The AHVA2000V20MA is a benchtop high voltage amplifier designed to amplify a low-voltage analog input signal into a high voltage output, sourcing or sinking up to 20mA. It integrates a high voltage AC-DC converter that accepts standard 110VAC or 220VAC line input and produces a 0V to 2kV rail, eliminating the need for an external high voltage power supply.
The output voltage of the AHVA2000V20MA can swing nearly the full 0V to 2kV span, with a typical slew rate of 200V/µs and a small-signal bandwidth up to 20kHz, making it suitable for both static high voltage biasing and dynamic piezo actuation. An on-board LCD indicates whether the amplifier is operating properly, allowing engineers to confirm functional status at a glance during bench testing.
Compared with ATI's OEM-style AHVA-series modules (such as AHVA1KV2X20MA, AHVA2KV2X20MA, and AHVAHS2KV2X20MA), the AHVA2000V20MA is a turnkey benchtop instrument: it ships in a complete enclosure with AC line input, status display, and built-in high voltage rail, ready to use in any standard laboratory environment.
The AHVA2000V20MA is widely used in research, semiconductor, and instrumentation environments where a stable 0–2kV bench-side high voltage source is required:
• Driving piezoelectric actuators, transducers, and stack assemblies
• Dielectric breakdown and capacitor testing
• MEMS device characterization
• Electrostatic chuck (ESC) biasing in semiconductor wafer processing
• Mass spectrometer ion-optics and electrode biasing
• Electrophoresis power supply for lab analysis
• Electro-optic modulator (EOM) and Pockels cell biasing
• General-purpose high voltage instrumentation on the lab bench
Q1: What is the output voltage and current rating of the AHVA2000V20MA?
AHVA2000V20MA delivers a unipolar output voltage from 0V to 2kV (2000V) at up to 20mA of output current, with a slew rate of 200V/µs.
Q2: Does the AHVA2000V20MA require an external high voltage power supply?
No. The AHVA2000V20MA has a built-in high voltage AC-DC converter and runs directly from 110VAC ±10% 60Hz or 220VAC ±10% 50Hz line voltage, so no external high voltage supply is required.
Q3: What are the bandwidth and slew rate of the AHVA2000V20MA?
The AHVA2000V20MA features a small-signal bandwidth of up to 20kHz and a slew rate of 200V/µs, suitable for fast piezo actuation and other dynamic high voltage applications.
Q4: What capacitive load can the AHVA2000V20MA drive?
The maximum drivable capacitance depends on the required output swing and frequency, following I = C × dV/dt. As an example, at 20mA output and a full 2kV peak-to-peak sinusoid at 1kHz, the amplifier can drive on the order of 1.6 nF. For larger capacitive loads, reduce the frequency or output amplitude accordingly.
Q5: What are typical applications of the AHVA2000V20MA?
Typical applications include driving piezoelectric actuators and transducers, dielectric and capacitor testing, MEMS testing, electrostatic chuck biasing, mass spectrometer ion-optics, electrophoresis, and general laboratory high voltage instrumentation.
Q6: How does the AHVA2000V20MA differ from ATI's other AHVA-series amplifiers?
AHVA2000V20MA is a complete benchtop instrument with integrated AC-DC high voltage converter, LCD status display, and chassis. ATI's other AHVA-series models (such as AHVA1KV2X20MA, AHVA2KV2X20MA, and AHVAN2R5KV20MA) are OEM-style modules that typically require an external high voltage power supply and host system.
