iC-MA

ANGULAR HALL SENSOR / ENCODER

Rev B3, Page 1/18

FEATURES

o Quadruple hall sensor array for error-tolerant adjustment

o Non-sensitive to magnetic stray fields due to differential

measurement technique

o Interpolator with a resolution of up to 256 angle steps per cycle

o Rotational speeds up to 60.000 rpm

o 4 buffered I/O stages for signal outputs

o Three configuration inputs for operating mode selection

o Analog operation modes:

- sine/cosine signals controlled to 2 Vpp

- triange or sawtooth signal with selectable amplitude

o Digital operation modes:

- A/B quadrature signals with Z index pulse

- Counter pulses for external binary counters

o Cascading of multiple iC-MA possible for chain operation

o Error signal output for detection of low magnetic field strength

o Additional operating modes with reduced power consumption

o Standby modus when not enabled

o DFN10 package and bare die for flip chip mounting available

o Extended temperature range of -40...+125 °C

APPLICATIONS

o Analog and digital angle sensors

o Incremental angular encoders

o Magnetic multiturn encoders

o Potentiometer replacement

o Contactless rotary switch

o Commutation of brushless DC

motors

o Flow meter

PACKAGES

DFN10

4 x 4 mm²

Chip

2.74 x 1.94 mm²

BLOCK DIAGRAM

REFH

REFH

SIN

SIN

CONTROL

CONTROL

AMPLITUDE

AMPLITUDE

2

2

2

2

SIN +COS

SIN +COS

COS

COS

SIN

SIN

MODE

MODE

GAIN

GAIN

8 BIT

8 BIT

VREF

VREF

DIG/R

DIG/R

DIG

DIG

iC-MA

iC-MA

VDD

VDD

GAIN CONTROL

GAIN CONTROL

AMP

AMP

HALL SENSOR

HALL SENSOR

INTERFACE

INTERFACE

REFL

REFL

VDD

VDD

VDD

VDD

I/O

I/O

I/O

I/O

I/O

I/O

BIAS

BIAS

SELECT

SELECT

I/O

I/O

ERROR

ERROR

VPHI

VPHI

CFG2

CFG2

D

D

GND

GND

NEN

NEN

VDD

VDD

C

C

CFG1

CFG1

B

B

A

A

VDD

VDD

CFG3

CFG3

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