MLX90277EGOSR0-0 MELEXIS [Melexis Microelectronic Systems], MLX90277EGOSR0-0 Datasheet

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MLX90277EGOSR0-0

Manufacturer Part Number
MLX90277EGOSR0-0
Description
Dual Programmable Linear Hall Effect Sensor
Manufacturer
MELEXIS [Melexis Microelectronic Systems]
Datasheet
Features and Benefits
Ordering Information
Part No.
MLX90277
Example: MLX90277EGO SR2-1
Figure 1-1 Functional Diagram
Vdd
Out
Vss (Ground)
Test
NC
Table 1: Pin out
3901090277
Rev 004
Please see section 10.4 for detailed information on the option codes.
1 Functional Diagram
Full Redundant Sensor
Analog Signal Processing
Quad Switched Hall Plate
Chopper Stabilized Amplifier
Linear Analog Ratiometric Output Voltage
Programmable Output Quiescent Voltage (V
-100%V
Programmable Magnetic Sensitivity
Programmable Low Pass Filter
Programmable Clamping Voltage
Programmable Temperature Compensation
Melexis ID Number
Programmable Customer ID Number
Lead-free package
14
6
DD
Supply
E E P R O M
Shift Register
OPA
…200%V
IC_A
1 - 4 - 7 - 8 - 11 - 13
TSSOP 14 pin out
12
14
3
OPA
3
2
DD
Temperature Code
E (-40° C to 85° C)
10
Range
Filter
IC_B
10
5
6
9
OPA
Program
decoder
12
2
Page 1 of 21
OQ
5
9
)
Dual Programmable Linear Hall Effect Sensor
Package Code
GO (TSSOP 14)
Application Examples
The
Ratiometric Linear Hall Effect sensor.
discrete CMOS ICs are mounted inside a single
package, electrically insulated, and independently
programmable. The MLX90277 is suitable for
applications requiring full redundancy. The linear
output voltages are proportional to the magnetic
flux density. The ratiometric output voltages are
proportional
MLX90277 possesses active error correction
circuitry, which virtually eliminates the offset errors
normally associated with analog Hall Effect
devices. All the parameters of the MLX90277
transfer characteristic are fully programmable.
The V
the slope polarity, the Output Clamping levels, the
thermal Sensitivity drift, the internal bias point and
a low-pass filter are all programmable in end-user
applications. The MLX90277 has a very stable
thermal compensation for both the Sensitivity and
the V
traceability purpose the MLX90277 will carry a
unique ID number programmed by Melexis and 24
bits of EEPROM memory are allocated for a user
programmed serial number.
2 General Description
Linear Position Sensing
Rotary Position Sensing
Current Sensing
Magnetic Field Measurement
OQ
OQ
MLX90277
(V
over a broad temperature range. For
OUT
to
@ B = 0 Gauss), the Sensitivity,
Option Code SR(IC_A, IC_B)
the
is
SRA-B, (A = 0, 1, 2, or 3)
MLX90277
a
supply
Dual
(B = 0, 1, 2, or 3)
voltages.
Programmable
Data Sheet
Nov/06
Two
The

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MLX90277EGOSR0-0 Summary of contents

Page 1

Features and Benefits Full Redundant Sensor Analog Signal Processing Quad Switched Hall Plate Chopper Stabilized Amplifier Linear Analog Ratiometric Output Voltage Programmable Output Quiescent Voltage (V -100%V …200%V Range DD DD Programmable Magnetic Sensitivity Programmable Low Pass Filter Programmable Clamping ...

Page 2

Table of Contents 1 Functional Diagram ........................................................................................................... 1 2 General Description .......................................................................................................... 1 3 Glossary of Terms............................................................................................................. 3 4 Maximum Ratings ............................................................................................................. 3 5 Detailed Block Diagram..................................................................................................... 4 5.1 Detailed Description .................................................................................................... 4 6 General Electrical Specifications....................................................................................... 5 7 Programming ...

Page 3

Note: All specifications apply to IC_A and IC_B unless otherwise noted. 3 Glossary of Terms mT (milli-Tesla) = Unit of measurement for magnetic flux density. 1mT is equal to 10 Gauss. V (Output Quiescent Voltage) = Output voltage at zero ...

Page 4

Detailed Block Diagram Figure 5-1 Detailed Block Diagram 5.1 Detailed Description Integrated on each individual IC within the MLX90277 is a temperature-compensated quad switched Hall plate, chopper stabilized amplifiers, adjustable output filter, output driver, voltage protection circuitry and a ...

Page 5

General Electrical Specifications DC operating parameters (unless otherwise specified) and for T DD range (E). Parameter Symbol Table 3: Electrical Specifications † The ratiometric output voltage is proportional to the supply voltage. When using the ...

Page 6

Programming Range T programming 20°C to 30° Parameter Symbol Table 4: Programming Range Specifications 8 Timing Specifications DC operating parameters (unless otherwise specified) and for T DD range (E). Parameter Symbol Table 5: ...

Page 7

Valid for Rough Gain within the specified option code. †† Life Time Drift (based on HTOL data [1000 hours @ 150° C]). ∆ Thermal Drift. ∆ For other test conditions, please contact the Melexis Sales ...

Page 8

Output Quiescent Voltage (V Two parameters, AGND and OFFSET, are used for adjustment of the V for coarse adjustment has a resolution of approximately 0.014V and a range of -100%V OQ 200%V . The OFFSET ...

Page 9

The MLX90277 sensors also have an additional stage, Fine Gain, for fine tuning the Sensitivity. The stage (parameter FG) follows the RG and provides a 10 bit adjustment. The small signal gain of the FG is within 1.0 and 2.5. ...

Page 10

Sensitivity VS Fine Gain for RG = 0..3 Fine Gain Sensitivity VS Fine Gain for RG = 8..11 Fine Gain Figures 10.4-1…10.4-4 Sensitivity versus RG and FG 3901090277 Rev 004 Dual Programmable Linear Hall Effect Sensor Sensitivity VS Fine Gain ...

Page 11

Sensitivity Polarity (INVERT) The slope transfer characteristic defines the Sensitivity. The INVERT parameter changes the Sensitivity's polarity, or the slope's direction. This allows the device to accommodate the application requirements and the magnet's polarity. The slope is inverted in ...

Page 12

Filter (FILTER) Each die of the MLX90277 includes two programmable low-pass filters located within the chopper amplifier stages. The two low-pass filters are controlled through a 4 bit parameter, FILTER. The FILTER value 0 corresponds to minimum filtering, maximum ...

Page 13

The value of TempCo is often determined by the magnet. In the application the TempCo is adjusted to compensate for the temperature coefficient of the magnet. To adjust the value the look up table is read from the device. The ...

Page 14

Output Amplifier Configuration (MODE) The output buffer can be configured to accommodate capacitive loads and improve the saturation voltage (output swing). The two bit parameter, MODE, sets the current capacity of the output amplifier. Melexis sets this parameter to ...

Page 15

Applications Information 12.1 Application Circuits The TEST pins are not used in applications. For EMC protection it is recommended to connect the TEST pins to Ground as close as possible to the device pins. The values for capacitors, C11, ...

Page 16

Programming the Sensor To program the individual MLX90277 sensors, connection to V placed into program mode by increasing the supply voltage to the V is clocked into the device through the output pin using the Melexis tri-level PTC protocol. ...

Page 17

Calibration Procedure The programmable features of the device allow calibrated within the application. This section gives general information for a two point calibration procedure. The two point calibration is the most common, however possible ...

Page 18

Standard information regarding manufacturability of Melexis products with different soldering processes Our products are classified and qualified regarding soldering technology, solderability and moisture sensitivity level according to following test methods: Reflow Soldering SMD’s (Surface Mount Devices) • IPC/JEDEC J-STD-020 ...

Page 19

Package Information The TSSOP14 package is lead-free and is released for MSL3/260°C. 15.1 Package Dimensions 0.65 TYP 1.0 DIA 1.0 1.0 4.90 5.10* 0.19 0.30*** NOTES: All dimensions are in millimeters (anlges in degrees). * Dimension does not include ...

Page 20

Pin-out and Marking 15.3 Hall Plate Positioning 0.641 0.741 14 Hall plate 1 MLX90277 1 3901090277 Rev 004 Dual Programmable Linear Hall Effect Sensor 0.641 0.741 8 0.003 0.103 0.240 0.360 Hall plate 2 0.003 0.103 7 Page 20 ...

Page 21

Disclaimer Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. Melexis makes no warranty, express, statutory, implied description regarding the information set forth herein or regarding the ...

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