IC-MG_14 Datasheet, PDF (1/22 Pages) IC-Haus GmbH – 8-Bit Sin/Cos INTERPOLATION IC WITH RS422 DRIVER

iC-MG
8-Bit Sin/Cos INTERPOLATION IC WITH RS422 DRIVER
FEATURES
o Real-time tracking, no-missing-code interpolation with
selectable factors: x1, x2, x4, x5, x8, x10, x16, x20, x25, x50
o High input frequency of up to 500 kHz at x1 and x2
(200 kHz at x4 and x5, 100 kHz at x10, 20 kHz for x50)
o Excellent accuracy (typ. 0.6 LSB) and repeatability (typ. 0.1 LSB)
o Differential PGA inputs with selectable input resistance for
voltage and current signals
o Adjustable signal conditioning for offset, amplitude, phase
o Unique signal and calibration stabilization feature: supply of
encoder LED or MR bridge via controlled 40 mA current source
o Fail-safe RS422 encoder quadrature outputs with index signal
o Adjustable index position and length (from 1/4 to 1 T)
o Preselectable minimum phase distance for fail-safe counting
o Clipping, loss-of-signal and loss-of-tracking indication
o Setup via serial EEPROM interface
o Sub-system power switch offers reverse polarity protection for
the overall system
o Single 5 V supply, operation from -25(40) ^◦C to +100 ^◦C
Rev D1, Page 1/22
APPLICATIONS
o Optical and magnetic position
sensors
o Rotary encoders
o Linear encoders
PACKAGES
TSSOP20
BLOCK DIAGRAM
PCOS
+
-
-
NCOS
+
COSINE INPUT / CH.2
PSIN
+
-
iC-MG
COS
SIN
PHASE
CORRECTION
COUNTER
TAN
NSIN
-
+
SINE INPUT / CH1
PZERO
+
-
Sin/D CONVERSION
SIGNAL LEVEL CONTROLLER
-
NZERO
+
ZERO INPUT / CH0
Z_In
INDEX ENABLE
SIGNAL MONITOR
VDDS GNDS
REVERSE
POLARITY
PROTECTION
VDD
GND
B
NB
A
NA
Z
NZ
RS422 LINE
DRIVER
SDA
E2PROM
INTERFACE
SCL
PWR
NERR
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http://www.ichaus.com