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    參數(shù)資料
    型號(hào): SD-14592D3-594S
    廠商: DATA DEVICE CORP
    元件分類: 位置變換器
    英文描述: SYNCHRO OR RESOLVER TO DIGITAL CONVERTER, MDIP36
    封裝: DDIP-36
    文件頁數(shù): 11/16頁
    文件大小: 152K
    代理商: SD-14592D3-594S
    4
    Data Device Corporation
    www.ddc-web.com
    SD-14590/91/92
    D-02/02-250
    TABLE 1. SD-14590/91/92 SPECIFICATIONS (CONT.)
    These specifications apply over the rated power supply, temperature,
    and reference frequency ranges; 10% signal amplitude variation and
    10% harmonic distortion.
    VALUE
    PARAMETER
    TRANSFORMER
    CHARACTERISTICS (CONT’D)
    Signal Transformer
    Carrier Frequency Range
    Breakdown Voltage to GND
    Minimum Input Impedances
    (Balanced)
    90V L-L
    26V L-L
    11.8V L-L
    60 Hz TRANSFORMERS
    Reference Transformer
    Carrier Frequency Range
    Input Voltage Range
    Input Impedance
    Input Common Mode Voltage
    Output Description
    Output Voltage
    Power Required
    Signal Transformer
    Carrier Frequency Range
    Input Voltage Range
    Input Impedance
    Input Common Mode Voltage
    Output Description
    Output Voltage
    Power Required
    360 - 1000 Hz
    700 V peak
    Synchro ZIN(ZSO) Resolver ZIN
    180
    100k
    30k
    20k
    30k
    47 - 440 Hz
    80 - 138 V rms; 115 V rms
    nominal resistive
    600 K
    min resistive
    500 V rms transformer isolated
    +R (in phase with RH-RL) and -R (in
    phase with RL-RH) derived from op-
    amps. Short-Circuit proof.
    3.0 V nominal riding on ground refer-
    ence V. Output Voltage level tracks
    input level.
    4 mA typ, 7 mA max from +15 V
    supply.
    47 - 440 Hz
    10 - 100 V rms L-L; 90 V rms L-L
    nominal
    148 k
    min L-L balanced resistive
    ±500 V rms transformer isolated
    Resolver Output:
    - sine (-S) + cosine (+C) derived
    from op-amps.
    Short-circuit proof.
    1.0 V rms nominal riding on ground
    reference V. Output Voltage level
    tracks input level.
    4 mA typ, 7 mA max from +15 V
    supply.
    NOTES:
    1. Pin programmable for SD-14590 only; SD-14591 is 14 bits and
    SD-14592 is 16 bits
    2. See TABLE 6.
    3. See Logic Input/Output section.
    30
    90
    150
    210
    270
    330
    360
    θ
    (DEGREES)
    CCW
    In
    Phase
    with
    RL-RH
    of
    Converter
    and
    R2-R1
    of
    CX.
    0
    S1-S3 = V
    SIN
    θ
    MAX
    S3-S2 = V
    SIN(
    θ + 120°)
    MAX
    S2-S1 = V
    SIN(
    θ + 240°)
    MAX
    - V
    MAX
    + V
    MAX
    30
    90
    150
    210
    270
    330
    360
    θ
    (DEGREES)
    CCW
    In
    Phase
    with
    RH-RL
    of
    Converter
    and
    R2-R4
    of
    RX.
    0
    S2-S4 = V
    COS
    θ
    MAX
    S1-S3 = V
    SIN(
    θ)
    MAX
    - V
    MAX
    + V
    MAX
    Standard Synchro Control Transmitter (CX) Outputs as a Function of CCW
    Rotation From Electrical Zero (EZ).
    Standard Resolver Control Transmitter (RX) Outputs as a Function of CCW
    Rotation From Electrical Zero (EZ) With R2-R4 Excited.
    FIGURE 2. SYNCHRO AND RESOLVER SIGNALS
    INTRODUCTION
    The circuit shown in FIGURE 1, the SD-14590/91/92 block dia-
    gram, consists of three main parts: the signal input; a feedback
    loop whose elements are the control transformer, demodulator,
    error processor, VCO and up-down counter; and digital interface
    circuitry including various latches and buffers.
    SIGNAL INPUTS
    The SD-14590/91/92 series offer three input options: synchro,
    resolver, and direct. In a synchro or resolver mode, shaft angle
    data is transmitted as the ratio of carrier amplitudes across the
    input terminals. Synchro signals, which are of the form sin
    θ
    cos
    ωt, sin(θ + 120°)cosωt, and sin(θ + 240°)cosωt are internally
    converted to resolver format; sin
    θcosωt and cosθcosωt. Direct
    inputs accept 1 Vrms inputs in resolver form, (sin
    θcosωt and
    cos
    θcosωt) and are buffered prior to conversion. FIGURE 2 illus-
    trates synchro and resolver signals as a function of the angle
    θ.
    The solid-state signal and reference inputs are true differential
    inputs with high AC and DC common mode rejection. Input
    impedance is maintained with power off.
    SOLID-STATE BUFFER INPUT PROTECTION:
    TRANSIENT VOLTAGE SUPPRESSION
    The solid-state signal and reference inputs are true differential
    inputs with high AC and DC common rejection so most applica-
    tions will not require units with isolation transformers. Input
    impedance is maintained with power off. The current AC peak
    +DC common mode voltage should not exceed the values in
    TABLE 1.
    90 V line-to-line systems may have voltage transients which
    exceed the 500 V specification. These transients can destroy the
    thin-film input resistor network in the hybrid. Therefore, 90 VL-L
    solid-state input modules may be protected by installing voltage
    suppressors as shown. Voltage transients are likely to occur
    whenever synchro or resolver inputs are switched on and off. For
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