LTC6948IUFD-4

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LTC6948IUFD-4

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IC CLK/FREQ SYNTH 28QFN

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Spezifikationen

Attribut Wert
PartStatus Obsolete
DigiKeyProgrammable Not Verified
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 6.39GHz
Divider/Multiplier Yes/No
Voltage-Supply 3.15V ~ 5.25V
OperatingTemperature -40°C ~ 105°C (TJ)
MountingType Surface Mount
Package/Case 28-WFQFN Exposed Pad
SupplierDevicePackage 28-QFN (4x5)
BaseProductNumber LTC6948

Übersicht

Description

The LTC6948IUFD-4 is a high-performance clock generator and integrated circuit designed by Analog Devices. It features a low phase noise and a wide frequency range, making it ideal for applications in telecommunications, data converters, and high-speed digital systems. The device can generate multiple output frequencies from a single input, offering flexibility in system design.
Key specifications include a low jitter output, a power supply range of 2.7V to 5.5V, and the ability to produce frequencies up to 1GHz. The LTC6948 incorporates a programmable output divider and a crystal oscillator interface, allowing for precise frequency synthesis. Its compact package and low power consumption make it suitable for space-sensitive applications.
Additionally, the LTC6948 supports various output formats, including CMOS and LVDS, catering to diverse interfacing needs. Overall, the LTC6948IUFD-4 is a versatile solution for generating high-quality clock signals in demanding electronic systems.

Equivalent

Equivalent products to the LTC6948IUFD-4 include the Analog Devices AD9144, Texas Instruments DAC5682Z, and Maxim Integrated MAX5864. These alternatives may share similar specifications in terms of bandwidth, performance, and applications, such as RF and high-speed data conversion. Always verify specific requirements and compatibility before substituting components.

Features

The LTC6948IUFD-4 is a high-performance, low noise, and low power RF synthesizer and clock generator. Key features include:
1. Frequency Range: Operates from 1 MHz to 2.5 GHz.
2. Low Phase Noise: Offers excellent phase noise performance, making it suitable for high-frequency applications.
3. Integrated VCO: Includes an integrated voltage-controlled oscillator (VCO) that simplifies design and reduces component count.
4. Programmable Output: Features programmable output frequencies with fine resolution, enabling precise frequency generation.
5. Low Power Consumption: Designed for low power operation, beneficial for battery-powered applications.
6. Dual Output: Provides dual outputs, which can be used for multiple frequency synthesizing needs.
7. SPI Interface: Equipped with a serial peripheral interface (SPI) for easy configuration and control.
8. Temperature Range: Operates over an extended temperature range, suitable for various environments.
These features make the LTC6948IUFD-4 ideal for communication systems, test equipment, and other RF applications.

Pinout

The LTC6948IUFD-4 is a low-noise, low-power, and high-performance clock generator and frequency synthesizer from Analog Devices. It features a total of 28 pins.
Key functions of the pins include:
1. Power Supply (VCC): Provides power to the device.
2. Ground (GND): Common ground connection.
3. Reference Input (REFIN): Accepts an external reference frequency.
4. Output Pins (CLKOUT): Provides the generated clock output.
5. Configuration Pins (e.g., SSEL, PD): Used for selecting modes and programming the device.
6. Feedback Pins (FB): For feedback connections in certain configurations.
7. Status Pins (LOCK): Indicates the lock status of the PLL.
These components enable the device to generate and distribute precise clock signals for various applications, ensuring low jitter and high stability.

Manufacturer

The manufacturer of the LTC6948IUFD-4 is Analog Devices, Inc. Analog Devices is a multinational semiconductor company headquartered in Norwood, Massachusetts. It specializes in designing and manufacturing a wide range of high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits. These components are used in various applications, including communications, automotive, industrial automation, healthcare, and consumer electronics.
Analog Devices is known for its innovations in signal processing technology, providing essential components for systems that require precision and reliability. The company focuses on solutions that enhance performance and efficiency in electronic devices and systems, making it a key player in the semiconductor industry.

Application

The LTC6948IUFD-4 is a low-noise, high-performance oscillator and clock generator. It is commonly used in applications such as:
1. Telecommunications: For signal processing in fiber optic and wireless communication systems.
2. Test and Measurement Equipment: Serving as a precise clock source for various analyzers and measurement devices.
3. Data Acquisition Systems: Providing accurate timing for sampling and data conversion.
4. Networking Equipment: Synchronizing data transfer in routers and switches.
5. Consumer Electronics: Used in audio and video processing systems for jitter reduction.
Its versatility makes it suitable for various high-frequency and low-phase noise applications.

Package

The LTC6948IUFD-4 is packaged in a 24-lead, 4 mm x 4 mm LQFN (Leadframe Quad Flat No-lead) package. This type of package provides a compact footprint and efficient thermal performance, making it suitable for various applications in RF and analog circuits.

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