iC-MNF

26-Bit Nonius Encoder with 3-CH. Sampling 14-Bit Sin/D Interpolation

  • Fast 14-bit sine-to-digital conversion within 3 μs
  • Simultaneous sampling of 3 channels
  • 2- or 3-track Nonius calculation of up to 26 bit singleturn position

Datasheet

Software

Evaluation Kits

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Description

iC-MNF is a 3-channel, sine-to-digital converter for interpolating sin/cos sensor signals using a high-precision SAR converter with a selectable resolution of up to 14 bits. Each input has a separate sample-and-hold stage, which halts the track signal for the subsequent sequential digitization. Various 2- and 3-track Vernier scale computations and multiturn gear box synchronization modes can be configured for the calculation of high-resolution angle positions with resolutions of up to 26 bits.

Types and Packages

  • iC-MNF QFN48-7×7, RoHS compliant MSL 3, 260°C

Features

  • Fast 14-bit sine-to-digital conversion within 3 μs
  • Simultaneous sampling of 3 channels
  • 2- or 3-track Nonius calculation of up to 26 bit singleturn position
  • SPI interface and fail-safe RS422 transceiver for BiSS C, SSI
  • Differential 1 Vpp sin/cos outputs to 100 Ω, short-circuit-proof
  • Differential and single-ended PGA inputs for up to 200 kHz
  • Input adaptation to current or voltage signals
  • Adjustable signal conditioning for offset, amplitude and phase
  • Input signal stabilization by LED or MR bridge current control
  • Serial 2-wire interface to multiturn sensors (BiSS, SSI, 2-bit)
  • Position preset function, selectable up/down code direction
  • Reset input for external control of conversion
  • Device setup via I/O interface (BiSS or SPI)
  • CRC-protected confi guration, OEM and USER data from external EEPROM
  • Reverse-polarity-proof and tolerant against faulty output wiring
  • Single 5 V supply, operation from – 40°C to + 125°C

Application

  • Optical and magnetic position sensors
  • Multi-channel sine-to-digital converter
  • Singleturn and multiturn absolute encoders
  • Linear scales for absolute position