| |
|
|
|
|
- 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
|
|
|
 |
|
The SR550 Voltage Preamplifier is designed to work with any SRS
lock-in amplifier. Preamplifiers provide gain close to the experimental
detector, before the signal-to-noise ratio is permanently degraded
by cable capacitance and pickup. The preamplifier minimizes noise
and pickup in the connecting lines and reduces measurement time
in noise-limited experiments. When used with the SR510 or SR530,
the preamplifier gain is automatically chosen to optimize noise
performance without compromising dynamic reserve. When used with
the SR810, SR830 or SR850, the preamplifier gain is automatically
set to its maximum value. Power and control signals are brought
from the lock-in by a 9-pin cable (included). The SR550 may also
be operated independently from the lock-ins by applying appropriate
biasing (±20 VDC, +5 VDC).
|
|
| Specifications |
|
| General |
|
|
|
| Input impedance |
100 MΩ + 25 pF |
| Inputs |
Single-ended or differential |
| Maximum input |
250 mVrms for overload 100 VDC, 10 VAC damage threshold |
| Noise (typ.) |
3.6 nV/√Hz at 1 kHz
4.0 nV/√Hz at 100 Hz
13 nV/√Hz at 10 Hz |
| Coupling |
AC (0.016 Hz) |
| CMRR |
90 dB at 100 Hz, 1 V input |
| Gain |
1, 2, 5, 10 (automatically set by SR510 or SR530 lock-in
amplifier) |
| Full scale input |
10 nV to 200 mV |
| Gain accuracy |
2 % (2 Hz to 100 kHz) |
| Gain stability |
100 ppm/°C |
| Outputs |
A (signal, 600 Ω, single-ended)
B (shielded ground)
|
| Maximum output |
7 Vpp |
| Power |
Supplied by SR510, SR530, SR810, SR830 or SR850 via
connector cable |
| Dimensions |
3.0" × 1.3" × 5.1"
(WHL) |
| Weight |
1 lbs. |
| Warranty |
One year parts and labor on defects in materials
and workmanship |
Stanford Research Systems, Inc. • 1290-D
Reamwood Ave., Sunnyvale, CA 94089
Phone: (408) 744-9040 • Fax: (408) 744-9049 • email: info@thinkSRS.com
• www.thinkSRS.com
© Stanford Research Systems, Inc. 2003
|
|
