Semiconductor junction capacitor in integrated method of construction and bootstrap circuit with such a capacitor

摘要

A Kapaxität in an integrated circuit is produced with conventional bipolar transistor technology. The spannungsbhängige capacity is provided by a poled in the reverse emitter-base junction (10), parasiltäre capacities such as collector-substrate (14), are separated from the emitter-base capacitance by the base-collector barrier layer (12) remains reverse-biased. The capacitance (T5) is, for example, a bootstrap driver circuit used (Figure 4), the bootstrap current of this transistor-like structure (T5) is supplied; the internal load capacitance leads to a substantially constant behavior of the circuit for changes to the driven load.