Sub Femto Ampere Sensitivity Variable Gain
Model |
DDPCA-300 |
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|---|---|---|---|---|---|---|---|---|---|---|
| Transimpedance [V/A] | 104 | 105 | 106 | 107 | 108 | 109 | 1010 | 1011 | 1012 | 1013 |
| Bandwidth* (-3 dB) [Hz] | 400 | 400 | 400 | 400 | 150 | 150 | 20 | 20 | 1 | 1 |
| Rise Time* (10 % - 90 %) [ms] | 0.8 | 0.8 | 0.8 | 0.8 | 2.3 | 2.3 | 17 | 17 | 350 | 350 |
| Integrated Input Noise* (Peak-Peak) | 7 nA | 7 nA | 70 pA | 70 pA | 1.2 pA | 1.2 pA | 50 fA | 50 fA | 2 fA | 2 fA |
| Spectral Input Noise Density [/√Hz] | 45 pA | 45 pA | 0.5 pA | 0.5 pA | 15 fA | 15 fA | 1.3 fA | 1.3 fA | 0.2 fA | 0.2 fA |
| Accuracy Performance | Gain ±1 % | |||||||||
| Adjustable Low Pass Filter | 3 settings: full bandwidth, 0.7 Hz and 0.1 Hz | |||||||||
| Output Performance | ±10 V, ±30 mA | |||||||||
| Bias Voltage | ±10 V, max. 10 mA, connected to amplifier input, adjustable by trimpot or remote control voltage | |||||||||
| Power Supply | ±15 V, +70 mA / -15 mA typ., ±150 mA recommended | |||||||||
| Control Interface | 4 opto-isolated digital inputs, TTL/CMOS compatible, analog bias control voltage input | |||||||||
| Case | 170 x 60 x 45 mm (L x W x H), Weight 320 g (0.74 lb.) | |||||||||
* The values for bandwidth, rise time and integrated input noise stated in the table above are achieved with the low pass filter set to full bandwidth. Lower peak-to-peak noise values can be achieved by setting the low pass filter to 0.7 Hz or 0.1 Hz. The minimum peak-to-peak noise of 0.4 fA is achieved in the gain settings 1012 and 1013 V/A with the low pass filter set to 0.1 Hz.
Offset adjustable by trimpot. Overload indication by LED and digital control output. Input protected against ±2 kV transients. Output short-circuit protected.
Offset adjustable by trimpot. Overload indication by LED and digital control output. Input protected against ±2 kV transients. Output short-circuit protected.