Integrating analog/digital converter

Analog/digital converter, comprising:

• an amplifier wired as an integrator,
• a comparator provided downstream from the integrator,
• a time counter that counts the pulses of a pulse generator,
• a bistable element that drives an input network of the amplifier with at least one switch in such a way that, in a first of two positions, a current Ix proportional to an analog measured value is integrated, and, in a second of the two positions, a constant reference current Iref having opposite polarity to the current Ix is integrated in addition to the current Ix, whereby the switching of the bistable element from the first position to the second position is controlled by the time counter, and whereby the switching from the first position to the second position defines a switch-on time, and
• additional switching circuitry that also controls the switching of the bistable element from the first position to the second position, by displacing the switch-on time of the bistable element in each measurement cycle with respect to a fixed time-slot pattern of measurement cycles by a number of pulses of the pulse generator.

Analog/digital converter, comprising:

• an amplifier wired as an integrator,
• a comparator provided downstream from the integrator,
• a time counter that counts the pulses of a pulse generator,
• a bistable element that drives an input network of the amplifier with at least one switch in such a way that, in a first of two positions, a current Ix proportional to an analog measured value is integrated, and, in a second of the two positions, a constant reference current Iref having opposite polarity to the current Ix is integrated in addition to the current Ix,
• whereby the switching of the bistable element from the first position to the second position is controlled by the time counter, and whereby the switching from the first position to the second position defines a switch-on time,
• whereby the switching from the second position to the first position is controlled by an output signal of the comparator, and whereby the switching from the second position to the first position defines a switch-off time, and
• additional switching circuitry that also controls the switching of the bistable element from the second position to the first position as well as the switching of the bistable element from the first position to the second position, by displacing the switch-off time as well as the switch-on time of the bistable element, respectively, by a respective number of pulses of the pulse generator.