press release - Micro Analog Systems Oy

MAS6512 – Capacitive Sensor Signal Interface IC
Category: Front Page News
23.08.2012 Micro Analog Systems Oy introduces MAS6512, a 16 Bit Capacitive Sensor Signal
Interface IC primarily intended for MEMS based pressure sensor modules.
The device uses a ratiometric AD-converter principle employing a delta-sigma conversion
technique, giving very good noise performance. Its current consumption is extremely low (1.9
µA) 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 capacitive sensor in power consumption critical portable applications.
The resolutionof the ADC is 14-bits. The over sampling ratio (OSR) of the Delta-Sigma
converter has five values to choose from for further optimization between conversion accuracy,
speed and current consumption. MAS6512 capacitive sensor interface IC can interface both
single and dual capacitance sensors. It has internal temperature sensor for temperature
measurement and temperature compensation purposes. The MAS6512 communicates via a
standard 2-wire I2C and 4-wire SPI bus interface.
Single and Differential Capacitive Sensors
Sensor Offset and Gain Adjustment
• Changing Capacitance Range 2pF…30pF
• Internal Offset Capacitance Matrix 0pF…22pF
• External Capacitance up to 40pF (or higher using external clock)
Resolution 14 bit (OSR=4096, ∆C=20pF)
Internal Clock Oscillator
On Chip Temperature Sensor -40
Low Voltage Operation 1.8 V…3.6 V
Low Supply Current: 1.9 µA...28 µA
Conversion Time 5.8ms...82.6ms (12Hz...173Hz)
16-bit Ratiometric∆Σ CDC
Internal 256-bit
bit EEPROM Calibration Memory
MAS6512 is available in a QFN-16
16 4x4x0.75 package as well as tested wafers or dies in waffle
pack. For further information and samples please contact Micro Analog Systems Oy.
Download <press release>.