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USER MANUAL - Falco Systems

1. should be avoided Connecting a charged capacitor Using high inductance values coils joad The output impedance of the WMA 300 is 500 The amplifier is generally used for high impedance applications where the load is mainly capacitive This is true for MEMS devices EO modulators and PZTs piezo s alike It should be noted that a coaxial cable also presents a capacitive load of approximately 100pFir The cables that are connected may well limit the maximum usable current at high frequencies Matched loading with a 500 circuit is possible by connecting a 500 resistor in series with the output to ground buts not usually recommended The advantage is that excessively long cables will not distort the wavetorms anymore The disadvantage is a clearly reduced voltage range 300mA in SQQ gives 15V instead of 150V With high frequency measurements cable length should be minimized or the cables themselves wil cause overshoot and current limiting Although the amplifier remains fully stable more than 1 5 meter of output cable is not recommended for the WMA 300 for optimal results Hf output monitoring is required it is recommended to connect a 10x oscilloscope probe to the output A special BNC to probe tip connector is usually supplied with the Probe Fig 1 However the user can choose a different Way of connecting the osciloscope as long as care is taken with the high output voltage Pieces of non coaxial cable in the conne
2. SC Falco Systems DC 5MHz High Voltage Amplifier WMA 300 USER MANUAL E sov to 150V output IS Dc to Sitz Q 34B large signal bandwidth B aciipy sie is opie Bl aei capa sace IS stable with all capacitive loads generates no overshoot I shortcircult protected output OY For MEMS devices EO modulators PZT piezo positioning beam steering ultrasonics About this manus This user manual is an integral part of the Falco Systems WMA 300 amplifier product Please read it carefully and pay attention to the recommendations and the instructions for safe use Se description The Falco Systems WMA S00 is a high speed high voltage linear laboratory ampifier for demanding applications Is wide bandwidth and large voltage range make it an excellent choice for use with MEMS devices EO modulators PZT positioning systems beam steering ultrasonics dielectic studie and many others Through the extensive use of computer modeling and state of the art design concepts his amplior can be used in many applications including those where conventional amplifiers are dificut to apply It is designed to be absolutely stable and tree of spurious signals with any capacitive load The amplification is 50x xed With a range of 150V to 150 a large signal bandwidth of SMHz 34B and a ypical slow rate of 2000V us this amplifier wil enable many measurements in diferent applications iis frequency response
3. ction can cause overshoot in the oscilloscope reading Figure 1 The 10x probe connected for monitoring the output signal The ampifier should not be used for telecommunication as described in the R amp TTE directive 9S S EC To prevent unwanted radio emission the TDK ferrite ring which is supplied with the instrument should be mounted on the output cable close to the WMA 300 housing as indicated in Fig 2 when square wave output signals above 100kHz and 50V are generated In this case the length of the Output cable should be no more than 1 5 meter The measurement is not influenced by this ring it is only required to comply with European EMC legislation cu c Figure 2 The ferie ring type TDK ZCAT3035 1330 should be placed on the output cable as indicated when a square wave of more than 100kHz and 50V is generated to prevent unwanted radio emission in the 3OMHz region Amplifier characteristics In tha following pages several amplifier characteristics are shown Frequency response Fig 2 3 Square wave response Fig 4 5 8 Slew rate Fig 7 Capacitive load dependency of square waveoutput Fig 8 Triangle and sine response Fig 9 10 Noise and offset Fig 11 Input to output delay time Fig 12 Hm 1 1 160 P a v 10 v 10 m Figure 2 Frequency respons t 900p ouput volage Figure Fk sc IM quae wave H H c i ic amp 3 emm
4. emm emm wv w wo a w Frequency H2 Figure 3 Frequency response at 3Vpp output voltage Figure 6 4Vpp small signal 1MHz square wave 300Vpp step upin 125ns 300Vjystep down in 121ns Figure 9 Triangle wave 300V 1kH2 Ovis xe TENMOVR tne eters m Figure 7 iw ation sop response om 10 10 Sox eign 20 Tata 2000 E Vi n E Figure 10 Sine wave 30V tkHz TRviwe Figure 8 Full power 100kHz square wave response with different capacitive loading conditions The 300mA current limit limits the speed at which the capacitor can be charged Figure 11 Noise about 70mVp or equivalently t2mV rms and typical offset The offset may shift during high power high frequency operation due to temperature gradients between different pars ofthe circuit IL A Abidons Figure 12 Input to output delay time 140ns Technical specifications Amplicaion 0 fed Bandwidth DC SMHz 3d8 large signal bandwidth Slew rate 2000V s typical Delay time 140ns input o output Output vottage 150V to 150V Current 300m typical with nitor Noise and offset 12mV rms noise over the ful bandwidth typical 100mV offset typical Input impedance 500 Output impedance 502 Stability stable with all capacive and resistive loads no overshoot gt 5 Power 230V SOHz AC 1200 Mains fuse 2x 0 63A 290V slow blow Class 1 safety product requires mains power supply connector with earth Do not use non si
5. en in a lab when cables are going everywhere For normal operation input voltages should remain in the SV to 3 range resulting with an amplification of 50x in an output voltage swing of 150V to 150V Above 3V V the input protection diodes wil imt the voltage fed o the amplior Above 30V 30V at the input the amplfer may be fermanenty damagod i he curent of he source is rot ited The output can be connected to the input because he current init of tho amplifier wil cut back the voltage to a level that can be managed by ho input Never apply more than 30V 30V to the amplifer input Output protection The WMA 900 has been designed to be fly stable with al apaciive loads it has been optimized for is stop response but is also a very good linear and sine wave amplifier Instability under capacitive loading conditions is a common problem of high speed negative feedback amplifiers on the Market often resulting in unwanted overshoot vollages and in extreme cases osclations check the respective manuals and datasheeis for detis In the WMA 300 hs problem has been solved by a clever dual feedback System No significant overshoot occurs at any capacttve load Overloading or shortcirculing this ampltier wil not break down the amplifier due to the extremely fast curent limiting circuit that has been employed Although the amplifier cannot be damaged by a short circuit condition or capacitive loading two situations
6. is essentially fat up to 2MHz A fast current limit of 300mA typical and a fast short Circuit protection make this amplifier suitable for both the normal daily laboratory use and abuse and automated measurement systems Safety This productis able to produce over 150V at ore Ban SO0mA at fs output which te a dangerous high level isk of elecic shock Safe moles soul e taken according Only usa das appkance with a mains connecion with protective earth P Ihe intemal culty ofthe amplfer operates at high Vollage Only quafted personnel fom alco Systems Sod sence the ampli When the amplifer i tuned on or off a short vokage spike may appear at the ouput which may damage Samy cheat conned ton Replace fuses with 250V G30mA S 0mm slow blow ated tees only To Falco Systems WMA 300 is on suitable for indoor se n a clas environment domest ight induta This product shoud ony be loaned wah a eo eighty moist cath Unplug the WHA 300 from the maine power before earing high speed ampitior like the WMA 300 can never be made fully insensitive to input overload conditions as this would li the performance of the ampifior to an Unacceptably low level However compared to other circuits the input is protected extremely well by a combination of a high power 502 impedance and diode protection for extreme overload conditions lt can even withstand connecting the output to the input for some time Which may accidentally happ
7. nusoidal mains power generators indoor use only Operating temperature 15 30 C Storage temperature 0 60 C Relative humidity 30 709 non condensing Dimensions 280 x 280 x 160 mm Weight 6 Bkg Country af origin The Netherlands Specifications are subject to change Wi ty Falco Systems products are guaranteed against malfunction due to defects in materials or workmanship for a period of 1 year from the date of shipment It such a malfunction occurs during this period the product willbe repaired or replaced at our option without charge The product will o returned to the customer prepaid Tho warranty does not apply to Exterior finish or appearance Malfunction resulting from use or operation of the product other than as specified in the user manual Maifunctioning due to misuse or abuse of the product Malfunctioning occurring any time after changes or repairs have been made to the product by anyone other than Falco Systems To obtain warranty service the customer must inform Falco Systems first and then send the product prepaid to Falco Systems together with a proof of purchase of the product in the form of a bil of salo or receipted invoice his warranty explicitly only covers the product itself The repair or replacement including retum to the customer are the only services provided to the customer inthis respect Faico Systems will not be lable for any consequential damages including with
8. out limitation devices or equipment connected to the product injury to persons or Property or loss of use See for more details the Falco Systems Standard Terms and Conditions of Sale User sion User manual version 1 5 Date February 21 2012 Harmonized st This product complies with the following harmonized European standards sate cero ser geez CC wax Do not dispose of the WMA 300 as standard waste but bring itto a WEEE electronic waste collection point Falco Systems Falco Systems Gelderlandplein 75 L 1082 LV Amsterdam The Netherlands Tel 431 0 6 11164 818 Fax 31 0 20 2031 445 Email info falco systems com http iwwrw falco systems com

USER MANUAL - Falco Systems

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