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CDCLVD2108

ACTIVE

Low jitter, dual 1:8 universal-to-LVDS buffer

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Data sheet

CDCLVD2108

ACTIVE
Data sheet Order now

Product details

Function Differential Additive RMS jitter (typ) (fs) 171 Output frequency (max) (MHz) 800 Number of outputs 16 Output supply voltage (V) 2.5 Core supply voltage (V) 2.5 Output skew (ps) 50 Features Dual 1:8 fanout, Output enable control, Universal inputs Operating temperature range (°C) -40 to 85 Rating Catalog Output type LVDS Input type LVCMOS, LVDS, LVPECL
Function Differential Additive RMS jitter (typ) (fs) 171 Output frequency (max) (MHz) 800 Number of outputs 16 Output supply voltage (V) 2.5 Core supply voltage (V) 2.5 Output skew (ps) 50 Features Dual 1:8 fanout, Output enable control, Universal inputs Operating temperature range (°C) -40 to 85 Rating Catalog Output type LVDS Input type LVCMOS, LVDS, LVPECL
VQFN (RGZ) 48 49 mm² 7 x 7
  • Dual 1:8 Differential Buffer
  • Low Additive Jitter <300 fs RMS in
    10 kHz to 20 MHz
  • Low Within Bank Output Skew of 50 ps (Max)
  • Universal Inputs Accept LVDS, LVPECL, LVCMOS
  • One Input Dedicated for Eight Outputs
  • Total of 16 LVDS Outputs, ANSI EIA/TIA-644A
    Standard Compatible
  • Clock Frequency up to 800 MHz
  • 2.375–2.625V Device Power Supply
  • LVDS Reference Voltage, VAC_REF,
    Available for Capacitive Coupled Inputs
  • Industrial Temperature Range –40°C to 85°C
  • Packaged in 7mm × 7mm 48-Pin QFN (RGZ)
  • ESD Protection Exceeds 3 kV HBM, 1 kV CDM
  • APPLICATIONS
    • Telecommunications/Networking
    • Medical Imaging
    • Test and Measurement Equipment
    • Wireless Communications
    • General Purpose Clocking
  • Dual 1:8 Differential Buffer
  • Low Additive Jitter <300 fs RMS in
    10 kHz to 20 MHz
  • Low Within Bank Output Skew of 50 ps (Max)
  • Universal Inputs Accept LVDS, LVPECL, LVCMOS
  • One Input Dedicated for Eight Outputs
  • Total of 16 LVDS Outputs, ANSI EIA/TIA-644A
    Standard Compatible
  • Clock Frequency up to 800 MHz
  • 2.375–2.625V Device Power Supply
  • LVDS Reference Voltage, VAC_REF,
    Available for Capacitive Coupled Inputs
  • Industrial Temperature Range –40°C to 85°C
  • Packaged in 7mm × 7mm 48-Pin QFN (RGZ)
  • ESD Protection Exceeds 3 kV HBM, 1 kV CDM
  • APPLICATIONS
    • Telecommunications/Networking
    • Medical Imaging
    • Test and Measurement Equipment
    • Wireless Communications
    • General Purpose Clocking

The CDCLVD2108 clock buffer distributes two clock inputs (IN0, IN1) to a total of 16 pairs of differential LVDS clock outputs (OUT0, OUT15). Each buffer block consists of one input and 8 LVDS outputs. The inputs can either be LVDS, LVPECL, or LVCMOS.

The CDCLVD2108 is specifically designed for driving 50- transmission lines. In case of driving the inputs in single ended mode, the appropriate bias voltage (VAC_REF) should be applied to the unused negative input pin.

Using the control pin (EN) outputs can be either disabled or enabled. If the EN pin is left open all outputs are active, if switched to a logical "0" all outputs are disabled (static logical 0), if switched to a logical "1", OUT (8..15) are switched off and OUT (0..7) are active. The part supports a fail safe function. It incorporates an input hysteresis, which prevents random oscillation of the outputs in absence of an input signal.

The device operates in 2.5V supply environment and is characterized from –40°C to 85°C (ambient temperature). The CDCLVD2108 is packaged in small 48-pin, 7-mm × 7-mm QFN package.

The CDCLVD2108 clock buffer distributes two clock inputs (IN0, IN1) to a total of 16 pairs of differential LVDS clock outputs (OUT0, OUT15). Each buffer block consists of one input and 8 LVDS outputs. The inputs can either be LVDS, LVPECL, or LVCMOS.

The CDCLVD2108 is specifically designed for driving 50- transmission lines. In case of driving the inputs in single ended mode, the appropriate bias voltage (VAC_REF) should be applied to the unused negative input pin.

Using the control pin (EN) outputs can be either disabled or enabled. If the EN pin is left open all outputs are active, if switched to a logical "0" all outputs are disabled (static logical 0), if switched to a logical "1", OUT (8..15) are switched off and OUT (0..7) are active. The part supports a fail safe function. It incorporates an input hysteresis, which prevents random oscillation of the outputs in absence of an input signal.

The device operates in 2.5V supply environment and is characterized from –40°C to 85°C (ambient temperature). The CDCLVD2108 is packaged in small 48-pin, 7-mm × 7-mm QFN package.
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Type Title Date
* Data sheet Dual 1:8 Low Additive Jitter LVDS Buffer datasheet (Rev. C) 21 Dec 2010

Design & development

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Evaluation board

CDCLVD2106EVM — CDCLVD2106 Evaluation Module

The CDCLVD1212/CDCLVD2106 are high-performance, low-additive jitter clock buffers. They have two universal input buffers that support single-ended or differential clock inputs and are selectable through a control pin (for CDCLVD1212 only). The devices also feature on-chip bias generators that can (...)
User guide: PDF
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Simulation model

CDCLVD2108 IBIS Model (Rev. B)

SLLM096B.ZIP (15 KB) - IBIS Model
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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 (RGZ) 48 View options
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