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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.

LMK61E0-050M, LMK61E2-100M, LMK61E2-125M, LMK61E2-156M, LMK61E2-312M

LMK61A2-100M, LMK61A2-125M, LMK61A2-156M, LMK61A2-312M, LMK61I2-100M

SNAS676B – OCTOBER 2015 – REVISED MARCH 2017

LMK61XX High-Performance Ultra-Low Jitter Oscillator

1

1 Features

1

•

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.

Device Information(1)

PART

NUMBER

OUTPUT FREQ

(MHz) AND

FORMAT

TOTAL FREQ

STABILITY (PPM)

PACKAGE

LMK61A2-

100M00

100 LVDS

± 50

6-pin QFM

(7.0 mm x 5.0

mm)

LMK61A2-

125M00

125 LVDS

± 50

LMK61A2-

156M25

156.25 LVDS

± 50

LMK61A2-

312M50

312.5 LVDS

± 50

LMK61E0-

050M00

50 LVPECL

± 25

LMK61E2-

100M00

100 LVPECL

± 50

LMK61E2-

125M00

125 LVPECL

± 50

LMK61E2-

156M25

156.25 LVPECL

± 50

LMK61E2-

312M50

312.5 LVPECL

± 50

LMK61I2-

100M00

100 HCSL

± 50

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Pinout