National Semiconductor LMK03000 Precision Clock Conditioner with Integrated VCO Datasheet

The LMK03000 family of precision clock conditioners combines the functions of jitter cleaning/reconditioning, multiplication, and distribution of a reference clock. The devices integrate a Voltage Controlled Oscillator (VCO), a high performance Integer-N Phase Locked Loop (PLL), a partially integrated loop filter, and up to eight outputs in various LVDS and LVPECL combinations. The VCO output is optionally accessible on the Fout port. Internally, the VCO output goes through a VCO Divider to feed the various clock distribution blocks. Each clock distribution block includes a programmable divider, a phase synchronization circuit, a programmable delay, a clock output mux, and an LVDS or LVPECL output buffer. This allows multiple integer-related and phase-adjusted copies of the reference to be distributed to eight system components. The clock conditioners come in a 48-pin LLP package and are footprint compatible with other clocking devices in the same family.


National Semiconductor LMK03000 Precision Clock Conditioner with Integrated VCO Datasheet - cover page
Brand
National Semiconductor
Document type
Datasheet
Language
English
Pages
30
File format
PDF
File size
654 KB
Published
04 May, 2012
Updated
28 September, 2023
MD5 checksum
5AB081D208603FAE0A498A16B378AF8A

About this manual

The LMK03000 family combines jitter cleaning, multiplication, and distribution functions in a single device. It integrates a VCO, an Integer‑N PLL, and up to eight LVDS or LVPECL clock outputs with programmable delay and muxing, making it suitable for networking, wireless, medical, test, and aerospace applications.

The devices are offered in a 48‑pin LLP package (7.0 × 7.0 × 0.8 mm) and feature pin‑compatible families, a partially integrated loop filter, and a range of programmable divider values. Detailed electrical characteristics, absolute maximum ratings, and clock‑distribution specifications are provided for design reference.

What's inside

  • Features
  • Functional Block Diagram
  • Connection Diagram
  • Pin Descriptions
  • Absolute Maximum Ratings
  • Electrical Characteristics
  • Clock Distribution Section
  • Notes

Specifications

Phase noise contribution-224 dBc/Hz
Power supply voltage (operating)3.15 V – 3.45 V
Package48‑pin LLP (7.0 × 7.0 × 0.8 mm)

Frequently asked questions

What is the operating power‑supply voltage range for the LMK03000?

The device operates with a supply voltage between 3.15 V and 3.45 V.

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