Preamplifiers for Infrared Detectors
- Technology
- Infrared photodetectors
- Partner
- Infrared Associates
Infrared Associates offer preamplifiers for photoconductive MCT (HgCdTe) as well as for photovoltaic indium antimonide (InSb) detectors.
The preamplifiers are specially adapted to the respective IR detector to achieve an optimal signal/noise ratio. Gain and bias are variable adjustable and bandwidths up to 1MHz and higher can be achieved.
Principle
The MCT-1000 series has been specifically developed for operation with photoconductive MCT detectors. The low noise and variable adjustment of the gain, combined with a precise, adjustable bias, provide an ideal complement to our MCT detectors.
The MCT-1000 preamplifier provides the MCT detector with all the interface circuits required for optimal operation. No external preload or load resistors are required.
The MCT detector is connected to the input BNC connector with an SMA-BNC cable, which is typically supplied with the detector. Positive and negative 15-volt DC power supplies with at least 200mA (+ 15V) and 100mA (-15V) output are required. The detector preload is provided internally, and the preload (or current) is adjustable from typically 0 V to + 2.5 V. The electrical bandwidth is set internally to 1.5Hz to 150kHz. Other bandwidths (up to 1MHz) are available.
An adjustable gain typically delivers variable signal amplitude from 50 to 1000 times. The bias voltage and amplification are affected by the detector impedance, and since all detectors in the resistance are slightly different, there will be a slight variation in the maximum preload and gain.
Downloads
for Preamplifiers for Infrared Detectors
What’s in this range?
All the variants in the range and a comparison of what they offer
Available MCT and InSb preamplifiers
| Model | Type | Bandwidth | Gain |
|---|---|---|---|
MCT-1000 | PC – HgCdTe | 1.5Hz- 150kHz | 50 – 1000 |
MCT-1000DC | PC – HgCdTe | DC – 150kHz | 50 – 1000 |
MCT-1000H | PC – HgCdTe | 1.5Hz – 150kHz | 200 – 4000 |
MCT-1000HS | PC – HgCdTe | 500Hz – 1.0 Mz – 1Hz | 50 – 1000 |
PVMCT-1000 | PV – HgCdTe | 1.5Hz – 150kHz | 5 – 100 |
InSb-1000 | PV – InSb | 1.5Hz – 200kHz | 5 – 100 |
InSb-1000DC | PV – InSb | DC – 200kHz | 5 – 100 |
InSb-1000HS | PV – InSb | 500Hz – 1.0MHz | 2.5 – 30 |
