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AD9851BRSZ

Specifications

SKU: 844588

BUY AD9851BRSZ https://www.utsource.net/itm/p/844588.html
180 MHz Complete DDS synthesizer
Parameter Symbol Conditions Min Typical Max Unit
Output Frequency Range fOUT VDD = 5V, REFCLK = 125 MHz 0 - 60 MHz
Reference Clock Input fREF - 0 - 125 MHz
Power Supply Voltage VDD - 4.75 5.0 5.25 V
Power Consumption PCON fOUT = 10 MHz - 230 - mW
Phase Noise (at 1 kHz) φN fOUT = 10 MHz -108 - - dBc/Hz
Spurious Free Dynamic Range (SFDR) SFDR fOUT = 10 MHz, fREF = 125 MHz - 70 - dBc
Harmonic Distortion HD fOUT = 10 MHz - -45 - dBc
Non-Harmonic Spurious NHSP fOUT = 10 MHz - -60 - dBc
Output Current IOUT - 0.5 1.5 2.5 mA
Output Impedance ZOUT - - 50 - Ω
Operating Temperature Toper - -40 - 85 °C
Storage Temperature Tstg - -65 - 150 °C

Instructions for Use:

  1. Power Supply:

    • Ensure the power supply voltage (VDD) is within the range of 4.75V to 5.25V.
    • Use a stable and clean power source to avoid noise and interference.
  2. Reference Clock:

    • The reference clock input (fREF) should be between 0 MHz and 125 MHz.
    • A stable and accurate reference clock is crucial for precise output frequency.
  3. Output Configuration:

    • The output frequency (fOUT) can be set from 0 MHz to 60 MHz.
    • Use the appropriate control signals and programming methods to set the desired frequency.
  4. Phase Noise:

    • The phase noise at 1 kHz offset from the carrier should be less than -108 dBc/Hz for optimal performance.
    • Minimize external noise sources and use proper shielding to maintain low phase noise.
  5. Dynamic Range:

    • The spurious free dynamic range (SFDR) is typically 70 dBc, indicating the ability to generate a clean signal with minimal spurious content.
    • Ensure the system design minimizes harmonic distortion and non-harmonic spurious components.
  6. Output Current and Impedance:

    • The output current (IOUT) ranges from 0.5 mA to 2.5 mA.
    • The output impedance (ZOUT) is typically 50 Ω, matching standard RF systems.
  7. Temperature Considerations:

    • Operate the device within the temperature range of -40°C to 85°C for reliable performance.
    • Store the device in an environment where the temperature does not exceed -65°C to 150°C.
  8. Programming:

    • Refer to the datasheet for detailed programming instructions and control register configurations.
    • Use the provided software tools or custom code to configure the device according to your application requirements.
  9. Layout and PCB Design:

    • Follow recommended PCB layout guidelines to minimize parasitic effects and ensure proper signal integrity.
    • Use ground planes and decoupling capacitors to reduce noise and improve stability.
  10. Safety and Handling:

    • Handle the device with care to avoid static discharge and physical damage.
    • Follow ESD (Electrostatic Discharge) precautions during handling and installation.
(For reference only)

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