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AS8412 PDF预览

AS8412

更新时间: 2024-01-29 13:36:04
品牌 Logo 应用领域
艾迈斯 - AMSCO /
页数 文件大小 规格书
14页 117K
描述
HIGH PERFORMANCE AUTOMOTIVE SONAR INTRUSION

AS8412 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Contact Manufacturer零件包装代码:SOIC
包装说明:SOP,针数:20
Reach Compliance Code:unknownHTS代码:8542.39.00.01
风险等级:5.84商用集成电路类型:CONSUMER CIRCUIT
JESD-30 代码:R-PDSO-G20JESD-609代码:e3
湿度敏感等级:3功能数量:1
端子数量:20最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):260
认证状态:Not Qualified最大压摆率:1.6 mA
最大供电电压 (Vsup):5.5 V最小供电电压 (Vsup):4.5 V
表面贴装:YES技术:CMOS
温度等级:INDUSTRIAL端子面层:MATTE TIN
端子形式:GULL WING端子位置:DUAL
处于峰值回流温度下的最长时间:40

AS8412 数据手册

 浏览型号AS8412的Datasheet PDF文件第2页浏览型号AS8412的Datasheet PDF文件第3页浏览型号AS8412的Datasheet PDF文件第4页浏览型号AS8412的Datasheet PDF文件第6页浏览型号AS8412的Datasheet PDF文件第7页浏览型号AS8412的Datasheet PDF文件第8页 
High Performance Automotive Sonar Intrusion – Data Sheet  
AS8412  
Low Level Output Voltage  
Vol  
-
0.5  
0.5  
0.5  
-
V
Pins 1, 20  
Pins 18, 19  
Pins 17  
Iol=3 mA  
Iol=4 mA  
Iol=12mA  
Ioh=-3 mA  
-
V
-
V
High Level Output Voltage  
High-Z Output Current  
Voh  
Ioz  
4.0  
-
-
-
V
Pins 1, 20  
10  
µA  
Pins 17, 18, Vo=5V  
19  
Total Supply Current  
Idd  
-
-
0.65  
1.0  
1.0  
1.6  
mA  
mA  
SEL40K= 1  
SEL40K= 0  
crystal or clock  
ceramic resonator  
C1=C2=100pF  
A.C. Electrical Characteristics  
(VDD = 5 V, VSS = Ground, TA = 25°C)  
Parameter  
Symbol Min  
Typ  
Max  
Units Conditions  
SEL40K= 0, resonator / clock  
SEL40K= 1, clock  
Power-on-reset width  
tpor  
50  
500  
500  
1.3  
-
-
-
-
-
-
-
-
70  
530  
800  
1.4  
1.9  
2.1  
4.6  
-
ms  
SEL40K= 1, crystal  
Self-test delay (incl. tpor  
)
tstd  
s
SEL40K= 0, resonator / clock  
SEL40K= 1, clock  
1.7  
1.7  
SEL40K= 1, crystal  
Fault indication pulse width  
ALARM low pulse width  
LED low pulse width  
tstw  
tal  
4.3  
s
200  
ms  
Pins 18, 19  
tonn  
-
-
-
89  
-
-
-
ms  
ms  
ms  
narrow = no detection  
wide = detection  
977  
888  
toff  
LED high pulse width  
System Description  
Ultrasonic intrusion detectors are very popular in vehicle security systems, due to their low  
cost, good area coverage and easiness of installation. The AS8412 uses the sonar principle to  
build a high-performance intrusion detector that follows the requirements of the OEM automo-  
tive industry. As very short ultrasonic bursts are sent, the power needed to drive the transmitter  
is reduced. Interference and signal cancellation effects, present in systems with continuous  
transmission, are virtually eliminated.  
Fig. 1 shows the pulse/echo timing generated by the AS8412.  
The basic concept behind the AS8412 is the detection of changes in the relative position of  
objects inside the vehicle, by monitoring successive echo patterns with a discriminator based  
on fuzzy-logic.  
Despite the higher complexity of this approach, that demands both analog and digital signal  
processing, the solution is made cost-effective with the use of a single IC and a small number  
of external components.  
March 2001  
Page 5 of 14  

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