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Current Amplifiers
Variable-Gain Ultra-Low-Noise DDPCA-300

  • 0.4 fA peak-peak noise
  • Very high dynamic range: Sub-fA to 1 mA (>240 dB)
  • Transimpedance (Gain) switchable from 1 x 104 to 1 x 1013 V/A
  • Bandwidth up to 450 Hz, Rise Time down to 0.8 ms - Independent of Source Capacitance (up to 10nF)
  • Adjustable Bias-Voltage on Input Relative to Ground
  • Compact Housing for use close to the signal source
  • Protection against +2kV transients
  • Local and Remote Control
  • East to use:
    Convert your standard digital voltmeter or DAQ Board to a high-end Digital Sub-Femotamperemeter

Applications:

  • Photodetector amplifier
  • I/V characterization of small MOS structures
  • DC measurements of ultra low currents
  • Ionization detectors, mass spectrometry, quantum and biotech experiments
  • Spectroscopy
  • High resistance measurements
The LUCI-10 amplifier interface allows remote control of FEMTO amplifiers and photoreceivers with a remote control capability from a standard Windows PC with USB port.

Variable Gain Current Amplifier Comparison (pdf)

Click Part # to view pdf datasheet.

Model DDPCA-300
Performance Range Performance Depending on Gain Setting
Gain [V/A] 104 105 106 107 108 109 1010 1011 1012 1013
Upper Cut Off
Frequency [-3dB] [Hz]		 450 450 450 450 150 150 20 20 1.5 1.5
Rise Time(10%-90%) 0.8ms 0.8ms 0.8ms 0.8ms 2.3ms 2.3ms 20ms 20ms 200ms 200ms
Equ. Input Noise Current
[Peak-Peak]		 10nA 5nA 0.1nA 50pA 2pA 1pA 50 fA 50fA 1.5fA 1.5fA
Gain Drift (/șC) [%] 0.01 0.01 0.01 0.01 0.01 0.01 0.03 0.03 0.03 0.03
Max. Input Current
(+ Full Scale)		 1mA 0.1mA 10”A 1 ”A 0.1”A 10nA 1nA 0.1nA 10pA 1pA
DC Input Impedance (//5pF) <1Ω <1Ω <1Ω <1Ω <100Ω <100Ω <10Ω <10Ω <1MΩ <1MΩ
Low Pass Filter Switchable to 3 settings (full bandwidth, 0.7 Hz and 0.1 Hz)
Output Voltage ±10 V (@> 1MΩ load)
BIAS Voltage ±10 V at BNC input, adjustable
Power Supply ±15 V, +70 mA/-15 mA typ.

FEMTO Product Catalog (pdf)

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ELECTRO OPTICAL COMPONENTS, Inc.

FEMTO photoreceivers and amplifiers are available in North America exclusively from ELECTRO OPTICAL COMPONENTS, Inc.

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