TLE4998C8(D)

General

Data Sheet

6

Revision 1.1, 2017-01

2

General

2.1

Block Diagram

Figure 2-1 shows is a simplified block diagram.

Figure 2-1

Block Diagram of the TLE4998C8(D) with the SPC interface

2.2

Functional Description

The linear Hall IC TLE4998C8(D) has been designed specifically to meet the requirements of highly accurate

angle and position detection.

The sensor provides a digital SPC (Short PWM Code) signal, based on the standardized SENT (Single Edge

Nibble Transmission, SAE J2716) protocol. The SPC protocol allows transmissions initiated by the ECU. Two

further operation modes are available.

•

“range selection” for dynamically switching of the measurement range during operation

•

“ID selection” to build a bus system with up to 4 IC’s on a single output line and a common supply, which can

be individually accessed by the ECU.

Each transmission sequence contains an adjustable number of nibbles representing the magnetic field, the

temperature value and a status information of the sensor. The interface is further described in Chapter 7.

The output stage is an open-drain driver pulling the output pin to low only. Therefore, the high level needs to be

obtained by an external pull-up resistor. This output type has the advantage that the receiver may use an even

lower supply voltage (e.g. 3.3 V). In this case the pull-up resistor must be connected to the given receiver supply.

The IC is produced in BiCMOS technology with high voltage capability and it also has reverse-polarity protection.

Digital signal processing using a 16-bit DSP architecture together with digital temperature and stress

compensation guarantees excellent stability over the whole temperature range and life time.

spinning

HALL

A

D

DSP

A

D

Temp.

Sense

ROM

EEPROM

Interface

OUT

VDD

GND

Supply

TST

Stress

Sense

SPC

Bias