iC-Haus iC-MR3

13-Bit S&H Sin/Cos Interpolator with 2.5V/5V Controller Interfaces

  • Triggered 13-bit sine-to-digital conversion within 2 μs
  • PGA inputs for differential and single-ended signals of up to 500 kHz
  • Variable input resistance for current/voltage conversion

Datasheet

Software

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Description

iC-Haus iC-MR3

iC-Haus iC-MR3 combines high-precision analog signal-conditioning with 1 Vpp line drivers for sin/cos signals and a fast, high-resolution sampling sine-to-digital converter. An absolute data interface (ADI) presets period counting, whereas multiturn and singleturn offset values adjust the final position data. The device aims at high-resolution position encoders and safety-oriented applications.

Types and Packages

  • iC-MR3 QFN48-7×7, RoHS compliant MSL 3, 260°C

Features

  • Triggered 13-bit sine-to-digital conversion within 2 μs
  • PGA inputs for differential and single-ended signals of up to 500 kHz
  • Variable input resistance for current/voltage conversion
  • Signal conditioning for offset, amplitude, and phase
  • Input signal stabilization through LED or MR bridge current control
  • 8-bit parallel and serial I/O interfaces (BiSS, SSI, and SPI) with separate low-voltage supply
  • Absolute data interface (BiSS/SSI) for initialization
  • Position data of up to 50 bit with adjustable ST/MT data length
  • Position data preset using ST/MT offset registers
  • 12-bit A/D converter for temperature sensing
  • Special functions for safety applications (signal monitoring, sign-of-life counter, and extended CRC)
  • Current-limited, diff. 1 Vpp sin/cos outputs to 100 Ω
  • Device configuration through I/O interfaces or I2C EEPROM
  • Single-sided 5 V operation from -40 to +125 °C

Application

  • Fast position decoding for safety-oriented encoder systems
  • Motor feedback systems