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
o
o
o
o
o
Analog and digital angle sensors
Incremental angular encoders
Magnetic multiturn encoders
Potentiometer replacement
Contactless rotary switch
Commutation of brushless DC
motors
o
Flow meter
PACKAGES
DFN10
4 x 4 mm²
Chip
2.74 x 1.94 mm²
BLOCK DIAGRAM
VDD
VDD
CFG1
SIN
SIN
I/O
DIG
8 BIT
AMP
I/O
A
VDD
COS
CFG2
HALL SENSOR
GAIN
VDD
B
CFG3
SIN +COS
GAIN CONTROL
2
2
iC-MA
REFH
VPHI
C
I/O
D
NEN
VDD
I/O
VREF
MODE
SELECT
BIAS
AMPLITUDE
ERROR
CONTROL
GND
DIG/R
REFL
INTERFACE
Copyright © 2009 iC-Haus
ICHAUS [ IC-HAUS GMBH ]
