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CDCDB400

ACTIVE

4-output clock buffer for PCIe® Gen 1 to Gen 6

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Data sheet

CDCDB400

ACTIVE
Data sheet Order now

Product details

Function Clock buffer, Differential Additive RMS jitter (typ) (fs) 38 Output frequency (max) (MHz) 250 Number of outputs 4 Output supply voltage (V) 3.3 Core supply voltage (V) 3.3 Output skew (ps) 50 Features 1:4 fanout, Individual output enable control, OE# control, PCIe Gen 1-5 compliant, SMBus control Operating temperature range (°C) -40 to 105 Rating Catalog Output type LP-HCSL Input type LP-HCSL
Function Clock buffer, Differential Additive RMS jitter (typ) (fs) 38 Output frequency (max) (MHz) 250 Number of outputs 4 Output supply voltage (V) 3.3 Core supply voltage (V) 3.3 Output skew (ps) 50 Features 1:4 fanout, Individual output enable control, OE# control, PCIe Gen 1-5 compliant, SMBus control Operating temperature range (°C) -40 to 105 Rating Catalog Output type LP-HCSL Input type LP-HCSL
VQFN (RHB) 32 25 mm² 5 x 5
  • 4 LP-HCSL outputs with programmable integrated 85-Ω (default) or 100-Ω differential output terminations
  • 4 hardware output enable (OE#) controls
  • Additive phase jitter after PCIE Gen 6 filter: 20 fs, RMS (maximum)
  • Additive phase jitter after PCIE Gen 5 filter: 25 fs, RMS (maximum)
  • Additive phase jitter after DB2000Q filter: 38 fs, RMS (maximum)
  • Supports Common Clock (CC) and Individual Reference (IR) architectures
    • Spread spectrum-compatible
  • Output-to-output skew: < 50 ps
  • Input-to-output delay: < 3 ns

  • Fail-safe input

  • Programmable output slew rate control

  • 3 selectable SMBus addresses

  • 3.3-V core and IO supply voltages
  • Hardware-controlled low power mode (PD#)
  • Current consumption: 46 mA maximum
  • 5-mm × 5-mm, 32-pin VQFN package
  • 4 LP-HCSL outputs with programmable integrated 85-Ω (default) or 100-Ω differential output terminations
  • 4 hardware output enable (OE#) controls
  • Additive phase jitter after PCIE Gen 6 filter: 20 fs, RMS (maximum)
  • Additive phase jitter after PCIE Gen 5 filter: 25 fs, RMS (maximum)
  • Additive phase jitter after DB2000Q filter: 38 fs, RMS (maximum)
  • Supports Common Clock (CC) and Individual Reference (IR) architectures
    • Spread spectrum-compatible
  • Output-to-output skew: < 50 ps
  • Input-to-output delay: < 3 ns

  • Fail-safe input

  • Programmable output slew rate control

  • 3 selectable SMBus addresses

  • 3.3-V core and IO supply voltages
  • Hardware-controlled low power mode (PD#)
  • Current consumption: 46 mA maximum
  • 5-mm × 5-mm, 32-pin VQFN package

The CDCDB400 is a 4-output LP-HCSL, DB800ZL-compliant, clock buffer capable of distributing the reference clock for PCIe Gen 1-6, QuickPath Interconnect (QPI), UPI, SAS, and SATA interfaces in CC, SRNS, or SRIS architectures. The SMBus interface and four output enable pins allow the configuration and control of all four outputs individually. The CDCDB400 is a DB800ZL derivative buffer and meets or exceeds the system parameters in the DB800ZL specification. The device also meets or exceeds the parameters in the DB2000Q specification. The CDCDB400 is packaged in a 5-mm × 5-mm, 32-pin VQFN package.

The CDCDB400 is a 4-output LP-HCSL, DB800ZL-compliant, clock buffer capable of distributing the reference clock for PCIe Gen 1-6, QuickPath Interconnect (QPI), UPI, SAS, and SATA interfaces in CC, SRNS, or SRIS architectures. The SMBus interface and four output enable pins allow the configuration and control of all four outputs individually. The CDCDB400 is a DB800ZL derivative buffer and meets or exceeds the system parameters in the DB800ZL specification. The device also meets or exceeds the parameters in the DB2000Q specification. The CDCDB400 is packaged in a 5-mm × 5-mm, 32-pin VQFN package.
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* Data sheet CDCDB400 DB800ZL-Compliant 4-Output Clock Buffer for PCIe Gen 1 to Gen 6 datasheet (Rev. A) PDF | HTML 23 May 2022

Design & development

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Evaluation board

CDCDB800EVM — CDCDB800 evaluation module is an 8-output LP-HCSL clock buffer for PCIe® Gen 1 to Gen 5 application

CDCDB800 evaluation module is an 8-output LP-HCSL, DB800ZL compliant, clock buffer capable of distributing the reference clock for PCIe® Gen 1 to Gen 5 application, QuickPath Interconnect (QPI), UPI, SAS, and SATA interfaces. The SMBus interface and eight outputs enable pins to allow the (...)
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PLLATINUMSIM-SW — PLLatinum Sim Tool

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Supported products & hardware

Supported products & hardware

Products
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Clock generators
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
Clock jitter cleaners
LMK04208 — Ultra low-noise clock jitter cleaner with 6 programmable outputs LMK04368-EP — Enhanced product ultra-low-noise 3.2-GHz JESD204C 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 LMK04805 — Low-noise clock jitter cleaner with dual cascaded PLLs and integrated 2.2-GHz VCO LMK04806 — Low-noise clock jitter cleaner with dual cascaded PLLs and integrated 2.5-GHz VCO LMK04808 — Low-noise clock jitter cleaner with dual loop PLLs and integrated 2.9-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 LMK04906 — Ultra low noise clock jitter cleaner/multiplier with 6 programmable outputs
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 LMK05318B-Q1 — Automotive ultra-low jitter network synchronizer and clock generator 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 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 & microwave
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 LMX1906-SP — Radiation-hardness-assured (RHA) 15GHz buffer, multiplier and divider with SYSREF and FPGA clock LMX2430 — 3.0-GHz/0.8-GHz PLLatinum dual high frequency synthesizer for RF personal communications LMX2433 — 3.6-GHz/1.7-GHz PLLatinum dual high frequency synthesizer for RF personal communications LMX2434 — 5.0-GHz/2.5-GHz PLLatinum low power dual frequency synthesizer for RF personal communications LMX2470 — 2.6-GHz delta-sigma fractional-N PLL with 800-MHz integer-N PLL 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 LMX2615-SP — Space grade 40-MHz to 15-GHz wideband synthesizer with phase synchronization and JESD204B support LMX2694-EP — Enhanced product 15-GHz RF synthesizer with phase synchronization LMX8410L — High-Performance Mixer With Integrated Synthesizer TRF3765 — 300M-4800MHz Low Noise Integer-N/Fractional-N PLL with Integrated VCO and up to 8 Outputs
Hardware development
Evaluation board
LMK04832EVM — LMK04832 JESD204B Clock Jitter Cleaner/Clock Generator/Distribution Evaluation Module LMX2571EPEVM — LMX2571-EP evaluation module for 1.34-GHz, low-power, extreme-temperature RF synthesizer 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
Software
Application software & framework
TICSPRO-SW — Texas Instruments Clocks and Synthesizers (TICS) Pro Software
IDE, configuration, compiler or debugger
CODELOADER — CodeLoader Software for device register programming
Support software
LMX9830-SW — LMX9830 Application Notes, Software, and Tools LMX9838-SW — LMX9838 Application Notes, Software, and Tools
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VQFN (RHB) 32 Ultra Librarian
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