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LMK5B12204

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Ultra-low jitter clock generator with network synchronization and BAW technology

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Data sheet

LMK5B12204

ACTIVE
Data sheet Order now

Product details

Function Clock network synchronizer, Ultra-low jitter clock generator Number of outputs 4 RMS jitter (fs) 50 Output frequency (min) (MHz) 0.000001 Output frequency (max) (MHz) 800 Input type LVCMOS, LVDS, LVPECL, XTAL Output type CML, HCSL, LVCMOS, LVDS, LVPECL Supply voltage (min) (V) 3.135 Supply voltage (max) (V) 3.465 Features I2C, Integrated EEPROM, Pin programmable, SPI Rating Catalog Operating temperature range (°C) -40 to 85 Number of input channels 2
Function Clock network synchronizer, Ultra-low jitter clock generator Number of outputs 4 RMS jitter (fs) 50 Output frequency (min) (MHz) 0.000001 Output frequency (max) (MHz) 800 Input type LVCMOS, LVDS, LVPECL, XTAL Output type CML, HCSL, LVCMOS, LVDS, LVPECL Supply voltage (min) (V) 3.135 Supply voltage (max) (V) 3.465 Features I2C, Integrated EEPROM, Pin programmable, SPI Rating Catalog Operating temperature range (°C) -40 to 85 Number of input channels 2
VQFN (RGZ) 48 49 mm² 7 x 7
  • Ultra-low jitter BAW VCO based Ethernet clocks
    • 32fs typical RMS jitter at 312.5MHz with 4MHz 1st order high-pass filter (HPF)
    • 44fs typical RMS jitter at 156.25MHz with 4MHz 1st order HPF
    • 50fs typical/ 80fs maximum RMS jitter at 312.5MHz
    • 60fs typical/ 90fs maximum RMS jitter at 156.25MHz
  • One high-performance Digital Phase-Locked Loop (DPLL) paired with two Analog Phase-Locked Loops (APLLs):
    • 1mHz to 4kHz programmable DPLL loop bandwidth
    • < 1ppt per step DCO adjustment for IEEE 1588 PTP clock steering
  • Two differential or single-ended DPLL inputs
    • 1Hz (1PPS) to 800MHz input frequency
    • Digital holdover and hitless switching
  • Four differential outputs with programmable AC-LVPECL, AC-CML, AC-LVDS, HSCL, and 1.8V LVCMOS output formats.
    • Up to 1250MHz output frequency
    • PCIe Gen 1 to 6 compliant
  • I2C, 3-wire SPI, or 4-wire SPI
  • 3.3V core supply and 1.8V, 2.5V, or 3.3V output supply
  • –40°C to +85°C operating temperature
  • Ultra-low jitter BAW VCO based Ethernet clocks
    • 32fs typical RMS jitter at 312.5MHz with 4MHz 1st order high-pass filter (HPF)
    • 44fs typical RMS jitter at 156.25MHz with 4MHz 1st order HPF
    • 50fs typical/ 80fs maximum RMS jitter at 312.5MHz
    • 60fs typical/ 90fs maximum RMS jitter at 156.25MHz
  • One high-performance Digital Phase-Locked Loop (DPLL) paired with two Analog Phase-Locked Loops (APLLs):
    • 1mHz to 4kHz programmable DPLL loop bandwidth
    • < 1ppt per step DCO adjustment for IEEE 1588 PTP clock steering
  • Two differential or single-ended DPLL inputs
    • 1Hz (1PPS) to 800MHz input frequency
    • Digital holdover and hitless switching
  • Four differential outputs with programmable AC-LVPECL, AC-CML, AC-LVDS, HSCL, and 1.8V LVCMOS output formats.
    • Up to 1250MHz output frequency
    • PCIe Gen 1 to 6 compliant
  • I2C, 3-wire SPI, or 4-wire SPI
  • 3.3V core supply and 1.8V, 2.5V, or 3.3V output supply
  • –40°C to +85°C operating temperature

The LMK5B12204 is high-performance network synchronizer and jitter cleaner designed to meet the stringent requirements of Ethernet-based networking applications.

The device integrates one DPLL and two APLLs to provide hitless switching and jitter attenuation using the programmable loop bandwidths (LBWs) with one external loop filter capacitor to maximize the flexibility and ease of use.

APLL1 features an ultra-high performance PLL with TI’s proprietary Bulk Acoustic Wave (BAW) technology in VCO1 and can generate 312.5MHz output clocks with 50fs typical RMS jitter (12kHz to 20MHz) irrespective of the DPLL reference input frequency and jitter characteristics. APLL2 features a conventional LC VCO to provide options for a second frequency and/or synchronization domain.

The integrated EEPROM can be used for custom system configurations on start-up. Internal LDO regulators provide excellent power supply noise rejection (PSNR) to reduce the cost and complexity of the power delivery network.

The LMK5B12204 is high-performance network synchronizer and jitter cleaner designed to meet the stringent requirements of Ethernet-based networking applications.

The device integrates one DPLL and two APLLs to provide hitless switching and jitter attenuation using the programmable loop bandwidths (LBWs) with one external loop filter capacitor to maximize the flexibility and ease of use.

APLL1 features an ultra-high performance PLL with TI’s proprietary Bulk Acoustic Wave (BAW) technology in VCO1 and can generate 312.5MHz output clocks with 50fs typical RMS jitter (12kHz to 20MHz) irrespective of the DPLL reference input frequency and jitter characteristics. APLL2 features a conventional LC VCO to provide options for a second frequency and/or synchronization domain.

The integrated EEPROM can be used for custom system configurations on start-up. Internal LDO regulators provide excellent power supply noise rejection (PSNR) to reduce the cost and complexity of the power delivery network.
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Technical documentation

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Type Title Date
* Data sheet LMK5B12204 1-DPLL 2-APLL 2-IN 4-OUT Network Synchronizer With BAW VCO for Ethernet-Based Networking Applications datasheet (Rev. B) PDF | HTML 10 Dec 2025
Application note The Debug Guide for Network Synchronizers (Digital and Analog Phase-Locked Loops) PDF | HTML 21 Nov 2025
User guide LMK5B12204 register programming manual (Rev. B) PDF | HTML 20 Nov 2025
Application note EMC/EMI Compliant Design for Single Pair Ethernet PDF | HTML 22 Jul 2023
Application note ITU-T G.8262 compliance test results for the LMK05318 (Rev. A) 22 Feb 2019
Application note Supported synchronization modes for TI network synchronizers (Rev. A) 22 Feb 2019
Application note Understanding clocking needs for high-speed 56G PAM-4 serial links (Rev. A) 22 Feb 2019
White paper TI BAW technology enables ultra-low jitter clocks for high-speed networks 17 Feb 2019
Application note How to use the LMK05318 as a jitter cleaner 16 Jan 2019

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LMK05318BEVM — Network synchronizer clock evaluation module

This is an evaluation module (EVM) for the LMK05318B network synchronizer clock device.
The EVM can be used as a flexible, synchronous clock source for rapid evaluation, compliance testing, and system prototyping. SMA ports provide access to the LMK05318B clock inputs and outputs for interfacing to (...)

User guide: PDF
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Support software

TICSPRO-SW — TICS Pro GUI and Live Programming Tool for Clocking Devices

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.

Supported products & hardware

Supported products & hardware

Products
Clock generators
CDCE6214-Q1 — Ultra-low power clock generator supporting PCIe gen 1-5 with 2 inputs, 4 outputs and internal EEPROM CDCI6214 — PCIe Gen4 support ultra-low power clock generator with four programmable outputs & EEPROM LMK02000 — 1 to 800-MHz, precision clock distributor with integrated PLL and 3 LVDS / 5 LVPECL outputs LMK02002 — 1 to 800-MHz, precision clock distributor with integrated PLL and 4 LVPECL outputs LMK03200 — Precision 0-delay clock conditioner with integrated VCO LMK03318 — Ultra-low jitter clock generator family with single PLL LMK03328 — Ultra-low jitter clock generator family with two independent PLLs LMK03806 — Ultra-low jitter clock generator with 14 outputs LMK3H0102 — Bulk acoustic wave (BAW)-based PCIe Gen 1 to Gen 7-compliant referenceless clock generator
Clock buffers
CDCDB2000 — DB2000QL compliant 20-output clock buffer for PCIe® Gen 1 to Gen 5 CDCDB800 — 8-output clock buffer for PCIe® Gen 1 to Gen 6 LMK01000 — 1.6-GHz high performance clock buffer, divider, and distributor with 3 LVDS & 5 LVPECL outputs LMK01010 — 1.6-GHz high performance clock buffer, divider, and distributor with 8 LVDS outputs LMK01020 — 1.6-GHz high performance clock buffer, divider, and distributor with 8 LVPECL outputs LMK01801 — Dual clock distribution LMK1D1208I — 8-channel output, 1.8-V, 2.5-V, and 3.3-V LVDS buffer with I²C LMKDB1104 — Four-output LP-HCSL clock buffer for PCIe Gen 1 to Gen 7 LMKDB1108 — Eight-output LP-HCSL clock buffer for PCIe Gen 1 to Gen 7 LMKDB1120 — DB2000QL-compliant 20-output clock buffer for PCIe Gen 1 to Gen 7 LMKDB1204 — 2-input 4-output LP-HCSL clock multiplexer for PCIe Gen 1 to Gen 7
Oscillators
LMK61E0M — LVCMOS ultra-low jitter programmable oscillator with internal EEPROM LMK61E2 — Ultra-low jitter, EEPROM programmable oscillator for medical imaging and test and measurement
Clock jitter cleaners
LMK04100 — Precision clock conditioners clock jitter cleaner with cascaded PLLs LMK04101 — Jitter cleaner with integrated 1430 to 1570-MHz VCO:3 outputs for 2VPEC/LVPEC+4 outputs for LVCOMS LMK04102 — Jitter cleaner with integrated 1600 to 1750-MHz VCO:3 outputs for 2VPEC/LVPEC+4 outputs for LVCOMS LMK04110 — Jitter cleaner with integrated 1185 to 1296-MHz VCO:5 outputs for 2VPEC/LVPEC LMK04111 — Jitter cleaner with integrated 1430 to 1570-MHz VCO:5 outputs for 2VPEC/LVPEC LMK04131 — Jitter cleaner with integrated 1430 to 1570-MHz VCO:2 outputs for 2VPEC/LVPEC+LVDS+LVCOMS LMK04133 — Jitter cleaner with integrated 1840 to 2160-MHz VCO:2 outputs for 2VPEC/LVPEC+LVDS+LVCOMS LMK04208 — Ultra low-noise clock jitter cleaner with 6 programmable outputs LMK04228 — Ultra low-noise clock jitter cleaner with dual loop PLLs LMK04368-EP — Enhanced product ultra-low-noise 3.2-GHz JESD204C jitter cleaner LMK04610 — Ultra low-noise and low power JESD204B compliant clock jitter cleaner with dual PLLs LMK04616 — Ultra low-noise and low power JESD204B compliant clock jitter cleaner LMK04714-Q1 — Automotive, ultra low-noise 3.2-GHz, JESD204B and JESD204C dual-loop clock jitter cleaner LMK04803 — Low-noise clock jitter cleaner with dual cascaded PLLs and integrated 1.9-GHz VCO LMK04816 — Three input low-noise clock jitter cleaner with dual loop PLLs LMK04821 — Ultra low jitter synthesizer and jitter cleaner with JESD204B support LMK04826 — Ultra low-noise JESD204B compliant clock jitter cleaner with integrated 1840 to1970-MHz VCO0 LMK04828 — Ultra low-noise JESD204B compliant clock jitter cleaner with integrated 2370 to 2630-MHz VCO0. LMK04828-EP — Ultra low-noise JESD204B compliant clock jitter cleaner with temperature range -55 to 105c LMK04832 — Ultra-low-noise, 3.2-GHz, 15-output, JESD204B clock jitter cleaner with dual loop LMK04832-SEP — Radiation-tolerant, 30-krad, ultra-low-noise, 3.2-GHz 15-output JESD204C clock jitter cleaner LMK04832-SP — Radiation-hardened-assured (RHA), ultra-low-noise, 3.2-GHz, 15-output clock jitter cleaner
Clock network synchronizers
LMK05028 — Low-jitter dual-channel network synchronizer clock LMK05318 — Ultra-low jitter single channel network synchronizer clock with BAW LMK05318B — Ultra-low jitter single channel network synchronizer clock with BAW LMK5B12204 — Ultra-low jitter clock generator with network synchronization and BAW technology LMK5B12212 — Ultra-low-jitter, 12-output, one DPLL, two APLL network synchronizer with integrated 2.5-GHz BAW VCO LMK5B33216 — 16-output, three DPLL and APLL, network synchronizer with integrated 2.5-GHz bulk-acoustic-wave VCO LMK5B33414 — 14-output, three DPLL and APLL, network synchronizer with integrated 2.5-GHz bulk-acoustic-wave VCO LMK5C22212A — Three DPLL, two APLL, two-input and 12-output network synchronizer with BAW VCO  LMK5C33216 — Ultra-low jitter clock synchronizer with JESD204B for wireless communications with BAW LMK5C33216A — Three DPLL, three APLL, two-input and 16-output network synchronizer with JESD204B/C and BAW VCO
RF PLLs & synthesizers
LMX1204 — 12.8-GHz RF buffer, multiplier and divider with JESD204B/C SYSREF support and phase synchronization LMX1214 — 1:5 18GHz RF buffer and divider with auxiliary clock LMX1404-EP — 15 GHz Buffer/Multiplier/Divider with SYSREF (JESD204B/C support) and FPGA Clock LMX1860-SEP — Rad tolerant 15GHz RF buffer, multiplier, divider with SYSREF (JESD204B/C support) and FPGA clock LMX1906-SP — Radiation-hardness-assured (RHA) 15GHz buffer, multiplier and divider with SYSREF and FPGA clock LMX2485 — 500-MHz to 3-GHz delta-sigma low power dual PLL for RF personal communications LMX2485E — 50-MHz to 3-GHz delta-sigma low power dual PLL for RF personal communications LMX2485Q-Q1 — 500MHz to 3GHz automotive delta-sigma low power dual PLL LMX2486 — 1-GHz to 4.5-GHz delta-sigma low power dual PLL for RF personal communications LMX2487 — 1 to 6-GHz delta-sigma low power dual PLLatinum frequency synthesizer with 3.0-GHz integer PLL LMX2487E — 3-GHz to 7.5-GHz delta-sigma low power dual PLL for RF personal communications LMX2491 — 6.4-GHz low noise fractional-N PLL with ramp/chirp generation LMX2492 — 500MHz to 14GHz wideband, low noise fractional-N PLL with ramp/chirp generation LMX2492-Q1 — Automotive grade 500-MHz to 14-GHz wideband, low noise fractional-N PLL with ramp/chirp generation LMX2531 — High performance frequency synthesizer system with integrated VCO LMX2541 — Ultra-low noise PLLatinum frequency synthesizer with integrated VCO LMX2571 — 1.34-GHz, low-power, extreme-temperature RF synthesizer with frequency-shift keying (FSK) modulation LMX2571-EP — Enhanced-product, 1.34-GHz, low-power, extreme-temperature RF synthesizer with FSK modulation LMX2572 — 6.4-GHz low-power wideband RF synthesizer LMX2572LP — 2-GHz low power wideband RF synthesizer with FSK modulation LMX2581 — 3.76-GHz wideband frequency synthesizer with integrated VCO LMX2581E — 3.8-GHz wideband frequency synthesizer with integrated VCO LMX2582 — 5.5-GHz high performance, wideband PLLatinum RF synthesizer LMX2592 — 9.8-GHz wideband frequency synthesizer with integrated VCO LMX2594 — 15-GHz wideband PLLatinum™ RF synthesizer with phase synchronization and JESD204B support LMX2595 — 20-GHz wideband RF synthesizer with phase synchronization & JESD204B support LMX2820 — 22.6-GHz wideband RF synthesizer with phase synchronization, JESD and <5-µs frequency calibration LMX1205 — Low-noise, high-frequency buffer/multiplier/divider with JESD204 support and prog. clock delays LMX2624-SP — 5MHz to 28GHz space-grade wideband synthesizer with phase synchronization and JESD204B support
Hardware development
Evaluation board
LMK03806BEVAL — LMK03806B Evaluation Board LMK04208EVM — Two Input, 6+1 Output, Clock Jitter Cleaner With Dual Cascaded PLLs and Integrated 2.9 GHz VCO LMK04616EVM — LMK04616 Evaluation Module LMK04805BEVAL — Clock Jitter Cleaner With Dual Cascaded PLLs and Integrated 2.2 GHz VCO LMK04806BEVAL — Clock Jitter Cleaner With Dual Cascaded PLLs and Integrated 2.5 GHz VCO LMK04816BEVAL — Three Input, Thirteen Output, Clock Jitter Cleaner with Dual Cascaded PLLs and Integrated 2.5 GHz VC LMK04826BEVM — LMK04826BEVM Evaluation Module LMK04828BEVM — LMK04828 evaluation module LMK04832EVM — LMK04832 JESD204B Clock Jitter Cleaner/Clock Generator/Distribution Evaluation Module LMK04832SEPEVM — LMK04832-SEP evaluation module for ultra-low-noise, 3.2-GHz 15-output clock jitter clea LMK04906BEVAL — Three Input, Seven Output, Clock Jitter Cleaner with Dual Cascaded PLLs and Integrated 2.5 GHz VCO LMK5B33216EVM — LMK5B33216 evaluation module for 16-output, three DPLL and APLL, network synchronizer with BAW VCO LMX2571EPEVM — LMX2571-EP evaluation module for 1.34-GHz, low-power, extreme-temperature RF synthesizer LMX2582EVM — LMX2582EVM High Performance, Wideband Frequency PLLatinum RF Synthesizer With Integrated VCO LMX2592EVM — LMX2592EVM high-performance, wideband frequency RF synthesizer PLLATINUM™ integrated circuit LMX2594PSEVM — LMX2594 evaluation module for 15-GHz RF synthesizer with multiple-device phase synchronization XMICR-3P-LMX2492 — LMX2492 X-MWblock evaluation modules XMICR-3P-LMX2572 — LMX2572 X-MWblock evaluation modules XMICR-3P-LMX2592 — LMX2592 X-MWblock evaluation modules XMICR-3P-LMX2594 — LMX2594 X-MWblock evaluation modules XMICR-3P-LMX2595 — LMX2595 X-MWblock evaluation modules LMK04832EVM-CVAL — LMK04832-SP evaluation module for ultra-low-noise, dual-loop, JESD204B clock jitter cleaner LMK04368EPEVM — LMK04368-EP evaluation module for JESD204B/C dual-loop clock jitter cleaner LMK61E0MEVM — LMK61E0M Ultra-Low-Jitter Programmabler Oscillator Evaluation Module LMK61E2EVM — LMK61E2EVM Ultra-Low-Jitter Programmable Oscillator Evaluation Module LMX1204EVM — LMX1204 evaluation module for RF buffer, multiplier and divider with JESD204B/C SYSREF support LMX2594EVM — LMX2594EVM 15-GHz wideband RF synthesizer with phase synchronization & JESD204B evaluation module LMX2595EVM — 20-GHz Wideband RF Synthesizer With Phase Synchronization and JESD204B Evaluation Module LMX2615EVM-CVAL — Space grade synthesizer evaluation module LMX2694EPEVM — 15-GHz wideband RF synthesizer evaluation module LMX2572EVM — 6.4-GHz Low Power Wideband RF Synthesizer with Phase Synchronization and JESD204B Support LMX2572LPEVM — 2-GHz Low Power Wideband RF Synthesizer with FSK Modulation Evaluation Module LMX2581EVM — LMX2581 evaluation module LMX2820EVM — LMX2820 22.6-GHz wideband RF synthesizer evaluation module LMX8410LEVM — I/Q demodulator evaluation module LMK5B12212EVM — LMK5B12212 evaluation module LMK5B33414EVM — LMK5B33414 evaluation module for 14-output, three DPLL and APLL, network synchronizer with BAW VCO LMK5C33216AEVM — LMK5C33216A evaluation module LMK5C33216EVM — LMK5C33216 clock synchronizer DPLL 2 input 16 outputs evaluation module LMK5C33414AEVM — LMK5C33414A evaluation module LMK05028EVM — LMK05028 Network Clock Generator and Synchronizer Evaluation Module LMK05318BEVM — Network synchronizer clock evaluation module CDCI6214EVM — CDCI6214 Ultra-Low Power Clock Generator Evaluation Module CDCE6214-Q1EVM — 4 differential and 1 LVCMOS outputs clock generator evaluation module LMK3H0102EVM — LMK3H0102 evaluation module
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