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LMK1D1204

現行

4 通道輸出 LVDS 1.8-V 緩衝器

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產品規格表

LMK1D1204

現行
產品規格表 立即訂購

產品詳細資料

Number of outputs 4 Additive RMS jitter (typ) (fs) 50 Core supply voltage (V) 1.8, 2.5, 3.3 Output supply voltage (V) 1.8, 2.5, 3.3 Output skew (ps) 20 Operating temperature range (°C) -40 to 105 Rating Catalog Output type LVDS Input type HCSL, LP-HCSL, LVCMOS, LVDS, LVPECL
Number of outputs 4 Additive RMS jitter (typ) (fs) 50 Core supply voltage (V) 1.8, 2.5, 3.3 Output supply voltage (V) 1.8, 2.5, 3.3 Output skew (ps) 20 Operating temperature range (°C) -40 to 105 Rating Catalog Output type LVDS Input type HCSL, LP-HCSL, LVCMOS, LVDS, LVPECL
VQFN (RGT) 16 9 mm² (3 mm × 3 mm)
  • High-performance LVDS clock buffer family with 2 inputs and 4 (2:4) or 8 (2:8) outputs.
  • Output frequency up to 2GHz.
  • Supply voltage: 1.71V to 3.465V
  • Low additive jitter: < maximum 60fs RMS in 12kHz to 20MHz at 156.25MHz

    • Very low phase noise floor: –164dBc/Hz (typical)

  • Very low propagation delay: < 575ps maximum

  • Output skew: 20ps maximum

  • Universal inputs accept LVDS, LVPECL, LVCMOS, LP-HCSL, HCSL and CML inputs
  • LVDS reference voltage, VAC_REF, available for capacitive-coupled inputs
  • Industrial temperature range: –40°C to 105°C
  • Packages available:

    • LMK1D1204: 3mm × 3mm, 16-pin VQFN (RGT)

    • LMK1D1208: 5mm × 5mm, 28-pin VQFN (RHD)
  • High-performance LVDS clock buffer family with 2 inputs and 4 (2:4) or 8 (2:8) outputs.
  • Output frequency up to 2GHz.
  • Supply voltage: 1.71V to 3.465V
  • Low additive jitter: < maximum 60fs RMS in 12kHz to 20MHz at 156.25MHz

    • Very low phase noise floor: –164dBc/Hz (typical)

  • Very low propagation delay: < 575ps maximum

  • Output skew: 20ps maximum

  • Universal inputs accept LVDS, LVPECL, LVCMOS, LP-HCSL, HCSL and CML inputs
  • LVDS reference voltage, VAC_REF, available for capacitive-coupled inputs
  • Industrial temperature range: –40°C to 105°C
  • Packages available:

    • LMK1D1204: 3mm × 3mm, 16-pin VQFN (RGT)

    • LMK1D1208: 5mm × 5mm, 28-pin VQFN (RHD)

The LMK1D120x clock buffer distributes one of two selectable clock inputs (IN0 and IN1) to 4 or 8 pairs of differential LVDS clock outputs (OUT0 through OUT7) with minimum skew for clock distribution. The LMK1D12xx family can accept two clock sources into an input multiplexer. The inputs can either be LVDS, LVPECL, LP-HCSL, HCSL, CML or LVCMOS.

The LMK1D12xx is specifically designed for driving 50Ω transmission lines. In case of driving the inputs in single-ended mode, the appropriate bias voltage as shown in Figure 8-6 must be applied to the unused negative input pin.

The IN_SEL pin selects the input which is routed to the outputs. If this pin is left open, the pin disables the outputs (logic low). The part supports a fail-safe function. The device further incorporates an input hysteresis which prevents random oscillation of the outputs in the absence of an input signal.

The device operates in 1.8V or 2.5V or 3.3V supply environment and is characterized from –40°C to 105°C (ambient temperature). The LMK1D12xx package variant is shown in the table below:

The LMK1D120x clock buffer distributes one of two selectable clock inputs (IN0 and IN1) to 4 or 8 pairs of differential LVDS clock outputs (OUT0 through OUT7) with minimum skew for clock distribution. The LMK1D12xx family can accept two clock sources into an input multiplexer. The inputs can either be LVDS, LVPECL, LP-HCSL, HCSL, CML or LVCMOS.

The LMK1D12xx is specifically designed for driving 50Ω transmission lines. In case of driving the inputs in single-ended mode, the appropriate bias voltage as shown in Figure 8-6 must be applied to the unused negative input pin.

The IN_SEL pin selects the input which is routed to the outputs. If this pin is left open, the pin disables the outputs (logic low). The part supports a fail-safe function. The device further incorporates an input hysteresis which prevents random oscillation of the outputs in the absence of an input signal.

The device operates in 1.8V or 2.5V or 3.3V supply environment and is characterized from –40°C to 105°C (ambient temperature). The LMK1D12xx package variant is shown in the table below:
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 LMK1D120x Low Additive Jitter LVDS Buffer datasheet (Rev. C) PDF | HTML 2026/2/27
應用說明 Sine to Square Wave Conversion Using Clock Buffers PDF | HTML 2024/9/3

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開發板

LMK1D1208EVM — 適用於低抖動 2:8 LVDS 扇出緩衝器的 LMK1D1208 評估模組

LMK1D1208 是具有兩個差分輸入和八個 LVDS 輸出的高性能、低附加抖動 LVDS 時鐘緩衝器。此評估模組 (EVM) 旨在示範 LMK1D1208 的電氣性能。此 EVM 還可以用於評估位於 LMK1Dxxxx 系列內的其他 28 針腳裝置。LMK1D1208EVM 配備 50-Ω SMA 連接器和阻抗控制的 50-Ω 微帶傳輸線，以提供最佳性能。
使用指南: PDF | HTML
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