Application software & framework
LMK3H2108-DESIGN — LMK3H210x configuration GUI software
Software provides configuration support for LMK3H2104 and LMK3H2108 devices
LMK3H2108
8-output, PCIe Gen 1 to Gen 7 compliant, BAW reference-less clock generator, clock mux and buffer
Data sheet
LMK3H2108
- Integrated BAW resonator
- No need for external XTAL/XO
- Flexible output frequency
- 2 fraction output dividers (FOD), individual channel dividers
- Up to 400MHz output frequency
- Flexible output format
- 1.2/1.8/2.5/3.3V LVCMOS
- DC- or AC-coupled LVDS
- LP-HCSL with programmable swing. LVPECL, CML and other formats can be derived from LP-HCSL
- Very low jitter
- 61fs max PCIe Gen 5 CC with SSC jitter
- 36.4fs max PCIe Gen 6 CC with SSC jitter
- 25.5fs max PCIe Gen 7 CC with SSC jitter
- PCIe Gen 1 to Gen 7 compliant
- Configurable SSC
- Programmable -0.05% to -3% down spread and ±0.025% to ±1.5% center spread, or preset -0.1%, -0.25%, -0.3% and -0.5% down spread
- 3 inputs (LMK3H2108) or 1 input (LMK3H2104) that can be bypassed to any output
- 5ms max startup time
- Fail-safe input pins can be pulled high when device power is off
- Flexible power supply
- Each VDD pin can be independently connected to = 1.8, 2.5 or 3.3V
- Each VDDO pin can be independently connected set to 1.8, 2.5 or 3.3V
- -40 to 105°C ambient temperature
LMK3H2104 and LMK3H2108 are BAW-based clock generators that do not require any external XTAL or XO. The devices can be used as PCIe clock generators or general purpose clock generators. The 2 FODs (Fractional Output Divider) provide frequency flexibility, low power and low jitter at the same time.
LMK3H2104 has up to 4 differential outputs plus 2 LVCMOS outputs or up to 10 LVCMOS outputs. LMK3H2108 has up to 8 differential outputs or 16 LVCMOS outputs.
LMK3H2104 has one clock input and LMK3H2108 has three clock inputs. The clock inputs provide clock multiplexing and buffering ability. Each output bank can independently select any clock source.
The GPI and GPIO pins provide additional control flexibility. These pins can be configured as individual OE, grouped OE, I2C address selection, OTP page selection, PWRGD/PWRDN#, status output and other functions.
The device supports one-time programmable (OTP) non-volatile memory which can be customized and factory preprogrammed.
Technical documentation
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Application software & framework
LMK3H2108-GUI — Programming GUI for the public release of the LMK3H2108 devices.
The TICS Pro 2 software is required for interfacing with the LMK3H210x family of devices. This allows for handling of the register paging functionality automatically.
Supported products & hardware
Design tool
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PLLATINUMSIM-SW is a simulation tool that allows users to create detailed designs and simulations of our PLLatinum™ integrated circuits, which include the LMX series of phase-locked loops (PLLs) and synthesizers.
Supported products & hardware
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN (RKP) | 40 | Ultra Librarian |
Ordering & quality
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