High-voltage amplifier DXAM series

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Overview

The DXAM series high-voltage power amplifier is a laboratory-grade AC/DC amplifier designed to amplify input signals and deliver controlled high-voltage output to specified loads within defined distortion limits. It is compatible with common signal generators and is widely used in test benches and R&D environments.

Working principle of high-voltage amplifier

The amplifier converts an input voltage into a high-voltage output waveform suitable for driving high-voltage and capacitive loads, with support for four-quadrant operation and DC biasing where required.

Key features

• Four-quadrant output architecture for driving capacitive and complex loads
• Closed-loop control for high accuracy and stable output
• Short-circuit and overload protection to safeguard equipment
• Stable output suitable for programmable power-supply applications
• Low output noise to support ultra-high-precision measurements
• Digitally adjustable voltage gain and, on selected models, programmable/storable gain presets

Product series highlights

• DXAM-2KV series: Differential output up to 1600 Vp-p (±800 Vp); digitally adjustable gain with one-click save for recurring settings; dual-channel synchronous adjustable output.
• DXAM-4KV series: Optimized for AC and DC amplification; balanced performance for medium-voltage laboratory applications.
• DXAM-10KV series: High-voltage DC/AC amplification with numerically adjustable gain and DC bias capability for advanced testing scenarios.

Technical specifications

• Models: DXAM-4KV; DXAM-10KV (DXAM series)
• Output voltage range: DXAM-4KV = 0 to ±4 kV DC or peak AC; DXAM-10KV = 0 to ±10 kV DC or peak AC
• Output current range: DXAM-4KV = 0 to ±10 mA DC or peak AC; DXAM-10KV = 0 to ±40 mA DC or peak AC
• Input voltage range: 0 to ±10 V DC or peak AC (applies to models)
• Input resistance: 25 kΩ
• DC voltage gain: DXAM-4KV = 400 V/V; DXAM-10KV = 1000 V/V
• DC voltage gain accuracy: Better than 0.2% of full scale
• DC offset voltage: DXAM-4KV = below ±1 V; DXAM-10KV = below ±2 V
• Output noise: DXAM-4KV less than 30 mV rms; DXAM-10KV less than 40 mV rms
• Slew rate (10% to 90%): DXAM-4KV greater than 1000 V/µs; DXAM-10KV greater than 750 V/µs
• Small-signal bandwidth (-3 dB): DC better than 10 kHz
• Large-signal bandwidth (-3 dB): DXAM-4KV better than 20 kHz; DXAM-10KV better than 5 kHz
• DC biasing: Supported (models provide DC bias capability)
• Internal output capacitance: 300 pF (high-voltage output)
• Automatic power limit: Protects amplifier under overload conditions
• Stability: Drift over time less than 100 ppm/hr (non-cumulative); drift with temperature less than 120 ppm/°C
• Voltage monitoring ratio: DXAM-4KV = 1 V per 400 V; DXAM-10KV = 1 V per 1000 V
• Voltage monitoring noise: Less than 20 mV rms
• Voltage monitoring accuracy: Better than 0.5% of full scale
• Current monitoring ratio: DXAM-4KV = 1 V per 4 mA; DXAM-10KV = 1 V per 2 mA
• Current monitoring noise: DXAM-4KV = 10 V rms; DXAM-10KV = 12 V rms
• Current monitoring DC accuracy: Better than 2% of full scale
• High-voltage output interface: DXAM-4KV = MHV coaxial connector; DXAM-10KV = high-voltage connector
• Power supply requirement: AC 220 V, 50/60 Hz

Applications

• MEMS and microactuator testing
• Ultrasonic transducer testing and drive
• Electromagnetic field driving and materials testing
• Wireless power transmission research and prototypes
• General electronic experimental testing and R&D

Ordering & support

Contact our sales team for configuration options, custom DC biasing, connector choices and calibration/servicing packages. Provide required load characteristics and signal source details for best configuration advice.