Description
The A7590D is a single-channel, isolated (floating) high-voltage regulator specifically designed for biasing Silicon Photomultipliers (SiPM). It provides a digitally-controlled adjustable output up to 80 V with a maximum current of 50 mA and a 1 mV setting resolution, together with a built-in temperature-compensation controller with programmable coefficient and remote temperature sensing.
Its floating output can be used as either a floating or a non-isolated supply, and a high-resolution monitoring chain (24-bit ADC) with optional PID stabilization delivers precise, real-time read-back of voltage, current and temperature — making it well suited to demanding SiPM readout in a compact, PCB-mountable module.
Key Features:
- Floating / isolated output: usable as a floating or non-isolated supply.
- Adjustable output: 2–75 V range (80 V / 50 mA class), with a programmable ramp starting from 1.2 V and 1 mV output step.
- Low noise: 560 µVrms at 50 mA.
- Digital and analog control: I²C, UART, USB and analog-voltage control.
- SiPM temperature compensation: HV compensation with remote temperature sensing and programmable coefficient.
- High-resolution monitoring: 100 µV voltage monitor, 100 nA current monitor, 0.05 °C temperature monitor.
- Programmable over-current protection.
- Open-source libraries: C/C++ and Python for control and integration.
- ZEUS software: control and monitor multiple devices from a single graphical interface.
- Flexible mounting: THT- and SMT-compatible footprint.
Technical Specifications:
- Output voltage: up to 80 V (2–75 V adjustable range)
- Output current: up to 50 mA
- Voltage setting resolution: 1 mV
- Output noise: 560 µVrms at 50 mA
- Ramp: programmable, starting from 1.2 V
- Output type: isolated / floating (usable also as non-isolated)
- Control: I²C, UART, USB, analog voltage
- Monitoring: voltage (100 µV), current (100 nA), temperature (0.05 °C) via 24-bit ADC
- Thermal compensation: programmable coefficient, remote temperature sensing
- Protection: programmable over-current
- Mounting: THT- and SMT-compatible footprint
Compared with the A7585D, the A7590D adds an isolated / floating output, a higher 50 mA current capability, higher-resolution monitoring (100 µV / 100 nA / 0.05 °C) and programmable over-current protection — while keeping the same digital/analog control philosophy, temperature compensation and ZEUS software support.
