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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
Low Noise Input/Output Cable: CAB-LN1 Low Noise Cable
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

Click Part # to view pdf datasheet.

Model DDPCA-300
Performance Range Performance Depending on Gain Setting
Transimpedance [V/A] 104 105 106 107 108 109 1010 1011 1012 1013
Bandwidth [-3dB] [Hz] 400 400 400 400 150 150 20 20 1 1
Rise Time(10%-90%) 0.8ms 0.8ms 0.8ms 0.8ms 2.3ms 2.3ms 17ms 17ms 350ms 350ms
Equ. Input Noise /Hz 45pA 45pA 0.45pA 0.45pA 15fA 15fA 1.3fA 1.3fA 0.2fA 0.2fA
Low Pass Filter Switchable to 0.1 Hz, 0.7 Hz or Full Bandwidth
Output Performance ±10 V (@> 1MΩ load)
BIAS Voltage ± 10 V, Adjustable by Trimpot or External Control Voltage, max. 10 mA, Connected to Center Pin of BNC Input Socket
Power Supply ±15 V, +70 mA/-15 mA typ.
Control Interface 4 Opto-Isolated Digital Inputs, TTL/CMOS Compatible, Analog Bias Control Voltage Input
Interface Software Option LUCI-10 Control Interface Software and Hardware option
Case 170 x 60 x 45 mm (L x W x H), Weight 320 g (0.74 lbs)
Offset adjustable by trimpot. LED overload indication. Input protected against ± 2 kV transients. Output short-circuit protected. Power supply via 3-pin LEMO socket. A mating connector is provided with the device. Optional power supply PS-15 is available. For further information, please view datasheets.

FEMTO Product Catalog (pdf)

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