AD131 光电探测器模块 190nm to 4.8μm

AD131是一款针对光电探测器的计算机控制数据传输模块，支持AD4x系列的多种探测器，如：Si, InGaAs, PbS, 和PbSe。模块包括一个带内置可编程集成放大器，20-bit A/D转换器和带RS232接口的单片机。信号处理过程在AD131内部完成，并采用相关双采样（CDS）和过采样数字滤波器，这大大降低了测试信号的噪声。基于Windows的软件可单独工作或被集成，来采集和控制Digikröm单色仪的数据。

AD131 Photodetector Module 190nm to 4.8μm

Combines SP photodiode detector, programmable charge integrator, and data conversion in a compact package.
Expandible with add-on modules for cooled sensor capability.
Null function for background noise subtraction.
Programmable gain ranges.
Windows® based data acquisition software included.
Easy to install and use on any SP Monochromator.
Internal data averaging.

Compact, Convenient, Affordable

The AD131 is a computer controlled data acquisition device for photodiode detectors, covering a wide wavelength range with Si, InGaAs, PbS, and PbSe photocells from the AD4x series. The unit contains an internal programmable charge integration amplifier, a 20-bit A/D converter, and a microprocessor with a RS232 interface. Signal processing functions take place internal to the AD131 to greatly reduce the noise level of the measured signal, including Correlated Double Sampling (CDS) and signal oversampling for digital filtering. Windows® based software allows for stand-alone operation or integrated control and data acquisition with any of the Digikröm line of monochromators.

Adding the AD131-TC Thermoelectric Controller module to the AD131 enables the use of AD4x series heads with cooling capability (designated by a ?C on the model name). AD4x heads are easily exchanged on the same AD131 unit.

SP Part #	Detector Type	Size	Range	Temp	Sensitivity	Dark resistance or current
AD421	Si	5.8x5.8	190-1000	25°C	0.4 A/W at 1550 nm	20 pA
AD427*	PbS	3x3	1000-2900	25°C	5x10⁴ V/W at 2200 nm	0.5 to 2.5 MΩ
AD429*	PbSe	3x3	1500-4800	25°C	5x10² at 4 µm	0.3 to 1.5 MΩ
AD430	InGaAs	3 dia	800-1700	25°C	0.95 A/W at 1.55 µm	15 nA
AD431	Si/InGaAs	2.4x2.4	300-1700	25°C	0.45 A/W at 0.94 µm	30 pA
		1 dia		25°C	0.55 A/W at 1.55 µm	1 nA

The following require the AD131-TC Thermoelectric Controller module in addition to the AD131 Photodetector module

SP Part #	Detector Type	Size	Range	Temp	Sensitivity	Dark resistance or current
AD427-C*	Cooled PbS	4x5	1000-2900	-10°C	8x10⁴ V/W at 2.2µm	0.5 tp 10 MΩ
AD429-C*	Cooled PbSe	3x3	1500-4800	-10°C	1x10³ V/W at 4 µm	1.7 to 7 MΩ
AD430-C	Cooled InGaAs	3 dia	800-1700	-10°C	0.95 A/W at 1.55 µm	1 nA
AD431-C	Cooled Si/InGaAs	2.4x2.4	300-1700	25°C	0.45 (25°C) at 0.94 µm	30 pA
		1 dia		-10°C	0.55 at 1.55 µm	0.07 nA

*Requires 450 Hz chopped optical signal

Feature	Value
Wavelength Range:	Per detector (see above)
A/D Resolution:	20 bit
Sample Rate:	Variable; integration period dependent.
Max. Samples Averaged per Measurement:	128
Input Current Ranges:	7.8µA max.
Internal Test Current:	100nA ± 20nA
Communications:	RS232
Software:	Windows® control program for stand-alone use or integrated with SP Monochromators.

If you need more information about this item, please call (505)343-9700 x100 or email sales@spectralproducts.com