13-bit Signal Conditioning Interpolator Extended Temp

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IC-NQI TSSOP20 ET -40/125

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iC-NQI is a monolithic A/D converter which, by applying a count-safe vector follower principle, converts sine/cosine sensor signals with a selectable resolution and hysteresis into angle position data.
The front-end ampli?ers are con?gured as instrumentation ampli?ers, permitting sensor bridges to be directly connected without the need for external resistors. Various programmable D/A converters are available for the conditioning of sine/cosine sensor signals with regard to offset, amplitude ratio and phase errors.  Front-end gain can be set in stages graded to suit all common differential sensor signals from approximately 20 mVpp to 1.5 Vpp, and also single-end from 40 mVpp to 3 Vpp respectively.


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Resolution of up to 8192 angle steps per sine/cosine period
Binary and decimal resolution settings, e.g. 500, 512, 1000, 1024; programmable angle hysteresis
Conversion time of just 250 ns including amplifier settling
Count-safe vector follower principle, real-time system with a 70 MHz sampling rate
Direct sensor connection; selectable input gain
Front-end signal conditioning features offset (8 bits), Amplitude ratio (5 bits) and phase (6 bits) calibration
Input frequency of up to 250 kHz
Incremental A QUAD B outputs with a selectable minimum transition distance (e.g. 0.25 μs for 1 MHz at A)
Index signal processing adjustable in position and width
Serial output of absolute angle data at clock rates of up to 10 MHz
Error monitoring: frequency, amplitude, configuration (CRC)
Multiturn counting up to 24 bits
Device setup from serial EEPROM or 2-wire interface
ESD protection and TTL-/CMOS-compatible outputs


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13-bit Signal Conditioning Interpolator Extended Temp