LMK3H0102T20RGTRQ1-Texas Instruments-Price, Stock & Datasheet

The LMK3H0102-Q1 is a 2-output PCIe Gen 1 to Gen 7 compliant reference-less clock generator with Spread Spectrum Clocking (SSC) support. The part 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 two SSC clocks, two non-SSC clocks, or one SSC clock and one non-SSC clock at the same time. The device meets the full PCIe compliance from Gen 1 to Gen 7, including Common Clock with or without SSC, Separate Reference No Spread (SRNS), and Separate Reference Independent Spread (SRIS).

The device can be easily configured through either pins or I2C interface. An external DC/DC can be used to power the device. Refer to Power Supply Recommendations for detailed guidelines on power supply filtering and sourcing from DC/DC.

For OTP default settings for each LMK3H0102Txx configuration, refer to the LMK3H0102 Configuration Guide.

AEC-Q100 Grade 2 qualified for automotive applications
Ambient temperature: –40°C to 105°C
Functional Safety-Capable:
- Documentation available to aid functional safety system design
Integrated BAW resonator, no need for external reference
Flexible frequency generation:
- Two channel dividers: up to three unique output frequencies from 2.5MHz to 400MHz
- LVCMOS outputs supported up to 200MHz: 1.8V, 2.5V, or 3.3V
- Combination of AC-LVDS, DC-LVDS, LP-HCSL, and LVCMOS on OUT0 and OUT1 pins
Total output frequency stability: ±25ppm
2 functional modes: I2C or preprogrammed OTP
PCIe Gen 1 to Gen 7 compliant: Common Clock with or without SSC, SRNS, and SRIS
Very low PCIe jitter with SSC:
- PCIe Gen 5 Common Clock jitter: 57.5fs maximum (PCIe limit is 150fs)
- PCIe Gen 6 Common Clock jitter: 34.5fs maximum (PCIe limit is 100fs)
- PCIe Gen 7 Common Clock jitter: 29.6fs maximum (PCIe limit is 67fs)
Programmable SSC modulation depth
- Preprogrammed: –0.1%, –0.25%, –0.3%, and –0.5% down spread at 200MHz FOD frequency
- Register programmable: –0.1% to –3% down spread or ±0.05% to ±1.5% center spread
1.8V to 3.3V supply voltage
Internal LDOs with –93.1dBc PSNR at 500kHz switching noise for LP-HCSL outputs
Output-to-output skew: <50ps
Fail-safe digital input pins