參數(shù)資料
型號(hào): TL7705
廠商: Texas Instruments, Inc.
英文描述: Supply voltage Supervisor
中文描述: 電源電壓監(jiān)控
文件頁(yè)數(shù): 17/17頁(yè)
文件大?。?/td> 340K
代理商: TL7705
Summary
Supply voltage Supervisor TL77xx Series
13
Figure 15. Series Resistor at the C
t
input of the TL770xB
To a small degree this resistor influences the delay time t
d
. In most applications however this effect can be
neglected, because - when determining the length of the reset pulse - a large reserve is taken into
account.
When designing a supply voltage supervision circuit often an analysis of the noise on the supply lines is
required. The probes of the oscilloscope usually used for this kind of measurement mostly are not capable
of performing the measurements correctly. The main reason is the ground wire attached to the probe. This
wire often acts as an antenna which receives all the noise generated by the surrounding circuits. This
leads to a wrong display on the oscilloscope screen. More accurate results are found, when the signal to
be measured is taken via a 0.1
μ
F capacitor (to block the DC voltage) directly soldered to the point of
measurement. The other end of the capacitor is connected to a coaxcable, whose shield is connected by
the shortest path to the next ground reference point. The coaxcable leads to the input of the oscilloscope,
where the cable has to be terminated correctly to avoid line reflections.
5. Summary
Monitoring of the supply voltage is absolutely mandatory to guarantee a correct initialization of the circuit
and to detect undefined operating condition e.g. an undervoltage. This report shows several application
examples for the supply voltage supervisor circuits of the series TL77xxA. Owing their very accurate
threshold voltage, they can be easily designed into systems, replacing expensive discrete circuits .
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TL7705A 制造商:TI 制造商全稱:Texas Instruments 功能描述:SUPPLY-VOLTAGE SUPERVISORS
TL7705A_10 制造商:TI 制造商全稱:Texas Instruments 功能描述:SUPPLY-VOLTAGE SUPERVISORS
TL7705AC 制造商:TI 功能描述:7705 TI IN S3D8A 制造商:Texas Instruments 功能描述:
TL7705AC10 制造商:Texas Instruments 功能描述:
TL7705ACD 功能描述:監(jiān)控電路 4.55V Monitor RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲(典型值):10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel