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Model 5186
Differential Voltage Preamplifier
General
The model 5186 is a high input impedance, low-noise, AC-coupled, voltage
preamplifier which offers a true differential input. It has a frequency
response from 0.5 Hz to 1 MHz and three switched gain settings of ×10, ×100
and ×1000. It is a general purpose preamplifier which has the facility to
be connected to grounded sources in a manner which breaks ground loops and
since it has a truly differential input it can be used to measure floating
sources, such as the output from an AC bridge, without imposing an
asymmetrical load onto the source. It can be powered from its own
internally housed (alkaline) batteries, an external low voltage supply (±15
V or ±18 V) or from the model PS0108 remote line power supply
(optional extra). This preamplifier can also be powered from most of our
range of lock-in amplifiers and from the model 7310 noise rejecting
voltmeter.
Noise Figure Contours (Typical)
| Input |
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Configuration |
BNC connectors, true
differential. |
|
Coupling |
AC |
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Impedance |
100 MΩ // 20 pF |
|
Frequency Response |
0.5 Hz to 1 MHz |
|
C.M.R.R. |
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x1000 gain |
> 110 dB (100 Hz
to 1 kHz), degrading by 6 dB/octave above 1 kHz |
|
x10 or
x100 gain |
> 90 dB (100 Hz
to 1 kHz), degrading by 6 dB/octave above 1 kHz |
|
Max common-mode input
voltage, x1000 gain |
5 V pk-pk |
|
Max input without damage |
±15 V DC or 10 V
rms. AC @ 50 Hz |
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Noise |
see noise figure contours
above. Typically 4 nV/root Hz @ 1 kHz and x1000 gain, 10 nV/root
Hz @ 1 kHz and x10 or x100 gain |
|
Gain |
x10, x100 or x1000 switch
selectable |
|
Gain Accuracy |
±1% |
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Gain Stability |
±150 ppm/degree C |
| Output |
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Impedance |
450 Ω |
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Max voltage swing |
>10 V pk-pk |
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Slew rate |
> 22 V/µs |
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Polarity |
Non-inverting |
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Distortion |
< 0.01% T.H.D. |
| Power |
Internal |
Four 9 V alkaline
batteries provide approximately 12 hours of use |
|
External |
a) ±15 V or ±18
V DC @ 27 mA |
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b) 110 V AC or 240 V AC via
optional external model PS0108 power supply |
| Dimensions
(excluding connectors) |
8.25" wide x 11"
deep x 3.5" high
(210 mm wide x 279 mm deep x 89 mm high) |
| Weight |
5.3lbs (2.4 kg)
excluding power supply |
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is
a trademark of AMETEK, Inc.