LTC6948IUFD-1#TRPBF

The LTC6948IUFD-1#TRPBF is a Pb-free, tape-and-reel variant of Analog Devices’ LTC6948, a high‑performance RF frequency synthesizer (fractional‑N PLL) used in wireless, radar, and test/measurement gear.
Key points:
- Programmable PLL with fractional‑N capability for fine frequency steps and reduced spurs.
- SPI (serial) interface to set frequency, reference, division ratios, and other options.
- Suitable for LO generation and other RF synthesis tasks in transceivers and up/down converters.
- Aimed at low jitter/fast locking suitable for demanding RF applications.
- Packaging note: -TRPBF indicates tape‑and‑reel Pb‑free packaging; -1 designates a specific variant.
For exact electrical specs, pinout, and recommended applications, consult the LTC6948 datasheet and the distributor’s packaging summary.

Here are the typical features you can expect for the LTC6948IUFD-1#TRPBF (check the datasheet for exact values):
- Fractional-N PLL frequency synthesizer for wide RF synthesis range
- Programmable N-divider with fractional control for fine resolution
- SPI-compatible serial control interface for programming N, fractional modulus, reference divider, charge-pump current, and other settings
- Output options with programmable division/multiplication for RF outputs
- Low phase noise and low spurious performance suitable for communications
- Reference input options (external reference clock; internal options depending on variant)
- PLL lock detect and power-on reset for robust operation
- Enable/disable and soft-start/power-down features
- Spread-spectrum capability (to reduce EMI) on some variants
- Low power operation with suitable voltage supply range
- Small, RoHS-compliant package suitable for space-constrained designs
- Industrial/extended temperature options on many LTC parts (verify for this exact package)
Note: Please consult the official LTC6948 datasheet for exact electrical specifications, pinout, and permitted operating conditions.

- Pin count: 32 pins (device in a Pb-free, tape-and-reel package).
- Function: High-performance fractional-N RF synthesizer PLL with integrated VCO for wideband frequency generation in RF systems.

- Manufacturer: Analog Devices, Inc. (ADI).
- What kind of company: An American multinational semiconductor company that designs, manufactures, and markets analog, mixed-signal, and digital signal processing (DSP) integrated circuits; it acquired Linear Technology (hence the LTC prefix on legacy parts).

Typical application areas for LTC6948IUFD-1#TRPBF:
- LO generation for RF/microwave transceivers (mixer LO, wideband PLL synthesis)
- Satellite communications and space/defense RF systems
- Radar and remote sensing receivers/transmitters
- Test and measurement equipment (RF signal generators, calibration references)
- Wireless infrastructure and backhaul (base stations, point-to-point links, 5G)
- Scientific instrumentation requiring precise, wideband frequency synthesis
Note: The phrasing reflects general uses of wideband RF frequency synthesizers; confirm exact features from the datasheet for specific design choices.

8-lead MSOP (MSOP-8) plastic package. The -TRPBF suffix indicates Tape-and-Reel packaging, RoHS-compliant, Pb-free.