LMV112_14 Datasheet, PDF (1/19 Pages) Texas Instruments – 40 MHz Dual Clock Buffer

LMV112
www.ti.com
SNAS297A – JUNE 2005 – REVISED JULY 2005
LMV112 40 MHz Dual Clock Buffer
Check for Samples: LMV112
FEATURES
1
•2 (Typical values are: V_SUPPLY = 2.7V and C_L = 20
pF, unless otherwise specified)
• Small signal bandwidth 40 MHz
• Supply voltage range 2.4V to 5V
• Slew rate 110 V/μs
• Total supply current 1.6 mA
• Shutdown current 59 µA
• Rail-to-rail input and output
• Individual buffer enable pins
• Rapid T_on technology
• Crosstalk rejection circuitry
• 8-pin LLP, pin access packaging
• Temperature range −40°C to 85°C
APPLICATIONS
• 3G mobile applications
• WLAN–WiMAX modules
• TD_SCDMA multi-mode MP3 and camera
• GSM modules
• Oscillator modules
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.
1
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005, Texas Instruments Incorporated