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CDCLVP1208

ACTIVE

Low jitter, 2-input selectable 1:8 universal-to-LVPECL buffer

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Data sheet

CDCLVP1208

ACTIVE
Data sheet Order now

Product details

Function Differential Additive RMS jitter (typ) (fs) 57 Output frequency (max) (MHz) 2000 Number of outputs 8 Output supply voltage (V) 2.5, 3.3 Core supply voltage (V) 2.5, 3.3 Output skew (ps) 20 Features 2:8 fanout Operating temperature range (°C) -40 to 85 Rating Catalog Output type LVPECL Input type LVCMOS, LVDS, LVPECL
Function Differential Additive RMS jitter (typ) (fs) 57 Output frequency (max) (MHz) 2000 Number of outputs 8 Output supply voltage (V) 2.5, 3.3 Core supply voltage (V) 2.5, 3.3 Output skew (ps) 20 Features 2:8 fanout Operating temperature range (°C) -40 to 85 Rating Catalog Output type LVPECL Input type LVCMOS, LVDS, LVPECL
VQFN (RHD) 28 25 mm² 5 x 5
  • 2:8 Differential Buffer
  • Selectable Clock Inputs Through Control terminal
  • Universal Inputs Accept LVPECL, LVDS, and
    LVCMOS/LVTTL
  • Eight LVPECL Outputs
  • Maximum Clock Frequency: 2 GHz
  • Maximum Core Current Consumption: 73 mA
  • Very Low Additive Jitter: <100 fs,rms in 10 kHz to
    20 MHz Offset Range:
    • 57 fs, rms (typical) at 122.88 MHz
    • 48 fs, rms (typical) at 156.25 MHz
    • 30 fs, rms (typical) at 312.5 MHz
  • 2.375-V to 3.6-V Device Power Supply
  • Maximum Propagation Delay: 450 ps
  • Maximum Output Skew: 20 ps
  • LVPECL Reference Voltage, VAC_REF, Available
    for Capacitive-Coupled Inputs
  • Industrial Temperature Range: –40°C to 85°C
  • Supports 105°C PCB Temperature
    (Measured with a Thermal Pad)
  • ESD Protection Exceeds 2 kV (HBM)
  • Available in 5-mm × 5-mm QFN-28 (RHD)
    Package
  • 2:8 Differential Buffer
  • Selectable Clock Inputs Through Control terminal
  • Universal Inputs Accept LVPECL, LVDS, and
    LVCMOS/LVTTL
  • Eight LVPECL Outputs
  • Maximum Clock Frequency: 2 GHz
  • Maximum Core Current Consumption: 73 mA
  • Very Low Additive Jitter: <100 fs,rms in 10 kHz to
    20 MHz Offset Range:
    • 57 fs, rms (typical) at 122.88 MHz
    • 48 fs, rms (typical) at 156.25 MHz
    • 30 fs, rms (typical) at 312.5 MHz
  • 2.375-V to 3.6-V Device Power Supply
  • Maximum Propagation Delay: 450 ps
  • Maximum Output Skew: 20 ps
  • LVPECL Reference Voltage, VAC_REF, Available
    for Capacitive-Coupled Inputs
  • Industrial Temperature Range: –40°C to 85°C
  • Supports 105°C PCB Temperature
    (Measured with a Thermal Pad)
  • ESD Protection Exceeds 2 kV (HBM)
  • Available in 5-mm × 5-mm QFN-28 (RHD)
    Package

The CDCLVP1208 is a highly versatile, low additive jitter buffer that can generate eight copies of LVPECL clock outputs from one of two selectable LVPECL, LVDS, or LVCMOS inputs for a variety of communication applications. It has a maximum clock frequency up to 2 GHz. The CDCLVP1208 features an on-chip multiplexer (MUX) for selecting one of two inputs that can be easily configured solely through a control terminal. The overall additive jitter performance is less than 0.1 ps, RMS from 10 kHz to 20 MHz, and overall output skew is as low as 20 ps, making the device a perfect choice for use in demanding applications.

The CDCLVP1208 clock buffer distributes one of two selectable clock inputs (IN0, IN1) to eight pairs of differential LVPECL clock outputs (OUT0, OUT7) with minimum skew for clock distribution. The CDCLVP1208 can accept two clock sources into an input multiplexer. The inputs can be LVPECL, LVDS, or LVCMOS/LVTTL.

The CDCLVP1208 is specifically designed for driving 50-Ω transmission lines. When driving the inputs in single-ended mode, the LVPECL bias voltage (VAC_REF) should be applied to the unused negative input terminal. However, for high-speed performance up to 2 GHz, differential mode is strongly recommended.

The CDCLVP1208 is packaged in a small 28-pin, 5-mm × 5-mm QFN package and is characterized for operation from –40°C to 85°C.

The CDCLVP1208 is a highly versatile, low additive jitter buffer that can generate eight copies of LVPECL clock outputs from one of two selectable LVPECL, LVDS, or LVCMOS inputs for a variety of communication applications. It has a maximum clock frequency up to 2 GHz. The CDCLVP1208 features an on-chip multiplexer (MUX) for selecting one of two inputs that can be easily configured solely through a control terminal. The overall additive jitter performance is less than 0.1 ps, RMS from 10 kHz to 20 MHz, and overall output skew is as low as 20 ps, making the device a perfect choice for use in demanding applications.

The CDCLVP1208 clock buffer distributes one of two selectable clock inputs (IN0, IN1) to eight pairs of differential LVPECL clock outputs (OUT0, OUT7) with minimum skew for clock distribution. The CDCLVP1208 can accept two clock sources into an input multiplexer. The inputs can be LVPECL, LVDS, or LVCMOS/LVTTL.

The CDCLVP1208 is specifically designed for driving 50-Ω transmission lines. When driving the inputs in single-ended mode, the LVPECL bias voltage (VAC_REF) should be applied to the unused negative input terminal. However, for high-speed performance up to 2 GHz, differential mode is strongly recommended.

The CDCLVP1208 is packaged in a small 28-pin, 5-mm × 5-mm QFN package and is characterized for operation from –40°C to 85°C.
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Type Title Date
* Data sheet CDCLVP1208 Eight LVPECL Output, High-Performance Clock 2:8 Buffer datasheet (Rev. E) PDF | HTML 23 Nov 2015
User guide CDCLVP1208 User's Guide 21 Oct 2009

Design & development

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

Evaluation board

CDCLVP1208EVM — CDCLVP1208 Evaluation Module

The CDCLVP1208 is a high-performance, low additive phase noise clock buffer. It has two universal input buffers that support either single-ended or differential clock inputs, selectable through a control pin. The device also features on-chip bias generators that can provide the LVPECL (...)
User guide: PDF
Not available on TI.com
Simulation model

CDCLVPxxxx IBIS Model (Rev. B)

SLLM056B.ZIP (40 KB) - IBIS Model
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Design tool

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Design tool

PLLATINUMSIM-SW — PLLatinum Sim Tool

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Supported products & hardware

Supported products & hardware

Products
Clock buffers
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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 LMK3C0105 — 5 output reference-less clock generator with bulk acoustic wave (BAW) LMK3C0105-Q1 — Automotive, 5 output reference-less clock generator with bulk acoustic wave (BAW) LMK3H0102 — Bulk acoustic wave (BAW)-based PCIe Gen 1 to Gen 7-compliant referenceless clock generator LMK3H0102-Q1 — Automotive PCIe gen 7 compliant, reference-less clock generator with bulk acoustic wave (BAW) LMK3H2104 — 4-output, PCIe Gen 1 to Gen 7 compliant, BAW reference-less clock generator, clock mux and buffer LMK3H2108 — 8-output, PCIe Gen 1 to Gen 7 compliant, BAW reference-less clock generator, clock mux and buffer
Clock jitter cleaners
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
Oscillators
LMK60A0-148351 — 148.352-MHz, LVDS, high-performance, low jitter, differential oscillator LMK60A0-148M — 148.5-MHz, LVDS, high-performance, low jitter, differential oscillator LMK60E0-156257 — 156.257-MHz, LVPECL, ±25 ppm, high-performance, low-jitter oscillator LMK60E0-156M — 156.5-MHz, LVPECL, ±25 ppm, high-performance, low-jitter oscillator LMK60E0-212M — 212.5-MHz, LVPECL, ±25 ppm, high-performance, low-jitter oscillator LMK60E2-100M — 100.0-MHz, LVPECL, ±50 ppm, high-performance, low-jitter oscillator LMK60E2-125M — 125-MHz, LVPECL, ±50 ppm, high-performance, low-jitter oscillator LMK60E2-150M — 150-MHz, LVPECL, ±50 ppm, low jitter, standard oscillator LMK60E2-156M — 156.25-MHz, LVPECL, ±50 ppm, high-performance, low-jitter oscillator LMK60I2-100M — 100-MHz, HCSL, ±50 ppm, high-performance, low-jitter oscillator LMK60I2-322M — 322.27-MHz, HCSL, ±50 ppm, high-performance, low-jitter oscillator LMK61A2-100M — 100-MHz, ±50 ppm, LVDS ultra-low jitter standard differential oscillator LMK61A2-125M — 125-MHz, ±50 ppm, LVDS ultra-low jitter standard differential oscillator LMK61A2-156M — 156.25-MHz, ±50 ppm, LVDS ultra-low jitter standard differential oscillator LMK61A2-312M — 312.5-MHz, ±50 ppm, LVDS ultra-low jitter standard differential oscillator LMK61A2-644M — LVDS ultra-low jitter programmable oscillator with internal EEPROM LMK61E0-050M — 50-MHz, LVPECL ±25 ppm, ultra-low jitter, standard differential oscillator LMK61E0-155M — 155.52-MHz, LVPECL ±25 ppm, ultra-low jitter, standard differential oscillator LMK61E0-156M — 156.25-MHz, ±25 ppm, LVPECL ultra-low jitter standard differential oscillator LMK61E07 — Multi-signal format, ultra-low jitter programmable oscillator with internal EEPROM LMK61E08 — Ultra-low jitter programmable oscillator with internal EEPROM LMK61E0M — LVCMOS ultra-low jitter programmable oscillator with internal EEPROM LMK61E2 — Ultra-low jitter, EEPROM programmable oscillator for medical imaging and test and measurement LMK61E2-100M — 100-MHz, ±50 ppm, LVPECL ultra-low jitter standard differential oscillator LMK61E2-125M — 125-MHz, ±50 ppm, LVPECL ultra-low jitter standard differential oscillator LMK61E2-156M — 156.25-MHz, ±50 ppm, LVPECL ultra-low jitter standard differential oscillator LMK61E2-312M — 312.5-MHz, ±50 ppm, LVPECL ultra-low jitter standard differential oscillator LMK61I2-100M — 100-MHz, ±50 ppm, HCSL ultra-low jitter standard differential oscillator LMK61PD0A2 — ±50 ppm, ultra-low jitter, pin selectable, differential oscillator LMK62A2-100M — 100-MHz, LVDS ±50 ppm, high-performance, low-jitter, standard oscillator LMK62A2-150M — 150-MHz, LVDS ±50 ppm, high-performance, low-jitter, standard oscillator LMK62A2-156M — 156.25-MHz, LVDS ±50 ppm, high-performance, low-jitter oscillator LMK62A2-200M — 200-MHz, LVDS ±50 ppm, high-performance, low-jitter, standard oscillator LMK62A2-266M — 266.66-MHz, LVDS ±50 ppm, high-performance, low-jitter, standard oscillator LMK62E0-156M — 156.25-MHz, LVPECL, ±25 ppm, high-performance, low-jitter oscillator LMK62E2-100M — 100-MHz, LVPECL, ±50 ppm, high-performance, low-jitter oscillator LMK62E2-156M — 156.25-MHz, LVPECL, ±50 ppm, high-performance, low jitter, standard oscillator LMK62I0-100M — 100-MHz, HCSL, ±25 ppm, high-performance, low-jitter oscillator LMK62I0-156M — 156.25-MHz, HCSL, ±25 ppm, high-performance, low-jitter oscillator LMK6C — Low-jitter, high-performance, bulk-acoustic-wave (BAW) fixed-frequency LVCMOS oscillator LMK6D — Low-jitter, high-performance, bulk-acoustic-wave (BAW) fixed-frequency LVDS oscillator LMK6H — Low-jitter, high-performance, bulk-acoustic-wave (BAW) fixed-frequency HCSL oscillator LMK6P — Low-jitter, high-performance, bulk-acoustic-wave (BAW) fixed-frequency LVPECL oscillator
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
Support software
LMX9830-SW — LMX9830 Application Notes, Software, and Tools LMX9838-SW — LMX9838 Application Notes, Software, and Tools
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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VQFN (RHD) 28 Ultra Librarian
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