LTC6957HMS-2#PBF

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LTC6957HMS-2#PBF

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IC CLK BUFFER DVR 1:2 12MSOP

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Thông số kỹ thuật

thuộc tính Giá trị
Supplier Analog Devices Inc.
Package / Case Tube
Part Status Active
Type Fanout Buffer (Distribution)
Number of Circuits 1
Ratio - Input: Output 1:2
Differential - Input: Output Yes/Yes
Input CML, CMOS, LVDS, LVPECL
Output LVDS
Frequency - Max 300 MHz
Voltage - Supply 3.15V ~ 3.45V
Operating Temperature -40°C ~ 125°C
Mounting Type Surface Mount

Tổng quan

Description

LTC6957HMS-2#PBF is a high-performance clock generator/distributor from Analog Devices (Linear Technology). It takes a reference clock and produces multiple low-jitter output clocks suitable for high-speed systems (SERDES, JESD204B, FPGA/DSP timing, etc.). The HMS suffix indicates the package variant, and -PBF signifies Pb-free (lead-free) packaging. It’s intended for applications requiring tight clock synchronization and low added jitter across several outputs. Configuration and operation are described in the LTC6957 datasheet and user guide, including pinout, control interface, supply/temperature ranges, and recommended board layout. For exact specs and packaging details, refer to the LTC6957 product page and datasheet.

Features

Key features of LTC6957HMS-2#PBF:
- Dual-output jitter-attenuating clock synthesizer with PLL
- Fractional-N architecture for precise, programmable output frequencies
- Outputs selectable as LVDS, LVPECL, or CMOS; adjustable drive strength
- Flexible reference input (single-ended or differential); supports external VCXO
- Very low jitter and phase noise for high-speed SERDES, DACs, FPGAs
- Spread-spectrum clocking and drift/holdover options
- Serial control interface (SPI-like) for easy programming and monitoring
- Power-down and soft-start on power-up
- Pb-free in a compact HMS package (PBF variant)

Pinout

- Pin count: 28 pins (MSOP/TSSOP-28 package).
- Function: High-precision, low-jitter PLL-based clock generator and distribution buffer (clock multiplier/distributor) that takes a reference clock and provides multiple low-jitter output clocks.

Manufacturer

- Manufacturer: Analog Devices, Inc. (ADI). The LTC6957HMS-2#PBF was originally from Linear Technology, which was acquired by ADI in 2017.
- What kind of company: A multinational American semiconductor company that designs and manufactures analog, mixed-signal, and DSP integrated circuits.

Application

LTC6957HMS-2#PBF is a high-performance clock distribution IC. Common application areas include:
- Clock distribution and jitter cleaning for FPGAs, ASICs, and DSPs
- Synchronization for multiple parallel data interfaces
- Clock generation for JESD204B/C ADC/DAC front ends
- High-speed serial interfaces (PCIe, Ethernet, USB3) backplanes
- RF/microwave transceiver front ends and transmitter chains
- Instrumentation and test equipment needing multiple synchronized clocks
- Telecom/wireless base stations and data-center timing
- Automotive/industrial systems requiring low-skew, phase-coherent clocks

Package

HMS indicates LTC’s MSOP-style package. LTC6957HMS-2#PBF is in an MSOP (Pb-free) package. For exact pin count and dimensions, please consult the datasheet.

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