IC-TW28 Datasheet, PDF (1/80 Pages) IC-Haus GmbH – 10-BIT SIN/COS INTERPOLATOR

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Rev D2, Page 1/80
FEATURES
• Differential PGA inputs for sine, cosine, and index
• Input frequency of up to 700 kHz
• AB output frequency of up to 12.5 MHz
• Automatic compensation of amplitude, offset, and phase errors
• Low latency (typ. 1.5 µs)
• Differential RS422 line driver outputs for ABZ or UVW
• Simultaneous single-ended outputs for ABZ and UVW
• Digital filtering for ultra-low output jitter
• Complete status and fault monitoring capabilities
• Configured by pins or SPI
• In-field re-configuration via Encoder Link interface
• Easy to use with built-in line driver, EEPROM, and oscillator
• Push-button automatic calibration for fast commissioning
• LED intensity control by PWM output
• 10-bit angle data and 14-bit multi-cycle counter available to SPI
• Capture register for coded reference marks and touch-probe
applications
• Space-saving 5 x 5 mm QFN package
• Single 3.3 V supply
APPLICATIONS
• Rotary and linear encoders
• Magnetic or optical sin/cos
sensor interface
• Brushless motor commutation
(2...64 poles)
• Imbedded motion control
PACKAGES
32-pin QFN
5 mm x 5 mm x 0.9 mm
RoHS compliant
BLOCK DIAGRAM
SIN
Amplifier
Offset
COS
iC-TW28
ADC
ADC
Sin/Cos
Error
Correction
ATAN
Filter
ZERO
VC
VREF
50 MHz
Oscillator
References
xRST
Power-on Reset
ADC
ZERO
Error
Correction
Comparator
Control
Sin/Cos
Adaption
LED Intensity
Control
EEPROM
ZERO Adaption
Push-button
Auto-calibration
Signal Quality
Monitor
Filter Adaption
Fault Handling
IRQ Generation
LED
xCALIB
xIRQ
ABZ and
UVW
Generator
Multycycle
Counter
Position
Capture
Encoder Link
Interface
SPI
Pin
Configuration
RS422
Z
B
A
PINCFG
xSS/C0
SCLK/C1
SI/C2
SO/C3
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http://www.ichaus.com