Voltage control
Regulators
Avalanche photodiodes
Charge pumps
Capacitors
Clocks
Integrated circuit modelling
Avalanche diodes
Capacitors
Charge pump circuits
CMOS integrated circuits
Integrated circuit design
Photodiodes
Surface mount technology
Voltage regulators
Adjustable bias circuit design
Charge pump circuit
Single-sided CMOS supply
Biasing
Avalanche photodiode
Load current
Pass-gate voltage regulator
Negative voltage regulator
Positive voltage output
Single control voltage
Bond pad
APD
Surface-mount capacitor
A charge pump circuit operating from a single-sided CMOS supply, capable of biasing avalanche photodiodes up to 40 V with load currents in the mA range is presented. This circuit introduces new design elements that overcome previously published limitations. These elements include pass-gate voltage regulators and a mechanism for linking the negative voltage regulator to the positive voltage output. This design allows linear adjustment of the output voltage from a single control voltage. The circuit has compact dimensions of 1.55 mm × 1 mm, including bond pads, which makes it suitable for hybrid integration in a single package with an APD and two surface-mount capacitors.