SRS SR446 - 400 MHz Preamplifier
Availability: In stock
Product Code:
75124
Manufacturer: Stanford Research Systems
Special Price £1,911.87 £2,294.24 Regular Price £1,971.00 £2,365.20
- 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
The Stanford Research Systems 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.
The front panel displays all the setup and the state of the instrument. Users can perform all the configurations from the front panel or remotely through the USB interface (in serial port emulation).
| Input channels | 1 |
| Input configuration | 50 Ω, 500 Ω, AC /DC coupling, ground |
| Operating range |
Max. input: ±0.5 V Max. output: ±0.65 V (or ±1.3 V differential) |
| Output channels | 2 (+OUT and –OUT) |
| Output impedance | 50 Ω |
| Bandwidth | DC to 400 MHz (–3 dB) |
| Bandwidth limit | Full BW, 200 MHz, 100 Hz, 20 kHz |
| Rise/fall time | <1 ns |
| Voltage gain | 1 to 100 (0 dB to 40 dB in 2 dB steps) |
| Gain flatness | 0.3 dB (DC to 100 MHz) |
| Gain accuracy | ±0.5dB (at 1 MHz) |
| Input noise | 3.3 nV/√Hz at 1 MHz (max.gain) |
| Skew (typ.) | 20 ns between +OUT and –OUT |
| Propogation delay | 4.5 ns (typ.) |
| Overload recovery | 12 ns (typ.) |
| Input clamp | ±1.5 V (typ.) |
| Output overload | ±0.7 V (typ.) into 50 Ω load |
| Computer interface | USB |
| Operatng temperature | 0 °C to 40 °C, non-condensing |
| Dimensions | 8.3" × 1.5" × 8" (WHD) |
| Power | 5 W, 100 to 240 VAC, 50/60 Hz |
| Warranty | One year parts and labour on defects in materials and workmanship |
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