LF398A

更新时间： 2024-01-15 10:47:58

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
15页	564K
描述
LF198/LF298/LF398, LF198A/LF398A Monolithic Sample-and-Hold Circuits

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技术参数
数据手册

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LF398A 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	SOIC	包装说明：	SOP,
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.33.00.01	风险等级：	5.64
最长采集时间：	6 µs	放大器类型：	SAMPLE AND HOLD CIRCUIT
JESD-30 代码：	R-PDSO-G	JESD-609代码：	e0
功能数量：	1	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	认证状态：	Not Qualified
采样并保持/跟踪并保持：	SAMPLE	子类别：	Sample and Hold Circuit
表面贴装：	YES	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	GULL WING	端子位置：	DUAL
Base Number Matches：	1

LF398A 数据手册

Typical Applications (Continued)

Differential Hold

Capacitor Hysteresis Compensation

DS005692-56

Adjust for amplitude

DS005692-57

Definition of Terms

Hold Step: The voltage step at the output of the sample and

hold when switching from sample mode to hold mode with a

steady (dc) analog input voltage. Logic swing is 5V.

Hold Settling Time: The time required for the output to

settle within 1 mV of final value after the “hold” logic com-

mand.

Acquisition Time: The time required to acquire a new ana-

log input voltage with an output step of 10V. Note that acqui-

sition time is not just the time required for the output to settle,

but also includes the time required for all internal nodes to

settle so that the output assumes the proper value when

switched to the hold mode.

Dynamic Sampling Error: The error introduced into the

held output due to a changing analog input at the time the

hold command is given. Error is expressed in mV with a

given hold capacitor value and input slew rate. Note that this

error term occurs even for long sample times.

Aperture Time: The delay required between “Hold” com-

mand and an input analog transition, so that the transition

does not affect the held output.

Gain Error: The ratio of output voltage swing to input volt-

age swing in the sample mode expressed as a per cent dif-

ference.

Connection Diagrams

Dual-In-Line Package

Small-Outline Package

Metal Can Package

DS005692-15

DS005692-11

Order Number LF298M or LF398M

See NS Package Number M14A

Order Number LF398N

or LF398AN

DS005692-14

See NS Package Number N08E

Order Number LF198H,

LF198H/883, LF298H,

LF398H, LF198AH or LF398AH

See NS Package Number H08C

(Note 8)

www.national.com

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