LMV112

www.ti.com

SNAS297A – JUNE 2005 – REVISED JULY 2005

LMV112 40 MHz Dual Clock Buffer

Check for Samples: LMV112

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FEATURES

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Crosstalk rejection circuitry

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8-pin LLP, pin access packaging

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pF, unless otherwise specified)

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Temperature range

−40°C to 85°C

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Small signal bandwidth 40 MHz

APPLICATIONS

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Supply voltage range 2.4V to 5V

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3G mobile applications

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Slew rate 110 V/

μs

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WLAN–WiMAX modules

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Total supply current 1.6 mA

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TD_SCDMA multi-mode MP3 and camera

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Shutdown current 59 µA

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GSM modules

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Rail-to-rail input and output

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Oscillator modules

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Individual buffer enable pins

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DESCRIPTION

The LMV112 is a high speed dual clock buffer designed for portable communications and accurate multi-clock

systems. The LMV112 integrates two 40 MHz low noise buffers which optimizes application and out performs

large discrete solutions. This device enables superb system operation between the base band and the oscillator

signal path while eliminating crosstalk.

National Semiconductor’s unique technology and design deliver accuracy, capacitance and load resistance while

increasing the drive capability of the device. The low power consumption makes the LMV112 perfect for battery

applications.

The robust, independent, and flexible buffers are designed to provide the customer with the ability to manage

complex clock signals in the latest wireless applications. The buffers deliver 110 V/

μs internal slew rate with

independent shutdown and duty cycle precision. The patented analog circuit drives capacitive loads beyond 20

pF. National’s proven biasing technique has 1V centering, rail-to-rail input/output unity gain, and AC coupled

convenient inputs. These integrated cells save space and require no external bias resistors. National’s rapid

recovery after disable optimizes performance and current consumption. The LMV112 offers individual enable pin

controls and since there is no internal ground reference either single or split supply configurations offer additional

system flexibility and power choices.

The LMV112 is a proven replacement for any discrete circuitry and simplifies board layout while minimizing

related parasitic components.

The LMV112 is produced in the small LLP package which offers high quality while minimizing its use of PCB

space. National’s advanced packaging offers direct PCB-IC evaluation via pin access.

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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2005, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.