INFINEON TLE4976L

February 2009
TLE4976-1K / TLE4976L
High Precision Hall Effect Switch with Current Interface
Data Sheet
R e v. 2 . 0
Sense & Control
Edition 2009-02-12
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2009 Infineon Technologies AG
All Rights Reserved.
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TLE4976-1K
TLE4976L
TLE4976-1K
Revision History: 2009-02-12, Rev. 2.0
Previous Version: V1.1
“H” version substituted by “K”
6, 7
Timing and output switching diagram inserted
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Data Sheet
1
Rev. 2.0, 2009-02-12
TLE4976-1K
TLE4976L
Table of Contents
Table of Contents
1
1.1
1.2
1.3
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Target Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
3
3
3
2
2.1
2.2
2.3
2.4
2.5
2.6
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin Configuration (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Block Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Timing Diagram and Output Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
4
4
4
5
5
6
3
3.1
3.2
3.3
3.4
Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Application Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Electrical and Magnetic Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4
4.1
4.2
4.3
4.4
Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Distance between Chip and Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Data Sheet
2
12
12
14
15
15
Rev. 2.0, 2009-02-12
High Precision Hall Effect Switch with Current
Interface
1
Product Description
1.1
Overview
TLE4976-1K
TLE4976L
The TLE4976-1K and TLE4976L are high precision unipolar Hall switches
with a two wire, 6mA/14mA current interface in a SMD or leaded package.
A chopped measurement principle provides high stability switching
thresholds for operating temperatures between -40°C and 150°C.
1.2
•
•
•
•
•
•
•
•
•
•
•
•
Features
3.0V to 24V 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
Peak temperatures up to 195°C without damage
Low jitter (typ. 1µs)
High ESD performance (± 8kV HBM)
Digital output signal with current modulation 6mA / 14mA
Unipolar version
SMD package SC59 (SOT23 compatible): TLE4976-1K
Leaded package PG-SSO-3-2: TLE4976L
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
TLE4976-1K
Hall Effect Switch
SC59
TLE4976L
Hall Effect Switch
PG-SSO-3-2
Data Sheet
Ordering Code
3
Package
Rev. 2.0, 2009-02-12
TLE4976-1K
TLE4976L
Functional Description
2
Functional Description
2.1
General
The TLE4976-1K and the TLE4976L are integrated circuit Hall-effect sensors 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.
2.2
Pin Configuration (top view)
Center of
Sensitive Area
2.08 ± 0.1
3
1.35
0.8
1
1.5
± 0.15
2
± 0.15
1 2 3
PG-SSO-3-2
SC59
Figure 1
Pin Configuration and Center of Sensitive Area
2.3
Pin Description
Table 1
Pin Description for TLE4976-1K (SC59)
Pin No.
Symbol
Function
1
VS
Supply voltage
2
N.C.
No internal connection
3
GND
Ground
Table 2
Comment
Pin Description for TLE4976L (PG-SSO-3-2)
Pin No.
Symbol
Function
1
VS
Supply voltage
2
GND
Ground
3
N.C.
No internal connection
Data Sheet
± 0.1
Comment
4
Rev. 2.0, 2009-02-12
TLE4976-1K
TLE4976L
Functional Description
2.4
Block Diagram
VS
Voltage Regulator
reverse polarity protected
Bias and
Compensation
Circuits
Oscillator
and
Sequencer
8 mA
Ref
Amplifier
Chopped
Hall Probe
Figure 2
Functional Block Diagram
2.5
Functional Block Description
Low
Pass
Filter
Comparator
with
Hysteresis
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
5
Rev. 2.0, 2009-02-12
TLE4976-1K
TLE4976L
Functional Description
2.6
Timing Diagram and Output Switching
The output switching is different for theTLE4976-1K and TLE4976L. It is explained in the following section.
TLE4976-1K:
Bop
Applied
Magnetic
Field
Brp
td
td
tf
IS
tr
90%
10%
Figure 3
Timing Diagram of TLE4976-1K
IS
ISHIGH
ISLOW
0
Figure 4
Data Sheet
Brp
B op
B
Output Switching of TLE4976-1K
6
Rev. 2.0, 2009-02-12
TLE4976-1K
TLE4976L
Functional Description
TLE4976L:
B rp
Applied
Magnetic
Field
B op
td
IS
td
tf
tr
90%
10%
Figure 5
Timing Diagram of TLE4976L
IS
ISHIGH
ISLOW
0
Figure 6
Data Sheet
Bop
Brp
B
Output Switching of TLE4976L
7
Rev. 2.0, 2009-02-12
TLE4976-1K
TLE4976L
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 Smax = --------------------------------------------– RL
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
V Supply
RS
VS
4.7 nF
µC
TLE
4976x
GND
VSIG
Input
RL
µC GND
Figure 7
Data Sheet
Application Circuit
8
Rev. 2.0, 2009-02-12
TLE4976-1K
TLE4976L
Specification
3.2
Absolute Maximum Ratings
Table 3
Absolute Maximum Rating Parameters
Parameter
Symbol
Supply voltage
VS
Limit Values
Unit
Min.
Max.
– 18
– 18
– 18
18
24
26
V
Note / Test Condition
for 1h, RS+RL > 75Ω
for 5min, RS+RL > 75Ω
Supply current through
protection device
IS
– 50
+50
mA
Junction temperature
Tj
–
–
–
–
155
165
175
195
°C
Storage temperature
TS
– 40
150
°C
Magnetic flux density
B
–
unlimited mT
for 2000h (not additive)
for 1000h (not additive)
for 168h (not additive)
for 3 x 1h (additive)
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.
Table 4
ESD Protection1)
Parameter
Symbol
Limit Values
Min.
ESD Voltage
VESD
Unit
Note / Test Condition
Max.
±8
HBM, 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
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 5
Operating Conditions Parameters
Parameter
Symbol
Values
Min.
Supply voltage
Junction temperature
VS
Tj
Typ.
Unit
Max.
3
18
3
24
- 40
150
175
Data Sheet
9
Note / Test Condition
V
for 5 min, RS+RL > 100Ω
for 168h
Rev. 2.0, 2009-02-12
TLE4976-1K
TLE4976L
Specification
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.
General Electrical Characteristics1)
Table 6
Parameter
Symbol
Values
Min.
Typ.
Max.
Unit
Note / Test Condition
Supply current low
ISLOW
5
6
7
mA
B > BRP
VS = 3V ... 18V
Supply current high
ISHiGH
12
14
17
mA
B < BOP
VS = 3V ... 18V
Reverse current
ISR
–
0.2
mA
VS = -18V
Output fall time
tf
–
0.4
1.6
µs
RS = 100Ω
Output rise time
tr
–
0.4
1.6
µs
Chopper frequency
fOSC
–
320
Switching freq.
fSW
Delay time
3)
4)
Output jitter
Power-on time5)
6)
Thermal resistance
–
kHz
152)
kHz
td
–
13
µs
tQJ
–
1
–
µsRMS Typical value for square wave
signal 1kHz
tPON
–
13
–
µs
VS ≥ 3.0V
RthJA
–
100
–
K/W
SC59
190
PG-SSO-3-2
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
Data Sheet
10
Rev. 2.0, 2009-02-12
TLE4976-1K
TLE4976L
Specification
Table 7
Magnetic Characteristics1)
Parameter
Symbol Tj [°C]
Values
Min.
Typ.
Max.
-40 ... 150 5.5
9.25
11.0
-40
25
150
4.1
4.0
3.8
6.1
6.0
5.8
-40 ... 150 5.0
7.25
10.5
-40
25
150
3.1
3.0
2.9
6.1
6.0
5.8
8.2
8.0
7.7
-40 ... 150 0.5
2.0
3.0
0.5
-
2.0
-
3.5
-
Temperature compensation of TC
magnetic thresholds
-
0
-
-
-200
-
Repeatability of magnetic
thresholds2)
-
40
-
Operating point
BOP
Release point
BRP
Hysteresis
BHYS
-40
25
150
BREP
1.1
1.0
0.9
Unit
Note /
Test Condition
mT
TLE4976-1K
TLE4976L
mT
TLE4976-1K
TLE4976L
mT
TLE4976-1K
TLE4976L
ppm/°C TLE4976-1K
TLE4976L
mT
Typ. value for ∆B / ∆t
> 12 mT/ms
1) over operating range, unless otherwise specified. Typical values correspond to VS = 12 V.
2) BREP is equivalent to the noise constant
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 8
Data Sheet
Definition of magnetic field direction
11
Rev. 2.0, 2009-02-12
TLE4976-1K
TLE4976L
Package Information
4
Package Information
4.1
Package Outline
1.1 ±0.1
3 ±0.1
0.1
0.2
2.8 +0.2
-0.1
3
1
0.45 ±0.15
0.1 M
+0.1
1.6 +0.15
-0.3
3x0.4 +0.05
-0.1
0.15 MAX.
2
0.1 M
0.95
0.95
(0.55)
+0.1
0.15 -0
.05
0˚...8˚ MAX.
GPS09473
Figure 9
Data Sheet
SC59 Package Outline (All dimensions in mm)
12
Rev. 2.0, 2009-02-12
TLE4976-1K
TLE4976L
Package Information
0.8 ±0.1 x 45˚
7˚
2 A
1.52 ±0.05
1 MAX.1)
7˚
0.35 ±0.1 x 45˚
3 ±0.06
0.2
3.29 ±0.08
4.06 ±0.08
1.9 MAX.
(0.25)
0.15 MAX.
4.16 ±0.05
(0.79)
0.6 MAX.
0.2 +0.1
0.4 ±0.05
1.27±0.25
1
2
3
1.27±0.25
18 ±0.5
6 ±0.5
1-1
38 MAX.
9 +0.75
-0.5
23.8 ±0.5
12.7 ±1
A
Adhesive
Tape
Tape
6.35 ±0.4
1) No solder function area
Figure 10
Data Sheet
4 ±0.3
12.7 ±0.3
Total tolerance at 10 pitches ±1
0.25 -0.15
0.39 ±0.1
GPO05358
PG-SSO-3-2 Package Outline (All dimensions in mm)
13
Rev. 2.0, 2009-02-12
TLE4976-1K
TLE4976L
Package Information
4.2
Footprint
0.8
1.4 min
0.9
1.6
1.3
0.9
1.4 min
0.8
1.2
0.8
1.2
0.8
Wave Soldering
Reflow Soldering
Figure 11
Data Sheet
Footprint SC59
14
Rev. 2.0, 2009-02-12
TLE4976-1K
TLE4976L
Package Information
4.3
Distance between Chip and Package
Branded Side
d
d
Branded Side
Hall-Probe
d: Distance chip to upper side of IC
d : Distance chip to upper side of IC
PG-SSO-3-2 : 0.57 ±0.08 mm
d = 0.56 ±0.1 mm
AEA02510-1
Distance between chip and package: left: TLE4976-1K, right: TLE4976L
4.4
Package Marking
76L
Year (y) = 0...9
Month (m) = 1...9,
O - October
N - November
D - December
yww
76
06
ym
S
Figure 12
Year (y) = 0...9
Calendar Week (ww) = 01...52
AEA03641
Figure 13
Data Sheet
Marking of TLE4976-1K and TLE4976L
15
Rev. 2.0, 2009-02-12
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