Redundant Analog TAS8240 Series of TMR Angle Sensors for Automotive Applications
TDK Corporation has expanded its tunnel-magnetoresistance (TMR) angle sensor product line with the TAS8240 sensor for automotive and industrial applications.
Available in both compact QFN16 (3 x 3 mm²) and TSSOP16 (5 x 6.4 mm²) packages, it offers four redundant analog single-ended SIN/COS outputs and low power consumption.
It creates precise angle measurements for better performance within small spaces. As a 360-degree angle sensor, the TAS8240 accurately measures the rotor position of BLDC motors used in safety-critical applications such as power steering, brake boosters, or traction motors.
The sensor contains four pairs of TMR half bridges and provides four separated SIN/COS outputs by applied magnetic field in the XY plane. Higher system safety levels up to ASIL D can be achieved while offering higher availability of position information, even in case of a failure of one of the output signals.
The QFN16 package, a surface mount technology (SMT) solution, provides a smaller footprint compared to TSSOP16, making it better for applications where space is limited. A wettable flank ensures that the soldering quality is suitable for automotive-grade tasks. Depending on system architectures, fail-operational concepts can also be supported by the new sensor.
TDK's TMR technology keeps the sensor angle accurate and stable through different temperatures and over the sensor's lifetime.
Features:
- Contactless 360-degree angle measurement
- High angle accuracy of ±1 degree in an ambient temperature range of -40 to 302°F (-40 to 150°C)
- 4x single-ended sin/cos output pairs
- ASIL D-ready
- Low power consumption
- Supports radial sensing concepts
- Optimized for automotive (AEC-Q100) and industrial applications
Price: Enquire with TDK's USA distributors here.
Applications/Industries:
- Absolute rotary angle sensor
- EPS motor-shaft angle sensor
- Steering wheel angle sensor
- E-brake motor angle sensor
- Resolver replacement for e-axle/traction motor
| Type | TAS8240-BAAA | TAS8240-HAAA |
| Package | TSSOP16 | QFN16 (Wettable Flank) |
| Package Dimensions (WxHxD) | 0.2 x 0.25 x 0.04 in. (5 x 6.4 x 1.1 mm) |
0.1 x 0.1 x 0.03 in. (3 x 3 x 0.75 mm) |
| Angle Accuracy | ±1 degrees or less (over temp.) ±0.3 degrees (TA= 25°C, typical) |
|
| Operating Temp. | -40 to 302°F (-40 up to 150°C) | |
| Analog Output | Single-ended, redundant, 1.5 Vp-p (at Vcc 5 V, ratiometric) |
|
| Bridge Resistance | 5 kΩ | - |
| Magnetic-Field Measuring Range | Nominal: 20 to 80 mT | - |
TDK Corporation of America
Lincolnshire, IL
(847) 699-2299
www.us.tdk.com
