1 Features

• Ultra-low Noise, High Performance
  • Jitter: 90 fs RMS Typical Fout > 100 MHz
  • PSRR: –70 dBc, Robust Supply Noise Immunity
• Supported Output Format
  • LVPECL up to 1 GHz
  • LVDS up to 900 MHz
  • HCSL up to 400 MHz
• Total Frequency Tolerance of ± 50 ppm (LMK61X2) and ± 25 ppm (LMK61X0)
• 3.3-V Operating Voltage
• Industrial Temperature Range (–40ºC to +85ºC)
• 7 mm × 5 mm 6-Pin Package, Pin-Compatible With Industry Standard 7050 XO Package

2 Applications

• High-Performance Replacement for Crystal, SAW, or Silicon-Based Oscillators
• Switches, Routers, Network Line Cards, Base Band Units (BBU), Servers, Storage/SAN
• Test and Measurement
• Medical Imaging
• FPGA, Processor Attach

3 Description

The LMK61XX is an ultra-low jitter oscillator that generates a commonly used reference clock. The device is pre-programmed in factory to support any reference clock frequency; supported output formats are LVPECL up to 1 GHz, LVDS up to 900 MHz, and HCSL up to 400 MHz. Internal power conditioning provide excellent power supply ripple rejection (PSRR), reducing the cost and complexity of the power delivery network. The device operates from a single 3.3 V ± 5% supply.

1. For all available packages, see the orderable addendum at the end of the data sheet.