press release - Micro Analog Systems Oy

PRESS RELEASE
06 October 2011
Micro Analog Systems releases
Low Power Piezoresistive Sensor Signal Interface IC
Targeted for MEMS based pressure sensor modules
Helsinki, Finland – 06 October 2011 - Micro Analog Systems Oy today announced
MAS6502, a 16-bit Piezoresistive Sensor Signal Interface IC primarily intended for
MEMS based pressure sensor modules.
The device uses a ratiometric AD-converter
principle employing a delta-sigma (ΔΣ)
conversion technique, giving very good
noise performance. Its current consumption
is extremely low (2.3 μA ) and it can
operate at low supply voltage from 2.0 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 14-bits. The over sampling ratio
(OSR) of the ΔΣ-converter has four values
to choose from for further optimization between conversion accuracy, speed and
current consumption. The external sensor bridge can be used to sense not only
pressure but also temperature, using the built-in sensor sampling switches. The
MAS6502 communicates via a standard 2-wire I2C serial bus interface.
CVDD
4.7μ
VDD
VDD
VDD
GND
RP
4.7k
TE3
VDD
OSC
VREFP
SENSOR
PI
P
SDA
T
N
P
COMMON
R3
R4
P
T
VDD
ADC
I2 C
CONTROL
I/O
SCL
T
I/O
VDD
XCLR
EOC
R2
MAS6502
T
TEST
TE1
GND
GND
Micro Analog Systems Oy
Kutomotie 16
FI-00380 Helsinki
Finland
I/O
VREFN
R1
VDD
RP
4.7k
EEPROM
TE2
OPTIONAL
I/O
MCU
GND
GND
[email protected]
www.mas-oy.com
PRESS RELEASE
06 October 2011
FEATURES
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Low Standby Current Consumption 0.1 μA Typ
Very Low Supply Current: 0.35 μA…2.3 μA
Supply Voltage: 2.0 V…3.6 V
Ratiometric ∆Σ Conversion
Selectable Input Signal Ranges (VDD=2.35V):
325 mVPP, 220 mVPP, 150 mVPP, 100 mVP
Selectable Optional Offset (VDD=2.35V):
33 mV
Selectable Sensor Resistance Values
5 kΩ, 4.5 kΩ, 4 kΩ, 3.4 kΩ
Over Sampling Ratio: 512, 256, 128, 64
Conversion Times 0.8 ms…10.6 ms Typ
2-Wire Serial Data Interface (I2C Bus)
256 Bit EEPROM Memory
Good Noise Performance thanks to the ∆Σ Architecture
MAS6502 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:
Jan Gripsborn
VP Sales & Marketing
+46 708 778 110
[email protected]
Micro Analog Systems Oy
Kutomotie 16
FI-00380 Helsinki
Finland
[email protected]
www.mas-oy.com