The
Analog
Mixed Signal Company
ZMD31030
Automotive Sensor Signal
Conditioner with LIN Interface
P R E L I M I N A R Y
Brief Description
ZMD31030 is a CMOS integrated circuit for highly-accurate
amplification and sensor-specific correction of bridge sensor
and temperature 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 coeffi-
cients stored in a non-volatile EEPROM.
The ZMD31030 is adjustable to nearly all piezo-resistive bridge
sensors. Measured values are provided at the PWM output or at
the LIN interface.
The digital LIN bus interface can be used for a simple PC-con-
trolled calibration procedure, in order to program a set of cali-
bration coefficients into an on-chip EEPROM. Thus a specific
sensor and a ZMD31030 are mated digitally: fast, precise and
without the cost overhead associated with trimming by external
devices or laser.
The ZMD31030 is optimized for automotive environments by it's
protection circuitry and excellent electromagnetic compatibility.
Evaluation kit will be available, containing PCBs,
SSOP20 samples, software, documentation
Support for industrial mass calibration available
Quick circuit customization possible for large
production volumes
ZMD31030
VSSB
SENSOR BRIDGE
VBN
VBP
VDDB
VTN
ANALOG SUPPLY
VDDA
CONTROL
ANALOG
SIGNAL
CONDITIONING
DIGITAL
SIGNAL
POST
PROCESSING
POWER MANAGEMENT
AND
PROTECTION CIRCUITS
I/O
IF
LIN
CONTROLLER
LIN
TRANSCEIVER
TEST IF
DIGITAL SUPPLY
VDD
VSSA
ANALOG
GROUND
VSS
DIGITAL
GROUND
VB
VBAT
30
k
LIN
GND
LIN
DI
CLK
Features
Digital compensation of sensor offset, sensitivity,
temperature drift and non-linearity
Adjustable to nearly all piezo-resistive bridge sensor types
Digital one-shot calibration: quick and precise
Selectable temperature compensation reference:
internal or external diode
Selectable separate input channel for an external
temperature sensor
Output options: PWM (bridge sensor signal)
or LIN interface (bridge and temp. sensor signal)
Digital sensor calibration via LIN interface
Sampling rate typically 125Hz
High voltage protection
Reverse polarity and short circuit protection
Operation temperature -40 to +125C
Supply voltage 8 to 18V
Benefits
No external trimming components required
PC-controlled configuration and calibration
via digital LIN bus interface simple, low cost
High accuracy (0.1% FSO @ -25 to 85C;
0.25% FSO @ -40 to 125C)
Block Schematic and Application Circuit (Example)
www.lin-subbus.de
Ordering Information
Ordering Code
Description
Operating
Package
Device
Shipping Form**
Temperature Range
Type
Marking
ZMD31030AD ES
engineering samples
die
waffle tray
as dice in waffletray
ZMD31030AF ES
engineering samples
SSOP20
ZMD
sample box or tube
as finished parts
31030AF
YYWW***
ZMD31030AAB*
dice on tested
-40C to +125C
die
6" wafer
unsawn wafer
ZMD31030AAC*
dice on tested
-40C to +125C
die
sawn 6" wafer
sawn wafer
on plastic frame
ZMD31030AAD*
dice in waffle tray
-40C to +125C
die
waffle tray
(100 dice / tray)
ZMD31030AAF-T*
finished parts
-40C to +125C
SSOP20
ZMD
tube
in tube
31030AAF
(66 parts / tube)
YYWW
ZMD31030AAF-R*
finished parts
-40C to +125C
SSOP20
ZMD
tape on reel
in tape on reel
31030AAF
(2000 parts / reel)
YYWW
ZMD31030KIT
evaluation kit
box with PCBs,
CD-ROM,
SSOP20 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. 0.5 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
Engine management
Comfort functions
LIN (Local Interconnect Network)
Low-cost open bus standard for electronic components in cars
Sub-bus for CAN (Controller Area Network)
Single master / multiple slave concept
Single-wire data transmission with battery voltage swing
colosseum-group.de
www.lin-subbus.de
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