可變增益DDPCA-300電流放大器是的大范圍的噪音的互阻放大器。它具有特殊的設(shè)計(jì)，可以實(shí)現(xiàn)使輸入噪音降至0.2fA/√Hz和0.4fA的峰值范圍內(nèi)。我們可以通過手動(dòng)或者遠(yuǎn)程接口得到可變增益范圍在104-1013 V/A。放大器覆蓋了一個(gè)zui大電流動(dòng)態(tài)范圍超過240dB的測量值，從Sub femto(毫微微)到毫安的測量只需要一個(gè)簡單的開關(guān)。為了避免信號干擾和長線造成的噪聲，外殼需要充分地接近信號源。各種過濾器集成改變放大器帶寬的變化信號狀態(tài)。因此，信號測聲比和測量速度也足以實(shí)時(shí)測量毫微微安培電流，不需要額外的求平均值或者長時(shí)間的測試周期。
| Model | DDPCA-300 | |||||||||
| 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) | 7nA | 7nA | 70pA | 70pA | 1.2fA | 1.2fA | 50fA | 50fA | 2fA | 2fA |
| 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.) | |||||||||
