ATA-400 Series High Voltage Amplifier

Bandwidth (-3dB) up to DC~300kHz, Output voltage up to 310Vp-p (±155Vp), Max output current 4Arms

Not every high-voltage power amplification task needs the extended megahertz-plus bandwidth of Aigtek's higher-numbered high-voltage series — many high-voltage load-driving applications operate well within a few hundred kilohertz. Aigtek's ATA-400 Series covers this segment: a high-voltage power amplifier reaching 300kHz bandwidth (-3dB) while amplifying both AC and DC signals.

Maximum output voltage of 310Vp-p (±155Vp) with 547.1Wp of power gives the ATA-400 solid high-voltage drive capability, matching the ATA-4000's voltage and power specification closely while operating at a more moderate bandwidth. Fine adjustment of both voltage gain and DC bias lets the output be precisely configured to the specific load being driven, consistent with the fine-tuning capability found across Aigtek's high-voltage amplifier range.

Where an application's frequency requirements sit comfortably within 300kHz, the ATA-400 delivers the same voltage and power capability as the higher-bandwidth ATA-4000 series, without paying for bandwidth headroom the application doesn't actually need.

ATA-400 Series High Voltage Amplifier

Maximum output voltage 310Vp-p (±155Vp) and 547.1Wp power, drives high-voltage power loads. Voltage gain and DC bias are fine adjustable.

Enquire About This Series →

Model	Bandwidth (-3dB)	Voltage	Current	Power	Output
ATA-401 High Voltage Amplifier	DC~300kHz	160Vp-p(±80Vp)	5.65Ap	452Wp	Single output	Enquire
ATA-402 High Voltage Amplifier	DC~120KHz	310Vp-p(±155Vp)	3.53Ap	547.1Wp	Single output	Enquire

Model Details

ATA-401 High Voltage Amplifier: Introduction, Full Specifications & Datasheet

Product Introduction

The ATA-401 is a single-channel high-voltage power amplifier capable of amplifying both AC and DC signals, delivering a maximum output of 160Vp-p (±80Vp) and 452Wp to drive high-voltage power loads. Gain is digitally adjustable with one-click saving of common settings, it is compatible with mainstream signal generators, and the wide-range power supply accommodates different regional power standards.

LCD Panel DisplayDynamically shows device status and parameters, offering a clear and intuitive interface.

Voltage GainDigitally adjustable x0~x50, with coarse (1 step) and fine (0.1 step) adjustment modes.

InputBNC interface with selectable 50Ω or 100kΩ input impedance.

OutputBNC interface, max output 160Vp-p (±80Vp), max output current 5.65Ap.

ApplicationsNon-destructive testing (NDT), soft magnetic material testing, transformer testing, semiconductor testing.

Specifications

Model	ATA-401
Output Type	Single-ended Output
Bandwidth (-3dB)	DC~300kHz
Maximum Output Voltage	160Vp-p (±80Vp)
Maximum Output Current	2Ap (DC~50Hz) 5.65Ap, 4Arms (>50Hz)
Maximum Output Power	452Wp
Fuse	8A/250V
Voltage Gain	x0~50 (0.1 step/1 step)
Load RL Upper Limit	≥39.75Ω (DC~50Hz) ≥13.91Ω (>50Hz)
Output Impedance	0.25Ω + 0.6μH
Slew Rate	≥107V/μs
DC Bias Adjustment	±75V (0.1V step/1V step)
Input Impedance	50Ω / 100kΩ
Input Amplitude	0~10Vp-p MAX
Output Voltage Error	≤±3% FS @ 1kHz
Voltage Monitoring	100:1 (±5% @ Output, FS)
Total Harmonic Distortion (THD)	≤0.1% @ 1kHz, 100Vp-p
Output Voltage Drift	≤±0.02V
Ripple	≤0.01Vrms
Output Interface	BNC
Protection	Short Circuit, Over Voltage and Over Temperature Protection
Signal Ground	Connected to chassis and power line ground
Others
Power Supply Voltage	AC110~240V, 50/60Hz
Operating Temperature	0°C~45°C
Storage Temperature	-20°C~50°C
Working Humidity	≤80% RH, non-condensing
Warranty	1 year
Dimensions	440×149×454mm (W×H×D)

Full specification table as published by Aigtek. Contact Finch to confirm current specifications before ordering.

Technical Documentation

Download the full technical datasheet for the ATA-401 High Voltage Amplifier, published by Aigtek.

⬇ Download Datasheet (PDF) Enquire About ATA-401 →

ATA-402 High Voltage Amplifier: Introduction, Full Specifications & Datasheet

Product Introduction

The ATA-402 is a single-channel high-voltage power amplifier capable of amplifying both AC and DC signals, delivering a maximum output of 310Vp-p (±155Vp) and 547.1Wp to drive high-voltage power loads. Gain is digitally adjustable with one-click saving of common settings, it is compatible with mainstream signal generators, and the wide-range power supply accommodates different regional power standards.

LCD Panel DisplayDynamically shows device status and parameters, offering a clear and intuitive interface.

Voltage GainDigitally adjustable x0~x100, with coarse (1 step) and fine (0.1 step) adjustment modes.

InputBNC interface with selectable 50Ω or 100kΩ input impedance.

OutputBNC interface, max output 310Vp-p (±155Vp), max output current 3.53Ap.

ApplicationsNon-destructive testing (NDT), soft magnetic material testing, transformer testing, semiconductor testing.

Specifications

Model	ATA-402
Output Type	Single-ended Output
Bandwidth (-3dB)	DC~120kHz
Maximum Output Voltage	310Vp-p (±155Vp)
Maximum Output Current	1.25Ap (DC~50Hz) 3.53Ap, 2.5Arms (>50Hz)
Maximum Output Power	547.1Wp
Fuse	10A/250V
Voltage Gain	x0~100 (0.1 step/1 step)
Load RL Upper Limit	≥123.4Ω (DC~50Hz) ≥43.3Ω (>50Hz)
Output Impedance	0.625Ω + 1.2μH
Slew Rate	≥83V/μs
DC Bias Adjustment	±150V (0.1V step/1V step)
Input Impedance	50Ω / 100kΩ
Input Amplitude	0~10Vp-p MAX
Output Voltage Error	≤±3% FS @ 1kHz
Voltage Monitoring	100:1 (±5% @ Output, FS)
Total Harmonic Distortion (THD)	≤0.1% @ 1kHz, 100Vp-p
Output Voltage Drift	≤±0.02V
Ripple	≤0.01Vrms
Output Interface	BNC
Protection	Short Circuit, Over Voltage and Over Temperature Protection
Signal Ground	Connected to chassis and power line ground
Others
Power Supply Voltage	AC110~240V, 50/60Hz
Operating Temperature	0°C~45°C
Storage Temperature	-20°C~50°C
Working Humidity	≤80% RH, non-condensing
Warranty	1 year
Dimensions	440×149×454mm (W×H×D)

Full specification table as published by Aigtek. Contact Finch to confirm current specifications before ordering.

Technical Documentation

Download the full technical datasheet for the ATA-402 High Voltage Amplifier, published by Aigtek.

⬇ Download Datasheet (PDF) Enquire About ATA-402 →

Related Series

ATA-4000 Series

High-voltage amplifier, 310Vpp, DC~3MHz

ATA-40000 Series

High-voltage amplifier, 310Vpp, up to 8Arms

ATA-P Series

Piezoelectric stack amplifier, up to 1300Wp

Frequently Asked Questions

How should I choose between the ATA-400 and ATA-4000 series?

Both share essentially the same voltage (310Vp-p) and power (547.1Wp) specification; the choice comes down to required bandwidth — 300kHz for the ATA-400 versus 3MHz for the ATA-4000. Matching the series to the application's actual frequency requirement avoids unnecessary cost for bandwidth headroom that isn't needed.

What types of loads is the ATA-400 typically used to drive?

High-voltage power loads generally — applications requiring sustained voltage output in the hundreds-of-volts range at moderate frequency, where the load's dynamic response requirements stay within the amplifier's 300kHz bandwidth.

Does fine DC bias adjustment work independently of voltage gain on the ATA-400?

Yes — voltage gain and DC bias are both independently fine-adjustable, letting the AC signal scaling and the output's DC operating point be configured separately to match the specific requirements of the driven load.

See Aigtek's technical documentation for the ATA-400 series →

ATA-400 Series High Voltage Amplifier

Frequently Asked Questions

How should I choose between the ATA-400 and ATA-4000 series?

What types of loads is the ATA-400 typically used to drive?

Does fine DC bias adjustment work independently of voltage gain on the ATA-400?

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