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CDCLVP1212

ACTIVE

Low jitter, 2-input selectable 1:12 universal-to-LVPECL buffer

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Data sheet

CDCLVP1212

ACTIVE
Data sheet Order now

Product details

Function Differential Additive RMS jitter (typ) (fs) 57 Output frequency (max) (MHz) 2000 Number of outputs 12 Output supply voltage (V) 2.5, 3.3 Core supply voltage (V) 2.5, 3.3 Output skew (ps) 25 Features 2:12 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 12 Output supply voltage (V) 2.5, 3.3 Core supply voltage (V) 2.5, 3.3 Output skew (ps) 25 Features 2:12 fanout Operating temperature range (°C) -40 to 85 Rating Catalog Output type LVPECL Input type LVCMOS, LVDS, LVPECL
VQFN (RHA) 40 36 mm² 6 x 6
  • 2:12 Differential Buffer
  • Selectable Clock Inputs Through Control Terminal
  • Universal Inputs Accept LVPECL, LVDS, and
    LVCMOS/LVTTL
  • 12 LVPECL Outputs
  • Maximum Clock Frequency: 2 GHz
  • Maximum Core Current Consumption: 88 mA
  • Very Low Additive Jitter: <100 fs, rms in 10-kHz to
    20-MHz Offset Range:
    • 57 fs, rms (typ) @ 122.88 MHz
    • 48 fs, rms (typ) @ 156.25 MHz
    • 30 fs, rms (typ) @ 312.5 MHz
  • 2.375-V to 3.6-V Device Power Supply
  • Maximum Propagation Delay: 550 ps
  • Maximum Output Skew: 25 ps
  • LVPECL Reference Voltage, VAC_REF, Available
    for Capacitive-Coupled Inputs
  • Industrial Temperature Range: –40°C to 85°C
  • ESD Protection Exceeds 2 kV (HBM)
  • Supports 105°C PCB Temperature (Measured
    with a Thermal Pad)
  • Available in 6-mm × 6-mm QFN-40 (RHA) Package
  • 2:12 Differential Buffer
  • Selectable Clock Inputs Through Control Terminal
  • Universal Inputs Accept LVPECL, LVDS, and
    LVCMOS/LVTTL
  • 12 LVPECL Outputs
  • Maximum Clock Frequency: 2 GHz
  • Maximum Core Current Consumption: 88 mA
  • Very Low Additive Jitter: <100 fs, rms in 10-kHz to
    20-MHz Offset Range:
    • 57 fs, rms (typ) @ 122.88 MHz
    • 48 fs, rms (typ) @ 156.25 MHz
    • 30 fs, rms (typ) @ 312.5 MHz
  • 2.375-V to 3.6-V Device Power Supply
  • Maximum Propagation Delay: 550 ps
  • Maximum Output Skew: 25 ps
  • LVPECL Reference Voltage, VAC_REF, Available
    for Capacitive-Coupled Inputs
  • Industrial Temperature Range: –40°C to 85°C
  • ESD Protection Exceeds 2 kV (HBM)
  • Supports 105°C PCB Temperature (Measured
    with a Thermal Pad)
  • Available in 6-mm × 6-mm QFN-40 (RHA) Package

The CDCLVP1212 is a highly versatile, low additive jitter buffer that can generate 12 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 CDCLVP1212 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 25 ps, making the device a perfect choice for use in demanding applications.

The CDCLVP1212 clock buffer distributes one of two selectable clock inputs (IN0, IN1) to 12 pairs of differential LVPECL clock outputs (OUT0, OUT11) with minimum skew for clock distribution. The CDCLVP1212 can accept two clock sources into an input multiplexer. The inputs can be LVPECL, LVDS, or LVCMOS/LVTTL.

The CDCLVP1212 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 CDCLVP1212 is packaged in a small 40-terminal, 6-mm × 6-mm QFN package and is characterized for operation from –40°C to 85°C.

The CDCLVP1212 is a highly versatile, low additive jitter buffer that can generate 12 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 CDCLVP1212 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 25 ps, making the device a perfect choice for use in demanding applications.

The CDCLVP1212 clock buffer distributes one of two selectable clock inputs (IN0, IN1) to 12 pairs of differential LVPECL clock outputs (OUT0, OUT11) with minimum skew for clock distribution. The CDCLVP1212 can accept two clock sources into an input multiplexer. The inputs can be LVPECL, LVDS, or LVCMOS/LVTTL.

The CDCLVP1212 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 CDCLVP1212 is packaged in a small 40-terminal, 6-mm × 6-mm QFN package and is characterized for operation from –40°C to 85°C.
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LMK00301 ACTIVE 3-GHz, 10-output differential fanout buffer / level translator Ultra low additive jitter,1:10 universal differential buffer that can support LVPECL
LMK1D1212 ACTIVE 12-channel output 1.8-V, 2.5-V, and 3.3-V LVDS buffer Same pinout with wider supported voltage range and LVPECL vs LVDS

Technical documentation

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Type Title Date
* Data sheet CDCLVP1212 LVPECL Output, High-Performance Clock Buffer datasheet (Rev. E) PDF | HTML 02 Dec 2015
Application note Clocking Design Guidelines: Unused Pins 19 Nov 2015
EVM User's guide Low Additive Phase Noise Clock Buffer Evaluation Board 25 Aug 2009

Design & development

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Simulation model

CDCLVPxxxx IBIS Model (Rev. B)

SLLM056B.ZIP (40 KB) - IBIS Model
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Supported products & hardware

Supported products & hardware

Products
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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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