Ultra-Low-Noise Current Amplifier
Features
Bandwidth and Frequency Response Independent of
Detector-Capacitance (up to 10 nF)
Extremely Low Noise, 0.5 fA/√Hz Equivalent Input Noise Current
Bandwidth DC ... 30 Hz
Transimpedance (Gain) 2 x 1011 V/A
Applications
Photodiode- and Photomultiplier-Amplifier
Spectroscopy
Charge-Amplifier
Ionisation Detectors
Preamplifier for Lock-Ins, A/D-Converters, etc.
Specifications
Test Conditions
Vs = ± 15 V, Ta = 25°C
Warm-up 20 minutes (min. 10 minutes recommended)
Gain
Transimpedance
2 x 1011 V/A (>10 kΩ Load)
Accuracy
± 1%
Frequency Response
Lower Cut-Off Frequency
DC
Upper Cut-Off Frequency
30 Hz (- 3 dB)
Rise- / Fall-Time
12 ms (10% - 90%)
Gain Flatness
± 0.1 dB
Input
Equ. Input Noise Current
0.5 fA/√Hz (@ 10 Hz)
Equ. Input Noise Voltage
90 nV/√Hz (@ 10 Hz)
Input Bias Current
20 fA typ. / 30 fA max.
Input Bias Current Drift Factor
2 / 10 K
Offset Current Compensation
± 15 pA, Adjustable by Offset-Trimpot
Max. Input Current
± 50 pA (Linear Amplification)
Input Offset Voltage
< 0.5 mV
DC Input Impedance
1 kΩ (Virtual) // 5 pF
Output
Output Voltage
± 10 V (>10 kΩ Load)
Output Impedance
50 Ω (Terminate with >10 kΩ for best Performance)
Max. Output Current
± 10 mA (Linear Amplification)
Power Supply Supply Voltage
± 15 V
Supply Current
± 15 mA typ.
Case
Weight
210 gr. (0.5 lbs)
Material
AlMg4.5Mn, nickel-plated
Temperature Range
Storage Temperature
-40 ... +100 °C
Operating
Temperature 0 ... +60 °C
Absolute Maximum Ratings
Input Voltage
± 10 V
Power Supply Voltage
± 22 V
Connectors
Input
BNC
Output
BNC
Power Supply LEMO Series 1S, 3-pin Fixed Socket
Application Diagrams
Photo Detector Biasing in Photovoltaic Mode:
Use for Low Speed Applications and Minimum Dark Current.
Photo Detector
Biasing in Photoconductive Mode:
Use for Fast Applications and if More Dark Current is Tolerable. Bias Voltage Decreases Detector Capacitance.
Dimensions
商品属性 [频率] 30Hz [互导倒数] 2 x 1011 V/A [上升时间] 12ms