Description
Chapter
1
1-1
1.1 Description
The model 5184 is a medium-impedance (5 M
Ω
), AC-coupled, voltage preamplifier
which features an ultra low-noise FET input stage (800 pV/
√
Hz at 1 kHz). It has a
frequency range of 0.5 Hz to 1 MHz and a fixed gain of 60 dB (×1000). The 5184 is
ideal for use with medium impedance cryogenic sources and IR detectors such as
HgCdTe, InSb and InAs.
The model 5184 incorporates a special input stage which can be floated to give the
ground loop immunity normally associated with differential inputs, without the usual
accompanying noise penalty of the input devices required in differential circuits.
The model 5184 can be powered from its own internally housed (alkaline) batteries, an
external low voltage supply (±15 V or ±18 V DC) or from a line power supply via the
model PS0108 (optional extra). It can also be powered from most PerkinElmer
Instruments lock-in amplifiers. Connection of external power to the instrument is by a
5-way DIN connector on the rear panel.
Figure 1-1, Model 5184 Front Panel
Figure 1-2, Model 5184 Rear Panel
