.jpg){kind=small}
PLUTO INSTRUMENTS
PCG-MINI
The PCG-MINIs are a line of highly specialized, compact, fixed-gain current preamplifiers that are designed to offer exceptional performance in cryogenic spectroscopy applications. They are particularly suitable for detecting tiny quantum tunneling currents due to their ability to maintain ultra-low noise levels while providing reasonable bandwidth to amplify the very tiny currents.
The PCG-MINIs are crafted with a focus on maintaining high-performance levels. They are engineered to deliver extremely low noise with very necessary signal bandwidth, making them an ideal choice for use in research applications where ultra-low noise measurements are critical.
The compact size of the PCG-MINIs also offers a distinct advantage. Their small form factor makes them an ideal choice for use in small spaces, such as the top flange of cryogenic systems or very complicated UHV chamber setups. This feature, combined with their ultra-low noise levels and high-performance capabilities, makes the PCG-minis an optimal solution for quantum tunneling current amplification in a variety of research applications.
The PCG-MINIs offer an exceptional solution for researchers seeking high-performance preamplifiers that can amplify very tiny tunneling currents with ultra-low noise levels. Their compact size and unique features make them an ideal choice for use in scanning tunneling microscopy research and quantum transport research, where ultimate low noise performance is paramount.
PCG-MINI-9G
1. PCG-MINI-9G has a signal bandwidth of ~4 kHz and it is stable in the presence of 1 nF input capacitance.
2. Noise floor is 4 fA/√Hz.
3. High sensitivity RMS voltmeter reads full band integrated output voltage noise (input current noise) as
a. ~ 400 µVrms (400 fArms) for shielded open input
b. ~ 740 µVrms (740 fArms) for 200 pF input capacitance
c. ~3.6 mVrms (3.6 pArms) for 1 nF input capacitance
4. Input bias current is less than 100 fA.
5. Input offset voltage can be trimmed for precision measurement and higher power supply rejection ratio.
PCG-MINI-10G
1. PCG-MINI-10G has 10 times higher sensitivity relative to 9G unit. A true single 10 GΩ feedback resistor used.
2. Noise floor is 1.3 fA/√Hz.
3. Signal bandwidth is ~ 3 kHz. (stray capacitance ~5 fF)
4. Stable in the presence of 1 nF input capacitance
(perfectly stable up to 0.5 nF)
5. High sensitivity RMS voltmeter reads full band integrated output voltage noise
(input current noise) as
a. ~ 1.2 mVrms (120 fArms) for shielded open input
b. ~ 4 mVrms (400 fArms) for 200 pF input capacitance
c. ~ 10 mVrms (1 pArms) for 500 pF input capacitance
6. Input offset voltage can be trimmed for precision measurement and a higher power supply rejection ratio.
The noise spectral density plots (open and in the presence of 1 nF input capacitance) show that PCG-MINIs' noise floors are virtually the same as the theoretical limits of the feedback resistors' noises