E524.02 Datasheet, PDF (1/2 Pages) ELMOS Semiconductor AG – DIGITAL ULTRASONIC TRANSCEIVER DRIVER AND SIGNAL PROCESSOR

DIGITAL ULTRASONIC TRANSCEIVER DRIVER AND SIGNAL PROCESSOR
PRODUCTION DATA - APR 04, 2012
E524.02
Features
General Description
ÿ Minimum Component Ultrasonic
Park Assist Solution
ÿ Bi-directional Communication via Supply
ÿ Single Transceiver Architecture
ÿ Programmable to transducer frequencies
40kHz to 58kHz
ÿ Supports “Receive Only” Mode
ÿ High Sensitivity and Low Noise Down to 0.5µVRMS
ÿ Driver Power and Signal Gain Programmable
ÿ Digital Filtering and Signal Processing
ÿ 14 Programmable Threshold / Time Settings for
Echo Envelope Evaluation
ÿ Embedded EEPROM to Store Settings
ÿ Automotive Supply and I/O Protection
ÿ AEC-Q100 Qualification
Applications
ÿ Ultrasonic Park Assist (USPA)
ÿ Industrial Distance Measuring
ÿ Robotics
Typical Applications Circuit
The E524.02 offers ultrasonic range detection with
minimum component count.
In transmit mode, the IC drives a center tapped trans-
former directly. Driver frequency, transmitted burst
power and other parameters are user configurable and
stored in embedded EEPROM via a single wire IO pin
at assembly. The device features settings for short and
long distance measurement.
In receive mode, the echo signal is first amplified with
a programmable gain amplifier and converted by an
internal analog-to-digital converter. The signal is sub-
sequently digitally filtered and compared. Comparator
thresholds are adjustable via registers for defined inter-
val lengths within a measurement period. The resulting
signal is available via the bi-directional supply line for
the hosting BCU. A “Receive Only” mode enables the re-
ception of indirect echos supports. To minimize wires,
the E524.02 communication over a single power sup-
ply line.
Ordering Information
Product ID
E524.02
Temp. Range
-40°C to +85°C
Package
QFN20L4
Body Control Unit
Ri
DATA_OUT
DATA_IN
VI_BCU
ELMOS
Timer_Capture
Ultrasonic Module
RTD
VSUP_
DATA
GND
DSUP
VSUP
DRV1
DRV2
CSUP
Ultrasonic-Transducer
CTD
AING
CAIN
AINS
VDDD
CVDDD
RIO_S
IO
CIO
E524.02
TDO
TCK
TDI
TMS
VDDA GNDA GNDD GNDP TMEN
CVDDA
ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.
ELMOS Semiconductor AG
Info Sheet
QM-No.: 25IS0100E.00