Data Sheet
Table Of Contents
- 1 FH3D02 Overview
- 2 Characteristics
- 3 Package and Circuit Connection
- 4 SPI Communication
- 5 List of Registers
- 5.1 Measurement Register Contents
- 5.1.1 0x000B (read/write) – Measurement Control
- 5.1.2 0x000E (read/write) – Measurement Start
- 5.1.3 0x0107 (read only) – Status Register
- 5.1.4 0x0110 (read only) – Temperature Sensor
- 5.1.5 0x0111 (read only) – Bi0 Magnetic Field
- 5.1.6 0x0112 (read only) – Bi1 Magnetic Field
- 5.1.7 0x0113 (read only) – Bj0 Magnetic Field
- 5.1.8 0x0114 (read only) – Bj1 Magnetic Field
- 5.1.9 0x0120 (read only) – Magnetic Field Magnitude
- 5.1.10 0x0121 (read only) – Magnetic Field Angle
- 5.1.11 0x0122 (read only) – Linearized Angle / Bz1 Field (Special Function Mode)
- 5.1.12 0x0124 (read only) – Bz0 Magnetic Field (Special Function Mode)
- 5.2 Result Register Overview
- 5.1 Measurement Register Contents
- 6 Measurement Modes
- 6.1 Single Magnetic Probe
- 6.2 Dual Magnetic Probe
- 6.3 Linear Position or Off-Axis Angle Sensor (Absolute Field Values, Magnet On-Top)
- 6.4 Linear Position or Off-Axis Angle Sensor (Gradient Field Values, Magnet On-Top)
- 6.5 Linear Position or Off-Axis Angle Sensor (Absolute Field Values, Magnet At-The-Side)
- 6.6 Linear Position or Off-Axis Angle Sensor (Gradient Field Values, Magnet At-The-Side)
- 7 Additional Features
- 8 LZE GmbH
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List of Registers
5.1.7
0x0113 (read only) – Bj
0
Magnetic Field
Depending on the table selection (Bits TableSelect in register 0x000B) the Bj
0
output register can hold
different magnetic field components. For an overview of the Bj
0
contents refer to chapter 5.2.
Bit
Symbol
Description
D15 (MSB)
–
D0 (LSB)
Bj0
“Bj
0
”
Output value of magnetic field sensor. 16 bit signed integer
value in two’s complement representation.
For explanation of the real magnetic direction refer to
chapter
5.2. Conversion (typical): Bj
0
[µT] = Bj
0
[LSB] * 4 [µT/LSB]
0x0113 Bits
5.1.8
0x0114 (read only) – Bj
1
Magnetic Field
Depending on the table selection (Bits TableSelect in register 0x000B) the Bj
1
output register can hold
different magnetic field components. For an overview of the Bj
1
contents refer to chapter 5.2.
Bit
Symbol
Description
D15 (MSB)
–
D0 (LSB)
Bj1
“Bj
1
”
Output value of magnetic field sensor. 16 bit signed integer
value in two’s complement representation.
For explanation of the real magnetic direction refer to
chapter
5.2. Conversion (typical): Bj
1
[µT] = Bj
1
[LSB] * 4 [µT/LSB]
0x0114 Bits
5.1.9
0x0120 (read only) – Magnetic Field Magnitude
A CORDIC algorithm calculates magnitude and angle of the Bi and Bj field components. The magnitude is
available in register 0x0120. Please note that the representation is unsigned integer and a certain factor
has to be taken into account for the conversion.
In gradient mode the Bi and Bj differences are used as CORDIC input (see conversion formulas in the
table).
Bit
Symbol
Description
D15 (MSB)
–
D0 (LSB)
Bmag
“
: Magnitude of
”
CORDIC magnitude of Bi and Bj
. 16 bit unsigned integer value.
Calculation:
(absolute mode):
= 0.8234
+
(gradient mode):
= 0.8234
(
)
+
(
)
0x0120 Bits