SR560 Low-Noise Voltage Preamplifier0 pages

Low-Noise Voltage Preamplifier
SR560 — DC to 1 MHz voltage preamplifier
SR560 Low-Noise Preamplifier
· 1 MHz bandwidth
The SR560 is a high-performance, low-noise preamplifier
that is ideal for a wide range of applications including low
temperature measurements, optical detection, and
audio engineering.
· Variable gain from 1 to 50,000
Inputs
· AC or DC coupled
The SR560 has a differential front-end with 4 nV/√Hz input
noise and an input impedance of 100 MΩ. Complete noise
figure contours are shown in the SR560 Tech Note at the
end of this section. The SR560’s inputs are fully floating
(BNC shields are not connected to chassis ground). Both the
amplifier ground and the chassis ground are available on the
rear panel for flexibility in grounding the instrument. Input
offset nulling is accomplished by a front-panel potentiometer,
accessible with a small screwdriver.
· 4 nV/√Hz input noise
· Two configurable signal filters
· Differential and single-ended inputs
· Line or battery operation
· RS-232 interface
In addition to the signal inputs, a rear-panel TTL blanking
input lets you quickly turn off and on the instrument’s gain.
This is useful in preventing front-end overloading. The gain
turns off 5 µs after the TTL level goes high, and back on again
within 10 µs after the TTL signal goes low.
Outputs
Two insulated output BNC connectors provide 600 Ω and
50 Ω outputs. Both are capable of driving 10 Vpp into
their respective loads. Two rear-panel power supply outputs
· SR560 ... $2395 (U.S. list)
Stanford Research Systemst
phone: (408)744-9040
www.thinkSRS.com