Eval. Board IC-NQ

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Unit Price:$87.00
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Product Information

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iC-NQ 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. This absolute value is output via a high-speed synchronousserial BiSS interface and trails a master clock rate of up to 10 Mbit/s, or, alternatively, can be set so that it is compatible with SSI. A period counter supplements the position data with a multiturn count and can be configured for BiSS single-cycle data output.

At the same time any changes in output data are converted into incremental A QUAD B encoder signals. Here, the minimum transition distance can be adapted to suit the system on hand (cable length, external counter). A synchronised zero index is generated and output to Z if enabled by the PZERO and NZERO inputs.

The front-end amplifiers are configured as instrumentation amplifiers, 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 singleended sensor signals from 40 mVpp to 3 Vpp respectively.

Two serial interfaces have been included to permit configuration of the device, connection of an EEPROM or synchronous-serial data transfer (BiSS). Both interfaces are bidirectional and enable the complete
configuration of the device including the transfer of setup and system data to the EEPROM for permanent storage. If the memory is detected following a power-down reset, the chip setup is read in and automatically repeated if a CRC error occurs.


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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, realtime system with 70MHz sampling rate
Direct sensor connection; selectable input gain
Front-end signal conditioning features offset (8 bit), amplitude ratio (5 bit) and phase (6 bit) calibration
250 kHz input frequency
Parameterization and absolute angle output via bidirectional high-speed synchronous-serial BiSS Interface (B protocol)
A QUAD B incremental outputs with selectable minimum transition distance (e.g. 0.25 μs for 1MHz at A)
Index signal processing adjustable in position and width
Fault monitoring: frequency, amplitude, configuration (CRC)
Multiturn counting to 8 bit or 24 bit
Fully re-programmable by BiSS interface with access to serial EEPROM to store setup
ESD protection and TTL-/CMOS-compatible outputs

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Eval. Board IC-NQ
Eval. Board IC-NQ