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MLX90277

Dual Programmable Linear Hall Effect Sensor

Melexis Microelectronic Systems  

MLX90277

Dual Programmable Linear Hall Effect Sensor

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 (VOQ)

-100%VDD…200%VDD Range

Programmable Magnetic Sensitivity

Programmable Low Pass Filter

Programmable Clamping Voltage

Programmable Temperature Compensation

Melexis ID Number

Programmable Customer ID Number

Lead-free package

Application Examples

Linear Position Sensing

Rotary Position Sensing

Current Sensing

Magnetic Field Measurement

Ordering Information

Part No.

Temperature Code

MLX90277

E (-40°C to 85°C)

Package Code

GO (TSSOP 14)

Example: MLX90277EGO SR2-1

†Please see section 10.4 for detailed information on the option codes.

Option Code SR(IC_A, IC_B)†

SRA-B, (A = 0, 1, 2, or 3)

(B = 0, 1, 2, or 3)

1 Functional Diagram

Supply

3 10

OPA

Filter

OPA

OPA

12 5

14 6

Shift Register

29

Program

decoder

EEPROM

Figure 1-1 Functional Diagram

Vdd

Out

Vss (Ground)

Test

NC

Table 1: Pin out

TSSOP 14 pin out

IC_A

IC_B

3

10

12

5

14

6

2

9

1 - 4 - 7 - 8 - 11 - 13

2 General Description

The MLX90277 is a Dual Programmable

Ratiometric Linear Hall Effect sensor. Two

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 to the supply voltages. The

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 VOQ (VOUT @ B = 0 Gauss), the Sensitivity,

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 VOQ over a broad temperature range. For

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.

3901090277

Rev 004

Page 1 of 21

Data Sheet

Nov/06

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