Datasheet LTC6943 (Analog Devices)

ПроизводительAnalog Devices
ОписаниеMicropower, Dual Precision Instrumentation Switched Capacitor Building Block
Страниц / Страница16 / 1 — FEATURES. DESCRIPTIO. APPLICATIO S. TYPICAL APPLICATIO. Precision Voltage …
Формат / Размер файлаPDF / 250 Кб
Язык документаанглийский

FEATURES. DESCRIPTIO. APPLICATIO S. TYPICAL APPLICATIO. Precision Voltage Controlled Current Source

Datasheet LTC6943 Analog Devices

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Micropower, Dual Precision Instrumentation Switched Capacitor Building Block
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LTC6943 Micropower, Dual Precision Instrumentation Switched Capacitor Building Block
U FEATURES DESCRIPTIO
■ Low Power, IS = 60µA(Max) The LTC®6943 is a monolithic, charge-balanced, dual ■ Robust, Latch Up Proof switched capacitor instrumentation building block. A pair ■ Instrumentation Front End with 120dB CMRR of switches alternately connects an external capacitor to ■ Precise, Charge-Balanced Switching an input voltage and then connects the charged capacitor ■ Operates from 5V to 18V across an output port. The internal switches have a ■ Internal or External Clock break-before-make action. An internal clock is provided ■ Operates up to 5MHz Clock Rate and its frequency can be adjusted with an external ■ Two Independent Sections with One Clock capacitor. The LTC6943 can also be driven with an external ■ Tiny SSOP-16 Package CMOS clock.
U APPLICATIO S
The LTC6943, when used with low clock frequencies, provides ultra precision DC functions without requiring ■ Ultra Precision Voltage Inverters, Multipliers precise external components. Such functions are and Dividers differential voltage to single-ended conversion, voltage ■ V–F and F–V Converters inversion, voltage multiplication and division by 2, 3, 4, 5, ■ Sample-and-Hold etc. ■ Current Sources ■ The LTC6943 is manufactured using Linear Technology’s Precision Instrumentation Amplifiers enhanced LTCMOSTM silicon gate process, and it is func- , LTC and LT are registered trademarks of Linear Technology Corporation. LTCMOS is a trademark of Linear Technology Corporation. tionally compatible with the LTC1043.
U TYPICAL APPLICATIO Precision Voltage Controlled Current Source with Ground Referred Input and Output
5V
Precision Current Sensing in Supply Rails
INPUT 3 5 + 0V TO 3.7V 1 LTC2050 E I 4 – POSITIVE OR 2 NEGATIVE RAIL RSHUNT 0.68µF 1/2 LTC6943 11 12 5V 1k 3 1/2 LTC6943 10 7 6 1µF 1 E µF E I = RSHUNT 9 9 1µF 1µF 1k 10 6 7 12 11 V I IN OUT = 1000Ω 14 15 0.01 15 14 µF 0.001µF 6943 • TA01b OPERATES FROM A SINGLE 5V SUPPLY 6943 • TA01a 6943f 1
Синхронизатор тактового сигнала с двумя цифровыми контурами ФАПЧ AD9546 от Analog Devices