1 Features

• High-performance differential and single-ended

output Oscillator, supporting any fixed frequency

within the below range:

– LMK6D: 1 to 400 MHz, LVDS output

– LMK6H: 1 to 400 MHz, HCSL output

– LMK6P: 1 to 400 MHz, LVPECL output

– LMK6C: 1 to 200 MHz, LVCMOS output

• Ultra-low jitter:

– LMK6D/LMK6H/LMK6P: 100-fs typical / 125-fs

maximum RMS jitter at 156.25 MHz (12 kHz to

20 MHz)

– LMK6C: 350-fs typical / 500-fs maximum RMS

jitter at 100 MHz (12 kHz to 20 MHz)

– LMK6H: PCIe Gen 1 to Gen 6 compliant

• ±25 ppm total frequency stability inclusive of 10

years aging and all other factors

• Smallest industry standard DLE and DLF

packages

• Support extended industrial temperature grade:

– LMK6P/LMK6D/LMK6H: –40°C to 85°C

– LMK6C: –40°C to 105°C

• Integrated LDO for robust supply noise immunity:

– –72 dBc PSRR at 500 kHz ripple

• Start-up time: < 5 ms

• Standard frequencies:

– LVCMOS (MHz): 4, 8.192, 12, 20, 24, 25,

33.333, 40, 50, 60, 65.53, 74.25, 100, 125 and

156.25

– Differential (MHz): 51.84, 100, 122.88, 125,

148.5, 155.52, 156.25, 161.1328125, 200 and

312.5

• Device can support any frequency between 1 MHz

to 400 MHz. Contact TI representative for any

frequency and samples needed

2 Applications

• 56G/112G PAM4 clocking

• 100G/200G/400G/800G Optical Transport Network

and Coherent Optics

• Network equipment, switches, routers, line cards,

SAN, data centers and baseband units (BBU)

• PCIe Gen 1 to Gen 6 compliant reference clock

• Industrial applications

• Test and measurement

• ASIC, FPGA, MCU reference clocking

• High-performance crystal oscillator replacement

3 Description

Texas Instruments' Bulk-Acoustic Wave (BAW) is a

micro-resonator technology that enables integration of

high-precision BAW resonator directly into packages

with ultra-low jitter clock circuitry. BAW is fully

designed and manufactured at TI factories like other

silicon-based fabrication processes.

The LMK6x device is an ultra-low jitter, fixedfrequency

oscillator which incorporates the BAW

as the resonator source. The device is factoryprogrammed

per specific operation mode, including

frequency, voltage, output type, and function pin. With

a high-performance fractional frequency divider, the

LMK6x is capable of producing any frequency within

the specified range providing a single device family for

all frequency needs.

The high-performance clocking, mechanical stability,

flexibility, and small package options for this device

are designed for reference and core clocks in highspeed

SERDES used in telecommunications, data

and enterprise network, and industrial applications.