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LM193AH

更新时间： 2024-01-03 04:29:54
品牌 Logo 应用领域
德州仪器 - TI 比较器放大器放大器电路
页数 文件大小 规格书
24页 1432K
描述
LM193/LM293/LM393/LM2903 Low Power Low Offset Voltage Dual Comparators

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LM193AH 技术参数

是否Rohs认证： 符合生命周期：Obsolete
零件包装代码：SOIC包装说明：LEAD FREE, MICRO, PLASTIC, SOP-8
针数：8Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.09Is Samacsys：N
放大器类型：COMPARATOR最大平均偏置电流 (IIB)：0.4 µA
25C 时的最大偏置电流 (IIB)：0.25 µA最大输入失调电压：9000 µV
JESD-30 代码：R-PDSO-G8JESD-609代码：e4
长度：4.9 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：2端子数量：8
最高工作温度：125 °C最低工作温度：-55 °C
输出类型：OPEN-COLLECTOR封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP8,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：260电源：5 V
认证状态：Not Qualified标称响应时间：1300 ns
筛选级别：AEC-Q100座面最大高度：1.75 mm
子类别：Comparator最大压摆率：2.5 mA
供电电压上限：36 V标称供电电压 (Vsup)：5 V
表面贴装：YES技术：BIPOLAR
温度等级：MILITARY端子面层：NICKEL PALLADIUM GOLD
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL处于峰值回流温度下的最长时间：40
宽度：3.9 mmBase Number Matches：1

LM193AH 数据手册

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LM193-N, LM2903-N, LM293-N, LM393-N  
SNOSBJ6E –OCTOBER 1999–REVISED MARCH 2013  
www.ti.com  
APPLICATION HINTS  
The LM193 series are high gain, wide bandwidth devices which, like most comparators, can easily oscillate if the  
output lead is inadvertently allowed to capacitively couple to the inputs via stray capacitance. This shows up only  
during the output voltage transition intervals as the comparator change states. Power supply bypassing is not  
required to solve this problem. Standard PC board layout is helpful as it reduces stray input-output coupling.  
Reducing the input resistors to < 10 kΩ reduces the feedback signal levels and finally, adding even a small  
amount (1.0 to 10 mV) of positive feedback (hysteresis) causes such a rapid transition that oscillations due to  
stray feedback are not possible. Simply socketing the IC and attaching resistors to the pins will cause input-  
output oscillations during the small transition intervals unless hysteresis is used. If the input signal is a pulse  
waveform, with relatively fast rise and fall times, hysteresis is not required.  
All input pins of any unused comparators should be tied to the negative supply.  
The bias network of the LM193 series establishes a drain current which is independent of the magnitude of the  
power supply voltage over the range of from 2.0 VDC to 30 VDC  
.
It is usually unnecessary to use a bypass capacitor across the power supply line.  
The differential input voltage may be larger than V+ without damaging the device(1). Protection should be  
provided to prevent the input voltages from going negative more than −0.3 VDC (at 25°C). An input clamp diode  
can be used as shown in Typical Applications.  
The output of the LM193 series is the uncommitted collector of a grounded-emitter NPN output transistor. Many  
collectors can be tied together to provide an output OR'ing function. An output pull-up resistor can be connected  
to any available power supply voltage within the permitted supply voltage range and there is no restriction on this  
voltage due to the magnitude of the voltage which is applied to the V+ terminal of the LM193 package. The  
output can also be used as a simple SPST switch to ground (when a pull-up resistor is not used). The amount of  
current which the output device can sink is limited by the drive available (which is independent of V+) and the β  
of this device. When the maximum current limit is reached (approximately 16mA), the output transistor will come  
out of saturation and the output voltage will rise very rapidly. The output saturation voltage is limited by the  
approximately 60Ω rSAT of the output transistor. The low offset voltage of the output transistor (1.0mV) allows the  
output to clamp essentially to ground level for small load currents.  
Typical Applications  
(V+=5.0 VDC  
)
Figure 17. Basic Comparator  
Figure 18. Driving CMOS  
(1) Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode  
range, the comparator will provide a proper output state. The low input voltage state must not be less than −0.3V (or 0.3V below the  
magnitude of the negative power supply, if used).  
8
Submit Documentation Feedback  
Copyright © 1999–2013, Texas Instruments Incorporated  
Product Folder Links: LM193-N LM2903-N LM293-N LM393-N  
 
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