詳細(xì)描述

MAS6503 采用比例式 AD 轉(zhuǎn)換器原理，采用 delta-sigma (DS) 轉(zhuǎn)換技術(shù)，具有非常好的噪聲性能。其電流消耗極低（18.3 μA，在分辨率下每秒進(jìn)行一次壓力轉(zhuǎn)換，包括傳感器電橋電流），并且可以在 1.8 V 至 3.6 V 的低電源電壓下運(yùn)行，這使其成為連接壓電器件的理想解決方案。功耗關(guān)鍵的便攜式應(yīng)用中的電阻傳感器。ADC 的有效位數(shù) (ENOB) 為 17.4 位。DS 轉(zhuǎn)換器的過(guò)采樣率 (OSR) 有五個(gè)值可供選擇，以進(jìn)一步優(yōu)化轉(zhuǎn)換精度、速度和電流消耗。MAS6503 還具有電源電壓監(jiān)控模式，這在電池供電系統(tǒng)中尤其有用。使用內(nèi)置傳感器采樣開(kāi)關(guān)，外部傳感器橋不僅可用于檢測(cè)壓力，還可用于檢測(cè)溫度。MAS6503 通過(guò)標(biāo)準(zhǔn)的 2 線 I2C 串行總線接口進(jìn)行通信。

The MAS6503 uses a ratiometric AD-converter principle employing a delta-sigma (DS) conversion technique, giving very good noise performance. Its current consumption is extremely low (18.3 μA, one pressure conversion in a second at maximum resolution and including sensor bridge current) and it can operate at low supply voltage from 1.8 V to 3.6 V which makes it an ideal solution for interfacing a piezo-resistive sensor in power consumption critical portable applications. The effective number of bits (ENOB) of the ADC is 17.4 bits. The over sampling ratio (OSR) of the DS-converter has five values to choose from for further optimization between conversion accuracy, speed and current consumption. MAS6503 also features supply voltage monitoring mode which is especially useful in battery operated systems. The external sensor bridge can be used to sense not only pressure but also temperature, using the built-in sensor sampling switches. The MAS6503 communicates via a standard 2-wire I2C serial bus interface.

規(guī)格書(shū)和資料

Data SheetPress release