Stanford Research SR550 FET Voltage Preamplifier

The SR550 Voltage Preamplifier is designed to work with SRS lock-in amplifiers. Preamplifiers provide gain close to the experimental detector, before the signal-to-noise ratio is permanently degraded by cable capacitance and pickup. The SR550 minimizes noise and pickup in the connecting lines and reduces measurement time in noise-limited experiments. Power and control signals are brought from the lock-in by a 9-pin cable. The SR550 may also be operated independently by applying appropriate biasing (±20 VDC, +5 VDC).

Features:

• 3.6 nV/√Hz Input Noise
• FET Input, 100 MΩ Input Impedance
• Gain of 1, 2, 5 or 10
• Single-ended and Differential Inputs
• AC Coupled Input
• Powered by SRS Lock-in Amplifiers
• High Common Mode Rejection

Please see Datasheet for complete details and specifications.