TLV4976-2K [INFINEON]
Value Optimized Hall Effect Switch with Current Interface for Industrial and Consumer Applications; 价值优化的霍尔效应开关，适用于工业和消费应用的电流接口
| 型号： | TLV4976-2K |
| 厂家： | 
Infineon |
| 描述： | Value Optimized Hall Effect Switch with Current Interface for Industrial and Consumer Applications |
| 文件： | 总17页 (文件大小：1436K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TLV4976-2K
Value Optimized Hall Effect Switch with Current Interface for
Industrial and Consumer Applications
Data Sheet
Rev. 1.1, 2010-08-02
Sense & Control
Edition 2010-08-02
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2010 Infineon Technologies AG
All Rights Reserved.
Legal Disclaimer
The information given in this document shall in no event be regarded as a guarantee of conditions or
characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any
information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties
and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights
of any third party.
Information
For further information on technology, delivery terms and conditions and prices, please contact the nearest
Infineon Technologies Office (www.infineon.com).
Warnings
Due to technical requirements, components may contain dangerous substances. For information on the types in
question, please contact the nearest Infineon Technologies Office.
Infineon Technologies components may be used in life-support devices or systems only 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 maintain and sustain
and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may
be endangered.
TLV4976-2K
Data Sheet
3
Rev. 1.1, 2010-08-02
TLV4976-2K
Value Optimized Hall Effect Latches for Industrial and Consumer Applications
Revision History: 2010-08-02, Rev. 1.1
Previous Revisions: 1.0
Page
Subjects (major changes since last revision)
all
change to halogen free package
We Listen to Your Comments
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Your feedback will help us to continuously improve the quality of this document.
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Data Sheet
4
Rev. 1.1, 2010-08-02
TLV4976-2K
Table of Contents
Table of Contents
1
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Target Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1
1.2
1.3
2
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pin Configuration (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Functional Block Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1
2.2
2.3
2.4
2.5
3
Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Application Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Electrical and Magnetic Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1
3.2
3.3
3.4
4
Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Package Outline PG-SC59-3-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Distance between Chip and Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Package Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1
4.2
4.3
4.4
Data Sheet
5
Rev. 1.1, 2010-08-02
Hall Effect Switch
TLV4976-2K
1
Product Description
1.1
Overview
The TLV4976-2K is a high precision unipolar Hall switch with a two wire,
6mA/14mA current interface in a SMD package. A chopped measurement
principle provides high stability switching thresholds for operating
temperatures between -40°C and 85°C.
1.2
Features
•
•
•
•
•
•
•
•
•
•
•
3.0V to 18V supply voltage operation
High sensitivity and high stability of the magnetic switching points
High resistance to mechanical stress by Active Error Compensation
Reverse battery protection (-18V)
Superior temperature stability
Low jitter (typ. 1µs)
High ESD performance (± 4kV HBM)
Digital output signal with current modulation 6 / 14mA
Unipolar version
SMD package SC59 (SOT23 compatible), lead free and halogen free
For industrial and consumer applications, not qualified for automotive applications
1.3
Target Applications
The sensor targets all applications where a high precision unipolar magnetic switch is required (e.g. position
sensing). Due to the current interface the number of wires required in the application is minimized thus saving
costs and increasing reliability. This is specially helpful in all applications where the microcontroller is not on the
same PCB as the Hall switch but in some distance.
Product Name
Product Type
Ordering Code
Package
TLV4976-2K
Hall Effect Switch
SP000803734
PG-SC59-3-5
Data Sheet
6
Rev. 1.1, 2010-08-02
TLV4976-2K
Functional Description
2
Functional Description
2.1
General
The TLV4976-2K is an integrated circuit Hall-effect sensor designed specifically for highly accurate applications.
Precise magnetic switching thresholds and high temperature stability are achieved by active error compensation
circuits and chopper techniques on the chip. The IC has a current interface with a 6mA / 14mA output. A magnetic
south pole (positive field) with strength above Brp turns the output to low (6mA) and a magnetic field with strength
below Bop turns it to high (14mA).
2.2
Pin Configuration (top view)
Center of
Sensitive Area
3
± 0.15
0.8
1
2
± 0.15
1.5
SC59
Figure 1
Pin Configuration and Center of Sensitive Area
2.3
Pin Description
Table 1
Pin Description
Pin No.
Symbol
VS
Function
Comment
1
2
3
Supply voltage
No internal connection
Ground
N.C.
GND
Data Sheet
7
Rev. 1.1, 2010-08-02
TLV4976-2K
Functional Description
2.4
Block Diagram
VS
Voltage Regulator
reverse polarity protected
Bias and
Compensation
Circuits
Oscillator
and
Sequencer
8 mA
Ref
Low
Pass
Filter
Comparator
with
Hysteresis
Amplifier
Chopped
Hall Probe
Figure 2
Functional Block Diagram
2.5
Functional Block Description
The chopped Hall IC Switch comprises a Hall probe, bias generator, compensation circuits, oscillator and output
transistor.
The bias generator provides currents for the Hall probe and the active circuits. Compensation circuits stabilize the
temperature behavior and reduce technology variations.
The Active Error Compensation rejects offsets in signal stages and the influence of mechanical stress to the Hall
probe caused by molding and soldering processes and other thermal stresses in the package.
This chopper technique together with the threshold generator and the comparator ensure high accurate magnetic
switching points.
The current consumption depends on the switching status.
Data Sheet
8
Rev. 1.1, 2010-08-02
TLV4976-2K
Functional Description
Applied
Magnetic
Field
Brp
Bop
td
td
tf
t
r
IS
90%
10%
Figure 3
Timing Diagram
IS
ISHIGH
ISLOW
0
Bop
Brp
B
Figure 4
Output Signal
Data Sheet
9
Rev. 1.1, 2010-08-02
TLV4976-2K
Specification
3
Specification
3.1
Application Circuit
The advantage of the current interface is, that only two wires are necessary to connect the sensor.
At least one series resistor is required to convert the two output states of the Hall sensor from current consumption
to a voltage information.
A typical value for RL is 100Ω. This gives a typical signal voltage level VSIG = 0.8V in the Off state and 1.4V in the
On state.
If the sensor is operated in an application environment with disturbances on the supply line, an additional series
resistor RS is recommended. The maximum value for the series resistor RS can be calculated using the following
formula:
V
Supplymin – V
Smin
---------------------------------------------
R
=
– R
Smax
L
I
Shighmax
VS_min is the minimal supply voltage which might occur due to disturbances on the supply line VS.
Example: VSupplymin = 6V; VSmin = 3V; RL = 100Ω; IShighmax = 17mA : RSmax = 76.5Ω
VSupply
RS
VS
TLV
4976-2K
µC
4.7 nF
GND
VSIG
Input
RL
µC GND
Figure 5
Application Circuit
Data Sheet
10
Rev. 1.1, 2010-08-02
TLV4976-2K
Specification
3.2
Absolute Maximum Ratings
Table 2
Absolute Maximum Rating Parameters
Symbol
Parameter
Limit Values
Unit
Note / Test Condition
Min.
Max.
125
150
18
Maximum Ambient Temperature TA
Maximum Junction Temperature TJ
-40
-40
-18
-50
°C
°C
V
Supply Voltage
VS
Supply current through protection IS
device
+50
mA
Storage temperature
Magnetic flux density
ESD robustness HBM1)
TS
-40
–
150
°C
B
unlimited mT
kV
VESD,HBM
4
R = 1.5kΩ,
C = 100pF
TA = 25°C
1) Human Body Model (HBM) tests according to: EOS/ESD Association Standard S5.1-1993 and Mil. Std. 883D method
3015.7
Attention: Stresses above the max. values listed here may cause permanent damage to the device.
Exposure to absolute maximum rating conditions for extended periods may affect device
reliability. Maximum ratings are absolute ratings; exceeding only one of these values may
cause irreversible damage to the integrated circuit.
3.3
Operating Range
The following operating conditions must not be exceeded in order to ensure correct operation of the Hall Effect
Switch.
All parameters specified in the following sections refer to these operating conditions unless otherwise mentioned.
Table 3
Operating Conditions Parameters
Symbol
Parameter
Values
Typ.
Unit Note / Test Condition
Min.
Max.
18
Supply voltage
VS
Tj
3
V
Junction temperature
- 40
85
°C
3.4
Electrical and Magnetic Characteristics
Product characteristics involve the spread of values guaranteed within the specified voltage and ambient
temperature range. Typical characteristics are the median of the production.
Table 4
General Electrical Characteristics1)
Symbol
Parameter
Values
Typ.
6
Unit
Note / Test Condition
Min.
Max.
Supply current low
Supply current high
ISLOW
ISHiGH
5
7
mA
mA
B > BRP
VS = 3V ... 18V
12
14
17
B < BOP
VS = 3V ... 18V
Data Sheet
11
Rev. 1.1, 2010-08-02
TLV4976-2K
Specification
Table 4
General Electrical Characteristics1) (cont’d)
Parameter
Symbol
Values
Unit
Note / Test Condition
Min.
Typ.
–
Max.
0.2
Reverse current
Output fall time
Output rise time
Chopper frequency
Switching freq.
Delay time3)
ISR
tf
mA
µs
VS = -18V
–
–
–
0.4
0.4
320
–
1.6
RS = 100Ω
tr
1.6
µs
fOSC
fSW
td
kHz
kHz
µs
152)
–
–
–
13
1
Output jitter4)
tQJ
µsRMS Typical value for square wave
signal 1kHz
Power-on time5)
Thermal resistance6)
tPON
–
–
13
–
–
µs
VS ≥ 3.0V
RthJA
100
K/W
PG-SC59-3-5
1) over operating range, unless otherwise specified. Typical values correspond to VS = 12V and TA = 25°C
2) To operate the sensor at the max. switching frequency, the value of the magnetic signal amplitude must be 1.4 times higher
than for static fields. This is due to the - 3dB corner frequency of the low pass filter in the signal path
3) Systematic delay between magnetic threshold reached and output switching
4) Jitter is the unpredictable deviation of the output switching delay
5) Time from applying VS ≥ 3.0V to the sensor until the output state is valid
6) Thermal resistance from junction to ambient
Calculation of the ambient temperature:
e.g. for VS = 12.0V, RS = 100W, ISHIGHtyp = 14mA :
Power Dissipation: PDIS = 148.4mW.
In TA = Tj – (RthJA x PDIS) = 175°C – (100K/W x 0.15W)
Resulting max. ambient temperature: TA = 160°C
Table 5
Magnetic Characteristics1)
Symbol T (°C)
Parameter
Values
Typ.
2.9
Unit
Note / Test Condition
Min.
0.53
0.5
0.47
2.1
2.0
1.9
0.5
-
Max.
5.1
4.8
4.5
6.4
6.0
5.6
3.0
-
Operating point
Release point
Hysteresis
BOP
-40
25
85
-40
25
85
mT
2.7
2.5
BRP
4.8
mT
4.5
4.2
BHYS
1.8
mT
for T = 25°C
Temperature compensation of TC
magnetic thresholds
-1000
ppm/K
Typ. value for ΔB / Δt
> 12 mT/ms
Repeatability of magnetic
thresholds2)
BREP
-
40
-
µTRMS
1) over operating range, unless otherwise specified. Typical values correspond to VS = 12 V.
2) BREP is equivalent to the noise constant
Data Sheet
12
Rev. 1.1, 2010-08-02
TLV4976-2K
Specification
Field Direction Definition
Positive magnetic fields are defined with the south pole of the magnet to the branded side of package.
N
S
Branded Side
Figure 6
Definition of magnetic field direction
Data Sheet
13
Rev. 1.1, 2010-08-02
TLV4976-2K
Package Information
4
Package Information
4.1
Package Outline PG-SC59-3-5
±0.1
1.1
±0.1
3
0.15 MAX.
0.2+0.1
0.1
+0.05
3x0.4
-0.1
M
0.1
3
±0.15
0.45
1
2
+0.1
0.15
0.95
-0.05
0.95
(0.55)
0˚...8˚ MAX.
GPS09473
Figure 7
PG-SC59-3-5 Package Outline (All dimensions in mm)
Data Sheet
14
Rev. 1.1, 2010-08-02
TLV4976-2K
Package Information
4.2
Footprint
0.8
0.8
1.2
0.8
1.2
0.8
Wave Soldering
Reflow Soldering
Figure 8
Footprint PG-SC59-3-5
Data Sheet
15
Rev. 1.1, 2010-08-02
TLV4976-2K
Package Information
4.3
Distance between Chip and Package
Branded Side
d: Distance chip to upper side of IC
±0.1
d = 0.56
mm
Figure 9
Distance between chip and package
4.4
Package Marking
Year (y) = 0...9
Month (m) = 1...9,
o - October
VD2
n - November
d - December
Figure 10 Marking of TLV4976-2K
Data Sheet
16
Rev. 1.1, 2010-08-02
w w w . i n f i n e o n . c o m
Published by Infineon Technologies AG
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