Produktdetails

Frequency (max) (MHz) 12800 Frequency (min) (MHz) 300 Features Integrated multiplier and divider modes, JESD204B/C SYSREF support, Phase synchronization, RF clock distribution, Radiation hardened, Ultra-low additive jitter Current consumption (mA) 405 Integrated VCO No Operating temperature range (°C) -55 to 125 Rating Space Lock time (µs) (typ) (s) Loop BW dependent
Frequency (max) (MHz) 12800 Frequency (min) (MHz) 300 Features Integrated multiplier and divider modes, JESD204B/C SYSREF support, Phase synchronization, RF clock distribution, Radiation hardened, Ultra-low additive jitter Current consumption (mA) 405 Integrated VCO No Operating temperature range (°C) -55 to 125 Rating Space Lock time (µs) (typ) (s) Loop BW dependent
HTQFP (PAP) 64 144 mm² 12 x 12
  • VID #V62/24630
    • Total ionizing dose 30krad (ELDRS-free)
    • Single event latch-up (SEL) immune up to 43MeV - cm2 /mg
    • Single event functional interrupt (SEFI) immune up to 43MeV - cm2 /mg
  • Clock buffer for 300MHz to 15GHz frequency
  • Ultra-Low Noise
    • Noise floor of –159dBc/Hz at 6GHz output
    • 36-fs additive jitter (100Hz to fCLK) at 6GHz output
    • 5fs additive jitter (100Hz - 100MHz)
  • 4 high-frequency clocks with corresponding SYSREF outputs
    • Shared divide by 1 (Buffer), 2, 3, 4, 5, and 7
    • Shared programmable multiplier x2, x3, and x4
  • Support pin mode options to configure the device without SPI
  • LOGICLK output with corresponding SYSREF output
    • On separate divide bank
    • 1, 2, 4 pre-divider
    • 1 (bypass), 2, …, 1023 post divider
  • 8 programmable output power levels
  • Synchronized SYSREF clock outputs
    • 508 delay step adjustments of less than 2.5ps each at 12.8GHz
    • Generator and repeater modes
    • Windowing feature for SYSREFREQ pins to optimize timing
  • SYNC feature to all divides and multiple devices
  • 2.5V operating voltage
  • –55ºC to 125ºC operating temperature
  • High Reliability
    • Controlled Baseline
    • One Assembly/Test Site
    • One Fabrication Site
    • Extended Product Life Cycle
    • Product Traceability
  • VID #V62/24630
    • Total ionizing dose 30krad (ELDRS-free)
    • Single event latch-up (SEL) immune up to 43MeV - cm2 /mg
    • Single event functional interrupt (SEFI) immune up to 43MeV - cm2 /mg
  • Clock buffer for 300MHz to 15GHz frequency
  • Ultra-Low Noise
    • Noise floor of –159dBc/Hz at 6GHz output
    • 36-fs additive jitter (100Hz to fCLK) at 6GHz output
    • 5fs additive jitter (100Hz - 100MHz)
  • 4 high-frequency clocks with corresponding SYSREF outputs
    • Shared divide by 1 (Buffer), 2, 3, 4, 5, and 7
    • Shared programmable multiplier x2, x3, and x4
  • Support pin mode options to configure the device without SPI
  • LOGICLK output with corresponding SYSREF output
    • On separate divide bank
    • 1, 2, 4 pre-divider
    • 1 (bypass), 2, …, 1023 post divider
  • 8 programmable output power levels
  • Synchronized SYSREF clock outputs
    • 508 delay step adjustments of less than 2.5ps each at 12.8GHz
    • Generator and repeater modes
    • Windowing feature for SYSREFREQ pins to optimize timing
  • SYNC feature to all divides and multiple devices
  • 2.5V operating voltage
  • –55ºC to 125ºC operating temperature
  • High Reliability
    • Controlled Baseline
    • One Assembly/Test Site
    • One Fabrication Site
    • Extended Product Life Cycle
    • Product Traceability

The LMX1860-SEP is an buffer, divider and multiplier that features high frequency, ultra-low jitter, and SYSREF outputs. This device combined with an ultra-low noise reference clock source is an exemplary design for clocking data converters, especially when sampling above 3GHz. Each of the 4 high frequency clock outputs and additional LOGICLK output is paired with a SYSREF output clock signal. The SYSREF signal for JESD interfaces can either be internally generated or passed in as an input and re-clocked to the device clocks. This device can distribute the multichannel, low skew, ultra-low noise local oscillator signals to multiple mixers by disabling the SYSREF outputs.

The LMX1860-SEP is an buffer, divider and multiplier that features high frequency, ultra-low jitter, and SYSREF outputs. This device combined with an ultra-low noise reference clock source is an exemplary design for clocking data converters, especially when sampling above 3GHz. Each of the 4 high frequency clock outputs and additional LOGICLK output is paired with a SYSREF output clock signal. The SYSREF signal for JESD interfaces can either be internally generated or passed in as an input and re-clocked to the device clocks. This device can distribute the multichannel, low skew, ultra-low noise local oscillator signals to multiple mixers by disabling the SYSREF outputs.

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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Datum
* Data sheet LMX1860-SEP Space Grade Low-Noise, High-Frequency JESD204B/C Buffer, Multiplier and Divider datasheet (Rev. A) PDF | HTML 20 Mai 2025
* Radiation & reliability report LMX1860-SEP Process Flow and Reliability Report (Rev. A) PDF | HTML 05 Aug 2024
* Radiation & reliability report LMX1860-SEP Single-Event Effects Report PDF | HTML 03 Apr 2024
* Radiation & reliability report LMX1860-SEP Total Ionizing Dose (TID) Radiation Report 03 Apr 2024
Application note Practical Clocking Considerations That Give Your Next High-Speed Converter Design an Edge (Rev. A) PDF | HTML 11 Apr 2025

Design und Entwicklung

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Evaluierungsplatine

LMX1860SEPEVM — LMX1860-SEP – Evaluierungsmodul

Das LMX1860-Evaluierungsmodul (EVM) ist zur Auswertung der Leistung des LMX1860-SEP ausgelegt, eines Radiofrequenz-Puffers (HF), -Teilers und -Multiplikators mit vier Ausgängen und extrem geringem additiven Jitter. Dieses EVM kann RF-Takteingänge bis zu 18 GHz puffern, x2, x3 oder x4 im (...)

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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.

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