration if the amp is used as a pre-amp in an ADC application. Also, the bias current will change over the common mode input range and in bipolar amplifiers it will change direction. Using an input bias correction resistor will minimize output error.

PTM Published on: 2009-01-26