意法半導體保證啟動時間的故障安全比較器對可靠性和節(jié)能性進行優(yōu)化
Failsafe comparators with guaranteed start-up time boost reliability and power savings
保證啟動時間的故障安全比較器對可靠性和節(jié)能性進行優(yōu)化
TS3121 and TS3121A rail-to-rail, open-drain, single channel comparators feature a novel failsafe architecture and guaranteed start-up time that simplify powering up for short periods to minimize consumption in low-power applications. Ideal for use in industrial controls, building automation, power tools, smart metering, as well as in automotive powertrain and body-control modules.
TS3121和TS3121A軌對軌、開漏、單通道比較器采用了新穎的故障安全架構(gòu)，并能有效保證啟動時間。此舉簡化了短時間通電，從而充分降低了低功耗應(yīng)用的功耗。此類器件非常適合用于工業(yè)控制、樓宇自動化、電動工具、智能計量以及汽車動力總成和車身控制模塊。
The failsafe architecture allows analog sensor voltages to remain at the inputs when the supply voltage is cut, which ensures robust performance and helps simplify application firmware. The guaranteed start-up time allows frequent power cycling with extended off duration for maximum power savings.
得益于故障安全架構(gòu)，模擬傳感器電壓在電源電壓切斷時仍能保持在輸入端。如此便能保證穩(wěn)健性能，并有助于簡化應(yīng)用程序固件。受保證的啟動時間允許頻繁的斷電重啟，并延長關(guān)閉時間，帶來顯著的節(jié)能效果。
Inspired by industrial robots that use sensors running from a back-up battery to maintain positional awareness while the main system turns off saving power, these comparators fulfill diverse automation applications. Also featuring independent supply, I/O, and output voltage domains that allow flexible level shifting, they are ideal for use in industrial controls, building automation, power tools, and smart metering. In addition, both the TS3121 and TS3121A are available as automotive-qualified devices that are suited to use in applications such as powertrain and body-control modules.
受工業(yè)機器人的啟發(fā)，比較器采用由備用電池運行的傳感器，能夠在主系統(tǒng)因省電而關(guān)閉時繼續(xù)保持位置感知，滿足了各種自動化應(yīng)用的需求。此外，比較器還具有獨立的電源、I/O和輸出電壓域，能夠?qū)崿F(xiàn)靈活的電平轉(zhuǎn)換，非常適合用于工業(yè)控制、樓宇自動化、電動工具和智能計量。不僅如此，TS3121和TS3121A均屬于車規(guī)級器件，適用于動力總成和車身控制模塊等應(yīng)用。
The comparators operate over a wide supply-voltage range, from 1.7V to 5.5V, and feature a precision input stage that facilitates accurate threshold detection with typical propagation delay of 60ns. Both devices have typical input-offset voltage of 0.5mV, with a specified maximum offset of 2mV for the TS3121A and 6mV for the TS3121. Both tolerate ESD up to 4kV (HBM), and operate over the extended temperature range from -40°C to 125°C. The comparators are available in space-saving SC70-5 and standard SOT23-5 packages.
比較器在1.7V至5.5V的寬電源電壓范圍內(nèi)工作，具有精確的輸入級，可實現(xiàn)精確的閾值檢測，典型的傳播延遲為60ns。兩款器件的典型輸入偏移電壓均為0.5mV，TS3121A的指定最大偏移為2mV，而TS3121的則為6mV。二者均能耐受高達4kV（HBM）的ESD，并在-40°C至125°C的擴展溫度范圍內(nèi)工作，分別采用緊湊型SC70-5和標準SOT23-5封裝。
All features:
全部特性：
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Low offset voltage: 2 mV max @ 25 °C (A-grade version) 低偏移電壓：2 mV max @ 25 °C（A級版本） |
Input/output pins withstand voltages higher than VCC 輸入/輸出引腳承受的電壓高于VCC |
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Low power consumption: 70 μA typ 低功耗：70 μA 典型 |
Fail-safe architecture keeps output in high impedance when VCC = 0 V 當VCC=0 V時，故障安全架構(gòu)使輸出保持高阻抗 |
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Wide supply voltage: 1.7 to 5.5 V 寬供電電壓：1.7至5.5 V |
Guaranteed start-up time allows sequential on/off cycles of VCC 受保證的啟動時間允許VCC的順序開/關(guān)周期 |
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Propagation delay: 60 ns 傳播延時：60 ns |
High ESD tolerance: 4 kV HBM 高ESD容差：4 kV HBM |
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Rail-to-rail input 軌到軌輸入 |
Extended temperature range: -40 to +125 °C 寬溫度范圍：–40 到 +125 °C |
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Open-drain output 漏極開路輸出 |
AEC-Q100 qualified AEC-Q100認證 |
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Fail-safe input/output pins 故障安全輸入/輸出引腳 |
Safety capable: documentation available to aid functional safety system design 安全能力：可用于輔助功能安全系統(tǒng)設(shè)計的文檔 |
The TS3121 and TS3121A are available now, priced from $0.60 for orders of 1000 units and free samples of the TS3121 and TS3121A are available on the ST eStore. The comparators are included in ST’s 10-year longevity program that guarantees long-term product availability.
TS3121和TS3121A現(xiàn)已上市；千片起訂單價0.60美元。用戶可從意法半導體電子商城申請TS3121與TS3121A的免費樣品。為產(chǎn)品的長期可用性，上述比較器已納入意法半導體的10年長期供貨計劃。
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