Environment Sensing - Future Electronics
Temperature and Pressure Sensors,
Analog Sensor Signal Conditioning, and
MEMs Microphones
www.FutureElectronics.com/ST
Environment
Sensing
Environment
Sensing
Environment Sensing
Environment
Sensing
Temperature and Pressure Sensors,
Analog Sensor Signal Conditioning, and
MEMs Microphones
MEMS MICROPHONES
TEMPERATURE SENSORS
ST’s MEMS mics are designed in
industry-unique, innovative plastic
packaging that offers slimmer form
factors, and outperforms traditional
metallic lid devices in durability. Both
analog- and digital-input top and
bottom port solutions are available.
STMicroelectronics’ temperature
sensors include both analog and digital
temperature sensor ICs. Both types
are suitable for use in a wide range of
applications, such as industrial,
consumer, medical and computer
market segments.
Featured Product
Featured Product
MP34DB01 MEMS audio sensor omnidirectional
digital microphone
STTS751 2.25V low-voltage local digital
temperature sensor
The MP34DB01 is an ultra-compact, low-power,
omnidirectional, digital MEMS microphone built with
a capacitive sensing element and an IC interface
with stereo operation capability.
The STTS751 is a digital temperature sensor which
communicates over a 2-wire SMBus 2.0 compatible
bus. The temperature is measured with a userconfigurable resolution between 9 and 12 bits. At
9 bits, the smallest step size is 0.5°C, and at 12 bits,
it is 0.0625°C. At the default resolution (10 bits, 0.25°C/
LSB), the conversion time is nominally 21 milliseconds.
Key Features
Key Features
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Single supply voltage
Low power consumption
120 dBSPL acoustic overload point
62.6 dB signal-to-noise ratio
Omnidirectional sensitivity
-26 dBFS sensitivity
PDM single-bit output with option for stereo
configuration
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Operating voltage 2.25V to 3.6V
Operating temperature -40°C to +125°C
Programmable Conversion Rate
- 10 different rates; 0.0625 to 32 conversions/sec.
- Default rate 1 conversion/sec. – default
Programmable Resolution
- 4 resolutions 9-bit (0.5°C/LSB) to 12-bit (0.0625°C/LSB)
- Default is 10-bit (0.25°C/LSB)
Low supply current 50μA (typ) for 8 conversions/
sec.20μA (typ) for 1 conversion/sec.3μA (typ) standby
Accuracy±1.0°C (typ) 0°C to +85°C±2.0°C (typ)
-40°C to +125°C
One-shot mode for power saving
Fast conversion time 21ms (typ) 10-bit
Pull-up resistor value allows single pin to select one
of four slave addresses
www.FutureElectronics.com/ST
Environment Sensing
Temperature and Pressure Sensors,
Analog Sensor Signal Conditioning, and
MEMs Microphones Microphones
ST’s ultra-small silicon pressure
sensors use innovative MEMS
technology to provide extremely high
resolution measurements of pressure,
and therefore also of altitude, in
ultra-compact and thin packages.
The devices are designed using
proprietary ST technology which
allows the pressure sensor to be
fabricated on a monolithic silicon chip,
thereby eliminating wafer-to-wafer
bonding and maximizing
reliability.
Featured Product
LPS331AP MEMS pressure sensor,
260-1260 mbar absolute digital output barometer
The LPS331AP is an ultra-compact absolute
piezoresistive pressure sensor. It includes a monolithic
sensing element and an IC interface able to take the
information from the sensing element and to provide a
digital signal to the external world.
Key Features
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260 to 1260 mbar absolute pressure range
Low power consumption
High overpressure capability: 20x full scale
Embedded temperature compensation
Embedded 24-bit ADC
Selectable ODR from 1Hz to 25Hz
SPI and I2C interfaces
Supply voltage: 1.71 to 3.6V
High shock survivability: 10,000 g
Small and thin package
ANALOG SENSOR SIGNAL
CONDITIONING
ST’s robust amplifier portfolio features
ultra-low power consumption, high speed
and precision devices designed to support many applications including signal
conditioning for sensor interface. These
devices are the ideal signal conditioning
solutions to interface with UV and gas
detection such as CO2 and O2 sensors.
A range of package options is available to support
space constrained applications. An automotive temperature grade is available for many products to enable use
in high temperature industrial or high reliability medical
applications.
Featured Product
TSZ121-High accuracy, Zero-drift
Micropower Op Amp
The TSZ121 is a high precision operational amplifier
featuring very low offset voltage with virtually zero-drift.
These features combined with rail-to-rail input and output, and an excellent speed/power consumption ratio
make the TSZ121 ideal for gas sensor interfaces.
Key Features
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Very low offset voltage: 20μV max.
Ultra-low offset voltage drift: 60 nV/°C max.
Rail-to-rail input and output
Wide operating supply voltage range: 1.8V - 5.5V
Low power consumption: 42μA max. at 5V
Gain bandwidth product: 400kHz
High tolerance to ESD: 4kV HBM
Extended temperature range: -40 to +125°C
Environment
Sensing
PRESSURE SENSORS
Environment
Sensing
May 2013
ST Development Kits Online
www.futureelectronics.com/ST
LPS331AP BLOCK DIAGRAM
p
Vup
Rs
Rs
Rs
Vout
Rs
Vdown
Sensing
element
MUX
Low noise
analog
front end
Temperature
sensor
Sensor bias
www.FutureElectronics.com/ST
ADC
+
digital filter
Voltage and
current bias
DSP for
temperature
compensation
I 2C
SPI
Clock and
timing
CS
SCL/SPC
SDA/SDO/SDI
SAO/SDO
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