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 (V
OQ
)
-100%V
DD
…200%V
DD
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.
MLX90277
Temperature Code
E (-40° to 85°
C
C)
Package Code
GO (TSSOP 14)
Option Code SR(IC_A, IC_B)
SRA-B, (A = 0, 1, 2, or 3)
(B = 0, 1, 2, or 3)
†
Example:
MLX90277EGO SR2-1
†
Please see section 10.4 for detailed information on the option codes.
1 Functional Diagram
Supply
3
10
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 V
OQ
(V
OUT
@ 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 V
OQ
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.
OPA
OPA
Filter
OPA
12
5
14
6
2
9
Program
decoder
DAC
DAC
DAC
DAC
DAC
Shift Register
E E P R O M
Figure 1-1 Functional Diagram
TSSOP 14 pin out
IC_A
IC_B
3
10
12
5
14
6
2
9
1 - 4 - 7 - 8 - 11 - 13
Vdd
Out
Vss (Ground)
Test
NC
Table 1: Pin out
3901090277
Rev 004
DAC
Page 1 of 21
Data Sheet
Nov/06
MELEXIS [ Melexis Microelectronic Systems ]
