CVA-5M-4K TIA weak current amplifier 5MHZ bandwidth fixed gain multiple 4KΩ
CVA-5M-4K is a rated bandwidth, fixed gain current-flow voltage amplifier for detecting weak current signals. The weak current signal is input through the SMA interface of the converter, and the output is output as a voltage through the BNC. For details about performance parameters, see the appendix table. CVA-5M-4K current-flow voltage amplifier housing with inch 1/4″-20 threaded mounting holes for easy mounting and fixing. The product includes a plastic dust cover.
Each current voltage amplifier is equipped with a linear DC power supply with a 9V output rated input voltage of 220VAC/5OHZ
CVA-5M-4K TIA weak current amplifier 5MHZ bandwidth fixed gain multiple 4KΩ
Appearance and installation
CVA-5M-4K TIA weak current amplifier 5MHZ bandwidth fixed gain multiple 4KΩ
The CVA-5M-4K current-flow voltage amplifier is housed in a strongly shielded aluminum housing (53*50*50mm). The electrical connection and switch are located on the rear side housing of the photodetector.
This product uses a small volume, convenient installation and use in a narrow space. Strong inch 1/4-20 threaded mounting holes at the bottom of the casing allow easy installation on common test support rods or tripod threads
CVA-5M-4K TIA weak current amplifier 5MHZ bandwidth fixed gain multiple 4KΩ
Working principle
CVA can mainly be used to test pulse current signal or AC current signal. The interior includes a fixed gain cross-group amplifier to match. The current signal is input by the SMA interface and converted into a voltage signal with a matching fixed-gain cross-group amplifier. A fixed bias circuit is included in the system to ensure that the system output bias voltage is close to OV when there is no current input. After the CVA-5M-4K converter passes through the bias circuit, the bias voltage (the voltage output in the absence of current input) can be controlled within 5mV. A power drive circuit is also integrated inside the system to drive the BNC adapter and the 50Q impedance adapter to ensure the linearity of the wide voltage output. When the output load is high resistance state, the linear output voltage can reach 5V. When the output load is 50 ohm impedance matching, the linear output voltage can reach 2.5V.
| Electrical characteristics | |
| Input voltage | +/-9V DC, 100mA |
| Input current (max) | 1.3 mA |
| bandwidth | DC – 5MHz (Cin: 230pF) |
| Dark bias voltage (max) | ±5 mV |
| Rising/falling edge (10%-90%) | 70 nS |
| Output voltage | |
| Hi-Z | 0 – ±5V (Hi-Z) |
| 50Ω | 0 – ±2.5V (50Ω) |
| Gain multiple | |
| Hi-Z | 4 kV/A |
| 50Ω | 2 kV/A |
| Gain accuracy (typ) | ±1% |
Other parameters
| switch | Toggle switch |
| Output interface | BNC |
| dimension | 53*50*50mm |
| weight | 150g |
| Operating temperature | 10°C – 50°C |
| Storage temperature | -25°C -70°C |
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