Product details

Function Single-ended Output frequency (max) (MHz) 78 Number of outputs 2 Output supply voltage (V) 2.5, 3.3, 5 Core supply voltage (V) 2.5, 3.3, 5 Features Dual 1:1 fanout Operating temperature range (°C) -40 to 85 Rating Catalog Output type Rail-to-rail Input type Rail-to-rail
Function Single-ended Output frequency (max) (MHz) 78 Number of outputs 2 Output supply voltage (V) 2.5, 3.3, 5 Core supply voltage (V) 2.5, 3.3, 5 Features Dual 1:1 fanout Operating temperature range (°C) -40 to 85 Rating Catalog Output type Rail-to-rail Input type Rail-to-rail
DSBGA (YFQ) 8 1.96000000000000028000000000000001 mm² 1.4000000000000001 x 1.4000000000000001 WSON (NGQ) 8 9 mm² 3 x 3
  • (Typical Values are: VSUPPLY = 2.7V and CL = 10 pF, unless Otherwise Specified.)
  • Small Signal Bandwidth 78 MHz
  • Supply Voltage Range 2.4V to 5V
  • Phase Noise (VIN = 1 VPP, fC = 38.4 MHz, Δf = 1 kHz) −123 dBc/Hz
  • Slew Rate 106 V/μs
  • Total Supply Current 2.3 mA
  • Shutdown Current 30 µA
  • Rail-to-Rail Input and Output
  • Individual Buffer Enable Pins
  • Rapid Ton Technology
  • Crosstalk Rejection Circuitry
  • Packages:
    • 8-Pin WSON, Solder Bump and no Pullback
    • 8-Bump DSBGA
  • Temperature Range −40°C to 85°C

All trademarks are the property of their respective owners.

  • (Typical Values are: VSUPPLY = 2.7V and CL = 10 pF, unless Otherwise Specified.)
  • Small Signal Bandwidth 78 MHz
  • Supply Voltage Range 2.4V to 5V
  • Phase Noise (VIN = 1 VPP, fC = 38.4 MHz, Δf = 1 kHz) −123 dBc/Hz
  • Slew Rate 106 V/μs
  • Total Supply Current 2.3 mA
  • Shutdown Current 30 µA
  • Rail-to-Rail Input and Output
  • Individual Buffer Enable Pins
  • Rapid Ton Technology
  • Crosstalk Rejection Circuitry
  • Packages:
    • 8-Pin WSON, Solder Bump and no Pullback
    • 8-Bump DSBGA
  • Temperature Range −40°C to 85°C

All trademarks are the property of their respective owners.

The LMH2180 is a high speed dual clock buffer designed for portable communications and applications requiring multiple accurate multi-clock systems. The LMH2180 integrates two 75 MHz low noise buffers with independent shutdown pins into a small package. The LMH2180 ensures superb system operation between the baseband and the oscillator signal path by eliminating crosstalk between the multiple clock signals.

Unique technology and design provides the LMH2180 with the ability to accurately drive both large capacitive and resistive loads. Low supply current combined with shutdown pins for each channel means the LMH2180 is ideal for battery powered applications. This part does not use an internal ground reference, thus providing additional system flexibility.

The flexible buffers provide system designers the capacity to manage complex clock signals in the latest wireless applications. Each buffer delivers 106 V/μs internal slew rate with independent shutdown and duty cycle precision. Each input is internally biased to 1V, removing the need for external resistors. Both channels have rail-to-rail inputs and outputs, a gain of one, and are AC coupled with the use of one capacitor.

Replacing a discrete buffer solution with the LMH2180 provides many benefits: simplified board layout, minimized parasitic components, simplified BOM, design durability across multiple applications, simplification of clock paths, and the ability to reduce the number of clock signal generators in the system. The LMH2180 is produced in the tiny packages minimizing the required PCB space.

The LMH2180 is a high speed dual clock buffer designed for portable communications and applications requiring multiple accurate multi-clock systems. The LMH2180 integrates two 75 MHz low noise buffers with independent shutdown pins into a small package. The LMH2180 ensures superb system operation between the baseband and the oscillator signal path by eliminating crosstalk between the multiple clock signals.

Unique technology and design provides the LMH2180 with the ability to accurately drive both large capacitive and resistive loads. Low supply current combined with shutdown pins for each channel means the LMH2180 is ideal for battery powered applications. This part does not use an internal ground reference, thus providing additional system flexibility.

The flexible buffers provide system designers the capacity to manage complex clock signals in the latest wireless applications. Each buffer delivers 106 V/μs internal slew rate with independent shutdown and duty cycle precision. Each input is internally biased to 1V, removing the need for external resistors. Both channels have rail-to-rail inputs and outputs, a gain of one, and are AC coupled with the use of one capacitor.

Replacing a discrete buffer solution with the LMH2180 provides many benefits: simplified board layout, minimized parasitic components, simplified BOM, design durability across multiple applications, simplification of clock paths, and the ability to reduce the number of clock signal generators in the system. The LMH2180 is produced in the tiny packages minimizing the required PCB space.

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Technical documentation

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* Data sheet LMH2180 75 MHz Dual Clock Buffer datasheet (Rev. D) 22 Mar 2013
EVM User's guide AN-1776 LMH2180 Evaluation Board in WSON (Rev. B) 01 May 2013
EVM User's guide AN-1863 LMH2180 Evaluation Board in micro SMD (Rev. A) 30 Apr 2013

Design & development

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Evaluation board

LMH2180SDEVAL — Evaluation Board for the LMH2180 75 MHz Dual Clock Buffer

This evaluation board is designed to aid in the characterization of Texas Instruments LMH2180 75MHz Dual Clock Buffer. This board simplifies the connection and ease of use of any oscillating input device. Use this evaluation board as a guide for high frequency layout and as a tool to aid in device (...)

User guide: PDF
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Package Pins CAD symbols, footprints & 3D models
DSBGA (YFQ) 8 Ultra Librarian
WSON (NGQ) 8 Ultra Librarian

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