ALLEGRO CT813X Sensor Evaluation Board
DESCRIPTION
The CTD8103 evaluation board is designed to test the functionality of the CT813x sensor family. For more information on each sensor, refer to the CT8132 data sheet. The CT813x series of omnipolar tunnel magnetoresistance (TMR) digital switches are designed for consumer and industrial applications. The devices are based on Allegro patented XtremeSense™ TMR technology with integrated CMOS process to provide a monolithic solution for superior sensing performance. The CT813x digital switches offer stable magnetic operation over the operating temperature range. This product family has very low power consumption—as low as 110 nA—which is ideal for battery-operated products where minimal current consumption is required. The devices support magnetic fields down to 9 G for applications where there is a large air gap requirement.
FEATURES
- Sensitivity with BOP range: 9 to 70 G
- Ultra-low power consumption: ~110 nA @ VDD = 1.8 V and fS = 2 Hz
- Sensor polarity: omnipolar, bipolar, unipolar
EVALUATION BOARD CONTENTS
CTD8103 Evaluation Board
Table 1: CTD8103 Evaluation Board Configurations
General Specifications
USING THE EVALUATION BOARD
This section provides an overview of the connections and configuration options of the EVB8103 Evaluation Board evaluation board. Figure 2 highlights the proper configuration and is detailed below. The CT81xx and CT815x datasheets each contain detailed infor-mation on the use and functionality of each pin, as well as detailed specifications about the sensor, and should be consulted for more detailed information than is contained in this user guide.
Power Input and Board Configuration
First, turn the switch on to power on the board. Make sure the battery is in place. Once the switch is on, the sensors are responsive to magnetic fields and indicate their powered state by flashing the LEDs on the board. Holding a magnet to each sensor activates the cor-responding LED. For the unipolar sensor, a magnet held in front of the sensor turns on the LED, and removing the magnet turns off the LED. For the bipolar sensor, holding a magnet in front of the sensor or behind the sensor turns on the LED. For the omnipolar switch, holding a magnet in front of the sensor turns on the LED, and holding a magnet behind the sensor turns off the LED. This board is designed to test and compare the functionalities of each sensor.
SCHEMATIC
LAYOUT
BILL OF MATERIALS
Table 3: CTD8103 Evaluation Board Bill of Materials
Revision History
Copyright 2024, Allegro MicroSystems.
Allegro MicroSystems reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the information being relied upon is current.
Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.
The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems assumes no responsibility for its use; nor for any infringement of patents or other rights of third parties which may result from its use.
Copies of this document are considered uncontrolled documents.
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FAQ
- Q: Where can I find more detailed information about the sensor?
A: Detailed information about the sensor can be found in the CT81xx and CT815x datasheets. These documents contain comprehensive details on pin functionalities, specifications, and usage guidelines. - Q: What is the recommended operating temperature for the evaluation board?
A: The recommended operating temperature is specified in the general specifications section. Ensure that the board operates within this temperature range for optimal performance.
Documents / Resources
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ALLEGRO CT813X Sensor Evaluation Board [pdf] User Guide CT8132SK-IS3, CT8132BV-IL4, CT8132BL-HS3, CT813X Sensor Evaluation Board, CT813X, Sensor Evaluation Board, Evaluation Board |