Texas Instruments LMK00301 Fanout Buffer / Level Translator

Texas Instruments LMK00301 Differential Fanout Buffer / Level Translator is a 3GHz, 10-output differential fanout buffer intended for high-frequency, low-jitter clock/data distribution and level translation. The input clock is selected from two universal inputs or one crystal input. The selected input clock is distributed to two banks of 5 differential outputs and one LVCMOS output. Both differential output banks can be independently configured as LVPECL, LVDS, or HCSL drivers or disabled. The LVCMOS output has a synchronous enable input for runt-pulse-free operation when enabled or disabled. The LMK00301 operates from a 3.3V core supply and 3 independent 3.3V/2.5V output supplies.

Features

  • 3:1 Input multiplexer
  • Two universal inputs operate up to 3.1GHz and accept LVPECL, LVDS, CML, SSTL, HSTL, HCSL, or single-ended clocks
  • One crystal input accepts 10 to 40MHz crystal or a single-ended clock
  • Two banks with 5 differential outputs each
  • LVPECL, LVDS, HCSL, or Hi-Z (selectable per bank)
  • LVPECL additive jitter with LMK03806 clock source at 156.25MHz: 20fs RMS (10kHz - 1MHz) 51fs RMS (12kHz - 20MHz)
  • High PSRR of -65 / -76dBc (LVPECL/LVDS) at 156.25MHz
  • LVCMOS Output with synchronous enable input
  • Pin-controlled configuration
  • 3.3V ± 5% VCC core supply
  • 3 Independent VCCO output supplies at 3.3V/2.5V ± 5%
  • -40°C to +85°C Industrial temperature range
  • 48-lead WQFN (7mm × 7mm)

Applications

  • Clock distribution and level translation for ADCs, DACs, multi-Gigabit Ethernet, XAUI, fibre channel, SATA/SAS, SONET/SDH, CPRI, high-frequency backplanes, switches, routers, line cards, timing cards
  • Servers, computing, PCI express (PCIe 3.0)
  • Remote radio units and baseband units
Inilathala: 2015-12-15 | Na-update: 2022-03-11