Bandwidth and Slew Rate

For this test, the operational amplifier was configured as a non-inverting amplifier with a gain of 2. The Bode Diagram of this non-inverting amplifier was obtained, both at room temperature and at 115K. The bandwidth for small signal is similar at both temperatures (see Fig. 4).

Figure 4. Bode diagram at 295K and 115K.

However, the slew rate decreases with temperature. At 295K a value of 24.7 V/^s was measured (the datasheet value is 22 V/^s). At 115K the slew rate was only 13.0 V/^s.

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