ADW71205YSTZ

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1. DESCRIPTION

The ADW71205YSTZ is a complete 12-bit resolution tracking resolver-to-digital converter that contains an on-board programmable sinusoidal oscillator providing sine wave excitation for resolvers. The converter accepts 3.15 V p-p ± 27% input signals on the Sin and Cos inputs. A Type II tracking loop is employed to track the inputs and convert the input Sin and Cos information into a digital representation of the input angle and velocity. The maximum tracking rate is a function of the external clock frequency. The performance of the AD2S105 is specified across a frequency range of 8.192 MHz ± 25%, allowing a maximum tracking rate of 1250 rps. 

2. feature

    1. Complete monolithic resolver-to-digital converter (RDC)

    2. Parallel and serial 12-bit data ports   

    3. System failure detection

    4. ±11 arc minutes accuracy

    5. Input signal range: 3.15 V p-p ± 27%

    6. Absolute position and speed output

    7. 1250 rps maximum tracking rate, 12-bit resolution

    8. Incremental encoder simulation (1024 pulses/revolution)

    9. On-board programmable sine oscillator

  10. Single power supply operation (5.00 V ± 5%)

  11. −40°C to +125°C temperature rating

  12. 44-pin LQFP

  13. 4 kV ESD protection

  14. Meets automotive application requirements

3. Product Highlights

    1. Ratio tracking conversion. Type II tracking Provide continuous output position data cyclically, without Conversion delay. It also provides noise immunity and Refer to harmonic distortion tolerance and input signal.

    2. System failure detection. Fault detection circuit can detect Loss of resolver signal, out-of-range input signal, input Signal mismatch or loss of position tracking.

    3. Enter the signal range. Sin and Cos input is acceptable 3.15 V p-p ± 27% differential input voltage.

    4. Programmable excitation frequency. Excitation frequency Easily programmable to 10 kHz, 12 kHz, 15 kHz or 20 kHz By using the frequency selection pins (FS1 and FS2 pins).

    5. Three-format position data. Absolute 12-bit angular position Access data via 12-bit parallel port or 3-wire port Serial interface. Incremental encoder emulation is standard A-quad-B format, can provide direction output.

    6. Digital speed output. Access 12-bit signed number speed Via 12-bit parallel port or 3-wire serial interface.

4. Application

    1. Automotive motion sensing and control

    2. hybrid car

    3. Electric power steering

    4. Integrated starter generator/alternator

    5. Industrial motor control

    6. Process control

5. Pin configuration

6. Function Description

7. Package overview