Signal Conditioning Switched Cap Building Blocks

LTC6943 - Micropower, Dual Precision Instrumentation Switched Capacitor Building Block

Features

  • Low Power, IS = 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

Typical Application

LTC6943 Typical Application
LTC6943 Typical Application

Description

The LTC6943 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. The LTC6943 can also be driven with an external CMOS clock.

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.

The LTC6943 is manufactured using Linear Technology’s enhanced LTCMOSTM silicon gate process, and it is functionally compatible with the LTC1043.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

SSOP-16

LTC6943 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC6943CGN SSOP 16 C $4.29 $3.00 View
LTC6943CGN#PBF SSOP 16 C $4.29 $3.00 View
LTC6943CGN#TR SSOP 16 C $3.06 View
LTC6943CGN#TRPBF SSOP 16 C $3.06 View
LTC6943HGN SSOP 16 H $4.91 $3.45 View
LTC6943HGN#PBF SSOP 16 H $4.91 $3.45 View
LTC6943HGN#TR SSOP 16 H $3.51 View
LTC6943HGN#TRPBF SSOP 16 H $3.51 View
LTC6943IGN SSOP 16 I $4.91 $3.45 View
LTC6943IGN#PBF SSOP 16 I $4.91 $3.45 View
LTC6943IGN#TR SSOP 16 I $3.51 View
LTC6943IGN#TRPBF SSOP 16 I $3.51 View
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Click here to view our complete list of demo boards

Applications

  • Ultra Precision Voltage Inverters, Multipliers and Dividers
  • V–F and F–V Converters
  • Sample-and-Hold
  • Current Sources
  • Precision Instrumentation Amplifiers

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