The SC2121 is a 10-bit to 16-bit resolution resolver-to-digital converter that integrates an on-chip programmable sine wave oscillator to provide sine wave excitation to the resolver. The sine and cosine inputs of the converter allow input 315vp-p±27%。A Type II servo loop is used to track the input signal and convert the information from the sine and cosine inputs into digital quantities corresponding to the input angle and velocity. Maximum tracking rate 3125 rps.
Product Introduction:1. Ratio Tracking Conversion Type II tracking loop can continuously output position data without conversion delay. It also suppresses noise and provides tolerance for harmonic distortion of reference and input signals.
2. System fault detection. Fault detection circuitry can detect signal loss of resolver, out-of-range input signal, input signal mismatch, or loss of position tracking. Each fault detection threshold can be individually programmed by the user to optimize for specific applications.
3. Input signal range. The sine and cosine inputs support 315VP-P 27% differential input voltage.
4. Programmable excitation frequency. The excitation frequency can be easily set to multiple standard frequencies ranging from 2kHz to 20kHz.
format of location data. Absolute angular position data can be accessed via a parallel port or a 3-wire serial interface. The incremental encoder** is in the standard A-Quad-B format and provides directional output.
6. Digital speed output. Signed digital speeds can be accessed via parallel ports or a 3-wire serial interface.
SC2121 Main Features:
Complete single-chip resolver-to-digital converter with built-in programmable sine wave oscillator.
Maximum tracking rate: 3125rps (10-bit resolution);1250rps (12-bit resolution);625 rps (14-bit resolution);156.25 rps (16-bit resolution).
Accuracy: 25 arc minutes, 5 arc minutes, 10 arc minutes.
Resolution: 10 12 14 16 bits.
Parallel 10 12-bit and serial 10 12 14 16-bit data ports.
Absolute position and speed output, system fault detection.
Incremental encoders**.
Compatible with DSP and SPI interface standards, single supply supply voltage: 5V 5%.
Input Signal Voltage: 315vp-p±27%；Operating temperature: -40°C to +125°C
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