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MAX986EUK-T PDF预览

MAX986EUK-T

更新时间: 2024-01-31 04:38:18
品牌 Logo 应用领域
美信 - MAXIM 比较器
页数 文件大小 规格书
13页 452K
描述
Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators

MAX986EUK-T 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Obsolete零件包装代码:SOIC
包装说明:TSSOP, TSOP5/6,.11,37针数:5
Reach Compliance Code:not_compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.59
放大器类型:COMPARATOR最大平均偏置电流 (IIB):0.01 µA
25C 时的最大偏置电流 (IIB):0.01 µA最大输入失调电压:7000 µV
JESD-30 代码:R-PDSO-G5JESD-609代码:e0
长度:2 mm湿度敏感等级:1
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:OPEN-DRAIN封装主体材料:PLASTIC/EPOXY
封装代码:TSSOP封装等效代码:TSOP5/6,.11,37
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):245电源:3/5 V
认证状态:Not Qualified座面最大高度:1.1 mm
子类别:Comparator最大压摆率:0.024 mA
供电电压上限:6 V标称供电电压 (Vsup):5 V
表面贴装:YES温度等级:INDUSTRIAL
端子面层:TIN LEAD端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:1.25 mm
Base Number Matches:1

MAX986EUK-T 数据手册

 浏览型号MAX986EUK-T的Datasheet PDF文件第5页浏览型号MAX986EUK-T的Datasheet PDF文件第6页浏览型号MAX986EUK-T的Datasheet PDF文件第7页浏览型号MAX986EUK-T的Datasheet PDF文件第9页浏览型号MAX986EUK-T的Datasheet PDF文件第10页浏览型号MAX986EUK-T的Datasheet PDF文件第11页 
Micropower, Low-Voltage, UCSP/SC70,  
Rail-to-Rail I/O Comparators  
5) Calculate R2 as follows. For this example, choose an  
Use the following procedure to calculate resistor  
values:  
8.2kstandard value:  
1
1) Select R3 according to the formulas R3 = V  
/
REF  
R2 =  
500µA or R3 = (V  
- V ) / 500µA - R4. Use the  
REF  
CC  
V
1
R1  
1
R3  
THR  
x R1  
smaller of the two resulting resistor values.  
V
REF  
2) Choose the hysteresis band required (V ). For this  
HB  
1
example, choose 50mV.  
R2 =  
= 8.03kΩ  
3.0V  
1
1
3) Calculate R1 according to the following equation:  
1.2 x 12k  
12kΩ  
2.2MΩ  
R1 = (R3 + R4) x (V / V  
)
HB  
CC  
6) Verify trip voltages and hysteresis as follows:  
4) Choose the trip point for V rising (V  
; V  
is  
THF  
IN  
THR  
the trip point for V falling). This is the threshold  
IN  
voltage at which the comparator switches its output  
from low to high as V rises above the trip point.  
IN  
1
R1  
1
R2  
1
V
rising: V  
= V  
x R1 x  
+
+
IN  
THR  
REF  
R3  
5) Calculate R2 as follows:  
R1 x V  
CC  
1
V
falling: V  
= V  
IN  
THF  
THR  
R2 =  
R3  
V
1
R1  
1
THR  
x R1  
Hysteresis = V  
V  
THF  
THR  
V
R3 + R4  
REF  
6) Verify trip voltages and hysteresis as follows:  
MAX986/MAX990/MAX994  
The MAX986/MAX990/MAX994 have 3mV internal  
hysteresis. They have open-drain outputs and require  
an external pullup resistor (Figure 2). Additional hys-  
teresis can be generated using positive feedback, but  
the formulas differ slightly from those of the  
MAX985/MAX989/MAX993.  
V
rising: V  
= V x R1 x  
REF  
IN  
THR  
1
R1  
1
1
+
+
R2  
R3 + R4  
R1 x V  
R3 + R4  
CC  
V
falling: V  
= V  
IN  
THF  
THR  
Hysteresis = V  
V  
THF  
THR  
V
CC  
R3  
Board Layout and Bypassing  
Power-supply bypass capacitors are not typically need-  
ed, but use 100nF bypass capacitors when supply  
impedance is high, when supply leads are long,  
or when excessive noise is expected on the supply  
lines. Minimize signal trace lengths to reduce stray  
capacitance.  
R1  
R4  
V
IN  
V
CC  
EE  
OUT  
R2  
V
MAX986  
MAX990  
MAX994  
V
REF  
Figure 2. Additional Hysteresis (MAX986/MAX990/MAX994)  
8
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