LMK03328 Datasheet, PDF (1/153 Pages) Texas Instruments – Ultra-Low Jitter Clock Generator

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LMK03328
SNAS668A – AUGUST 2015 – REVISED JANUARY 2016
LMK03328 Ultra-Low Jitter Clock Generator with Two Independent PLLs, Eight Outputs,
Integrated EEPROM
1 Features
•1 Ultra Low Noise, High Performance
– Jitter: 100 fs RMS typical, Fout > 100 MHz
– PSRR: -70 dBc, robust supply noise immunity
• Flexible Device Options
– Up to 8 AC-LVPECL, AC-LVDS, AC-CML,
HCSL or LVCMOS outputs or any combination
– Pin mode, I²C mode, EEPROM mode
– 71 pin selectable pre-programmed default
startup options
• Dual Inputs with automatic or manual selection
– Crystal input: 10 to 52 MHz
– External input: 1 to 300 MHz
• Frequency Margining Options
– Fine frequency margining (±50 ppm typ) using
low-cost pullable crystal reference
– Glitchless coarse frequency margining (%)
using output dividers
• Other Features
– Supply: 3.3 V core, 1.8/2.5/3.3 V output supply
– Industrial temperature range (-40ºC to +85ºC)
– Package: 7 mm x 7 mm 48-QFN
2 Applications
• Switches & Routers
• Network & Telecom Line Cards
• Servers & Storage Systems
• Wireless Base Station
3 Description
The LMK03328 is an ultra-low-noise clock generator
with two fractional-N frequency synthesizers with
integrated VCOs, flexible clock distribution/fanout,
and pin-selectable configuration states stored in on-
chip EEPROM. The device can generate multiple
clocks for various multi-gigabit serial interfaces and
digital devices, reduces BOM cost and board area,
and improves reliability by replacing multiple
oscillators and clock distribution devices. The ultra-
low-jitter reduces bit error rate (BER) in high-speed
serial links.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LMK03328
48-QFN
7.00 mm x 7.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
LMK03328 Simplified Block Diagram
Power
Conditioning
PLL1
2
Output
8
Output
8
Dividers
Buffers
PLL2
LMK03328
Ultra-high performance clock generator
Interface
I²C/ROM/
EEPROM
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.