Current /Transimpedance Amplifiers

DC up to 400 kHz Ultra Low Noise Fixed Gain LCA

• Input noise down to 180 aA/√Hz
• Bandwidth up to 400 kHz
• Gain up to 10¹³ V/A
• Flat frequency response
• EMI-shielded case

DC up to 400 MHz High Speed Fixed Gain HCA

• Input noise down to 270 fA/√Hz
• Bandwidth up to 400 MHz
• Gain up to 10⁶ V/A
• Flat frequency response
• Stabilized and adjustable bias voltage output for biasing external photodiodes
• EMI-shielded case

Sub Femto Ampere Sensitivity Variable Gain DDPCA

• 0.4 fA peak-to-peak noise
• Transimpedance gain from 10⁴ to 10¹³ V/A
• 240 dB dynamic range for sub-fA to mA measurements
• Adjustable voltage on input for DUT biasing
• Compact housing for use close to the signal source
• Manual and remote control

DC up to 500 kHz Low Noise Variable Gain DLPCA

• Transimpedance gain from 10³ to 10¹¹ V/A
• Input noise down to 4.3 fA/√Hz
• Bandwidth up to 500 kHz
• Rise time down to 700 ns
• Adjustable bias voltage
• Manual and remote control

DC up to 200 MHz High Speed Variable Gain DHPCA

• Transimpedance gain from 10² to 10⁸ V/A
• Bandwidth up to 200 MHz
• Rise time down to 1.8 ns
• Internal signal filters
• Adjustable bias voltage
• Manual and remote control

GHz-Wideband Amplifiers

Suitable as Current and Voltage Amplifiers 

10 kHz to 2.5 GHz Fixed Gain HSA

• Ultra-wide bandwidth from 10 kHz up to 2.5 GHz
• Gain up to 60 dB (x 1,000)
• Transimpedance gain with photodetectors up to 50,000 V/A
• Very low input noise down to 310 pV/√Hz (6.2 pA/√Hz)
• Integrated DC-current path for biased photodetector applications
• Two identical signal outputs (HSA-Y series)
• DC-monitor output (HSA-Y series)

1 kHz to 1.2 GHz Variable-Gain 50 Ω Input DUPVA

• Variable gain up to 70 dB (approx. x3000), switchable in 10 dB steps
• Bandwidth 1 kHz to 1.2 GHz
• Bandwidth independent of gain setting (guaranteed)
• Noise figure down to 1.9 dB (330 pV/√Hz)
• Local and remote gain control

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