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參數(shù)資料
| 型號： | FCD4B14 |
| 廠商： | Atmel Corp. |
| 英文描述： | Thermal Fingerprint Sensor with 0.4 mm x 14 mm Sensing Area and Digital Output |
| 中文描述： | 熱指紋傳感器感光面積和數(shù)字輸出的0.4毫米× 14毫米 |
| 文件頁數(shù)： | 11/20頁 |
| 文件大?。?/td> | 265K |
| 代理商： | FCD4B14 |
11
FCD4B14
1962C
–
01/02
Figure 6.
FCD4B14 Block Diagram
Functional Description
The circuit is divided into two main sections: sensor and data conversion. One particular
column among 280+1 is selected in the sensor array (1), then each pixel of the selected
column sends its electrical information to amplifiers (2) (one per line), then two lines at a
time are selected (odd and even) so that two particular pixels send their information to
the input of two 4-bit Analog-to-Digital Converters (3), so 2 pixels can be read for each
clock pulse (4).
Figure 7.
Functional Description
Sensor
Each pixel is a sensor in itself. The sensor detects a temperature differential between
the beginning of acquisition and the reading of information: this is the integration time.
The integration time begins with a reset of the pixel to a predefined initial state. Note that
the integration time reset has nothing to do with the reset of the digital section.
Then, at a rate depending on the sensitivity of the pyroelectric layer, on the temperature
variation between the reset and the end of the integration time, and on the duration of
the integration time, electrical charges are generated at the pixel level.
2240
8
latches
chip
temperature
sensor
line sel
odd
even
8 lines of 280 columns of pixels
4-bit
ADC
ADC
8
1 dummy column
4
4
amp
chip temperature
stabilization
ACKN
De0-3
Do0-3
output
enable
analog
output
OE
AVE AVO
TPE
TPP
1
8
PCLK
RST
clock
reset
column selection
4-bit
8
latches
chip
temperature
sensor
column selection
line sel
odd
even
8 lines of 280 columns of pixels
4-bit
ADC
ADC
8
1 dummy column
4
4
amp
De0-3
Do0-3
1
2
3
4
4-bit
相關(guān)PDF資料 |
PDF描述 |
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| FCD4B14CC | Thermal Fingerprint Sensor with 0.4 mm x 14 mm Sensing Area and Digital Output |
| FCD4B14CCB | Thermal Fingerprint Sensor with 0.4 mm x 14 mm Sensing Area and Digital Output |
| FCD5N60TM | 600V N-Channel MOSFET |
| FCU5N60 | 600V N-Channel MOSFET |
| FCD7N60 | 600V N-Channel MOSFET |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FCD4B14CC | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Thermal Fingerprint Sensor with 0.4 mm x 14 mm Sensing Area and Digital Output |
| FCD4B14CCB | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Thermal Fingerprint Sensor with 0.4 mm x 14 mm Sensing Area and Digital Output |
| FCD4C1690 | 制造商:n/a 功能描述:Power Semiconductor |
| FCD4N60 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:600V N-Channel MOSFET |
| FCD4N60TF | 功能描述:MOSFET 600V NCH MOSFET RoHS:否 制造商:STMicroelectronics 晶體管極性:N-Channel 汲極/源極擊穿電壓:650 V 閘/源擊穿電壓:25 V 漏極連續(xù)電流:130 A 電阻汲極/源極 RDS（導(dǎo)通）:0.014 Ohms 配置:Single 最大工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:Max247 封裝:Tube |
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