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A2TPMI334L5.5GXXOCA 参数 Datasheet PDF下载

A2TPMI334L5.5GXXOCA图片预览
型号: A2TPMI334L5.5GXXOCA
PDF下载: 下载PDF文件 查看货源
内容描述: 热电堆集成信号处理电路 [Thermopile with integrated signal processing circuit]
分类和应用:
文件页数/大小: 21 页 / 317 K
品牌: PERKINELMER [ PERKINELMER OPTOELECTRONICS ]
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Datasheet A2TPMI  
CONTROL UNIT / SERIAL INTERFACE  
The operation characteristics of the A2TPMI have to be configured with a set of internal random access  
registers. All parameters / configurations are permanently stored in E2PROM in parallel, Configuration  
is usually done during factory calibration and does not need any user input.  
The control unit offers via serial interface access to all the registers, i.e. the internal parameters of the  
A2TPMI. The serial interface is a two wire bi-directional synchronous (SDAT, SCLK) type. A2TPMI sen-  
sors are in general factory calibrated and therefore there is no need to use the serial interface for stan-  
dard applications.  
The SDAT- / SCLK pins are internally pulled up to VDD and can be left unconnected. If the SDAT /  
SCLK pins will be connected in the application, ensure signal conformity to the serial interface specifica-  
tion. Subsequent undefined signals applied to these pins, may change the configuration and lead to  
malfunctioning of the sensor.  
For detailed information about the serial interface refer to application note: A2TPMI Serial Interface de-  
scription, or contact PerkinElmer application support.  
OUTPUT CONFIGURATION  
The A2TPMI offers various output configurations, which can be configured via the serial communication  
interface by means of integrated analog switches. For each output it can be individually selected  
whether the output operates in ‘Analog mode’ or in ‘Comparator mode’.  
In ‘Analog mode’ the output signal represents the measured IR radiation, respectively the temperature  
as an analog DC voltage.  
In ‘Comparator mode’ the measured IR radiation, respectively the temperature is compared to a pro-  
grammed threshold. For slowly changing signals an additional hysteresis can be configured. If the  
measured signal is above the threshold, +5VDC (logical high) is applied to the output. If the measured  
signal is below the threshold, 0VDC (logical low)is applied to the output.  
For detailed information about the output configuration refer to application note: A2TPMI Serial Interface  
description, or contact PerkinElmer application support.  
A2TPMI Datasheet Rev4  
Page 10 of 21  
Rev. Oct 2003  
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