HF2TA Current Amplifier

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The HF2TA current amplifier converts 2 input currents to an output voltage in a wide frequency range up to 50 MHz. This device is an active probe which can be conveniently placed close to the measurement setup. It supports most applications where a current must be converted to a voltage. The dedicated design of the HF2TA ensures stability and a smooth operation over the entire frequency range.

The HF2TA ideally fits to the HF2 Series with its single connector providing both power supply and remote control, and it can be controlled by the same graphical user interface of all HF2 Instruments.

HF2TA Key Features

  • Dedicated interface to HF2 Instruments (no direct PC link)
  • 50 MHz frequency range for wide range of applications
  • 2 independent amplification channels
  • Variable precision transimpedance gain settings
  • Integrated offset adjustment / compensation
  • Extremely low noise and low input leakage
  • Bias output for sensor power
  • Handy product design

HF2TA Resources

HF2TA Leaflet

HF2TA Compatible Instruments

HF2TA Applications

HF2TA Functional Diagram

HF2TA Current Amplifier Functional Diagram

HF2TA Specifications

Frequency Response
frequency range (3 dB cut-off)DC - 50 MHz (depends on R1,R2 settings)
frequency range with AC coupling10 Hz - 50 MHz (depends on R1,R2 settings)
small signal bandwidth (0.1 Vpp)50 MHz
large signal bandwidth (1 Vpp)40 MHz
Input
input current range1 nA - 10 mA (depends on R1,R2,G1,G2 settings)
input noise current50 fA - 150 pA (depends on R1,R2,G1,G2 settings)
input noise voltage (10 kHz)5 nV/√Hz
input offset adjustment range±10 mV
input current leakage (typical)2 pA
input impedance (DC, Z // 15 pF)50 Ω - 70 kΩ
input bias voltage range±10 V
Gain
transimpedance gain (R1,R2)100 V/A - 100 MV/A
gain accuracy±1%
output voltage gain (G1,G2)G=1 or G=10
Auxiliary Output
typical usebias for external sensor (ex: photodetectors)
voltage range±10 V
maximum current drive10 mA