- 制造厂商：TI
- 产品类别：时钟和计时
- 技术类目：时钟缓冲器
- 功能描述：低抖动 2 路输入可选 1:8 通用至 LVPECL 缓冲器
- 点击这里打开及下载CDCLVP1208的技术文档资料
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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.
- 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
- 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
CDCLVP1208的完整型号有：CDCLVP1208RHDR、CDCLVP1208RHDT，以下是这些产品的关键参数及官网采购报价：
CDCLVP1208RHDR，工作温度：-40 to 85，封装：VQFN (RHD)-28，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAUAG，TI官网CDCLVP1208RHDR的批量USD价格：4.066（1000+）
CDCLVP1208RHDT，工作温度：-40 to 85，封装：VQFN (RHD)-28，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAUAG，TI官网CDCLVP1208RHDT的批量USD价格：4.879（1000+）
CDCLVP1208EVM — CDCLVP1208 评估模块
CDCLVP1208 是一款高性能、低附加相位噪声时钟缓冲器。它具有两个通用输入缓冲器，支持单端或差动时钟输入，可通过控制引脚进行选择。该器件还具有片上偏压发生器，它可以为器件输入提供 LVPECL 共模电压。此评估模块 (EVM) 旨在演示 CDCLVP1208 的电性能。这个完全组装且经过工厂测试的评估板允许对 CDCLVP1208 器件的所有功能进行全面验证。为达到最佳性能，该评估板配备有 50Ω SMA 连接器和受控良好的 50Ω 阻抗微带传输线。CDCLVPxxxx IBIS Model (Rev. B)
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