Ultra-low noise current amplifier

PRODUCTS > PHOTONICS > ULTRA-LOW NOISE CURRENT AMPLIFIER
CNA100 - Ultra-low noise current amplifier
CNA100 - Ultra-low noise current amplifier CNA100 - Noise floor CNA100 - Frequency response CNA100 - Mechanical dimensions

Koheron CNA100 is a current amplifier designed for the characterization of laser drivers. The ultra-low current noise floor of 120 pA / √Hz is obtained by sensing the voltage across a 5 Ω precision resistor with an instrumentation amplifier with less than 600 pV / √Hz input-referred voltage noise and 2.6 MHz bandwidth. The DC voltage across the precision resistor is also available on a screw terminal.

295 €

CNA100-500
500 mA current

Quantity Price
1+ 295 €
4+ 265 €
20+ 220 €

Resources

Specifications

Reference CNA100-500
Current amplifier
Maximum current 500 mA
Sensing resistor 5 Ω
Noise floor 120 pA / Hz1/2
Gain (low setting) 10 kV / A
Gain (medium setting) 50 kV / A
Gain (high setting) 200 kV / A
Coupling AC
3 dB bandwidth 1.4 Hz - 2.6 MHz
0.1 dB bandwidth 10 Hz - 300 kHz
Output impedance 50 Ω
Other
Dimensions 63 mm x 52.7 mm x 13.1 mm
Weight 31 g
Positive supply voltage 6 V to 12 V
Negative supply voltage -12 to -6 V
Operating temperature 0 °C - 50 °C

Characterization

Noise floor

The figure below shows the input-referred current noise density of the CNA100-500 (no current was flowing across the 5 Ω sensing resistor).

CNA100 current noise density

Frequency response

CNA100 frequency response


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