LMK3C0105V18RERR中文资料德州仪器数据手册PDF规格书

1 Features

• 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 85°C ambient temperature.

• 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

• Industrial Communications

• Industrial PC

• Human Machine Interface (HMI)

• Wired Networking

3 Description

The LMK3C0105 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 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.