LMK3C0105-Q1中文资料德州仪器数据手册PDF规格书

1 Features

• AEC-Q100 Grade 2 qualified for automotive

applications

• Integrated BAW resonator, no need for external

reference

• Flexible frequency generation:

– 100MHz to 400MHz dual Fractional Output

Dividers (FODs)

– Two channel dividers: up to three unique output

frequencies from 2.5MHz to 200MHz

• Example: OUTA/B/C/D/E = 25MHz

• Example: OUTA/B = 100MHz, OUTC/D =

50MHz, OUTE = 25MHz

– 1.8V/2.5V/3.3V LVCMOS outputs supported up

to 200MHz

– Generation of up to 5 LVCMOS clocks on

OUTA through OUTE pins

• ±25ppm total output frequency stability

• 2 functional modes: I2C or preprogrammed OTP

• –40°C to 105°C ambient temperature.

• Functional Safety-Capable:

– Documentation available to aid functional safety

system design

• Mixed SSC and non-SSC output support

• Programmable SSC modulation depth

– Preprogrammed: –0.1%, –0.25%, –0.3%,

and –0.5% down spread

– Register programmable: –0.1% to –3% down

spread or ±0.05% to ±1.5% center spread

• VDD = VDDO = 1.8V/2.5V/3.3V ± 5%

• <5ms start-up time

• <50ps output-to-output skew when the outputs are

from the same FOD

• Fail-safe input and VDD pins

2 Applications

• Crystal replacement (up to 5 single-ended clocks)

• ASIC, FPGA, MCU reference clocking

• Advanced Driver Assistance Systems (ADAS)

• High-Performance Compute

• Head Unit & Digital Cockpit

• Vehicle Instrument Cluster

3 Description

The LMK3C0105-Q1 is a 5-output reference-less

clock generator with SSC support. The device is

based on TI proprietary Bulk Acoustic Wave (BAW)

technology and provides ±25ppm clock outputs

without any crystal or external clock reference.

The device can provide 5 SSC clocks, 5 non-

SSC clocks, or mixed SSC and non-SSC clocks

at the same time. Up to three different output

frequencies can be generated across the five outputs.

Each output channel can select either FOD as the

frequency source to generate four LVCMOS clocks;

the REF_CTRL pin functions as a fifth LVCMOS clock

output, and can select either FOD as the source.

The device can be easily configured through

either GPIO pins or the I2C interface. The

LMK3C0105-Q1 has very good PSNR and does not

require any external LDO. Refer to Power Supply

Recommendations for detailed guidelines on power

supply filtering and sourcing from a DC/DC supply.