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LTC6948IUFD-1#TRPBF

Name: LTC6948IUFD-1#TRPBF
Rating: 4.7 (12 reviews)

IC FRACTIONAL-N PLL W/VCO 28QFN

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Mfr。パート #LTC6948IUFD-1#TRPBF
パッケージ 28-WFQFN Exposed Pad
データシート LTC6948IUFD-1#TRPBF DataSheet
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仕様

Supplier	Analog Devices Inc.
Package	Tape & Reel (TR),Cut Tape (CT)
ProductStatus	Active
Type	Clock/Frequency Synthesizer (RF/IF), Fractional N
PLL	Yes
Input	Clock
Output	Clock
NumberofCircuits	1
Ratio-Input:Output	1:1
Differential-Input:Output	Yes/Yes
Frequency-Max	3.74GHz
Divider/Multiplier	Yes/No
Voltage-Supply	3.15V ~ 5.25V
OperatingTemperature	-40°C ~ 105°C
MountingType	Surface Mount
Package/Case	28-WFQFN Exposed Pad

概要

Description

The LTC6948IUFD-1#TRPBF is a variant of Analog Devices’ LTC6948 wideband frequency synthesizer. It typically provides a programmable PLL with an integrated reference and VCO/prescalers to generate RF clocks or LO signals from a reference input, controllable via a serial interface (SPI-like). The -1 suffix denotes a specific option/version, while IUFD indicates the industrial-temperature variant and package type. The #TRPBF suffix means Tape-and-Reel packaging and Pb-free fabrication.
Key uses: RF transceivers, LO/clock generation for wireless and radar front-ends, instrumentation, and test equipment requiring compact, low-jitter frequency synthesis.
Note: For exact specifications, pinout, programming sequence, and layout guidance, consult the LTC6948 datasheet and the product page on Analog Devices’ site (check the LTC6948IUFD-1#TRPBF listing for package and option details).

Features

Here are the typical features of the LTC6948IUFD-1#TRPBF RF frequency synthesizer (concise):
- Fractional-N PLL-based RF frequency synthesizer with programmable modulus/dividers
- SPI-compatible serial control interface for frequency, mode, and power options
- Supports integer-N and fractional-N operation with dithering to reduce fractional spurs
- Low phase noise and low spurious performance suitable for LO generation in RF transceivers
- Wide tuning range with high-resolution frequency steps
- Integrated reference divider and flexible reference input options
- Fast settling and reliable lock detection
- Low power operation in a compact Pb-free package
- Available in Tape & Reel (TRPBF) packaging for automated assembly
Note: Specific electrical ratings (max frequency, voltage, temp range, power, etc.) vary by variant. For exact specs, refer to the LTC6948 datasheet and the -1 variant documentation.

Package

Pb-free Tape-and-Reel (TRPBF). The LTC6948IUFD-1 is packaged in a 32-pin LQFP package.

Pinout

- Pin count: 32 pins (32-pin package).
- Function: Wideband fractional-N RF phase-locked loop (PLL) synthesizer with integrated VCO and prescalers, used to generate RF frequencies for communication front-ends.

Manufacturer

Manufacturer: Analog Devices, Inc. (ADI). The LTC prefix comes from Linear Technology; Analog Devices acquired Linear Technology in 2017, so LTC parts are now part of ADI.
Kind of company: A US-based multinational semiconductor company that designs and manufactures analog, mixed-signal, and DSP integrated circuits.

Application

Typical application areas include:
- RF/microwave wireless systems (base stations, backhaul, point-to-point links)
- Satellite transceivers
- Radar and electronic warfare
- Test and measurement equipment (signal generators, LO sources)
- Lab instrumentation and clock/LO distribution
- Any system requiring programmable fractional-N PLL with integrated VCO and low phase noise for LO generation and receiver/transmitter timing.

Equivalent

Direct one-for-one equivalents don’t exist. The LTC6948IUFD-1#TRPBF is a unique fractional-N PLL with an integrated VCO. Closest substitutes from Analog Devices are the ADF4350, ADF4351, ADF4353, and ADF4355 families. Verify frequency range, VCO requirements, SPI interface, packaging, and external components before substituting.