參數(shù)資料
      型號: SD-14596F2-822L
      廠商: DATA DEVICE CORP
      元件分類: 位置變換器
      英文描述: SYNCHRO OR RESOLVER TO DIGITAL CONVERTER, CDFP36
      封裝: CERAMIC, FP-36
      文件頁數(shù): 13/14頁
      文件大小: 416K
      代理商: SD-14596F2-822L
      INTERFACING - ANALOG OUTPUTS
      The analog outputs are ac error (e), Analog Return (V), and
      Velocity (VEL).
      AC ERROR (e, PIN 12)
      The ac error is proportional to the difference between the input
      angle
      θ and the digital input angle φ, (θ-φ), with a scaling of:
      3.5 mV rms/LSB (14-bit mode)
      1.75 mV rms/LSB (16-bit mode)
      The e output can swing ±3 V min with respect to Analog Return (V).
      ANALOG RETURN (V, PIN 11)
      This internal voltage is not required externally for normal opera-
      tion of the converter. It is used as the internal dc reference and
      the return for the VEL and e outputs. It is nominally +4.3 V and is
      proportional to the +5 V DC supply.
      VELOCITY (VEL, PIN 10)
      The velocity output (VEL, pin 10) is a dc voltage proportional to angu-
      lar velocity d
      θ/dt. The velocity is the input to the voltage controlled
      oscillator (VCO), as shown in FIGURE 1. Its linearity and accuracy is
      dependent solely on the linearity and accuracy of the VCO.
      The VEL output can swing ±1.10 V with respect to Analog Return
      (V). The analog output VEL characteristics are listed in TABLES
      4 and 5.
      The VEL output has dc tachometer quality specs such that it can
      be used as the velocity feedback in servo applications.
      8
      TABLE 4. VELOCITY CHARACTERISTICS
      PARAMETER
      UNITS
      TYP
      MAX
      Polarity
      VEL is negative for positive angular rate.
      Device Type
      Output Voltage (see note)
      V
      400 Hz
      60 Hz
      1.1
      400 Hz
      60 Hz
      1.1
      Voltage Scaling
      rps/1.1 V See Vel. Voltage Scaling TABLE 5.
      Scale Factor Error
      Reversal Error
      Linearity Error
      Zero Offset
      Load
      10
      1
      0.5
      5
      0.5
      10
      1
      0.5
      5
      0.5
      15
      2
      1
      20
      0.5
      15
      2
      1
      20
      0.5
      Note: With respect to Analog Return (V)
      TABLE 5. VELOCITY VOLTAGE SCALING
      (Values in V/rps)
      14 BIT
      DEVICE TYPE
      16 BIT
      0.11
      0.56
      400 Hz
      60 Hz
      0.44
      2.23
      Note: If the resolution is changed while the input is changing, then the
      velocity output voltage and the digital output will have a transient until
      it settles to the new velocity scaling at a speed determined by the
      bandwidth.
      16-BIT BUS
      (MSB) BIT 1
      BIT 2
      BIT 3
      BIT 4
      BIT 5
      BIT 6
      BIT 7
      BIT 8
      BIT 9
      BIT 10
      BIT 11
      BIT 12
      BIT 13
      BIT 14
      BIT 15
      (LSB) BIT 16
      D15
      D14
      D13
      D12
      D11
      D10
      D9
      D8
      D7
      D6
      D5
      D4
      D3
      D2
      D1
      D0
      HBE
      LBE
      INH
      SD-14595/96/97
      INH
      DATA 1-16
      VALID
      500 ns MIN
      150 ns MIN
      0 ns MIN
      100 ns MAX
      HBE, LBE
      FIGURE 14. 16-BIT DATA TRANSFER TIMING
      FIGURE 13. 16-BIT DATA TRANSFER
      %
      % output
      mV
      mA
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