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Model 5188B
Optical Input Preamplifier
General
The model 5188B preamplifier has a silicon photodiode input and is
designed to be used as a light to voltage converter where the signal to be
amplified is derived from an optical source in the visible region of the
electromagnetic spectrum. Sensitivity is switch-selectable, with a choice
of five settings, which enables the amplifier to detect fractions of a
picowatt, without noise degradation, on its most sensitive range, while
being able to accept optical power of up to 18 mW on its least sensitive
range without overload.
The instrument has bandwidths from 25 kHz on its most sensitive
range to 1 MHz on its least sensitive range. Input noise ranges from
180 fW/ÖHz to 25 pW/ÖHz, depending on the sensitivity setting selected.
An additional low-noise range, denoted 10-8 W/V LOW NOISE, is also
provided, this setting having a reduced bandwidth of 10 kHz.
Input signal connection is made via an FC/PC optical connector on the
front panel of the unit. AC and DC components of the input signal are
processed such that independent outputs for each are made available via
BNC connectors, also on the front panel. This will allow users to measure
modulated and CW components of an input signal separately and perform, for
example, ratios between them.
The model 5188 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.
| Input |
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|
Connector |
FC/PC |
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Device Type |
|
|
5188B |
Si |
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Operating Wavelength |
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5188B |
400 nm to 1000 nm |
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Sensitivity |
Switch selectable (5
settings) |
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AC Output |
10-5, 10-6,
10-7, 10-8, 10-8 low noise W/V |
|
DC Output |
10-3, 10-4,
10-6, 10-7, 10-8 W/V |
|
Calibration Factor |
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|
5188B |
Sensitivity setting x 2.2 at
830 nm |
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Accuracy |
±2% |
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Stability |
±300 ppm/degree C |
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Frequency Response |
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10-5
W/V setting |
0.5 Hz to 1 MHz |
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10-6
W/V setting |
0.5 Hz to 800 kHz |
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10-7
W/V setting |
0.5 Hz to 200 kHz |
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10-8
W/V setting |
0.5 Hz to 25 kHz |
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10-8
W/V low noise
setting |
0.5 Hz to 10 kHz |
|
Max Optical Power at input |
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10-5
W/V setting |
518 mW |
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10-6
W/V setting |
1.8 mW |
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10-7
W/V setting |
18 µW |
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10-8
W/V setting |
1.8 µW |
|
10-8
W/V low noise
setting |
180 nW |
| Output |
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AC Output |
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Impedance |
450 W |
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Max
voltage swing |
> 10 V pk-pk |
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Slew rate |
> 22 V/µs |
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Noise, rms. referred to input |
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10-5
W/V setting |
25 pWÖHz |
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10-6
W/V setting |
15 pWÖHz |
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10-7
W/V setting |
350 fWÖHz |
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10-8
W/V setting |
180 fWÖHz |
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10-8
W/V low noise
setting |
150 fWÖHz |
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DC Output |
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Impedance |
10 kW |
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Max
voltage swing |
> ±9 V |
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Output due to photodiode dark
current, max |
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10-3
W/V setting |
10 µV |
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10-4
W/V setting |
100 µV |
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10-6
W/V setting |
10 mV |
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10-7
W/V setting |
5100 mV |
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10-8
W/V |
51 V |
| Power |
Internal |
Four 9 V alkaline
batteries provide approximately 15 hours of use |
|
External |
a) ±15 V or ±18
V DC @ 25 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 |
5.3 lbs. (2.4 kg)
excluding power supply |
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is
a trademark of AMETEK, Inc.