CDCLVP1204 Low Jitter, 2-Input Selectable 1:4 Universal-to-LVPECL Buffer | TI.com

CDCLVP1204
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Low Jitter, 2-Input Selectable 1:4 Universal-to-LVPECL Buffer

 

Recommended alternative parts

  • LMK00304  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   Ultra low additive jitter,1:4 Universal Differential Buffer that can support LVPECL

Description

The CDCLVP1204 is a highly versatile, low additive jitter buffer that can generate four 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 CDCLVP1204 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 15 ps, making the device a perfect choice for use in demanding applications.

The CDCLVP1204 clock buffer distributes one of two selectable clock inputs (IN0, IN1) to four pairs of differential LVPECL clock outputs (OUT0, OUT3) with minimum skew for clock distribution. The CDCLVP1204 can accept two clock sources into an input multiplexer. The inputs can be LVPECL, LVDS, or LVCMOS/LVTTL.

The CDCLVP1204 is specifically designed for driving 50-Ω transmission lines. When driving the inputs in single-ended mode, the LVPECL bias voltage (VAC_REF) must be applied to the unused negative input terminal. However, for high-speed performance up to 2 GHz, differential mode is strongly recommended.

The CDCLVP1204 is characterized for operation from –40°C to +85°C.

Features

  • 2:4 Differential Buffer
  • Selectable Clock Inputs Through Control Terminal
  • Universal Inputs Accept LVPECL, LVDS, and
    LVCMOS/LVTTL
  • Four LVPECL Outputs
  • Maximum Clock Frequency: 2 GHz
  • Maximum Core Current Consumption: 45 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: 15 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 at
    Thermal Pad)
  • ESD Protection Exceeds 2 kV (HBM)

Design with CDCLVP1204

Frequency Number of Outputs
 MHz
Output Format

Parametrics

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Part number Order Function Additive RMS jitter (Typ) (fs) Output frequency (Max) (MHz) Number of outputs VCC out (V) VCC core (V) Features Operating temperature range (C) Rating Output type Package Group Package size: mm2:W x L (PKG) Input type
CDCLVP1204 Order now Differential     57     2000     4     2.5
3.3    
2.5
3.3    
  -40 to 85     Catalog     LVPECL     VQFN | 16     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)     LVCMOS
LVDS
LVPECL    
CDCLVP1102 Order now Differential     90     2000     2     2.5
3.3    
2.5
3.3    
  -40 to 85     Catalog     LVPECL     VQFN | 16     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)     LVCMOS
LVDS
LVPECL    
CDCLVP1208 Order now Differential     57     2000     8     2.5
3.3    
    -40 to 85     Catalog     LVPECL     VQFN | 28     28VQFN: 25 mm2: 5 x 5 (VQFN | 28)     LVCMOS
LVDS
LVPECL    
CDCLVP1212 Order now Differential     57     2000     12     2.5
3.3    
2.5
3.3    
  -40 to 85     Catalog     LVPECL     VQFN | 40     40VQFN: 36 mm2: 6 x 6 (VQFN | 40)     LVCMOS
LVDS
LVPECL    
CDCLVP1216 Order now Differential     57     2000     16     2.5
3.3    
2.5
3.3    
  -40 to 85     Catalog     LVPECL     VQFN | 48     48VQFN: 49 mm2: 7 x 7 (VQFN | 48)     LVCMOS
LVDS
LVPECL    
CDCLVP2102 Samples not available Differential     89     2000     4     2.5
3.3    
2.5
3.3    
  -40 to 85     Catalog     LVPECL     VQFN | 16     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)     LVCMOS
LVDS
LVPECL    
CDCLVP2104 Samples not available Differential     89     2000     8     2.5
3.3    
2.5
3.3    
  -40 to 85     Catalog     LVPECL     VQFN | 28     28VQFN: 25 mm2: 5 x 5 (VQFN | 28)     LVCMOS
LVDS
LVPECL    
CDCLVP2106 Samples not available Differential     124     2000     12