4EM-5

HgCdTe (MCT) Four-Channel Detection Module

3.5 – 6.0 µm, DC – 1 MHz, with photovoltaic four-element linear detector

4EM-5 is „all-in-one” IR multi channel detection module. Thermoelectrically cooled photovoltaic four-element linear detector, based on HgCdTe heterostructure, is integrated with transimpedance, DC coupled four-channel preamplifier, a fan and a thermoelectric cooler controller in a compact housing.

DATASHEET

Spectral response (Ta = 20°C)

Features

Four channels
Low crosstalk
Single power supply
Compatible with optical accessories

Specification (Ta = 20°C)

Parameter	Typical value
Optical parameters
Cut-on wavelength λ_cut-on (10%) µm	3.5±0.5
Peak wavelength λ_peak, µm	4.5±0.5
Optimum wavelength λ_opt, µm	5.0
Cut-off wavelength λ_cut-off (10%) µm	6.0±0.5
*Detectivity D(λ_peak), cm⋅Hz^1/2/W**	≥1.4×10⁹
*Detectivity D(λ_opt), cm⋅Hz^1/2/W**	≥1.2×10⁹
Output noise density v_n(100 kHz), nV/Hz^1/2	≤500
Electrical parameters
*Voltage responsivity R_v(λ_peak, R = 1 MΩ^)), V/W**	≥1.7×10⁵
*Voltage responsivity R_v(λ_opt, R = 1 MΩ^)), V/W**	≥1.6×10⁵
Low cut-off frequency f_lo, Hz	DC
High cut-off frequency f_hi, Hz	≥1M
Output impedance R_out, Ω	50
*Output voltage swing V_out(R = 1 MΩ^)), V**	0 – 4
Output voltage offset V_off, V	max ±20
Power supply voltage V_sup, V	+7.5
Power consumption, W	max 6
Other information
Active elements material	epitaxial HgCdTe heterostructure
Active areas A, mm×mm	4×(0.2×0.2)
Distance between active elements, mm	0.05
Window	pSiAR
Acceptance angle, Φ	~70°
Ambient operating temperature T_a, °C	10 to 30
Signal output sockets	4×MCX
Power supply socket	DC 2.1/5.5
Mounting hole	M4
Fan	yes
^*) R_L – load resistance

Mechanical layout, mm

Selected Line

Infrared detection module integrates infrared photodetector, signal processing electronics, optics, heat dissipation systems and other components in common package. Products selected on the basis of high functionality and intended for many applications such as leak detection, gas analysis, temperature control for fast moving objects. Additional advantages of integration are improved high-frequency (HF) performance, output signal standardization and miniaturization. Selected Product Line guarantees a short order fulfillment date and an effective price.

Configurable Line

A full range of preamplifiers dedicated to each type of VIGO System infrared detectors. The Configurable Line of modules enables the selection of the active area, type of preamplifier and bandwidth of the detection module. This makes it possible to adapt the module to the needs of your own application.

Accessories

We offer all the necessary accessories for our products. Electrical accessories such as thermoelectric cooler controllers and preamp power supplies. Mechanical accessories such as brackets for detectors and infrared modules, base mounting systems and cables dedicated to our products.

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If you need Evaluation Units, please contact us.

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