串聯(lián)電壓基準(zhǔn)在功率受限的能量收集設(shè)計(jì)中提高精度

　　電壓基準(zhǔn)對(duì)于確保任何測量應(yīng)用的準(zhǔn)確性至關(guān)重要。對(duì)于能量采集驅(qū)動(dòng)的傳感器應(yīng)用，工程師需要管理非常嚴(yán)格的功率預(yù)算，超低功耗電壓基準(zhǔn)提供所需的精度，同時(shí)消耗很少電流。工程師可以滿足精密低功耗電壓基準(zhǔn)使用廠家包括模擬設(shè)備，Intersil，線性技術(shù)，集成，德克薩斯工具設(shè)備的需要，和試金石半導(dǎo)體。

　　在設(shè)計(jì)用來監(jiān)視真實(shí)世界特性的應(yīng)用程序中，精度取決于對(duì)已知電壓基準(zhǔn)執(zhí)行測量的能力。一個(gè)穩(wěn)定的參考電壓傳感器系統(tǒng)是必不可少的ADCs準(zhǔn)確的數(shù)據(jù)轉(zhuǎn)換，或能量存儲(chǔ)的設(shè)計(jì)要求需要優(yōu)化鋰離子電池工作電壓小心控制。設(shè)計(jì)師可以線性技術(shù)LTC6802鋰離子電池監(jiān)測與線性1461電壓基準(zhǔn)提供高度精確的李離子電池充電管理結(jié)合（圖1）。

　　Figure 1： Voltage references provide high accuracy needed for applications such as those depending on accurate charge management needed for Li-ion energy storage （Courtesy of Linear Technology）。

　　Voltage references are designed to deliver a known output voltage with great precision and stability. Of course， any real device suffers variations from ideal due to manufacturing and environmental conditions. Manufacturer datasheets provide engineers with specifications for key device characteristics intended to convey output voltage error due to intrinsic and extrinsic factors.