High Voltage / Piezo Amplifiers, Signal Conditioners & Data Acquisition System
Surface Engineering & Thin Film Deposition Systems
Thermal Imaging & Night Vision
IED Detection & Counter Measures
Under Water Metal Detectors, Camera's & Sonar Systems

High Voltage / Piezo Amplifier
A310 High Voltage, High Power Amplifier/ Piezo Driver:
The A310 Piezo Driver/Piezo Amplifier is a high Voltage, fast Piezo Driver / Linear Amplifier for high power applications.
It was especially designed as a Linear Amplifier / Driver for high capacitance PIEZO Electric Actuators (also known as "Piezo Amplifier"), stacks, piezo sheets, bimorph elements and other devices.
The Piezo Driver / Piezo Amplifier is based on a high voltage, high frequency and high current MOSFET amplifier which is capable of driving up to ±100V (200V ptp) at ±2.5A at frequencies from DC to 250 kHz.
 The A310 amplifier is available in 2 configurations:
 Single Amplifier ±100V output, ±2.5A output current, DC 250KHz. Frequency Bandwidth
 Dual Amplifier: 2 Independent Amplifiers with independent inputs and outputs, ±100V outputs, ±1.2A output current capability, DC 250 KHz. Frequency bandwidth.
By connecting 2 amplifiers in inverting, differential connection to a floating load, up to ±200V @ ±1.2A can be delivered to the load (240W peak or 120W RMS).
The amplifier section is very stable and has a very low electrical noise  Compare Our Specifications!
This High speed Amplifier / Driver can be used for Various applications requesting high frequency, High Voltage and fast response as: Plasma Driver and Plasma Actuation, driver for piezo manipulator, Optical Switching devices, closed loop feedback systems, vibration control, structural damping analysis, Flow actuation and control etc.
 Features:
 High Frequency Amplifier: DC 250KHz
 Very Low Electrical Noise: <5mVptp
 Low Distortion: <0.01% @ (DC1KHz)
 High Slew Rate: 150 Volts/microsecond
Output Vs. Input @ 1KHz Sine Wave 
Output Vs. Input @ 250KHz Sine Wave 
Amplifier Section: 
Maximum Input Voltage 
±12V 
Maximum Output Voltage 
±100V (200Vptp) 
Maximum Current 
±2.5A (±1.2A in dual amp configuration) 
Bandwidth 
Into 1 K Resistive Load DC to 250kHz (3dB) Into Capacitive load (single amp): DC to 250kHz (3dB) (0 to 20nF) DC to 75kHz (3dB) (50nF) DC to 38kHz (3dB) (0.1µF) DC to 3500Hz (3dB) (1µF) DC to 350Hz (3dB) (10µF) 
Output Power 
250 Watt Peak 
DC Gain 
10 (upto 50 optional) 
Coupling 
Input & Output: Direct DC Coupling 
DC Offset 
Adjustable to ±10 Volts + On/Off Switch 
Input Impedance 
10 K 
Slew Rate 
150V/µSec 
Output Impedance 
1 
Output Noise (Input shorted, 250KHz. Bandwidth) 
6mV PTP max. (1.3mV RMS max.) 
Variable Gain Option 
010X or 020X or 040X available Please consult the factory regarding that option 
AC Input: 
Line Input Voltage 
110/120V, 60Hz or 220/230V, 50/60Hz. Preset on factory 
Line Input Current 
6A peak (@220VAC) 
Options: 
01  One channel, ±100V @ ±2.5A 
1 input, 1 output 
02  Dual Channel, ±100V @ ±1.2A X2 
2 inputs, 2 outputs 
02  Higher Gain 
Upto 50 
04  Variable Gain 
010X or 020X  No Charge. 
The Standard amplifier has very low noise.
Noise level @ 250 KHz. BW, input shorted
Display set @ 5mV/div. 100nS/div.
Total noise is less than 1mV RMS! 


Output Noise  250 KHz. Bandwidth 5MHz B.W. Limit 
The Amplifier's are housed in a standard 19" rack enclosure, 4U height. Weight: 24 Kg.
 Applications:
2 amplifiers can be connected in series or in parallel in order to double the Output Voltage or Output Current. Series connection (±400V into a floating load = 800V ptp).
Calulating the estimated current needed to drive your load:
In order to purchase the right amplifier to drive your load, you must calulate the peak current needed.
For Capacitive Load: I_{peak(A)} = 2 π F C V_{peak} (for a Sine Wave) I_{peak(A)} = 4 F C V_{peak} (for a triangular wave) I_{peak(A)} = C dV / dt (for a square wave or sharp rise time)
F = Maximum frequency (Hz.) C = Capacitance in Farads V_{peak} = Maximum Voltage you need to drive your Load. Π = 3.1415927
For Resistive Load: I = V_{peak} / R
Where R is the resistance of your load in ohms
The Current, Voltage and Frequency must be less or equal to the amplifier's specifications


 Frequency Response Curve for Various Output Configurations and Loads:
 2 BiPolar Amplifiers, ±95V @ 1.25A:
 1 BiPolar Amplifiers, ±95V @ 2.5A:
 1 UniPolar Amplifier, 0190V @ 2.5A:
 2 UniPolar Amplifiers, 0190V @ 1.25A:
This amplifier is NOT SUITABLE for driving pure inductive loads (i.e. speakers, solenoides, electromagnets etc.)
You must connect your load with thick wires to minimize inductance (like speaker wires). Coaxial cable is not recommended for cables over 2m (6.5 Ft.) because the capacitance of the cable (1550 pF/Ft) will load your amplifier at high frequencies.
Example: 
The active impedance of a capacitive load is given by the equation: Z=1/(2*π*F*C) where π=3.1415, C in Farads, F in Hz. The user must check that under the peak operation voltage, at maximum frequency, the current will not exceed 2500mA (2.5A) 
Example: 
Output Voltage is ±100V, Maximum Frequency = 20kHz, Load is 100nF Z=1/(2*3.1415*20,000*10*10^{9})=79.6 Ohms 100[V]/80[Ohm]=1250[mA] ===> The single channel amplifier will drive that load at an amplitude of 100V (200V ptp). For the dual channel amplifier, this load is marginal because the current capacity is only 1200mA 
