The
Analog
Mixed Signal Company
ZMD31035
Automotive Sensor Signal
Conditioner
P R E L I M I N A R 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 85C;
0.25% FSO @ -40 to 125C)
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
ZMD31035
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 +125C
Supply voltage 4.5 to 5.5V
Application Circuit
Ordering Information
Ordering Code
Description
Operating
Package
Device
Shipping Form**
Temperature Range
Type
Marking
ZMD31035AD ES
engineering samples
die
waffle tray
as dice in waffletray
ZMD31035AF ES
engineering samples
SSOP14
ZMD
sample box or tube
as finished parts
31035AF
YYWW ***
ZMD31035AAB*
dice on tested
-40C to +125C
die
6" wafer
unsawn wafer
ZMD31035AAC*
dice on tested
-40C to +125C
die
sawn 6" wafer
sawn wafer
on plastic frame
ZMD31035AAD*
dice in waffle tray
-40C to +125C
die
waffle tray
(100 dice / tray)
ZMD31035AAF-T*
finished parts
-40C to +125C
SSOP14
ZMD
tube
in tube
31035AAF
(77 parts / tube)
YYWW
ZMD31035AAF-R*
finished parts
-40C to +125C
SSOP14
ZMD
tube
in tape on reel
31035AAF
(2000 parts /reel)
YYWW
ZMD31035KIT
evaluation kit
box with PCBs, CD-ROM,
SSOP14 samples
*
Serial parts available from serial production start
**
The quantity ordered should be a multiple of the quantity / packing unit as specified
*** Optional labeled with "ES" in addition
www.zmd.biz
For further
information:
ZMD AG 2004 Rev. 0.2 Preliminary
ZMD AG
Grenzstrasse 28
01109 Dresden
Germany
Tel +49.351.8822.366
Fax +49.351.8822.337
sales@zmd.de
ZMD America, Inc.
15373 Innovation Drive, Suite 115
San Diego, CA 92128
USA
Tel +1.858.674.8070
Fax +1.858.674.8071
sales@zmda.com
ZMD America, Inc.
201 Old Country Road, Suite 204
Melville, NY 11747
USA
Tel +1.631.549.2666
Fax +1.631.549.2882
sales@zmda.com
This information applies to a product under development. Its characteristics and specifications are subject to change without notice. ZMD assumes no obligation regarding future manufacture
unless otherwise agreed to in writing. The information furnished hereby is believed to be true and accurate. However, ZMD shall not be liable to any customer, licencee or any other third
party for any damages in connection with or arising out of the furnishing, performance or use of this technical data. No obligation or liability to any customer, licencee or any other third party
shall result from ZMD's rendering of technical or other services.
Application Examples
Detection of low-/overpressure in fuel tanks
MAP Sensors
Hydraulic reservoir pressure monitoring for ABS
and power steering
colosseum-group.de
Engine management
Comfort functions
Tire pressure monitoring (in combination
with wireless transmitters)
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