iC-NQI
preliminar y
Rev A2, Page 1/26
13-bit Sin/D CONVERTER WITH CALIBRATION
FEATURES
o
Resolution of up to 8192 angle steps per sine/cosine period
o
Binary and decimal resolution settings, e.g. 500, 512, 1000,
1024; programmable angle hysteresis
o
Conversion time of just 250 ns including amplifier settling
o
Count-safe vector follower principle, real-time system with a
70 MHz sampling rate
o
Direct sensor connection; selectable input gain
o
Front-end signal conditioning features offset (8 bits), amplitude
ratio (5 bits) and phase (6 bits) calibration
o
Input frequency of up to 250 kHz
o
Incremental A QUAD B outputs with a selectable minimum
transition distance (e.g. 0.25 µs for 1 MHz at A)
o
Index signal processing adjustable in position and width
o
Serial output of absolute angle data at clock rates of up to
10 MHz
o
Error monitoring: frequency, amplitude, configuration (CRC)
o
Multiturn counting up to 24 bits
o
Device setup from serial EEPROM or 2-wire interface
o
ESD protection and TTL-/CMOS-compatible outputs
APPLICATIONS
o
Interpolator IC for position data
acquisition from analog
sine/cosine sensors
o
Optical linear/rotary encoders
o
MR sensor systems
PACKAGES
TSSOP20
BLOCK DIAGRAM
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