EQ0321 AKM | Alldatasheet
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[EQ0321] MS1436;E;00 2013/04 ; 1 ; 1. Genaral Description The EQ0321 is a programmable linear Hall IC which has two Hall elements and a processing circuit. The output of the EQ0321 is an analog voltage and proportional with the displacement of the magnet that placed above the EQ0321. The EQ0321 is suitable for precise position sensing to optical image stabilization, auto focus, zoom lenses of digital steel camera. 2. Fea tures □ Sensing stroke ; 1~3mm □ Accuracy ; 0.1 % of sensing stroke (Ideal) □ 4;line SPI interface □ Consumption current Power down mode ; 5 µA (Max.) Active mode ; 5.5 mA (Typ.), 7.5 mA (Max.) □ Power supply ; 2.7 ~ 5.5 V □ Package size ; 10 pin, SON (2.9×3.2×0.6 .mm) □ Operating Temperature ; ;30°C ~ 85°C □ Compensating the temperature characteristic of the magnet and Hall elements. Programmable linear Hall IC for 1 axis EQ0321
[EQ0321] MS1436;E;00 2013/04 ; 2 ; 3. Table of Contents
- Block Diagram and Functions
4.1 Block Diagram
Figure 1. Block diagram of the EQ0321
4.2 Block Function
Table 1. Explanation of circuit block HE DRIVE It supplies the driving voltage to Hall el ements. VOLTAGE REFERENCE It generates reference voltage.
- Pin Configurations and Functions
5.1 Pin Configurations
Figure 2. Bump down view
5.2 Pin Function
Table 2. Pin configurations and functions of the EQ0321 1 RSTN D I When the input signal is “Low”, the power down mode is active. Please make the input “Low” before power on. 2 CSN D I The chip select pin for serial interface. 3 SCK D I The clock input pin for serial interface. 4 SI D I The data input pin for serial interface. 5 SO D O The data output pin for serial interface.
6 VOUT A O This pin outputs the voltage which is pr oportional to the position
Maximum capacity load = 20pF. Minimum resistance load = 100k Ω. 7 TSTO A O This is a test pin. This pin should be connected to V SS. 8 VCOM A O This pin outputs the internal reference voltage (VDD /2). Please connect 0.01µF to ground.
9 VSS GND － Ground
10 VDD PWR － Power supply
(Note 2) I(input pin), O(output pin).
are not guaranteed in such exceeding conditions. Table 3. Absolute Maximum Ratings Ta = 25 oC, unless otherwise specified.
- Recommended Operating Conditions
Table 4. Recommended operating conditions (Note 1) Magnetic Flux Density (M.F.D.) applied into one Hall element. (Note 2) B1, B2 = the applied magnetic flux density of each Hall elements of the EQ0321.
- Electrical Characteristics
8.1 Analog Electrical Characteristics
Table 5. Analog Electrical Characteristics VDD = 2.7 ~ 5.5 V, Ta = 25 oC, GAIN = 2.4 and OFFSET=0mV, unless otherwise specified.
8.2 Digital DC Specification
Table 6. Digital DC Specification VDD = 2.7 ~ 5.5 V, Ta = ;30 ~ 85 oC, unless otherwise specified.
8.3 Digital AC Specification
Table 7. Digital AC Specification VDD = 2.7 ~ 5.5 V, Ta = ;30 ~ 85 oC, Load capacitance = 30 pF, unless otherwise specified. (Note 1) These parameters are not tested in mass production.
8.4 Synchronous Data Timing
Figure 5. Instruction Input Figure 6. Data Output (READ) Figure 7. Data Output (READ) at end of command
Figure 8. Data Input (WRITE)
- Non -volatile Memory Characteri stics
Table 8. Non-volatile Memory Characteristics VDD = 2.7 ~ 5.5 V, Ta = ;30 ~ 85 oC, unless otherwise specified.
10.1 Positional relation of the magnet and the EQ0321
The EQ0321 and a magnet should be placed as Figure 9. Figure 9. Positional relation of magnet and the EQ0321 Figure 10. The output voltage with magnet position
10.2 Output voltage, Gain, Offset
which operated Magnetic Flux Density (= M.F.D.) applied on each Hall element.
B1and B2 are the applied magnetic flux density of each Hall elements of the EQ0321. GAIN and OFFSET are defined in Section 10.4 and 10.5. These are adjustable.
10.3 Serial interface
data are entered with a time when SCK rises, and outputted with a time when SCK falls. Table 9. Command Table Table 10. Memory Map (Note)Writing to address other than “00h” ~ “01h” is inhibited. Figure 11. WREN command
10.4 Gain Adjustment Function (Memory Name: GAIN)
factory default setting value of gain is 2.4. Table 11. GAIN Table
10.5 Offset Adjustment Function (Memory Name: OFFSET)
factory default setting value of DC level is 0mV. Table 12. OFFSET Table
11.1 Circuit example
Figure 15. Recommended circuit
12.1 Outline Dimensions and Pad Dimensions
Figure 16. Dimensional drawing of the EQ0321 (Note 1) The center of the sensor is located within the φ0.2mm circle. (Note 2) Sensor plate is located in 0.26mm depth from the package surface. (Note 4) There is no plating on cut surface of the terminals.
12.2 Recommended Land Pattern
Figure 17. Recommended land pattern
12.3 Marking
Figure 18. Marking of the EQ0321 Table 13. Marking information
1 EQ0321 0 2020 C January
13.1 Carrier Tape
Products are supplied in the reeled tape which contains 3,000 units per reel. Figure 19. Dimensional drawing of carrier tape
13.2 Reel Dimensions
Figure 20. Dimensional drawing of reel
14.1 Soldering Conditions
Reflow soldering should be performed under the following conditions. Figure 21. Reflow profile
[EQ0321] MS1436;E;00 2013/04 ; 20 ; IMPORTANT NOTICE 0. Asahi Kasei Microdevices Corporation (“AKM”) reserves the right to make changes to the information contained in this document without notice. When you consider any use or application of AKM product stipulated in this document (“Product”), please make inquiries the sales office of AKM or authorized distributors as to current status of the Products. 1. All information included in this document are provided only to illustrate the operation and application examples of AKM Products. AKM neither makes warranties or representations with respect to the accuracy or completeness of the information contained in this document nor grants any license to any intellectual property rights or any other rights of AKM or any third party with respect to the information in this document. You are fully responsible for use of such information contained in this document in your product design or applications. AKM ASSUMES NO LIABILITY FOR ANY LOSSES INCURRED BY YOU OR THIRD PARTIES ARISING FROM THE USE OF SUCH INFORMATION IN YOUR PRODUCT DESIGN OR APPLICATIONS. 2. The Product is neither intended nor warranted for use in equipment or systems that require extraordinarily high levels of quality and/or reliability and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage or serious public impact, including but not limited to, equipment used in nuclear facilities, equipment used in the aerospace industry, medical equipment, equipment used for automobiles, trains, ships and other transportation, traffic signaling equipment, equipment used to control combustions or explosions, safety devices, elevators and escalators, devices related to electric power, and equipment used in finance;related fields. Do not use Product for the above use unless specifically agreed by AKM in writing. 3. Though AKM works continually to improve the Product’s quality and reliability, you are responsible for complying with safety standards and for providing adequate designs and safeguards for your hardware, software and systems which minimize risk and avoid situations in which a malfunction or failure of the Product could cause loss of human life, bodily injury or damage to property, including data loss or corruption. 4. Do not use or otherwise make available the Product or related technology or any information contained in this document for any military purposes, including without limitation, for the design, development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapons or missile technology products (mass destruction weapons). When exporting the Products or related technology or any information contained in this document, you should comply with the applicable export control laws and regulations and follow the procedures required by such laws and regulations. The Products and related technology may not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any applicable domestic or foreign laws or regulations. 5. Please contact AKM sales representative for details as to environmental matters such as the RoHS compatibility of the Product. Please use the Product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the EU RoHS Directive. AKM assumes no liability for damages or losses occurring as a result of noncompliance with applicable laws and regulations. 6. Resale of the Product with provisions different from the statement and/or technical features set forth in this document shall immediately void any warranty granted by AKM for the Product and shall not create or extend in any manner whatsoever, any liability of AKM. 7. This document may not be reproduced or duplicated, in any form, in whole or in part, without prior written consent of AKM.