iC-MQ
PROGRAMMABLE 9-BIT
Sin/Cos INTERPOLATION IC WITH RS422 DRIVER
Rev D4, Page 1/39
FEATURES
o
Latency-free sine-to-digital conversion to 400 angle steps
o
500 kHz input frequency for interpolation factors of x1 and x2
(10 kHz for x100)
o
Flexible pin assignment due to signal path multiplexers
o
PGA inputs for differential and single-ended signals
o
Variable input resistance for current/voltage conversion
o
Signal conditioning for offset, amplitude and phase
o
Controlled 50 mA current source for LED or MR sensor supply
o
Fault-tolerant RS422 outputs with 50 mA sink/source drive
current
o
Preselectable minimum phase distance for spike-proof counter
stimulus
o
Zero signal conditioning and electronic index pulse generation
o
Signal and operation monitoring with configurable alarm
output, output shutdown and error storage
o
I
2
C multimaster interface for in-circuit calibration and
parameters (EEPROM)
o
Adjustable overtemperature alarm and shutdown
o
Supply from 4.3 to 5.5 V, operation from -25(-40) to +100 °C
o
Reverse polarity proof including the sub-system
APPLICATIONS
o
Optical and magnetic position
sensors
o
Angle encoders
o
Linear scales
PACKAGES
TSSOP20
BLOCK DIAGRAM
VDDS
VDD
GNDS
iC-MQ
SERIAL I2C
INTERFACE
CONFIGURATION
REGISTER
SINE-TO-DIGITAL
CONVERSION
PHI
PGA INPUT
LineCount
Monitor
Sin/Cos
Monitor
REVERSE POLARITY
PROTECTION
GND
SCL
MONITORING
C
PWRon
Tw
Toff
ERR
SDA
SIGNAL PATH MUX
CALIBRATION
X1
I/V
x
CH0
DIGITAL DRIVER
OUTPUT
PZ
X2
I/V
x
x
CH1
-
SIGNAL LEVEL
CONTROLLER
ZIN
NZ
X3
I/V
PB
X4
I/V
x
x
CH2
-
x
-
+
x
NB
+
ADJ
-
PA
X5
I/V
X6
I/U
x
x
NA
ACO
Copyright © 2006, 2010 iC-Haus
ICHAUS [ IC-HAUS GMBH ]
