產品詳細資料

Number of input channels 2 Number of outputs 10 RMS jitter (fs) 65 Features JESD204B Output frequency (min) (MHz) 0.03 Output frequency (max) (MHz) 2000 Output type LVDS, LVPECL Input type LVCMOS, LVDS, LVPECL Supply voltage (min) (V) 1.7 Supply voltage (max) (V) 3.465 Operating temperature range (°C) -40 to 85
Number of input channels 2 Number of outputs 10 RMS jitter (fs) 65 Features JESD204B Output frequency (min) (MHz) 0.03 Output frequency (max) (MHz) 2000 Output type LVDS, LVPECL Input type LVCMOS, LVDS, LVPECL Supply voltage (min) (V) 1.7 Supply voltage (max) (V) 3.465 Operating temperature range (°C) -40 to 85
VQFN (RTQ) 56 64 mm² 8 x 8
  • Dual-loop PLL architecture
  • Ultra low noise (10 kHz to 20 MHz):
    • 48-fs RMS jitter at 1966.08 MHz
    • 50-fs RMS jitter at 983.04 MHz
    • 61-fs RMS jitter at 122.88 MHz
  • –165-dBc/Hz noise floor at 122.88 MHz
  • JESD204B support
    • Single shot, pulsed, and continuous SYSREF
  • 10 differential output clocks in 8 frequency groups
    • Programmable output swing between 700 mVpp to 1600 mVpp
    • Each output pair can be configured to SYSREF clock output
    • 16-bit channel divider
    • Minimum SYSREF frequency of 25 kHz
    • Maximum output frequency of 2 GHz
    • Precision digital delay, dynamically adjustable
      • Digital delay (DDLY) of ½ × clock distribution path frequency (2 GHz maximum)
    • 60-ps step analog delay
    • 50% duty cycle output divides, 1 to 65535
      (even and odd)
  • Two reference inputs
    • Holdover mode, when inputs are lost
    • Automatic and manual switch-over modes
    • Loss-of-signal (LOS) detection
  • 0.88-W typical power consumption with 10 outputs active
  • Operates typically from a 1.8-V (outputs, inputs) and 3.3-V supply (digital, PLL1, PLL2_OSC, PLL2 core)
  • Fully integrated programmable loop filter
  • PLL2
    • PLL2 phase detector rate up to 250 MHz
    • OSCin frequency-doubler
    • Integrated low-noise VCO
  • Internal power conditioning: better than –80 dBc PSRR on VDDO for 122.88-MHz differential outputs
  • 3- or 4-wire SPI interface (4-wire is default)
  • –40ºC to +85ºC industrial ambient temperature
  • Supports 105ºC PCB temperature (measured at thermal pad)
  • LMK04610: 8-mm × 8-mm VQFN-56 package with 0.5-mm pitch
  • Dual-loop PLL architecture
  • Ultra low noise (10 kHz to 20 MHz):
    • 48-fs RMS jitter at 1966.08 MHz
    • 50-fs RMS jitter at 983.04 MHz
    • 61-fs RMS jitter at 122.88 MHz
  • –165-dBc/Hz noise floor at 122.88 MHz
  • JESD204B support
    • Single shot, pulsed, and continuous SYSREF
  • 10 differential output clocks in 8 frequency groups
    • Programmable output swing between 700 mVpp to 1600 mVpp
    • Each output pair can be configured to SYSREF clock output
    • 16-bit channel divider
    • Minimum SYSREF frequency of 25 kHz
    • Maximum output frequency of 2 GHz
    • Precision digital delay, dynamically adjustable
      • Digital delay (DDLY) of ½ × clock distribution path frequency (2 GHz maximum)
    • 60-ps step analog delay
    • 50% duty cycle output divides, 1 to 65535
      (even and odd)
  • Two reference inputs
    • Holdover mode, when inputs are lost
    • Automatic and manual switch-over modes
    • Loss-of-signal (LOS) detection
  • 0.88-W typical power consumption with 10 outputs active
  • Operates typically from a 1.8-V (outputs, inputs) and 3.3-V supply (digital, PLL1, PLL2_OSC, PLL2 core)
  • Fully integrated programmable loop filter
  • PLL2
    • PLL2 phase detector rate up to 250 MHz
    • OSCin frequency-doubler
    • Integrated low-noise VCO
  • Internal power conditioning: better than –80 dBc PSRR on VDDO for 122.88-MHz differential outputs
  • 3- or 4-wire SPI interface (4-wire is default)
  • –40ºC to +85ºC industrial ambient temperature
  • Supports 105ºC PCB temperature (measured at thermal pad)
  • LMK04610: 8-mm × 8-mm VQFN-56 package with 0.5-mm pitch

The LMK0461x device family is the industry’s highest performance and lowest power jitter cleaner with JESD204B support.

The LMK0461x device family is the industry’s highest performance and lowest power jitter cleaner with JESD204B support.

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技術文件

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重要文件 類型 標題 格式選項 日期
* Data sheet LMK04610 Ultra-Low Noise and Low Power JESD204B Compliant Clock Jitter Cleaner With Dual-Loop PLLs datasheet (Rev. B) PDF | HTML 2018年 1月 9日
Application note JESD204B Multi-Device Synchronization Using LMK0461x 2017年 8月 16日
Application note LMK0461x Phase Noise Performance With DC-DC Converters (Rev. B) 2017年 7月 20日
Application note SDPLL for LMK046xx Family 2017年 5月 15日

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開發板

LMK04610EVM — 具有雙 PLL 且符合 JESD204B 標準的 LMK04610 超低雜訊和低功耗時鐘抖動清除器 EVM

LMK04610EVM 配備 LMK04610 超低雜訊、低功耗且符合 JESD204B 規範的雙迴路抖動清除器。當所有輸出運作時功耗僅為 900mW,LMK04610 可搭配低雜訊 VCXO 模組支援低於 74fs 抖動(頻率範圍為 12kHz 至 20MHz)。內建 LDO 提供高 PSRR,可支援 DC/DC 轉換器。
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Texas Instruments clocks and synthesizers (TICS) pro software is used to program the evaluation modules (EVMs) for product numbers with these prefixes: CDC, LMK and LMX. These products include phase-locked loops and voltage-controlled oscillators (PLL+VCO), synthesizers and clocking devices.

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LMK0461X IBIS Model

SNAM204.ZIP (126 KB) - IBIS Model
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VQFN (RTQ) 56 Ultra Librarian

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