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ZMD31035 Datasheet(PDF) 1 Page - Zentrum Mikroelektronik Dresden AG

Part No. ZMD31035
Description  Automotive Sensor Signal Conditioner
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Maker  ZMD [Zentrum Mikroelektronik Dresden AG]
Homepage  http://www.zmdi.com
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ZMD31035 Datasheet(HTML) 1 Page - Zentrum Mikroelektronik Dresden AG

   
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The Analog Mixed Signal Company
ZMD31035
Automotive Sensor Signal
Conditioner
PRELIMINAR Y
Benefits
No external trimming components required
PC-controlled configuration and calibration
via one-wire interface – simple, low cost
High accuracy (±0.1% FSO @ -25 to 85°C;
±0.25% FSO @ -40 to 125°C)
Brief Description
The ZMD31035 is a CMOS integrated circuit for highly-
accurate amplification and sensor-specific correction of
bridge sensor signals. Digital compensation of sensor
offset, sensitivity, temperature drift and non-linearity is
accomplished via a 16-bit RISC micro-controller running
a correction algorithm with calibration coefficients stored
in a non-volatile EEPROM.
The ZMD31035 is adjustable to nearly all piezo-resistive
bridge sensors. Measured values are provided at the
analog voltage output or at the one-wire-interface.
The digital one-wire-interface can be used for a simple
PC-controlled calibration procedure, in order to program
a set of calibration coefficients into an on-chip EEPROM.
Thus a specific sensor and a ZMD31035 are mated digi-
tally: fast, precise and without the cost overhead associ-
ated with trimming by external devices or laser.
The ZMD31035 is optimized for automotive environ-
ments by it’s protection circuitry and excellent electro-
magnetic compatibility.
• Evaluation kit will be available, containing PCBs,
SSOP14 samples, software, documentation
• Support for industrial mass calibration available
• Quick circuit customization possible for large
production volumes
VDDB
VTN
VBN
VSSB
AOUT
VBP
VSSE
VSSA
VSSA
VSS
VDDE
VDD
CLK
DI
V
OUT
OWI
GND
SUPPLY
100n
15n
100n
100n
VDDA
4.5...5.5V
BRIDGE
SENSOR
TEMP.
SENSING
DIODE
Features
Digital compensation of sensor offset, sensitivity,
temperature drift and non-linearity
Adjustable to nearly all piezo-resistive bridge sensors types
Digital one-shot calibration: quick and precise
Selectable temperature compensation reference:
internal or external diode
Output options: analog voltage (0 to 5V) or one-wire-interface
(LIN compatible protocol)
Digital sensor calibration via one-wire-interface
Sampling rate typically 125Hz
High voltage protection
Reverse polarity and short circuit protection
Operation temperature –40 to +125°C
Supply voltage 4.5 to 5.5V
Application Circuit


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