ADMT4000

RECOMMENDED FOR NEW DESIGNS

True Power-On Multiturn Sensor

Data Sheet (Rev. A) Product Selection Table
Part Models
2
1ku List Price
Starting From $9.50
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Part Details

  • True Power-On multiturn counter
  • 46-turn magnetic sensor
  • >16k° digital output
  • ±0.25° accuracy
  • Measurement update rate 100 kSPS
  • 16 mT to 31 mT operating range
  • Internal temperature sensor
  • IC supply, 3.3 V
  • SPI interface, 1.8 V to 5 V
  • Junction temperature range: -40°C to +150°C
  • 24-pin TSSOP
  • Industrial applications
ADMT4000
True Power-On Multiturn Sensor
ADMT4000 Functional Block Diagram ADMT4000 Pin Configuration
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Documentation

Data Sheet 1

User Guide 2

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Software Resources

Evaluation Software 1

Hardware Ecosystem

Parts Product Life Cycle Description
Internal Power Switch Boost Regulators 1
LT3461A
PRODUCTION 3MHz Step-Up DC/DC Converters with Integrated Schottky in ThinSOT
LCD/CCD/OLED Bias 1
LT3467
PRODUCTION 1.1A Step-Up DC/DC Converter with Integrated Soft-Start
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Evaluation Kits

eval board
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EVAL-ADMT4000

Evaluating the ADMT4000 Zero Power Multiturn Sensor

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Features and Benefits

Product Details

The ADMT4000 is a magnetic turn, counter sensor capable of recording turns of an external magnetic field with zero power. The absolute position, including the number of turns, is reported via a serial peripheral interface (SPI). The EVAL-ADMT4000SD1Z evaluation board allows for the evaluation of the ADMT4000 zero power, multiturn sensor by providing a flexible hardware platform with accompanying graphical user interface (GUI). The EVAL-ADMT4000SD1Z features the ADMT4000 in an end of shaft magnet configuration, Figure 1. The evaluation kit is composed of an EVAL-ADMT4000SD1Z and a magnetic stimulus on a printed circuit board (PCB) mount. To operate with the provided GUI, the EVAL-SDP-CS1Z (SDP-S) or EVAL-SDP-CB1Z (SDP-B) is required, interchangeably referred to as the SDP controller board within this user guide.

The EVAL-ADMT4000SD1Z allows a detailed evaluation of the ADMT4000. The GUI demonstrates turn count, angular measurement, diagnostic measurements, system-level calibration, and device configuration. The EVAL-ADMT4000SD1Z is fitted with a coil to enable magnetic reset of the turn-count sensor. Time stamped captured data can be logged to a technical data management streaming (TDMS) file. The TDMS file format allows large data sets to be stored and indexed. Data logs contain the device settings in addition to time stamped data and fault status. The calibration function allows the user to store the detailed results of the calibration using data captured using the GUI or data captured using the measurement system of the user.

The EVAL-ADMT4000SD1Z also provides 2.54 mm headers for power and digital signals that allow the user to evaluate the EVALADMT4000SD1Z with an external microcontroller platform and start the system software development. The PCB is designed so that the sensor board can be broken off of the SDP interface section to provide a smaller form factor. Power supplies can be sourced from either the USB port via the SDP controller board, or an external bench supply.

For full details of the EVAL-ADMT4000SD1Z, see the ADMT4000 data sheet, which must be consulted in conjunction with this user guide, when using the EVAL-ADMT4000SD1Z evaluation board.
EVAL-ADMT4000
Evaluating the ADMT4000 Zero Power Multiturn Sensor
EV-ADMT4000SDZ Evaluation Board EV-ADMT4000SDZ Evaluation Board - Top View EV-ADMT4000SDZ Evaluation Board - Bottom View

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