Stanford Research Systems SR570 Low-Noise Current Preamplifier
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Stanford Research Systems SR570 is a low-noise current preamplifier with 5 fA/√Hz input noise, sensitivity from 1 pA/V to 1 mA/V, and 1 MHz bandwidth for photonic measurements.
Product details
| Model | SR570 |
| Manufacturer | Stanford Research Systems |
| Category | RF Power Meters |
| Availability | Made to order |
Description
Overview
The Stanford Research Systems SR570 is a low-noise current preamplifier designed for photonic, low-temperature, and other precision measurements. With input noise as low as 5 fA/√Hz and maximum sensitivity of 1 pA/V, it offers exceptional performance for measuring extremely small currents. The instrument provides multiple gain allocation modes to optimize performance based on specific application requirements.
Key Features
- 5 fA/√Hz input noise — one of the lowest available
- Sensitivity from 1 pA/V to 1 mA/V in 1-2-5 sequence
- 1 MHz maximum bandwidth
- Vernier gain adjustment for intermediate sensitivity values
- Three gain allocation modes: Low Noise, High Bandwidth, and Low Drift
- Two configurable first-order RC filters (0.03 Hz to 1 MHz)
- Adjustable input DC bias voltage (±5 V)
- Variable input offset current (±1 pA to ±1 mA)
- RS-232 interface and line or battery operation
Applications
- Photonic and optical measurements
- Low-temperature and cryogenic applications
- Photodiode and photomultiplier tube readout
- Electrochemical and sensor measurements
Specifications
| Input Noise | 5 fA/√Hz |
| Gain Range | 1 pA/V to 1 mA/V |
| Maximum Bandwidth | 1 MHz |
| Gain Adjustment | 1-2-5 sequence with vernier |
| Filter Range | 0.03 Hz to 1 MHz |
| Bias Voltage Range | ±5 V |
| Offset Current Range | ±1 pA to ±1 mA |
| Gain Allocation Modes | Low Noise, High Bandwidth, Low Drift |
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Stanford Research Systems SR570 Low-Noise Current Preamplifier
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