The SE4002 is a low-noise, ultra-high input impedance preamplifier with excellent common-mode rejection. It is designed to work with any Saluki digital lock-in amplifier. The preamplifier minimizes noise and pickup in the connecting lines and reduces measurement time in noise-limited experiments.
SE4002 FET Input Preamplifier
Key Features
6nV//√Hz input noise
Gain of 10/20/50/100, manual adjustment
FET input, 10 MΩ input impedance
Gain accuracy 2%
High common mode rejection
1Hz - 300kHz Gain bandwidth
Single-ended and differential inputs
Ultra small size and portable
| Input Impedance | 10MΩ//8pF |
| Inputs | Single-ended or differential |
| Maximum Input | 70mVrms (overload) |
| Noise (typ.) | 5.6 nV/√Hz at 99.7 kHz 5.7 nV/√Hz at 9.7 kHz 6.2 nV/√Hz at 997 Hz 22.1 nV/√Hz at 9.7 Hz |
| Coupling | SAC (0.16Hz) |
| CMRT | > 100dB |
| Input Bandwidth | 1Hz – 300kHz |
| Gain | 10, 20, 50, 100 |
| Gain Accuracy | 2% (max.) |
| Outputs | A (signal, single-ended) B (shielded ground) |
| Maximum Output | 7 Vrms |
(Note: see more detail information in the ‘Resource’ – ‘Datasheet’) |
Main Machine
| Module No. | Item | Description |
| SE4002 | FET Input Preamplifier | 10 MΩ input impedance |
