News

Helsinki, Finland – 05 February 2016 

MAS6240 – Piezo Driver for Multi-Tone Sound in 2 x 2 QFN package

Micro Analog Systems Oy introduces new smaller 2 x 2 x 0.5 QFN package for MAS6240, a piezo driver IC designed to create a multi-tone sound. It is a high efficiency, easy and low cost IC for wrist watches, alarm clocks, GPS, PDAs and other handheld or portable solutions. Traditionally multi-tone sound has been implemented using an external inductor for each different output frequency. This has been solved with a new design also giving a wider audio bandwidth. The inductorless design causes significantly less disturbance to the surrounding circuits, making it an ideal choice for sensitive designs. Only four small value capacitors are needed in addition to a sound element. MAS6240 can also be used in other applications for example as a white LED driver.

MAS6240 can drive outputs up to 18 VP-P from single 3 V supply voltage. An input voltage amplification factor can be selected as 1, 2 or 3. The output can be selected as a single mode or a differential mode. A sound signal is feeded in a digital form. The digital sound signal also controls audio and shutdown states, so additional power on control is not needed. A shut down current is less than 1 ?A. The chip is available in 2 x 2 x 0.5 as well as 3 x 3x 0.75 mm 12 pin QFN packages and also as EWS tested wafer. Samples are available. Price for a QFN packaged device is USD 0.57 (3 000 pcs).
For further information and samples, please contact Micro Analog Systems Oy at info-mas@mas-oy.com

Helsinki, Finland – 15 November 2013

Micro Analog Systems Oy today announced MAS6510, a 24-bit Capacitive Sensor Signal Interface IC primarily intended for MEMS based pressure sensor modules.

The device uses a ratiometric capacitance to digital (CDC) principle employing a delta-sigma (DS) conversion technique, giving very good noise performance. Its current consumption is extremely low (47.9 ?A, one pressure conversion in a second with 17.5-bit resolution) 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 effective number of bits (ENOB) of the CDC is 17.5-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. Two capacitance measurement modes are supported and the output can be proportional either to capacitance difference (CS-CR) or to capacitance ratio (CS-CR)/CS. The on chip temperature sensor serves temperature measurement and temperature compensation purposes. The MAS6510 also features supply voltage monitoring mode which is especially useful in battery operated systems. For communication standard 2-wire I2C bus and SPI serial interfaces are available.

FEATURES
• Low Standby Current Consumption 0.01 ?A Typ
• Very Low Supply Current: 3.3 ?A…47.9 ?A Typ
• Supply Voltage: 1.8 V…3.6 V
• Ratiometric >? Conversion
• 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)
• Over Sampling Ratio: 4096, 2048, 1024, 512 and 256
• Conversion Times 5.8 ms…82.6 ms Typ
• On Chip Temperature Sensor -40°C…+85°C
• Internal Clock Oscillator
• 2-Wire Serial Data Interface (I2C Bus) and Serial Peripheral Interface (SPI)
• 256 Bit EEPROM Memory
• Good Noise Performance thanks to the >? Architecture
• VDD monitoring mode
MAS6510 is available in a QFN-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.

About Micro Analog Systems
Founded in 1984, Micro Analog Systems Oy is a privately owned fabless
semiconductor house located in Helsinki, Finland. MAS supplies Application Specific
Standard Parts and ASICs for worldwide customer base. MAS current product
portfolio consists of time signal receiver ICs, crystal oscillator ICs and AD converters
for sensor applications as well as of other high performance analog ICs.

For More Information
Company Contact:
Juha Majakulma
Director
+358 50 331 5638
juha.majakulma@mas-oy.com

Helsinki, Finland – 3 October 2013

Micro Analog Systems Oy today announced MAS6503, a 24-bit Piezo Resistive Sensor Signal Interface IC primarily intended for MEME Based pressure sensor modules. The device 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.

Helsinki, Finland – 16 September 2013 –

Micro Analog Systems Oy today announced MAS6279, a miniature VCTCXO IC primarily intended for the most stable TCXO and VCTCXO modules.

The device uses fully analog compensation method making it possible to achieve +/-0.14 ppm or better frequency stability. Because of its small size the reduction of module size is possible.

MAS6279 has typical power consumption only 1.3 mA. Low phase noise of -136 dBc/Hz at 1 kHz allows the use of the MAS6279 in demanding applications. The frequency stability against load or supply voltage changes is excellent. It has programmable divider function allowing the output frequency range of 5 MHz to 64 MHz. Output wave form can be selected from sine wave or CMOS.

FEATURES 

• Very small size
• Minimal current consumption
• Wide operating temperature range
• Very low phase noise
• Minimum operating temperature –40 °C
• Oscillator frequency output selectable by EEPROM direct or f_c/2.
• Output waveform selectable by EEPROM: clipped sine wave or CMOS.

MAS6279 is delivered as die or in small QFN-10 3 x 3 package. Volume production has already started and samples are available. Price for 1000 pcs is USD 2.73 each, Ex works Micro Analog Systems Oy, Finland.

About Micro Analog Systems

Founded in 1984, Micro Analog Systems Oy is a privately owned fabless semiconductor house located in Helsinki, Finland. MAS supplies Application Specific Standard Parts and ASICs for worldwide customer base. MAS current product portfolio consists of time signal receiver ICs, crystal oscillator ICs and AD converters for sensor applications as well as of other high performance analog ICs.

For More Information

Company Contact:
Juha Majakulma
Director
+358 50 331 5638
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Download <press release>.

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.

Features

• 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, DC=20pF)
• Internal Clock Oscillator
• On Chip Temperature Sensor -40°C…+85°C
• 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 RatiometricDS CDC
  • Internal 256-bit EEPROM Calibration Memory

MAS6512 is available in a QFN-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>.

10.8.2012 – MAS landing on Mars

MAS high reliability sensor signal interface products are used in the Mars science rover Curiosity which landed on the Red Planet after a nine-month journey. For more details see http://www.investinfinland.fi/articles/news/rd-and-innovation/finnish-technology-lands-on-mars/50-687

Demonstrating the MAS6116 Stereo Digital Volume Control IC

Helsinki, Finland – 02 April 2012 –

Micro Analog Systems Oy today announced the new MAS6116 evaluation board, EB6116AA1.

MAS6116 is a stereo volume control IC for high-end audio systems. The capability to work with signal levels up to +/-18V and the extremely low THD, 0.0002% in balanced configuration, makes it very useful in high performance audio systems where the volume is controlled in the analog domain for best performance.

With the MAS6116 evaluation board it’s possible to evaluate the MAS6116 digital potentiometer with either balanced mono or single ended stereo signals. It has the facilities to be controlled either via USB by a program under Linux, Windows or OS X, or via controls on the board itself.

Download <press release>

Targeted for solar powered wireless modules

Helsinki, Finland – 02 November 2011 

Micro Analog Systems Oy today announced the MAS6011 Solar Cell Energy Harvesting System Manager.

MAS6011 monitors the supply voltage and charging of a battery-powered system containing a small solar cell. The current consumption of this IC is extremely low, 110 nA, which means the system can charge from very low light conditions and also stay in power down mode for years and still operate directly from the battery before recharging.

To be able to charge a battery also in conditions with very limited light, a large solar cell is usually used. This can on the other hand easily destroy the battery due to over voltage during strong sun light. MAS6011 solves this dilemma and will give secure protection of a secondary 3V battery over a big range of light strengths (lx).

The switching levels have been designed for usage with rechargeable 3V Lithium Vanadium (VL-type) batteries. Those batteries are compact, button-shaped, secondary batteries with very high energy compared to more traditional batteries. The self discharge rate is less than 2% a year which makes them very useful as a power source in systems that might be stored for a long time without re-charging.

Possible applications for MAS6011 include Wireless Sensor Modules, GPS Modules, Electronic locks, Watches, Energy Harvesting etc.

FEATURES

• Ultra Low Current Consumption, typ 110nA
• Low Supply Voltage Operation, min 2.0V
• Battery Overcharging Protection
• Power On Indicator and secure Power ON after shut down
• Deep discharge protection of battery during shut down mode
• Precise Shut Down and Low Battery warning threshold levels
• Suitable for rechargeable 3V Lithium Vanadium (VL-type) batteries

MAS6011 is available in a 6 pin QFN 3x3x0.75mm package and dies on tray. For further information and samples please contact Micro Analog Systems Oy.
Download <press release>.