High Voltage Amplifiers

Q: Which cable and connector do I need?

The high-voltage output uses BNC on models up to 500 V and SHV above 500 V. The AHVAPN series uses banana jacks. Signal inputs are Mini-BNC on single-polarity models and BNC on the bipolar AHVAPN series. SHV and BNC do not mate, and that is deliberate. SHV has a thick protruding insulator so a high-voltage cable cannot be plugged into a low-voltage socket by mistake. That is a safety feature, not a fault. You do not need to order cables separately — the correct ones ship with the amplifier.

Q: What is included when I order? Do I get a power supply?

Every unit ships with a probe and cable set as standard: a high-voltage probe, a low-voltage probe, high-voltage and low-voltage cables, and a terminal block for monitoring the input signal. The cables supplied match the connector type of the model you order — BNC, SHV or banana — so nothing extra needs sourcing. AHVAPN1KV20MABN and AHVAPN1800V20MABN can also be ordered with a matching 24 V power supply — that option is why those two show a price range. All other models need a 24 V supply of your own.

A high voltage amplifier takes a small control signal and reproduces it at high voltage. Use one when your load has to move, switch or follow a waveform — a piezo actuator, a MEMS mirror, an electro-optic modulator. If it only needs to sit at a fixed voltage, a power supply is enough.

ATI builds these as compact modules you can mount inside your equipment, from 100 V to 2.5 kV, starting at $340. The high-voltage supply is already built in, so the module runs from an ordinary 24 V rail. Bench-top amplifiers with similar output typically cost several times more and sit outside your system.

Showing 1–12 of 28 resultsSorted by price: low to high

SKU	Output Voltage	Max. Current	Slew Rate	Output Connector	Dimensions	Price	Stock
AHVA100V2X5MA	10V~100V	5 mA	100 V/us	SHV	176.5×147.0×41.2	$340.00	Made to Order
AHVA100V2X10MA	10V~100V	10 mA	100 V/us	SHV	176.5×147.0×41.2	$350.00	Made to Order
AHVA100V2X20MA	10V~100V	20 mA	100 V/us	SHV	176.5×147.0×41.2	$360.00	Made to Order
AHVA100V2X50MA	10V~100V	50 mA	100 V/us	SHV	176.5×147.0×41.2	$370.00	Made to Order
AHVA100V2X100MA	10V~100V	100 mA	100 V/us	SHV	176.5×147.0×41.2	$380.00	Made to Order
AHVA250V2X5MA	10V~250V	5 mA	100 V/us	SHV	176.5×147.0×41.2	$400.00	Made to Order
AHVA250V2X10MA	10V~250V	10 mA	100 V/us	SHV	176.5×147.0×41.2	$410.00	Made to Order
AHVA250V2X20MA	10V~250V	20 mA	100 V/us	SHV	176.5×147.0×41.2	$420.00	Made to Order
AHVA250V2X40MA	10V~250V	40 mA	100 V/us	SHV	176.5×147.0×41.2	$430.00	Made to Order
AHVA250V2X100MA	10V~250V	100 mA	100 V/us	SHV	176.5×147.0×41.2	$440.00	Made to Order
AHVA500V2X5MA	10V~500V	5 mA	100 V/us	SHV	176.5×147.0×41.2	$500.00	2
AHVA500V2X10MA	10V~500V	10 mA	100 V/us	SHV	176.5×147.0×41.2	$520.00	Made to Order

Our Delivery Promise

Fast, flexible fulfillment from San Jose, California, USA — shipped worldwide.

Fast in-stock shipping — In-stock orders ship within 1–2 business days after confirmation and quality check.
Made-to-order production — Most models in this category are built to order. Contact us for the current lead time before you plan your schedule.
Worldwide shipping — Shipped from San Jose to customers worldwide.
Flexible carrier options — UPS, FedEx, DHL, USPS, freight forwarders, or your preferred logistics partners.
Clear shipment visibility — Tracking provided after dispatch to support your receiving and production planning.

Which series do I need?

Four series, sorted by what your load needs. Pick one, then use the filter above for the exact voltage and current.

Series	Output	Max current	Speed	Bandwidth	Choose this if…
AHVA 21 models · $340–$1,400	+100 V to +2 kV positive	up to 100 mA	100–150 V/µs	10 kHz	This is the one most people need. Five voltage levels, five current levels. Best for driving piezo actuators and holding a position. Highest current in the range at 100 mA.
AHVAPN 3 models · from $1,500	−2 kV to +2 kV bipolar, swings through zero	20 mA	2000 V/µs	15 kHz	You need speed, or you need both polarities. Square waves, fast steps, optical switching. 20× faster than the AHVA series, and the output crosses zero with no switching hardware.
AHVAN 3 models · $1,099–$2,600	−1 kV to −2.5 kV negative	20 mA	100 V/µs	10 kHz	You only need negative voltage. Photomultipliers, ion optics, electrostatic bias. Goes to −2.5 kV — the widest single-polarity swing we make.
AHVA2000V20MA benchtop · $3,500	+2 kV positive	20 mA	200 V/µs	20 kHz	You want a finished instrument. Plugs into the wall — no 24 V supply to arrange. Good for labs and one-off experiments, where 20 kHz gives the widest bandwidth in the range.

Also worth knowing:

SMA: AHVA1KV2X20MASMA is identical to AHVA1KV2X20MA except the two signal ports use SMA instead of Mini-BNC. The high-voltage output is SHV on both.
Custom: Different voltage, current or connector can be built to order. Tell us what you need.

How much current do I need?

This is the question people get wrong most often. Piezo actuators and most high-voltage loads are capacitors — the faster you change the voltage, the more current they pull. Voltage rating alone will not tell you which model to buy. Once you know the current you need, filter by Max Output Current to see the models that fit.

Current = Capacitance × Voltage × Frequency × 6.3

Your load	Voltage swing	Frequency	Current needed	Model that fits
10 nF piezo	200 V	10 Hz	~0.1 mA	AHVA250V2X5MA
10 nF piezo	200 V	1 kHz	~13 mA	AHVA250V2X20MA
100 nF piezo stack	200 V	1 kHz	~126 mA	contact us
1 nF EO modulator	2 kV	1 kHz	~13 mA	AHVA2KV2X20MA

Rule of thumb: 10× the frequency means 10× the current. If your load is large or fast, current will decide your model — not voltage. Send us your capacitance, voltage and frequency and we will tell you which model works.

Why buy from ATI

Seven reasons customers pick these over bench-top amplifiers.

The high-voltage supply is already inside. Plug in 24 V and you get 2 kV out. There is no separate high-voltage power supply to buy, wire or keep safe. For most customers this is the deciding factor.
It fits inside your product. The modules are 176 × 147 × 41 mm and weigh 1 kg. Bench-top amplifiers sit on a table and stay there. These go into the instrument you are building.
Prices are published. From $340 to $3,500, listed on every product page. No quote request needed to find out whether it fits your budget.
Cables and probes are in the box. A high-voltage probe, a low-voltage probe, matching high-voltage and low-voltage cables and a terminal block all ship as standard, with the connectors already correct for the model you ordered. Most suppliers sell these separately, and a high-voltage probe is not a cheap accessory.
28 models, so you buy what you need. Five voltage levels and five current levels. You are not paying for headroom you will never use.
Connectors are rated with margin. Models up to 500 V use BNC rated at 600 V. Models above 500 V use SHV rated at 3 kV. Nothing runs at the edge of its connector rating.
Protection is standard, not an option. Over-voltage and under-voltage lockout, ESD protection, over-temperature shutdown, soft start and current limiting on every model. Soft start matters for piezo — it prevents the power-up jolt that cracks stacks.

What people use these for

Anything that needs a controlled voltage of hundreds or thousands of volts, changing over time.

Piezo actuators and stacks — the most common use. Positioning, dispensing, valve control, active damping.
Nanopositioning — piezo stages, fast steering mirrors, adaptive optics. Low noise matters here as much as voltage.
Electro-optic modulators and Pockels cells — Q-switching, pulse picking, polarisation control. Use the fast AHVAPN series.
MEMS devices — micromirrors, microvalves, resonators. Usually low current, so the 5 mA models are enough.
Ultrasonic transducers — medical imaging, non-destructive testing, ultrasonic welding.
Electrostatic and dielectric testing — breakdown testing, electrostatic chucks, controlled field generation.
Ion and electron beams — deflection plates, mass spectrometry optics, plasma bias. AHVAN for fixed negative bias, AHVAPN where the field must reverse.
Laboratory research — if you need a bench instrument rather than a module, the AHVA2000V20MA plugs straight into the wall.

Questions we get asked

What is the difference between an amplifier and a high voltage power supply?

A power supply holds one voltage. An amplifier follows your control signal and changes with it. If your load needs to move or switch, you need an amplifier. If it just needs a steady voltage, buy a power supply instead — it costs less.

Do I need a separate high voltage power supply?

No. Every module has one built in. Give it 24 V and it does the rest. The benchtop AHVA2000V20MA plugs into a wall socket.

Which cable and connector do I need?

The high-voltage output uses BNC on models up to 500 V and SHV above 500 V. The AHVAPN series uses banana jacks. Signal inputs are Mini-BNC on single-polarity models and BNC on the bipolar AHVAPN series.

SHV and BNC do not mate, and that is deliberate. SHV has a thick protruding insulator so a high-voltage cable cannot be plugged into a low-voltage socket by mistake. That is a safety feature, not a fault.

You do not need to order cables separately — the correct ones ship with the amplifier.

What power supply do I need?

24 V, and it must supply up to 4 A. Do not size the supply from the output power — a 100 V, 5 mA module only delivers 0.5 W but still draws several amps at start-up. Input tolerance is narrow at 23–25 V, so a well-regulated supply is worth using.

Two models — AHVAPN1KV20MABN and AHVAPN1800V20MABN — can be ordered with a matching supply included, so you do not have to source one.

How do I know which one to buy?

Three things decide it: peak voltage, load capacitance, and how fast it has to change. Voltage picks the family. Capacitance and speed together decide the current rating — see the current calculator above.

Can these drive piezo actuators?

Yes, that is the main use. Piezo stacks, benders, multilayer ceramics, MEMS and Pockels cells all work. Size by capacitance and speed, not voltage alone.

What does “slew rate” mean and do I care?

It is how fast the output can change, in volts per microsecond. For slow positioning, 100 V/µs is plenty. For square waves or fast switching, you want the AHVAPN series at 2000 V/µs. Too slow and your square wave comes out as a ramp.

Positive, negative, or both?

The AHVA series is positive only, from +100 V to +2 kV. The AHVAN series is negative only, down to −2.5 kV. The AHVAPN series is bipolar — it swings continuously from −2 kV to +2 kV on one output, with no relay or switching circuit needed.

What is included when I order? Do I get a power supply?

Every unit ships with a probe and cable set as standard: a high-voltage probe, a low-voltage probe, high-voltage and low-voltage cables, and a terminal block for monitoring the input signal. The cables supplied match the connector type of the model you order — BNC, SHV or banana — so nothing extra needs sourcing.

AHVAPN1KV20MABN and AHVAPN1800V20MABN can also be ordered with a matching 24 V power supply — that option is why those two show a price range. All other models need a 24 V supply of your own.

Can you build a custom version?

Yes. Different voltage, current or connector are all possible for OEM quantities. Send us the load capacitance, voltage swing, waveform and any size limits.