Published by Infineon Technologies AG

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Published by

Infineon Technologies AG,

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D-81669 München

© Infineon Technologies AG 2003. All Rights Reserved.

Attention please!

The information herein is given to describe certain components

and shall not be considered as a guarantee of characteristics.

Terms of delivery and rights to technical change reserved.

We hereby disclaim any and all warranties, including but not

limited to warranties of non-infringement, regarding circuits,

descriptions and charts stated herein.

Information

For further information on technology, delivery terms

and conditions and prices please contact your nearest

Infineon Technologies Office in Germany or our

Infineon Technologies Representatives worldwide.

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Due to technical requirements components may contain dan-

gerous substances. For information on the types in question

please contact your nearest Infineon Technologies Office.

Infineon Technologies Components may only be used in life-

support devices or systems with the express written approval

of Infineon Technologies, if a failure of such components can

reasonably be expected to cause the failure of that life-support

device or system, or to affect the safety or effectiveness of that

device or system. Life support devices or systems are intended

to be implanted in the human body, or to support and/or main-

tain and sustain and/or protect human life. If they fail, it is rea-

sonable to assume that the health of the user or other persons

may be endangered.

Clamping & Reverse

Voltage Protection

Supply Regulator

Hall

Supply

Analog

Supply

Digital

Supply

Hyst Comp

Main Comp

V

S

Enable

Overtemperature

& Short-Circuit

Protection

OUT

N-Channel

Open Drain

Spinning

Hall Probe

Chopper

& Filter

Offset

DAC

Bias for Temperature

& Technology

Compensation

Oscillator

Tracking ADC

Interface

Digital

min.

max.

Algorithm

PROM

K-Factor

inv. Bit

B

TPO

Actual Switching Level

Reset

GND

+

_

Ordering No. B138-H8199-X-X-7600

Printed in Germany

PS 05032.

NB

Parameter

Unit

Value

Operating voltage

3.3 ... 18

V

Power on time

<1

ms

B

TPO

20 ... 75

mT

Programm. Range TC

magnet

-1200 ... 500

ppm/K

Frequency range

0 ... 4500

Hz

Temperature range

T

j

-40 ... +155

˚C

k

0 ... 100

%

B [mT]

B

max

B

min

B

TPO

B

cal

Static Switching

Dynamic Switching Point

Pre-Calibrated

B

Φ [˚]

Type

Package

Sales Code

TLE4980C

Q62705-K675

PSSO-3-9

Block Diagram

The IC consists of a chopped

hall-probe (mono-cell in the

centre of the chip) with a

chopped preamplifier. Next

there is a summing node for

threshold level adjustment.

The threshold switching is actu-

ally done in the main compara-

tor. A converter feeds a digital

calibration logic. This logic

monitors the digitalized signal

by looking for minimum and

maximum values and also cal-

culates correction values for

threshold adjustment. The

static switching level is simply

done by fetching a digital value

out of a PROM.

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