Datasheet > LMH2191

LMH2191

更新时间： 2024-09-15 11:12:59

品牌	Logo	应用领域
德州仪器 - TI		时钟驱动驱动器
页数	文件大小	规格书
23页	1029K
描述
双通道 52MHz 时钟树驱动器

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LMH2191 数据手册

LMH2191

www.ti.com

SNAS485D –JULY 2010–REVISED MAY 2013

LMH2191 Dual Channel 52 MHz Clock Tree Driver

Check for Samples: LMH2191

FEATURES

DESCRIPTION

The LMH2191 is a dual-channel clock tree driver that

supplies a digital system clock to peripherals in

mobile handsets or other applications. It provides a

solution to clocking issues such as limited drive

capability for fanout or longer traces. It also provides

protection of the master clock from varying loads and

frequency pulling effects, isolation from noisy

modules, and crosstalk isolation. It has very low

phase noise which enables it to drive sensitive

modules such as Wireless LAN and Bluetooth.

•

One Input Clock, Two Output Clocks

1.8V Square Wave Clock Outputs

Inverted Clock Outputs

Independent Clock Requests

High Isolation of Supply Noise to Clock Input

High Output-to-Output Isolation

Integrated 1.8V Low-Dropout Regulator

–

Low Output-Noise Voltage

10 mA Load Current

The LMH2191 can be clocked up to 52 MHz and has

an independent clock request pin for each clock

output which allows the peripheral to control the

clock. It features an integrated LDO which provides

an ultra low-noise voltage supply with 10 mA external

load current which can be used to supply the TCXO

or other clock source. The LMH2191 dual clock

distributor is offered in a tiny 1.61 mm x 1.063 mm 8-

bump DSBGA package. Its small size and low supply

current make it ideal for portable applications.

•

EMI Filtering

Ultra Low Standby Current

V_BATRange = 2.5V to 5.5V

8-Bump DSBGA Package

APPLICATIONS

•

Mobile Handsets

Portable Equipment

Typical Application

BAT

1 µF

LMH2191

OUT

1.8V LDO

OUT

A2 CLK1

D2 CLK2

2.2 µF

Peripheral

Clock

Tree

SCLK_IN

Clock

Source

CLK

10 nF

Driver

SERIES

B2 CLK_REQ1

C2 CLK_REQ2

Clock

Request

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.

All trademarks are the property of their respective owners.

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.

12 3 4 5 6 7...23

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与LMH2191相关器件

型号	品牌	获取价格	描述	数据表
LMH2191TME/NOPB	TI	获取价格	双通道 52MHz 时钟树驱动器 \| YFX \| 8 \| -40 to 85
LMH2191TMX/NOPB	TI	获取价格	双通道 52MHz 时钟树驱动器 \| YFX \| 8 \| -40 to 85
LMH2832	TI	获取价格	全差分、双路、1.1GHz 数字可变增益放大器
LMH2832IRHAR	TI	获取价格	全差分、双路、1.1GHz 数字可变增益放大器 \| RHA \| 40 \| -40 to 8
LMH2832IRHAT	TI	获取价格	全差分、双路、1.1GHz 数字可变增益放大器 \| RHA \| 40 \| -40 to 8
LMH32401	TI	获取价格	可编程增益差分输出高速跨阻放大器
LMH32401IRGTR	TI	获取价格	可编程增益、差分输出高速跨阻放大器 \| RGT \| 16 \| -40 to 125
LMH32401IRGTT	TI	获取价格	可编程增益、差分输出高速跨阻放大器 \| RGT \| 16 \| -40 to 125
LMH32401-Q1	TI	获取价格	汽车类可编程增益差分输出高速跨阻放大器
LMH32401YR	TI	获取价格	可编程增益、差分输出高速跨阻放大器 \| Y \| 0 \| -40 to 125

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