Overview
The model 5184 is a medium input impedance, AC-coupled, voltage preamplifier which features an ultra low-noise input stage. It has a frequency response from 0.5 Hz to 1 MHz and a fixed gain of x1000 (60 dB) and incorporates a special pseudodifferential input stage that can be floated to give the ground loop immunity normally associated with true differential inputs but without the associated noise penalty. 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.
The model 5184 is ideal for use with medium impedance cryogenic sources and IR detectors, such as HgCdTe, InSb and InAs.
- Medium input impedance
- Ultra low noise
- Pseudo-differential input
- Fixed x1000 gain
- 0.5 Hz to 1 MHz frequency response
- Battery or external DC power
- Cryogenic detector amplification
Specifications
General
AC coupled voltage amplifier with fixed x1000 (60dB) voltage gain and a maximum frequency reponse extending from 0.5 Hz to 1 MHz. Pseudo-differential input and single-ended output via BNC connectors.
Battery powered from internal alkaline batteries or external DC power supplies.
| Inputs | |
| Modes | Asymmetrical differential. Front panel ground terminal provided. |
| Coupling | AC |
| Impedance | 5 MΩ//50 pF |
| Frequency Response | 0.5 Hz – 1 MHz |
| C.M.R.R. | >80 dB (100 Hz to 1 kHz) |
| Max differential input voltage | 10 mV pk-pk |
| Max common–mode input voltage | 300 mV pk-pk |
| Max single low potential w.r.t. ground terminal | ±600 mV |
| Max input without damage | ±15 V DC or 10 V rms. AC @ 50 Hz |
| Noise | See Figure 1; typ 800 pV/ Hz @ 1 kHz |
| Gain | x1000 (60 dB) fixed |
| Gain Accuracy | ±1% |
| Gain Stability | ±800 ppm/ºC |
| Output | |
| Impedance | 450Ω |
| Max voltage swing | >10 V pk-pk |
| Slow rate | >22 V/µs |
| Polarity | Non-inverting |
| Distortion | < 0.1% T.H.D. |
| Power | |
| Internal | Four 9 V alkaline batteries provide approximately 8 hours of use |
| External | |
| a) | ±15 V or ±18 V DC @ 40 mA |
| 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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