LTC6948IUFD-4#PBF

LTC6948IUFD-4#PBF is an Analog Devices Linear Technology part: a 4-output, programmable clock synthesizer/PLL designed to generate multiple low-jitter clocks from a single reference. It is configured via a serial interface (SPI-like) and provides four clock outputs that can be independently programmed for division/multiplication to achieve the desired frequencies.
Key points:
- Four configurable clock outputs from one reference
- Programmable via a serial interface; suitable for clock distribution and RF/Signal-processing front-ends
- Designed for low phase noise and stable frequency generation
- RoHS-compliant, lead-free variant; packaging indicated by IUFD
- The “-4” denotes four outputs; “PBF” indicates RoHS lead-free
Applications:
- Microcontroller and FPGA clocks
- RF/IF transceivers and telecom front-ends
- Data converters, digital receivers, test equipment
For exact electrical specs (frequency range, jitter, supply, stability) and the precise package dimensions, consult the LTC6948 datasheet and the product page.

Manufacturer: Analog Devices, Inc. (product originally branded LTC by Linear Technology; Linear Technology was acquired by Analog Devices in 2017).
What kind of company: Analog Devices is a multinational semiconductor company that designs, develops and markets high‑performance analog, mixed‑signal and digital signal processing integrated circuits (data converters, amplifiers, power management, RF transceivers, sensors, etc.) for industrial, communications, automotive, and consumer markets. It is a publicly traded technology company (NASDAQ: ADI).

- Wireless transceivers and base stations: LO/frequency synthesis for RF front-ends, up/down converters, and multi-band radios.
- RF/microwave transceivers and test equipment: LO generation, signal generation, calibration, and lab instrumentation.
- Aerospace, defense, radar and satellite comms: radar/IF LO synthesis, secure/tolerant RF systems.
- Instrumentation and timing: low-jitter clock generation and distribution for FPGAs, processors, and microcontrollers.
- Automotive and industrial RF systems: radar sensors, wireless sensor networks, and robust wireless links.

The LTC6948IUFD-4#PBF is in a 20‑lead QFN (4×4 mm) package with exposed pad; Pb‑Free/RoHS compliant.