LMK61E07-SIAT

The LMK61E07-SIAT is a MEMS-based, multi-output clock generator/oscillator from SiTime. It takes one reference clock and produces up to seven low-jitter outputs, suitable for distributing clocks to CPUs, FPGAs, SerDes, and telecom devices. The SIAT suffix indicates automotive-grade temperature range and packaging.
Key points:
- I2C-programmable: set frequencies, enable/disable outputs, drive strength, and spread-spectrum.
- Multisource clock: configurable output formats and flexible division/multiplication to meet various subsystem needs.
- Low jitter and robust performance: MEMS timing with good phase noise and resilience to vibration/shock.
- Power and integration: reduces BOM (no quartz crystals), compact packaging, and easy board routing.
- Applications: data centers, networking equipment, high-speed interfaces, ASIC/FPGA clocking, and automotive/industrial systems.
Note: Verify exact specs (frequency range, jitter, voltage, and package) in the current datasheet for the SIAT variant.

Here are the typical features of the TI LMK61E07-SIAT (clock generator/jitter cleaner in the LMK61x7 family):
- Seven clock outputs (differential) with flexible output standards (LVDS/LVPECL/CML) and individual enable
- One master reference input (with option for internal reference) for clock distribution
- I2C/SMBus serial interface for register-level programming and monitoring
- PLL-based frequency synthesis with fractional-N/divider options for precise target frequencies
- Spread-spectrum clocking to reduce EMI
- Integrated jitter attenuation and low output phase noise
- Output enable, power-down, and sequencing features
- No external VCXO required; integrated VCO/pll
- Single-supply operation (typical 3.3 V) with wide operating temperature (-40°C to 85°C)
- Small package suitable for dense Board-level implementations
Applications: FPGA timing, networking/telecom equipment, data centers, and other systems requiring multi-output, low-jitter clock distribution. (Consult the datasheet for exact electrical specs and supported frequency ranges.)

LMK61E07‑SIAT is in an 8‑pin LCC (leadless chip carrier) surface‑mount package (SMD).

- Pin count: 28 pins (QFN-28 package, with exposed pad)
- Function: Seven-output jitter-attenuating clock generator/distributor. It uses a reference input and provides seven programmable clock outputs, controlled via I2C, for generating multiple clean system clocks.

- Manufacturer: Knowles Corporation (Knowles Acoustics).
- What kind of company: A global technology company that designs, develops, and manufactures MEMS microphones and audio sensing components for mobile, consumer electronics, automotive, and IoT markets.

LMK61E07-SIAT is a 7-output, low-jitter clock generator and distribution IC. Applications:
- Clocking for FPGAs/ASICs/DSPs
- Multiple high-speed SerDes references (PCIe, SATA, Ethernet, USB)
- Telecom/data-center timing networks needing precise phase alignment
- RF/microwave transceivers and PLLs
- Test/measurement equipment
- Industrial/automotive electronics requiring multiple synchronized clocks