High Voltage Wideband Power Op-Amp Module, 50Vpp 1A, DC–1MHz, Stable Capacitive Load Driver
- High Voltage Amplifier / High Voltage Power Amplifier
- Wideband Amplifier / Wide Frequency Amplifier
- Power Op-Amp / Operational Amplifier
- Capacitive Load Driver / Piezo Driver
- 50Vpp / 1A / 1MHz
- Stable Output / Low Distortion
- High Current Amplifier
High Voltage Wideband Power Op-Amp – Precision Drive for Capacitive Loads
50Vpp 1A High Voltage Wideband Power Op-Amp for Piezo Actuators
Reliable High Voltage Wideband Power Op-Amp Module with DC–1MHz Bandwidth
High voltage wideband power amplifier module capable of driving up to 50Vpp and 1A continuous current into capacitive loads up to 10nF. Ideal for piezo drivers, capacitive actuators, and high-speed test applications. Stable output with DC–1MHz bandwidth. Customizable options available.
Table of Contents
Overview
This high voltage wideband power op-amp module is specifically designed for driving capacitive loads with precision and stability. With a continuous output of up to 50Vpp (±25V) and 1A current, it can handle demanding capacitive loads of up to 10nF without oscillation or distortion. The module provides a DC–1MHz bandwidth, making it ideal for high-speed applications requiring accurate voltage control across capacitive elements.
Designed for professional engineers and research labs, this module is ideal for applications such as piezoelectric actuator control, capacitive sensor testing, laser modulation, and high-speed electronic testing equipment. Its combination of high voltage, wide bandwidth, and stable capacitive load driving makes it a versatile solution for precision electronics projects.
The module is built with a high-performance power operational amplifier core, optimized for large capacitive loads and high current output, ensuring reliable and distortion-free operation under continuous use.
Features
- High Voltage Output: ±25V, 50Vpp for driving demanding capacitive loads.
- High Current Capability: 1A continuous output current for large capacitive loads.
- Wide Bandwidth: DC–1MHz for high-speed signal applications.
- Stable Capacitive Load Driving: Supports up to 10nF capacitive loads without oscillation.
- Low Distortion Output: Ensures accurate signal reproduction for precision applications.
- Compact and Modular: Easy to integrate into test systems or laboratory setups.
- High Reliability: Designed for continuous operation under load with minimal heat generation.
- Flexible Applications: Suitable for piezo actuators, capacitive sensors, laser modulators, and more.
- Customizable Options: Gain, voltage range, or current output can be adjusted based on application needs.
Specifications
| Parameter | Value |
|---|---|
| Bandwidth | DC–1MHz |
| Output Voltage | 50 Vpp (±25V) |
| Continuous Output Current | 1A |
| Load Type | Capacitive (10nF max) |
| Stability | Stable, no oscillation |
| Power Supply | ±30V DC |
| Gain | 10 dB (adjustable) |
| Operating Temperature | 0–50°C (standard) |
| Mounting Type | Bench module or PCB integration |
⚠ Note: For higher capacitive loads or extended frequency, custom modules are recommended.
Dimension and Weight
Applications
- Piezoelectric Actuator Driving: Precise control of piezo devices in industrial and research applications.
- Capacitive Sensor Testing: High-speed voltage driving for accurate sensor characterization.
- Laser & Optical Modulation: Stable high voltage output for modulating optical devices.
- High-Speed Electronic Testing: Ideal for ATE (Automated Test Equipment) and lab signal generation.
- Research & Development: Laboratory setups requiring wideband high-voltage driving of capacitive loads.
Customization Options
This module can be customized for specific requirements:
- Output Voltage: Up to ±50Vpp or higher depending on design.
- Output Current: Adjustable for loads exceeding 1A.
- Gain: Adjustable gain from 0–20dB.
- Load Compensation: Optimized for larger or smaller capacitive loads.
- Enclosure: Benchtop module, PCB mount, or OEM integration.
Custom orders are welcome for applications requiring extended frequency range, higher voltage, or special load conditions.
FAQ
Q1: Can this amplifier drive loads larger than 10nF?
A: Standard module is optimized for 10nF. Loads above this may require custom compensation to maintain stability. Please contact us for custom solutions.
Q2: Is the output linear and low distortion?
A: Yes, the amplifier is designed for linear response with minimal distortion, even under continuous high-current operation.
Q3: Can I use it to drive piezo actuators?
A: Absolutely. This module is ideal for piezo devices, providing precise voltage control and high-speed response.
Q4: What power supply do I need?
A: Standard ±30V DC dual supply is required. Custom modules can be designed for alternative voltage ranges.
Q5: Can the gain be adjusted?
A: Yes, the default gain is 10dB, but it can be customized depending on your application.
Q6: What is the maximum frequency I can use?
A: The module provides stable operation up to 1MHz. For higher frequencies or larger loads, contact us for a custom design.
High Voltage Wideband Power Op-Amp for Stable High-Speed Capacitive Load Driving
Powerful High Voltage Wideband Power Op-Amp for Lab and Industrial Applications
High Voltage Wideband Power Op-Amp – Ideal for Piezo and Capacitive Devices
Precision High Voltage Wideband Power Op-Amp for High-Current Applications
This is a high-power operational amplifier that allows the internal current-limiting circuit to be set via external resistors, preventing amplifier overload. The module operates at a voltage range of ±10 V to ±40 V, with an input impedance of 10 kΩ and low output impedance. It can deliver a peak output current of up to 5A. At a gain of 5×, the no-load bandwidth reaches up to 500 kHz, and the maximum output power can reach 30 W. This module is widely applicable in motor drives, speaker drives, transformer drives, and audio amplification.
| Parameter | Value | Notes |
|---|---|---|
| Module Type | Low-Frequency Power Amplifier | — |
| Supply Voltage Range | ±10 V ~ ±40 V | — |
| Input Voltage Range | ±5 V (10 Vpp) | At ±30 V supply, gain = 5; dependent on supply voltage and gain |
| Output Voltage Range | ±25 V (50 Vpp) | At ±30 V supply |
| Output Power | 30 W (MAX) | — |
| Input Impedance | 10 kΩ | — |
| Output Impedance | Low | — |
| Output Current | 5 A (MAX) | Peak current, not RMS |
| Bandwidth | 500 kHz | G = 5, Vo = 1 Vpp, no load. Higher gain or heavier load reduces bandwidth |
| Gain | 5× ~ 100× | Adjustable via potentiometer |
| Input Signal Type | Single-Ended | — |
| Cooling | Built-in Heat Sink | For high current, consider a larger heat sink or add a cooling fan if possible |
| Enable | Yes | Default enabled |
| Power Protection | Reverse-Polarity Protection | Chip has built-in current limiting |
| Features | — | Enhanced load-driving capability |
| Applications | Multiple | Small-signal amplification, audio amplification, motor drives, etc. |
| Interface | SMA / 5 mm Terminal | Two options for input/output |
| Module Size | 96.52 mm × 49.53 mm | Length × Width |
Test
Test conditions: Power supply ±32 V, input signal 500 mVpp, gain set to 100×, load 100 Ω. Partial test waveforms are shown below.
iVcan.com –
I’ve been using this high voltage wideband power op-amp module in a capacitive load driving setup, and it has performed exceptionally well. The output is very stable even when driving demanding loads like piezo actuators, with no noticeable oscillation or distortion. I was particularly impressed by its wide bandwidth and high current capability, which make it suitable for both high-speed testing and precision control applications. The build quality is solid, and the thermal performance is reliable during continuous operation. It integrates smoothly into my lab system and offers great flexibility for different use cases. Overall, it’s a powerful and dependable solution for high-voltage amplification needs.