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LMK04228NKDT - Texas Instruments

Description: Clock Synthesizer/Jitter Cleaner Ultra low-noise clock jitter cleaner with dual loop PLLs 64-WQFN -40 to 85

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LMK04228NKDT - Texas Instruments - PCB symbol
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PCB Footprints
LMK04228NKDT - Texas Instruments PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - NKD0064A 2021
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3D Models
LMK04228NKDT - Texas Instruments - 3D model - Quad Flat No-Lead - NKD0064A 2021
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LMK04228NKDT Details

  • Manufacturer Part Number:

    LMK04228NKDT

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Date Of Intro:

    2019-07-28

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • JESD-30 Code:

    S-XQCC-N64

  • JESD-609 Code:

    e3

  • Length:

    9 mm

  • Moisture Sensitivity Level:

    3

  • Number of Terminals:

    64

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Clock Frequency-Max:

    1250 MHz

  • Package Body Material:

    UNSPECIFIED

  • Package Code:

    HVQCCN

  • Package Shape:

    SQUARE

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

  • Peak Reflow Temperature (Cel):

    260

  • Primary Clock/Crystal Frequency-Nom:

    400 MHz

  • Seated Height-Max:

    0.8 mm

  • Supply Voltage-Max:

    3.45 V

  • Supply Voltage-Min:

    3.15 V

  • Supply Voltage-Nom:

    3.3 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    QUAD

  • Time@Peak Reflow Temperature-Max (s):

    30

  • Width:

    9 mm

  • uPs/uCs/Peripheral ICs Type:

    CLOCK GENERATOR, OTHER

LMK04228NKDT Frequently Asked Questions (FAQs)

  • Texas Instruments provides a recommended PCB layout in the datasheet, but it's also recommended to follow general high-frequency PCB design guidelines, such as using a solid ground plane, minimizing trace lengths, and using 50-ohm transmission lines for clock signals.
  • The LMK04228NKDT can be configured using the SPI interface. The device has a set of registers that control the clock frequency, phase, and amplitude. Refer to the datasheet for the register map and configuration details.
  • The LMK04228NKDT can generate clock frequencies up to 2.8 GHz, but the maximum frequency may vary depending on the specific application and output configuration.
  • To ensure low jitter, follow proper PCB design and layout guidelines, use a high-quality crystal oscillator, and ensure that the power supply is clean and well-regulated. Additionally, the LMK04228NKDT has built-in jitter filtering and noise reduction features that can be enabled through the SPI interface.
  • Yes, the LMK04228NKDT can be used in a redundant clocking system. The device has a built-in clock switchover feature that allows it to automatically switch between two clock sources in case of a failure.

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LMK04228NKDT Overview

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About Texas Instruments

Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.

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