Infineon TLE4997E2 Data Sheet
Data Sheet, V 2.10, April 2020
TLE4997E2
Programmable Linear Hall Sensor
Sensors
Never stop thinking.
Edition 2020-04
Published by Infineon Technologies AG,
Am Campeon 1-12,
85579 Neubiberg, Germany
© Infineon Technologies AG 2020.
All Rights Reserved.
Attention please!
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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
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TLE4997E2
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Revision History: 2020-04 V2.10
Previous Version: V 2.09, January 2018
Page Subjects (major changes since last revision)
All Updated product name to TLE4997E2
16 Table 5: removed unintended content
TLE4997E2
Table of Contents Page
1Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2 Target Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.3 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3 Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.4 Further Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.5 Transfer Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3 Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5 Electrical and Magnetic Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6 Signal Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.1 Magnetic Field Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.2 Gain Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.3 Offset Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.4 DSP Input Low Pass Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.5 DAC Input Interpolation Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.6 Clamping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7 Error Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.1 Voltages Outside the Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.2 Open Circuit of Supply Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.3 Not Correctable EEPROM Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8 Temperature Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
8.1 Parameter Calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
9Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
9.1 Calibration Data Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
9.2 Programming Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
9.3 Laboratory Evaluation Programmer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
10 Application Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
11 Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Data Sheet 4 V 2.10, 2020-04
TLE4997E2
List of Figure s Page
Figure 1 Pin Configuration and Hall Cell Location . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 2 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 3 Examples of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 4 Ratiometry Error Band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 5 Signal Processing Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 6 DSP Input Filter (Magnitude Plot) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 7 DAC Input Filter (Magnitude Plot) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 8 Clamping Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 9 EEPROM Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 10 Application Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 11 PG-SSO-3-10 (Plastic Green Single Small Outline Package) . . . . . . . 33
Data Sheet 5 V 2.10, 2020-04
TLE4997E2
List of Tables Page
Table 1 Pin Definitions and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 2 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 3 Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 4 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 5 Magnetic Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 6 Range Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 7 Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 8 Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 9 Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 10 Low Pass Filter Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 11 Low Pass Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 12 Clamping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 13 Undervoltage and Overvoltage (All values with RL ≥ 10k) . . . . . . . . . . 25
Table 14 Open Circuit (OBD Parameters) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 15 EEPROM Error Signalling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 16 Temperature Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 17 Calibration Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Table 18 Programming Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Data Sheet 6 V 2.10, 2020-04
TLE4997E2Programmable Linear Hall Sensor
1Overview
1.1 Features
• High linear and ratiometric push-pull rail-to-rail output
signal
• 20-bit Digital Signal Processing
• Digital temperature compensation
• 12-bit overall resolution
• Operates from -40°C up to 150°C
• Low drift of output signal over temperature and lifetime
• Programmable parameters stored in EEPROM with single bit error correction:
– magnetic range and magnetic sensitivity (gain)
– zero field voltage (offset)
– bandwidth
– polarity of the output slope
– clamping option
– temperature coefficient for all common magnets
– memory lock
• Re-programmable until memory lock
• Single supply voltage 4.5 - 5.5 V (4 - 7 V in extended range)
• Operation between -200 mT and +200 mT within three ranges
• Slim 3-pin package (Green)
• Reverse polarity and overvoltage protection for all pins
• Output short circuit protection
• On-board diagnostics (wire breakage detection, undervoltage, overvoltage)
• Digital readout of internal temperature and magnetic field values in calibration mode.
• Individual programming and operation of multiple sensors with common power supply
• Two-point calibration of magnetic transfer function
• Precise calibration without iteration steps
• High immunity against mechanical stress, EMC, ESD
Type Marking Ordering Code Package
TLE4997 4997E2 SP000235288 PG-SSO-3-10
Data Sheet 7 V 2.10, 2020-04
TLE4997E2
1
Center of
Hall Probe
23
AEP03717
0.38
±0.05
2.03
±0.1
1.625
±0.1
Hall-Probe
Branded Side
Overview
1.2 Target Applications
• Robust replacement of potentiometers
– No mechanical abrasion
– Resistant to humidity, temperature, pollution and vibration
• Linear and angular position sensing in automotive applications like pedal position,
suspension control, valve or throttle position, headlight levelling and steering angle
• High current sensing for battery management, motor control, and electronic fuse
1.3 Pin Configuration
Figure 1 shows the location of the Hall element in the chip and the distance between the
Hall probe and the surface of the package.
Figure 1 Pin Configuration and Hall Cell Location
Table 1 Pin Definitions and Functions
Pin No. Symbol Function
1
2
3
Data Sheet 8 V 2.10, 2020-04
V
DD
GND
OUT
Supply voltage / programming interface
Ground
Output voltage / programming interface
HALL
Bias
A
D
DSP
D
A
A
D
Temp.
Sense
ROM
EEPROM
Interface
enable
OUT
V
DD
GND
Supply
OBD
V
DD
2 General
2.1 Block Diagram
Figure 2 shows a simplified block diagram.
TLE4997E2
General
Figure 2 Block Diagram
2.2 Functional Description
The linear Hall IC TLE4997E2has been designed specifically to meet the demands of
highly accurate rotation and position detection, as well as for current measurement
applications.
The sensor provides a ratiometric analog output voltage, which is ideally suited to
Analog-to-Digital (A/D) conversion with the supply voltage as a reference.
The IC is produced in BiCMOS technology with high voltage capability and also provides
reverse polarity protection.
Digital signal processing using a 16-bit DSP architecture and digital temperature
compensation guarantees excellent stability over a long period of time.
The minimum overall resolution is 12 bits. Nevertheless, some internal stages work with
resolutions up to 20 bits.
Data Sheet 9 V 2.10, 2020-04
TLE4997E2
General
2.3 Principle of Operation
• A magnetic flux is measured by a Hall-effect cell.
• The output signal from the Hall-effect cell is converted from Analog to Digital signals.
• The chopped Hall-effect cell and continuous-time A to D conversion provide very low
and stable magnetic offset.
• A programmable Low-Pass filter reduces the noise.
• The temperature is measured and A to D converted.
• Temperature compensation is processed digitally using a second order function.
• Digital processing of output voltage is based on zero field and sensitivity value.
• The output voltage range can be clamped by digital limiters.
• The final output value is D to A converted.
• The output voltage is proportional to the supply voltage (ratiometric DAC).
V
• An On-Board-Diagnostics (OBD) circuit connects the output to
DD
or GND in case of errors.
2.4 Further Notes
Product qualification is based on “AEC Q100” (Automotive Electronics Council - Stress
test qualification for integrated circuits).
Data Sheet 10 V 2.10, 2020-04
TLE4997E2
0
5
50
-50
5100
-100
5200
-200
V
OUT
(V)
V
OUT
V
OUT
00
B (mT)
V
OUT
(V)
B (mT)
V
OUT
(V)
B (mT)
000
Example 1:
- Bipolar
Example 2:
-Unipolar
-Big offset
- Outp ut for 3.3 V
Example 3:
- Bipolar
- Inverted (neg. gain)
General
2.5 Transfer Functions
The examples in Figure 3 show how easily different magnetic field ranges can be
mapped to the output voltage.
• Polarity Mode:
– Unipolar: Only North- or South-oriented magnetic fields are measured.
– Bipolar: Magnetic fields can be measured in both orientations.
The limit points must not be symmetric to the zero field point.
• Inversion: The gain values can be set positive or negative.
Figure 3 Examples of Operation
Note: Due to the ratiometry, voltage drops at the V
line are imaged in the output
DD
signal.
Data Sheet 11 V 2.10, 2020-04
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