MAS6503中文资料MAS6503 24-bit Low Power Piezoresistive Sensor Signal Interface IC数据手册MAS规格书

描述 Description

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.

特性 Features

·Low Standby Current Consumption 10 nA Typ
·Very Low Supply Current: 0.9 μA…18.3 μA Typ
· Supply Voltage: 1.8 V…3.6 V
·Ratiometric ΔΣ Conversion
·Selectable Input Signal Ranges (VDD=2.7V):373, 252, 172 and 115 mVPP
·Selectable Optional Offsets (VDD=2.7V):±126, ±86, ±57 and ±40 mV
·Selectable Sensor Resistance Values2, 2.5, 3, 3.5, 4, 4.5, 5 and 10kΩ
· Over Sampling Ratio: 4096, 2048, 1024, 512 and 256
·Internal System Clock Signal 250 kHz
·Conversion Times 1.41 ms…16.77 ms Typ
·2-Wire Serial Data Interface (I2C Bus)
·256 Bit EEPROM Memory
·Good Noise Performance thanks to the ΔΣ Architecture
· VDD monitoring mode