Datasheet > LF198QML_14

LF198QML_14

更新时间： 2022-10-12 16:15:22

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
20页	994K
描述
Monolithic Sample-and-Hold Circuits

阅读下载

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LF198QML_14 数据手册

February 2005

LF198QML

Monolithic Sample-and-Hold Circuits

General Description

Features

n Operates from 5V to 18V supplies

n Less than 10 µs acquisition time

n TTL, PMOS, CMOS compatible logic input

n 0.5 mV typical hold step at C_h= 0.01 µF

n Low input offset

The LF198 is a monolithic sample-and-hold circuit which

utilizes BI-FET technology to obtain ultra-high dc accuracy

with fast acquisition of signal and low droop rate. Operating

as a unity gain follower, dc gain accuracy is 0.002% typical

and acquisition time is as low as 6 µs to 0.01%. A bipolar

input stage is used to achieve low offset voltage and wide

bandwidth. Input offset adjust is accomplished with a single

pin, and does not degrade input offset drift. The wide band-

width allows the LF198 to be included inside the feedback

loop of 1 MHz op amps without having stability problems.

Input impedance of 10¹⁰Ω allows high source impedances to

be used without degrading accuracy.

n 0.002% gain accuracy

n Low output noise in hold mode

n Input characteristics do not change during hold mode

n High supply rejection ratio in sample or hold

n Wide bandwidth

Logic inputs on the LF198 are fully differential with low input

current, allowing direct connection to TTL, PMOS, and

CMOS. Differential threshold is 1.4V. The LF198 will operate

from 5V to 18V supplies.

P-channel junction FET’s are combined with bipolar devices

in the output amplifier to give droop rates as low as 5 mV/min

with a 1 µF hold capacitor. The JFET’s have much lower

noise than MOS devices used in previous designs and do

not exhibit high temperature instabilities. The overall design

guarantees no feed-through from input to output in the hold

mode, even for input signals equal to the supply voltages.

Ordering Information

NSC Part Number

JAN Part Number

5962–8760801GA

5962–8760801VZA

5962–8760801QZA

NSC Package Number

H08C

Package Description

8LD Metal Can

LF198H/883

LF198WG-QMLV

LF198WG/883

WG14A

14LD Ceramic SOIC

WG14A

Connection Diagrams

Small-Outline Package

Metal Can Package

20122215

See NS Package Number WG14A

20122214

See NS Package Number H08C

DS201222

www.national.com

123 4 5 6 7...20

下载PDF

与LF198QML_14相关器件

型号	品牌	描述	获取价格	数据表
LF198QML-SP	TI	Monolithic Sample-and-Hold Circuits	获取价格
LF198WG/883	TI	LF198QML Monolithic Sample-and-Hold Circuits	获取价格
LF198WG-MLS	NSC	SAMPLE AND HOLD AMPLIFIER, 20us ACQUISITION TIME, CDSO14, CERAMIC, SOIC-14	获取价格
LF198WG-QMLV	TI	LF198QML Monolithic Sample-and-Hold Circuits	获取价格
LF1OX	ETC	PATCHCORD 1/4" ORANGE 1FT	获取价格
LF1PX	ETC	PATCHCORD 1/4" PURPLE 1FT	获取价格