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High-Performance Power ICs and Hall-Effect Sensors
Related Links:
Datasheets:
A3515 and A3516: Ratiometric Linear Hall-Effect Sensors for High-Temperature Operation (PDF)
Selection Guides:
Hall-Effect Sensors,
Linear Hall-Effect Sensors
Technical Publications:
Chopper-Stabilized Amplifiers With A Track-And-Hold Demodulator (PDF),
Linear Hall-Effect Applications Information (PDF),
Monolithic Magnetic Hall Sensors using Dynamic Quadrature Offset Cancellation (PDF),
Non-Intrusive Hall-Effect Current-Sensing Techniques Provide Safe, Reliable Detection and Protection for Power Electronics (PDF)
Press Releases:
High Precision Linear Hall-Effect Device for High-Temperature Operation
Design Support Tools:
A3515 and A3516 Calibrated Linear Product Evaluation Kits
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A3515 and A3516
Ratiometric Linear Hall-Effect Sensors for High-Temperature Operation
These parts are discontinued. Samples are no longer available. The A1321 and A1323 devices are intended to replace the A3515/7 and A3516/8 devices respectively. It is recommended that these new devices be considered for all new designs. If the A1321 or A1323 devices do not meet your application's requirements, please contact the local field applications engineer or sales support for alternatives.
Features
- Temperature-Stable Quiescent Output Voltage
- Precise Recoverability After Temperature Cycling
- Output Voltage Proportional to Applied Magnetic Field
- Ratiometric Rail-to-Rail Output
- Improved Sensitivity
- 4.5 V to 5.5 V Operation
- Immune to Mechanical Stress
- Small Package Size
- Solid-State Reliability
Description
The A3515- and A3516- are sensitive, temperature-stable linear Hall-effect sensors with greatly improved offset characteristics. Ratiometric, linear Hall-effect sensors provide a voltage output that is proportional to the applied magnetic field and have a quiescent output voltage that is approximately 50% of the supply voltage. These magnetic sensors are ideal for use in linear and rotary position sensing systems in the harsh environments of automotive and industrial applications over extended temperatures to -40°C and +150°C. The A3515- features an output sensitivity of 5 mV/G, while the A3516- has an output sensitivity of 2.5 mV/G. See the Magnetic Characteristics table for complete, individual device parametrics.
Each BiCMOS monolithic circuit integrates a Hall element, improved temperature-compensating circuitry to reduce the intrinsic sensitivity drift of the Hall element, a small-signal high-gain amplifier, and a rail-to-rail low-impedance output stage.
A proprietary dynamic offset cancelation technique, with an internal high-frequency clock, reduces the residual offset voltage, which is normally caused by device overmolding, temperature dependancies, and thermal stress. This technique produces devices that have an extremely stable quiescent output voltage, are immune to mechanical stress, and have precise recover-ability after temperature cycling. Many problems normally associated with low-level analog signals are minimized by having the Hall element and amplifier in a single chip. Output precision is obtained by internal gain and offset trim adjustments during the manufacturing process.
Functional Block Diagram
| Part Number | Package Type | RoHS Compliant |
Part Composition/ RoHS Data |
Temperature | Comments | Samples | Distributor Stock |
|---|---|---|---|---|---|---|---|
| A3515XUA-CALIB | DEMO BOARD | No | -- | -20 °C to 85 °C | discontinued | A3515 and A3516 Calibrated Linear Product Evaluation Kits | |
| A3515EUA | 3-pin SIP | No | view data | -40 °C to 85 °C | discontinued on April 25, 2008; refer to A132x family. discontinued |
Contact Local Sales Representative or check distributor stock |
|
| A3515LUA | 3-pin SIP | No | view data | -40 °C to 150 °C | discontinued on April 25, 2008; refer to A132x family. discontinued |
Contact Local Sales Representative or check distributor stock |
|
| A3516XUA-CALIB | DEMO BOARD | No | -- | -20 °C to 85 °C | discontinued | A3515 and A3516 Calibrated Linear Product Evaluation Kits | |
| A3516EUA | 3-pin SIP | No | view data | -40 °C to 85 °C | discontinued on April 25, 2008; refer to A132x family. discontinued |
Contact Local Sales Representative or check distributor stock |
|
| A3516LUA | 3-pin SIP | No | view data | -40 °C to 150 °C | discontinued on April 25, 2008; refer to A132x family. discontinued |
Contact Local Sales Representative or check distributor stock |
Allegro's products are not to be used in life support devices or systems, if a failure of an Allegro product 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.