SRS
SR446– 400 MHz preamplifier
Overview
The SR446 is a single-channel, 400 MHz bandwidth voltage preamplifier with 21 programmable gains from ×1 to ×100 (+0 dB to +40 dB with 2 dB steps). It also includes four programmable low-pass filters, with settings of full bandwidth, 200 MHz, 100 MHz and 20 MHz. There are two output channels which offer complimentary outputs (inverting and non-inverting) that can be used separately, or together as a differential output.
Key Features
- DC to 400 MHz bandwidth (all gain settings)
- Differential output
- 0.3 dB gain flatness
- 3.3 nV/√Hz input noise (@1 MHz)
- Voltage gain to from ×1 to ×100
- 50 Ω input and output impedance
- USB computer interface
