LTC6943

更新时间： 2024-09-27 05:44:03

品牌	Logo	应用领域
凌特 - Linear		开关仪表
页数	文件大小	规格书
16页	240K
描述
Micropower, Dual Precision Instrumentation Switched Capacitor Building Block

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LTC6943 数据手册

LTC6943

Micropower, Dual Precision

Instrumentation Switched

Capacitor Building Block

FEATURES

DESCRIPTIO

The LTC^®6943 is a monolithic, charge-balanced, dual

switched capacitor instrumentation building block. A pair

of switches alternately connects an external capacitor to

an input voltage and then connects the charged capacitor

across an output port. The internal switches have a

break-before-make action. An internal clock is provided

and its frequency can be adjusted with an external

capacitor.TheLTC6943canalsobedrivenwithanexternal

CMOS clock.

■

Low Power, I_S= 60µA(Max)

■

Robust, Latch Up Proof

■

Instrumentation Front End with 120dB CMRR

■

Precise, Charge-Balanced Switching

■

Operates from 5V to 18V

■

Internal or External Clock

■

Operates up to 5MHz Clock Rate

■

Two Independent Sections with One Clock

■

Tiny SSOP-16 Package

The LTC6943, when used with low clock frequencies,

provides ultra precision DC functions without requiring

precise external components. Such functions are

differential voltage to single-ended conversion, voltage

inversion, voltage multiplication and division by 2, 3, 4, 5,

etc.

APPLICATIO S

■

Ultra Precision Voltage Inverters, Multipliers

and Dividers

■

V–F and F–V Converters

Sample-and-Hold

Current Sources

■

The LTC6943 is manufactured using Linear Technology’s

enhanced LTCMOS^TMsilicon gate process, and it is func-

tionally compatible with the LTC1043.

■

Precision Instrumentation Amplifiers

, LTC and LT are registered trademarks of Linear Technology Corporation.

LTCMOS is a trademark of Linear Technology Corporation.

TYPICAL APPLICATIO

Precision Voltage Controlled Current Source

with Ground Referred Input and Output

Precision Current Sensing in Supply Rails

INPUT

0V TO 3.7V

LTC2050

POSITIVE OR

NEGATIVE RAIL

–

SHUNT

0.68µF

1/2 LTC6943

1µF

I =

1µF

SHUNT

1µF

1000Ω

OUT

0.01µF

0.001µF

6943 • TA01b

OPERATES FROM A

SINGLE 5V SUPPLY

6943 • TA01a

6943f

12 3 4 5 6 7...16

中文翻译

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