Measured output pulse amplitudes under different temperature as functions of pulse-repetition frequency between 40 kHz and 25 MHz. From the bottom up, the biases for pulse generator are VCC1 = 3.3 V, VCC2 = 3.3 V, and VCC3 = 14 V and VCC1 = 3.3 V, VCC2 = 3.3 V, and VCC3 = 6 V.