The DS1842 integrates the discrete high-voltage components necessary for avalanche photodiode (APD) bias and monitor applications. A switch FET is used in conjunction with an external DC-DC controller ...

Current through R G1 depends on a voltage, V PC, with respect to the negative supply, V EE, applied to the power-control input at Pin 4. You can implement V PC with a voltage divider, a reference, or ...

Bias circuits for class AB buffers (Fig. 1a) can take several forms. One alternative (not necessarily the best) is usually called the “old VBE doubler” (Fig. 1b). The main purpose of these circuits is ...