E524.07 Datasheet, PDF (1/2 Pages) ELMOS Semiconductor AG – SIGNAL CONDITIONING IC FOR DIRECT DRIVEN ULTRASONIC SENSORS

SIGNAL CONDITIONING IC FOR DIRECT DRIVEN ULTRASONIC SENSORS
PRELIMINARY INFORMATION - JUL 18, 2014
E524.07
Features
ÿÿ Transformerless direct transducer driver
ÿÿ Programmable to transducer frequencies between
38kHz and 72kHz
ÿÿ Supply voltage independent performance
ÿÿ Optimized short & long range performance by:
- active and passive damping mechanisms
- sensitivity time control
ÿÿ Fully integrated digital signal conditioning
ÿÿ Programmable transducer voltage & burst length
ÿÿ Programmable receiver amplifier
ÿÿ Bi-directional serial digital interface
ÿÿ Supply for external controller (3.3V / max. 10mA)
ÿÿ Transducer diagnosis information
ÿÿ Embedded EEPROM for calibration data
ÿÿ Chip ID for traceability
Applications
ÿÿ Ultrasonic park assist systems (USPA, PAS,...)
ÿÿ Industrial distance measuring
ÿÿ Robotics
Typical Application Circuit
General Description
The device builds the core for a robust and easy-to-han-
dle distance measurement system, while offering flex-
ibility for customer applications.
A driver unit stimulates the direct connected ultrasonic
transducer. Driver frequency, transducer voltage, burst
length, amplifier gain and other parameters are user
configurable. Active and passive damping mechanisms
combined with STC (Sensitivity Time Control) optimize
short and long range performance.
The received echo signal is amplified, converted and
digitally processed. After processing the signal can be
read out. The E524.07 supports a bi-directional 2-pin
synchronous serial digital interface to communicate
with an external µC.
Application relevant settings can be stored in EEPROM
during an End-Of-Line calibration by the customer.
Ordering Information
Ordering No. Temp Range Interface Package
E52407A52C -40°C to +105°C Serial QFN20L4
ECU
Sensor Module
Ultrasonic
Transducer
VSUP_LINE
RSUP
CSUP1
GND
CDRV
DSUP
VDRV
DRV1
VSUP
CSUP2
RPROG
GNDP
VPROG
C2
RAING*)
C1
CAIN*)
RAINS*)
DRV2
AING
AINS
VDDD
GNDD
DT
CK
E524.07
VDDA
GNDA
VDD
CVDDD
External
µC
EUSART
CVDDA
Interface
DATA
*) for improved EMC
This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice.
Elmos Semiconductor AG
Info Sheet
QM-No.: 25IS0118E.01