- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄375760 > FCD4B14 (Atmel Corp.) Thermal Fingerprint Sensor with 0.4 mm x 14 mm Sensing Area and Digital Output PDF資料下載
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)： | 15/20頁 |
| 文件大?。?/td> | 265K |
| 代理商： | FCD4B14 |
15
FCD4B14
1962C
–
01/02
Integration Time and
Clock Jitter
The FCD4B14 is not very sensitive to clock jitter (clock variation). The most important
requirement is a regular integration time that ensures the frame reading rate is also as
regular as possible, in order to get consistent fingerprint slices.
If the integration time is not regular, contrast will vary from one frame to another.
Note that it is possible to introduce some waiting time between each set of 1124 clock
pulses, but the overall time of one frame read must be regular. This waiting time is gen-
erally the time needed by the processor to perform some calculation over the frame (to
detect the finger, for instance).
Figure 10.
Read One Frame
Figure 11.
Regular Integration Time
Clock PCLK
Reset RST is low
1
2
3
4
5
6
1124
1123
1122
1121
1120
1119
Column 1
Column 2
Column 280
Dummy Column 281
Pixels 1 & 2 3 & 4 5 & 6 7 & 8 1 & 2 3 & 4
7 & 8
DB1 DB2 DB3 DB4
Clock PCLK
REGULAR INTEGRATION TIME
Frame n
1124 pulses
Frame n+1
1124 pulses
Frame n+2
1124 pulses
Frame n+3
1124 pulses
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。