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AS1970 PDF预览

AS1970

更新时间: 2024-01-11 03:00:13
品牌 Logo 应用领域
艾迈斯 - AMSCO 比较器
页数 文件大小 规格书
18页 754K
描述
Low-Voltage Single/Dual/Quad Comparators

AS1970 技术参数

生命周期:Obsolete零件包装代码:SOIC
包装说明:LSSOP,针数:5
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.84
Is Samacsys:N放大器类型:COMPARATOR
最大平均偏置电流 (IIB):0.01 µA最大输入失调电压:7000 µV
JESD-30 代码:R-PDSO-G5长度:2.925 mm
负供电电压上限:标称负供电电压 (Vsup):
功能数量:1端子数量:5
最高工作温度:85 °C最低工作温度:-40 °C
输出类型:PUSH-PULL封装主体材料:PLASTIC/EPOXY
封装代码:LSSOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, LOW PROFILE, SHRINK PITCH认证状态:Not Qualified
标称响应时间:400 ns座面最大高度:1.45 mm
子类别:Comparator供电电压上限:5 V
标称供电电压 (Vsup):3.3 V表面贴装:YES
温度等级:INDUSTRIAL端子形式:GULL WING
端子节距:0.95 mm端子位置:DUAL
宽度:1.625 mmBase Number Matches:1

AS1970 数据手册

 浏览型号AS1970的Datasheet PDF文件第6页浏览型号AS1970的Datasheet PDF文件第7页浏览型号AS1970的Datasheet PDF文件第8页浏览型号AS1970的Datasheet PDF文件第10页浏览型号AS1970的Datasheet PDF文件第11页浏览型号AS1970的Datasheet PDF文件第12页 
AS1970  
Data Sheet - Detailed Description  
8 Detailed Description  
The AS1970 - AS1975 are single/dual/quad low-power, comparators. The devices operate with a supply voltage range  
between 2.5 and 5.5V while consuming down to 8.5µA per comparator. Their common-mode input voltage range  
extends 0.25V beyond each rail.  
Internal hysteresis ensures clean output switching, even with slow input signals. Large internal output drivers allow rail-  
to-rail output swing with up to 8mA loads.  
The output stage design minimizes supply-current surges while switching, virtually eliminating the power supply tran-  
sients typical. The AS1970/AS1972/AS1974 push/pull output stage sinks and sources current, wheras the AS1971/  
AS1973/AS1975 open-drain output stage can be pulled beyond VCC to an absolute maximum of 5.5V > VEE.  
Input Stage  
The input common-mode voltage range extends from -0.25V to (VCC + 0.25V), and the comparators can operate at  
any differential input voltage within this voltage range. Input bias (IB) current is 1.0pA (typ) if the input voltage is within  
the common-mode voltage range.  
Inputs are protected from over-voltage by internal ESD protection diodes connected to the supply rails. As the input  
voltage exceeds the supply rails, these diodes become forward biased and begin to conduct and the bias currents  
increase exponentially as the input voltage exceeds the supply rails.  
Output Stage  
The push/pull and open-drain output stages were designed to provide rail-to-rail operation with up to 8mA loads. Even  
at loads of up to 8mA, the supply-current change during an output transition is extremely small (see Figure 4 on page  
6). Figure 4 shows the minimal supply-current increase as the output switching frequency approaches 1MHz. This  
characteristic eliminates the need for power-supply filter capacitors to reduce glitches created by comparator switching  
currents.  
Because of the unique design of its output stage, the AS1970 - AS1975 can dramatically increase battery life, even in  
high-speed applications.  
www.austriamicrosystems.com  
Revision 1.02  
9 - 18  

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