MLX90251 Datasheet, PDF (1/22 Pages) Melexis Microelectronic Systems – Programmable Linear Hall Effect Sensor

MLX90251
Programmable Linear Hall Effect Sensor
Features and Benefits
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.
Temperature Code
MLX90251
E (-40°C to 85°C)
L (-40°C to 150°C)
MLX90251
E (-40°C to 85°C)
Package^† Code
VA (4 Lead SIP)
GO (TSSOP14)
Option Code^††
0, 1, 2, 3
0, 1, 2, 3
Example:
MLX90251LVA-2
MLX90251EGO-2
† _{Both package types (VA and GO) are lead-free (see section 15).}
†† _{Please see section 10.4 for detailed information on the option code.}
1 Functional Diagram
Supply
1
OPA
Filter
OPA
OPA
4
3
Shift Register
2
Program
decoder
EEPROM
Figure 1-1 Functional Diagram
V_DD
Test
V_SS (Ground)
V_OUT
NC
Table 1: Pin out
Pin Out
VA
GO
1
2
2
3
3
5
4
6
1, 4, 7, 8-14
2 General Description
The MLX90251 is a CMOS Programmable,
Ratiometric Linear Hall Effect sensor IC. The
linear output voltage is proportional to the
magnetic flux density. The ratiometric output
voltage is proportional to the supply voltage. The
MLX90251 possesses active error correction
circuitry, which virtually eliminates the offset errors
normally associated with analog Hall Effect
devices. All the parameters of the MLX90251
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 MLX90251 has a very stable
thermal compensation for both the Sensitivity and
the V_OQ over a broad temperature range. For
traceability purpose the MLX90251 will carry a
unique ID number programmed by Melexis and 24
bits of EEPROM memory are allocated for a user
programmed serial number.
3901090251
Rev 009
Page 1 of 22
Data Sheet
Nov/06