Programmable 9-Bit Sin/Cos Interpolation IC with Fail-Safe RS422 Line Driver

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Interpolator iC-MQ is a non-linear A/D converter which digitizes sine/cosine sensor signals using a count-safe tracking conversion principle with selectable resolution and hysteresis. The angle resolution per sine period can be set using SELRES; up  to 400 angle steps are possible (see page 26).


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No-latency sine-to-digital conversion to 400 angle steps
200 kHz input frequency for interpolation factors of x1 to x5 (10 kHz for x100)
Flexible I/O pin configuration 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 as LED or MR bridge supply
Fault-tolerant RS422 line drivers to 50 mA
Quadrature signals with selectable min. phase distance for glitch free counter control
Index signal processing with adjustable position and length
Signal and operation monitoring with programmable alarm output, driver shutdown and error memory
I2C multimaster interface for in-circuit calibration and parameters (EEPROM)
Supply monitoring with power switch for reverse polarity tolerant systems
Excessive temperature protection with sensor calibration
Single 4.3 to 5.5 V supply, operation from -25(-40) to +100 C

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