To help you select the appropriate Trek amplifier, please download Trek's PC software which uses peak-to-peak voltage to help calculate values associated with driving capacitive loads: Amplifier Calculator Software (Win Zip file). Trek recommends creating a new folder for software application downloads.
If you have any difficulty with this software or would rather not do the download, please use the step-by-step calculator procedure provided below.
Trek has a line of amplifiers designed with various voltage and current levels that can be used to drive capacitive loads. The table below lists selected Trek amplifiers with their voltage and current ranges. The internal capacitance of each amplifier is in the X pF (pico farad) column. To determine which Trek Model amplifier is most suitable for your application:
If the calculated peak current is equal to or less than the peak current range of the amplifier, the Trek amplifier will not be bandwidth limited due to output current limitations. For example, if the calculated peak current is equal to or less than 20 mA, the Model 20/20C will not be bandwidth limited due to output current limitations and therefore it will be an appropriate model for your application. Nevertheless, we recommend you discuss your application with Trek prior to final selection in case there are nuances to evaluate or consider.
For assistance please contact a Trek sales engineer at sales@trekinc.com
Application Notes
Refer to Application Note #6003 titled "Choosing the Correct Capacitive Load Amplifier" for further information regarding driving capacitive loads.
where:
I = the peak current needed from the amplifier
C load = the load capacitance
X pF = the internal output capacitance of the amplifier
( in pico farads)
dV = the peak value of the square wave
dt = the rise time required
dV/dt = the slope of the rise/fall time
Model | X pF | Output Current |
Output Voltage (DC or peak AC) |
50/12 | 34 pF | ±12 mA | ±50 kV |
40/15 | 43 pF | ±15 mA | ± 40 kV |
30/20A | 50 pF | ±20 mA | ±30 kV |
P0621P | 57 pF | ±20 mA | 0 to +30 kV |
P0621N | 57 pF | ±20 mA | 0 to -30 kV |
20/20C-HS | 75 pF | ±20 mA DC or ±60 mA peak AC for 1 ms |
±20 kV |
20/20C | 60 pF | ±20 mA | ±20 kV |
10/40A-HS | 133 pF | ±40 mA DC or ±120 mA peak AC for 1 ms | ±10 kV |
10/40A | 60 pF | ±40 mA | ±10 kV |
PD07016 | 60 pF | ±60 mA DC ±300 mA peak AC for 20 µs |
±10 kV |
10/10B-HS | 55 pF | ±10 mA DC ±40 mA peak AC for 1 ms |
±10 kV |
610E | 66 pF | ±2 mA | ±10 kV |
PD05034 | 50 pF | ±50 mA DC ±160 mA peak AC for 60 µs |
±7.5 kV |
609B-3 | 66 pF | ±2 mA | ±10 kV |
5/80 | 70 pF | ±80 mA | ±5 kV |
609E-6 | 50 pF | ±20 mA | ±4 kV |
PZD2000A | 400 pF | ±200 mA DC or ±400 mA peak AC for 2 ms |
±2 kV |
623B | 50 pF | ±40 mA | ±2 kV |
677B | 330 pF | ±5 mA | ±2 kV |
2220 | 300 pF | ±10 mA | ±2 kV |
2210 | 300 pF | ±20 mA | ±1 kV |
PZD700A (±700 volt range) |
270 pF | ±100 mA | ±700 V |
PZD700A (1.4 k volt ranges) |
135 pF | ±50 mA | +1.4 kV or -1.4 kV |
PZD700A M/S (±700 volt range) |
530 pF | ±200 mA | ±700 V |
PZD700A M/S (1.4 k volt ranges) |
270 pF | ±100 mA | +1.4 kV or -1.4 kV |
2205 | 300 pF | ±40 mA | ±500 V |
601C | 400 pF | ±10 mA DC ±20 mA peak AC |
±500 V or +1 kV or -1 kV |
PZD350A (±350 volt range) |
365 pF | ±200 mA | ±350 V |
PZD350A (700 volt ranges) |
230 pF | ±100 mA | +700 V or -700 V |
PZD350A M/S (±350 volt range) |
730 pF | ±400 mA | ±350 V |
PZD350A M/S (700 volt ranges) |
460 pF | ±200 mA | +700 V or -700 V |
2100HF | 150 pF | ±300 mA | ±150 V |
603 | 800 pF | ±40 mA DC or ±80 mA peak AC |
±125 V or +250 V or -250 V |
To see Trek’s entire line of high-voltage amplifiers please click here. |
where:
I = the peak current needed from the amplifier
C load = the load capacitance
X pF = the internal output capacitance of the amplifier
( in pico farads)
f = the maximum output frequency
Vpeak -to-peak = the peak-to-peak voltage applied to the capacitive load
where:
I = the peak current needed from the amplifier
C load = the load capacitance
X pF = the internal output capacitance of the amplifier
( in pico farads)
pi
= 3.14
f = the maximum output frequency
Vpeak-to-peak = the peak -to-peak voltage applied to the capacitive load