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LMK5C22212A

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Two DPLL, two APLL, two-input and 12-output network synchronizer with BAW VCO

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Data sheet

LMK5C22212A

ACTIVE
Order now

Product details

Function Clock network synchronizer Number of outputs 12 Output type CML, LVCMOS, LVDS, LVPECL RMS jitter (fs) 47 Features JESD204B Output frequency (min) (MHz) 0.000000000001 Output frequency (max) (MHz) 1250 Input type HCSL, LVCMOS, LVDS, LVPECL, XTAL Operating temperature range (°C) -40 to 85 Number of input channels 2
Function Clock network synchronizer Number of outputs 12 Output type CML, LVCMOS, LVDS, LVPECL RMS jitter (fs) 47 Features JESD204B Output frequency (min) (MHz) 0.000000000001 Output frequency (max) (MHz) 1250 Input type HCSL, LVCMOS, LVDS, LVPECL, XTAL Operating temperature range (°C) -40 to 85 Number of input channels 2
VQFN (RGC) 64 81 mm² (9 mm × 9 mm)
  • Ultra-low jitter BAW VCO based Wireless Infrastructure and Ethernet clocks
    • 40fs typical/ 57fs maximum RMS jitter at 491.52MHz
    • 50fs typical/ 62fs maximum RMS jitter at 245.76MHz

  • 2 high-performance Digital Phase Locked Loops (DPLLs) with 2 Analog Phase Locked Loops (APLLs)

    • Programmable DPLL loop filter bandwidth from 1mHz to 4kHz
    • < 1ppt DCO frequency adjustment step size
  • 2 differential or single-ended DPLL inputs
    • 1Hz (1PPS) to 800MHz input frequency
    • Digital Holdover and Hitless Switching
  • 12 differential outputs with programmable HSDS, AC-LVPECL, LVDS and HSCL formats
    • Up to 16 total frequency outputs when configured with 6 LVCMOS frequency outputs on OUT0_P/N, OUT1_P/N, GPIO1 and GPIO2 and 10 differential outputs on OUT2_P/N to OUT11_P/N
    • 1Hz (1PPS) to 1250MHz output frequency with programmable swing and common mode
    • PCIe Gen 1 to 6 compliant
  • I2C or 3-wire/4-wire SPI
  • Ultra-low jitter BAW VCO based Wireless Infrastructure and Ethernet clocks
    • 40fs typical/ 57fs maximum RMS jitter at 491.52MHz
    • 50fs typical/ 62fs maximum RMS jitter at 245.76MHz

  • 2 high-performance Digital Phase Locked Loops (DPLLs) with 2 Analog Phase Locked Loops (APLLs)

    • Programmable DPLL loop filter bandwidth from 1mHz to 4kHz
    • < 1ppt DCO frequency adjustment step size
  • 2 differential or single-ended DPLL inputs
    • 1Hz (1PPS) to 800MHz input frequency
    • Digital Holdover and Hitless Switching
  • 12 differential outputs with programmable HSDS, AC-LVPECL, LVDS and HSCL formats
    • Up to 16 total frequency outputs when configured with 6 LVCMOS frequency outputs on OUT0_P/N, OUT1_P/N, GPIO1 and GPIO2 and 10 differential outputs on OUT2_P/N to OUT11_P/N
    • 1Hz (1PPS) to 1250MHz output frequency with programmable swing and common mode
    • PCIe Gen 1 to 6 compliant
  • I2C or 3-wire/4-wire SPI

The LMK5C22212A is a high-performance network synchronizer and jitter cleaner designed to meet the stringent requirements of wireless communications and infrastructure applications.

The network synchronizer integrates 2 DPLLs to provide hitless switching and jitter attenuation with programmable loop bandwidth and no external loop filters, maximizing flexibility and ease of use. Each DPLL phase locks a paired APLL to a reference input.

APLL1 features ultra high performance PLL with TI’s proprietary Bulk Acoustic Wave (BAW) technology (known as the BAW APLL) and can generate output clocks with 40fs typical / 60fs maximum 12kHz to 20MHz RMS jitter at 491.52MHz, independent of the jitter and frequency of the XO and DPLL reference inputs. APLL2/DPLL2 provides an option for a second frequency and/or synchronization domain.

Reference validation circuitry monitors the DPLL reference clocks and performs a hitless switch between inputs upon detecting a switchover event. Zero-Delay Mode (ZDM) and phase cancellation can be enabled to control the phase relationship from input to outputs.

The device is fully programmable through I2C or SPI. The integrated EEPROM can be used to customize system start-up clocks. The device also features factory default ROM profiles as fallback options.

The LMK5C22212A is a high-performance network synchronizer and jitter cleaner designed to meet the stringent requirements of wireless communications and infrastructure applications.

The network synchronizer integrates 2 DPLLs to provide hitless switching and jitter attenuation with programmable loop bandwidth and no external loop filters, maximizing flexibility and ease of use. Each DPLL phase locks a paired APLL to a reference input.

APLL1 features ultra high performance PLL with TI’s proprietary Bulk Acoustic Wave (BAW) technology (known as the BAW APLL) and can generate output clocks with 40fs typical / 60fs maximum 12kHz to 20MHz RMS jitter at 491.52MHz, independent of the jitter and frequency of the XO and DPLL reference inputs. APLL2/DPLL2 provides an option for a second frequency and/or synchronization domain.

Reference validation circuitry monitors the DPLL reference clocks and performs a hitless switch between inputs upon detecting a switchover event. Zero-Delay Mode (ZDM) and phase cancellation can be enabled to control the phase relationship from input to outputs.

The device is fully programmable through I2C or SPI. The integrated EEPROM can be used to customize system start-up clocks. The device also features factory default ROM profiles as fallback options.
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* Data sheet LMK5C22212A 2-DPLL 2-APLL 2-IN 12-OUT Network Synchronizer With JESD204B/C and BAW for Wireless Communications datasheet PDF | HTML Nov 22, 2024
Application note Termination Guidelines for Differential and Single-Ended Signals PDF | HTML Dec 10, 2025
User guide LMK5C22212A Programmer's Guide (Rev. A) PDF | HTML Nov 17, 2025
Application note Oscillator Power Considerations for PLL Devices PDF | HTML Oct 30, 2025

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LMK5B12212EVM — LMK5B12212 evaluation module

The LMK5B12212 evaluation module (EVM) is for the LMK5B12212 network clock generator and synchronizer. The EVM can be used for device evaluation, compliance testing and system prototyping.  The LMK5B12212 integrates three analog PLLs (APLL) and three digital PLLs (DPLL) with programmable loop (...)

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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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CLOCK-PERFDATA-DESIGN — Clock performance data and register settings for clock generators, network synchronizers, jitter cleaners, and other clocking devices.

Configuration, raw phase noise data, noise plots, and register data for common use cases on clock generators, network synchronizers, jitter cleaners, and other clocking devices
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