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LF198JAN PDF预览

LF198JAN

更新时间: 2024-02-02 22:39:32
品牌 Logo 应用领域
德州仪器 - TI 采样保持电路
页数 文件大小 规格书
19页 966K
描述
LF198JAN Monolithic Sample-and-Hold Circuits

LF198JAN 技术参数

是否Rohs认证: 不符合生命周期:Transferred
零件包装代码:SOIC包装说明:CERAMIC, SOIC-14
针数:14Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.24最长采集时间:25 µs
标称采集时间:20 µs放大器类型:SAMPLE AND HOLD CIRCUIT
最大模拟输入电压:11.5 V最小模拟输入电压:-11.5 V
JESD-30 代码:R-CDSO-G14JESD-609代码:e0
湿度敏感等级:1负供电电压上限:-18 V
标称负供电电压 (Vsup):-15 V功能数量:1
端子数量:14最高工作温度:125 °C
最低工作温度:-55 °C封装主体材料:CERAMIC, METAL-SEALED COFIRED
封装代码:SOP封装等效代码:SOP14,.4
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):260电源:+-15 V
认证状态:Not Qualified采样并保持/跟踪并保持:SAMPLE
筛选级别:MIL-PRF-38535 Class V座面最大高度:2.58 mm
子类别:Sample and Hold Circuits最大压摆率:6.5 mA
供电电压上限:18 V标称供电电压 (Vsup):15 V
表面贴装:YES技术:BIPOLAR
温度等级:MILITARY端子面层:Tin/Lead (Sn/Pb)
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:40
宽度:6.35 mmBase Number Matches:1

LF198JAN 数据手册

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February 2005  
LF198JAN  
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 Ch = 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 1010allows 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  
n Space Qualified  
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.  
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.  
Ordering Information  
NSC Part Number  
JAN Part Number  
JM38510/12501BGA  
JM38510/12501SGA  
NSC Package Number  
Package Description  
8LD Metal Can  
JL198BGA  
H08C  
H08C  
JL198SGA  
8LD Metal Can  
Connection Diagrams  
Metal Can Package  
20128114  
See NS Package Number H08C  
© 2005 National Semiconductor Corporation  
DS201281  
www.national.com  

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