MAS6501

This is preliminary information on a new product under development. Micro Analog Systems Oy reserves the right to make any changes without notice. DA6501.001 27 October 2008 MAS6501 16-Bit Analog-to-Digital Converter Standby Current Consumption 0.1 µA Low Supply Current Low Power Consumption Resolution 16 Bits Ratiometric ∆Σ ADC ENOB 14 Bits Serial Data Output (I2C bus) DESCRIPTION The MAS6501 is a 16 bit Analog-to-Digital Converter (ADC), which employs a delta-sigma (∆Σ) conversion technique. With the linear input signal range of 282 mVPP its resolution is 14 bits. The MAS6501 is designed especially to meet the requirement for low power consumption, thus making it an ideal choice for battery powered systems. The MAS6501 is equipped with a standby function, i.e. the ADC is in power down between each conversion. By utilizing this and overall low power consumption, current consumption values of 1.6 µA (one pressure conversion in a second with full 14-bit accuracy) or less can be achieved. The MAS6501 has an on-chip second order decimator filter to process the output of the second order ∆Σ -modulator. The ADC also has two selectable conversion ranges with two optional offset levels. A bi-directional 2-wire I2C bus is used for configuring conversion parameters, starting conversion and reading out the A/D conversion result. MAS6501 has one input channel suitable for piezo resistive pressure sensor. In addition to pressure measurement configuration the device can b...