iC-MQF
PROGRAMMABLE 12-BIT
preliminar y
Rev A1, Page 1/37
Sin/Cos INTERPOLATION IC WITH RS422 DRIVER
FEATURES
o
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o
o
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o
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o
Latency-free sine-to-digital conversion to 4000 angle steps
Input frequency: 200 kHz (x10), 20 kHz (x100), 2 kHz (x1000)
Flexible pin assignment due to signal path multiplexers
PGA inputs for differential and single-ended signals
Variable input resistance for current/voltage conversion
Signal conditioning for offset, amplitude and phase
Controlled 50 mA current source for LED or MR sensor supply
Fault-tolerant RS422 outputs with 50 mA sink/source drive
current
Preselectable minimum phase distance for spike-proof counter
stimulus
Zero signal conditioning and electronic index pulse generation
Signal and operation monitoring with configurable alarm
output, output shutdown and error storage
I
2
C multimaster interface for in-circuit calibration and
parameters (EEPROM)
Adjustable overtemperature alarm and shutdown
Supply from 4.3 to 5.5 V, operation from -25(-40) to +100 °C
Reverse-polarity-proof including the sub-system
APPLICATIONS
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Optical and magnetic position
sensors
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Linear scales
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High-resolution angle sensing
PACKAGES
TSSOP20
BLOCK DIAGRAM
VDDS
VDD
GNDS
iC-MQF
SERIAL I2C
INTERFACE
CONFIGURATION
REGISTER
SINE-TO-DIGTIAL
CONVERSION
PHI
REVERSE POLARITY
PROTECTION
GND
SCL
LineCount
Monitor
MONITORING
C
ERR
Tw
Toff
SDA
Sin/Cos
Monitor
PWRon
PGA INPUT
X1
I/V
SIGNAL PATH MUX
CALIBRATION
x
CH0
DIGITAL DRIVER
OUTPUT
PZ
X2
I/V
-
SIGNAL LEVEL
CONTROLLER
ZIN
NZ
x
x
CH2
X3
I/V
PB
X4
I/V
-
x
-
x
x
CH1
+
x
NB
+
ADJ
-
PA
X5
I/V
X6
I/U
x
x
NA
ACO
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ICHAUS [ IC-HAUS GMBH ]
