TAB4140-BAAB [TDK]
TMR角度传感器;
| 型号： | TAB4140-BAAB |
| 厂家： | 
TDK ELECTRONICS |
| 描述： | TMR角度传感器 传感器 |
| 文件： | 总7页 (文件大小：1756K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PRODUCT CATALOG
Oct/2020
TAA/TAB Series
High-Precision TMR Angle Sensors with Amplified
Analog Output
Based on the Tunnel Magneto-Resistive (TMR) effect, the TAA/TAB series comprises highly sen-
sitive analog sensors. They are able to measure angles up to 360° with high accuracy and stabil-
ity in a wide range of temperature and magnetic-field variations.
TAB4140 and TAA6140 are pure TMR bridge angle sensors providing redundant SIN/COS
outputs. They also include an output amplification, well suited for remote applications.
In combination with a microcontroller and a small piece of software, these sensors offer
outstanding angular measurement performance in industrial and safety-critical automotive
applications.
1
PRODUCT CATALOG
Oct/2020
TMR Basic Principles
Tunnel Magneto-Resistance (TMR) sensors exploit the barrier layer, whereas the resistance depends on
a special form of the Magneto-Resistive (MR) effect the degree of magnetization of the free layer and its
based on quantum-mechanical processes. The MR orientation with respect to the pinned layer: When
effect appears when the change of a magnetic field both free and pinned layer magnetization orienta-
applied to a conductive material leads to a change in tions point in the same direction, the resistance is
its electrical resistance, thus transducing a magnetic minimal, while opposite magnetization directions
stimulation into an electrical response.
evoke maximum resistance. A TMR sensor is com-
posed of a number of individual TMR elements
forming the four branches of a Wheatstone bridge,
where the fixed layers of the elements within each
branch are identically aligned.
In a TMR element, a stack of magnetic material is sep-
arated by an electrical insulator – the so-called tunnel
barrier – into two overlapping layers (see Fig. 1–1).
One of these magnetic layers (the “pinned” layer) is
processed to show a well aligned in-plane magne- Applying a rotating magnetic field in the plane
tization that is invariant when exposed to external of the Wheatstone bridge allows to tap periodic
magnetic fields. In contrast, the magnetization of voltage signals from the two bridges that are phase-
the other magnetic layer (the “free” layer) is flexible shifted by 90° (see Fig. 1–2). These four signals
and can be modified by applying external magnetic finally allow to unambiguously extract the orienta-
fields. Applying a voltage between the two magnetic tion of the stimulating field, i.e., the angular position
layers causes a current flowing (tunneling) through of the rotating permanent magnet.
B
N
TMR element
α
S
Free Layer
Barrier Layer
Pinned Layer
Current flow
direction
Fig. 1–1: TMR element
Fig. 1–2: Wheatstone bridge structure of TAS214x
GeneralTMR Features
◆ High output at 1.5 Vpp / 3.0 Vpp @ 5 V
◆ Low temperature drifts
(Analog output sensorTAS2141 /TAS2143)
◆ Low power consumption
◆ Good angular accuracy of 0.6 deg. (1.5 Vpp differential
output @ 5 V), 0.ꢀ deg. (3.0 Vpp differential output @ 5 V)
(Analog output sensorTAS2141 /TAS2143)
◆ Detections can be made from 0 to 360°
n=5pc
1.0
0.8
0.6
0.4
0.2
0.0
1.0
0.8
0.6
TMR
0.4
0.2
AMR
0.0
–0.2
–0.4
–0.6
–0.8
–1.0
GMR
150°C
-40°C
25°C
0
90
180
(
270
360
10
20
30
40
50
60
)
70
80
90
)
Angle deg
(
Magnetic Field mT
20 times the AMR element, 6 times the GMR element, 500 times the Hall element
Fig. 2–1: Output wave pattern comparison TAS2141-AAAB
(1.5 Vpp differential output)
Fig. 2–2: Angle error graph TAS2141-AAAB
(1.5 Vpp differential output)
2
PRODUCT CATALOG
Oct/2020
TAB4140-BAAB
Fourfold Full-Bridge TMR Angle Sensors
with Single-Ended Amplifier/Differential Output
Benefits
Application Examples
◆ Sensor operation with harness can be supported
TAB4140-BAAB is the optimal system solution for
applications, such as:
◆ Fast response, high angular accuracy suitable for fast and
accurate motor control applications
◆ EPS motor-shaft angle sensor
◆ Steering Wheel Angle Sensor
◆ Pedal Position Sensor
◆ Very stable position measurement (over temperature and
lifetime) – no need for re-calibration
◆ Integrated amplifier reduces BOM and application cost
◆ Completely independent between sensor1 and sensor2
◆ Throttle Position Sensor
Features
◆ RedundantTMR-Sensors with integrated amplifiers for
safety critical applications
◆ Single-ended Amplifier/Differential output
(Sin+/Sin-/Cos+/Cos-)
◆ High reliability and low FIT rates allow operation in
safety-critical applications
◆ In combination with simple algorithms running in micro-
controllers, the remaining very low angular errors can
be compensated and allows to be operated in the entire
magnetic-field range without any changes in angular
precision.
Physical Characteristics
◆ Supply voltage range: 3 V to 5.5 V
◆ Current consumption: 9.0 mA at 5 V (typical value)
◆ Wide temperature range: −40 °C to +150 °C
◆ Wide magnetic field range:
– 20 mT to ꢀ0 mT (standard range)
– ꢀ0 mT to 120 mT (extended range)
◆ Angle accuracy: 0.6 deg. at standard range
◆ TSSOP16 package
◆ AEC-Q100 qualified
3
PRODUCT CATALOG
Oct/2020
TAA6140-BAAA
Sixfold Full-Bridge Angle Sensor
with Differential Amplifier/Single-ended Output
Benefits
Application Examples
◆ Sensor signals prepared for simple read-out by ADC
TAA6140 is the optimal system solution for safety-critical
applications, such as:
◆ Fast response, high angular accuracy suitable for fast
and accurate motor control applications
◆ Absolute Rotary Angle Sensor
◆ EPS Motor-shaft Angle Sensor
◆ Steering Wheel Angle Sensor
◆ Pedal Position Sensor
◆ Very stable position measurement (over temperature
and lifetime) – no need for re-calibration
◆ Integrated amplifier reduces BOM and application cost
◆ Sensor is optimized for safety-critical applications
◆ Throttle Position Sensor
Features
◆ Three independent TMR sensors with integrated
amplifiers provide high redundancy
◆ Differential Amplifier/Single-ended output (Sin/Cos)
◆ High reliability and low FIT rates allow operation in
safety-critical applications
◆ In combination with simple algorithms running in
microcontrollers, the remaining very low angular drift
over temperature can be compensated and allows to be
operated in the entire magnetic-field range without any
changes in angular precision.
Physical Characteristics
◆ Recommended supply voltage range: 4.5 V to 5.5 V
◆ Current consumption: 17.3 mA at 5 V (maximum value)
◆ Wide temperature range: −40 °C to +150 °C
◆ Wide magnetic-field range:
– 20 mT to ꢀ0 mT (standard range)
– ꢀ0 mT to 120 mT (extended range)
– higher magnetic fields with restrictions
◆ Angle accuracy: 0.ꢀ deg. at standard range
◆ TSSOP16 package
◆ AEC-Q100 qualified
4
PRODUCT CATALOG
Oct/2020
TAA/TAB
Internal Circuitry
AMP
AMP
Sin1+
Sin1-
Sin2+
AMP
AMP
Cos1+
Sin2-
Cos1-
Cos2+
AMP
Cos2-
Fig. 3: Internal circuitry of TAB4140 (two dies)
Sin1
Diff
AMP
Sin2
Sin3
Cos1
Diff
AMP
Cos2
Cos3
Fig. 4: Internal circuitry of TAA6140 (three dies)
Sin
Cos
Direction of pinned layer magnetization
5
PRODUCT CATALOG
Oct/2020
TAA/TAB series
Part Number Construction
T
A
A
6
1
4
0
– B
A
A
A
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(1) Sensor technology
TMR
(ꢀ) Sensor package
B
T
TSSOP16
Automotive
None
(2) Typical application
(9) Grade
A
A
Angle
(3) Sensor type
A/B
(10) Specials
A
AMP Differential
(4) Bridge/System
(11) Product internal code
2
4
6
2
4
6
A
B
1
2
(5) Bridge type
1
Full bridge
XY
(6) Sensing axis
4
(7) Internal code
0
1
2
3
0
1
2
3
Product Lineup
Sensor
technology application
Typical
Sensor Bridge/ Bridge Sensor Internal Sensor
Product
Internal code
Product Name
TAB4140-BAAB
TAA6140-BAAA
Output @5V
Grade
Specials
type
System
type
axes
code
package
3.0VPP (Support
redundant system)
4
0
TSSOP16
Ampli-
fied
1 forTAA6140
2 forTAB4140
Full
bridge
TMR
Angle
XY
Automotive none
3.0VPP (Support
redundant system)
6
0
TSSOP16
6
PRODUCT CATALOG
Oct/2020
Dimension, Packaging Information
TSSOP16
ꢀ065
5
ꢀ0.
Fig. 6: TSSOP16 package
1 7. 4 1.0
13.4 1.0
Side view
MUL: 3000 pcs/reel (TAB4140/TAA6140)
Fig. 7: Reel specifications (TSSOP16 package)
(4.2)
0.05
0.1
Ø
0.10
0.1
0.1
4
Ø
1.55
6.95
2
1.6
0.1
1.2
1.9
0.1
8
Fig. 8: Carrier tape specifications (TSSOP16 package)
Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.
Please note that the contents may change without any prior notice due to reasons such as upgrading.
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