Alternative Parts
Overview
Features and Benefits
- Instrumentation Front End with 120dB CMRR
- Precise, Charge-Balanced Switching
- Operates from 3V to 18V
- Internal or External Clock
- Operates up to 5MHz Clock Rate
- Low Power
- Two Independent Sections with One Clock
Product Details
The LTC1043 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 LTC1043 can also be driven with an external CMOS clock.
The LTC1043, 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 LTC1043 can also be used for precise V–F and F–V circuits without trimming, and it is also a building block for switched capacitor filters, oscillators and modulators.
The LTC1043 is manufactured using Linear Technology’s enhanced LTCMOS™ silicon gate process.
Applications
- Precision Instrumentation Amplifiers
- Ultra Precision Voltage Inverters, Multipliers and Dividers
- V–F and F–V Converters
- Sample-and-Hold
- Switched Capacitor Filters
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
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R071 Reliability Data3/26/2018PDF38 K
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AN52 - Linear Technology Magazine Circuit Collection, Volume 12/5/2013PDF185K
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AN45 - Measurement and Control Circuit Collection11/29/2012PDF1M
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AN43 - Bridge Circuits7/10/2012PDF3M
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AN42 - Voltage Reference Circuit Collection2/3/2011PDF1M
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AN28 - Thermocouple Measurement9/20/2010PDF965K
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AN3 - Applications for a Switched-Capacitor Instrumentation Building Block7/8/2010PDF1M
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AN18 - Power Gain Stages for Monolithic Amplifiers6/14/2010PDF2M
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AN14 - Designs for High Performance Voltage-to-Frequency Converters3/26/2010PDF377K
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AN9 - Application Considerations and Circuits for a New Chopper-Stabilized Op Amp3/26/2010PDF610K
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AN7 - Some Techniques for Direct Digitization of Transducer Outputs3/26/2010PDF290K
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AN11 - Designing Linear Circuits for 5V Single Supply Operation3/26/2010PDF224K
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AN92 - Bias Voltage and Current Sense Circuits for Avalanche Photodiodes1/7/2009PDF1M
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AN98 - Signal Sources, Conditioners and Power Circuitry Circuits of the Fall, 20049/4/2008PDF864K
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AN78 - A Collection of Differential to Single-Ended Signal Conditioning Circuits for Use with the LTC2400, a 24-Bit No Latency Delta Sigma ADC in an SO-810/15/2007PDF173K
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AN93 - Instrumentation Applications for a Monolithic Oscillator: A Clock for All Reasons8/20/2007PDF1M
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AN8 - Power Conditioning Techniques for Batteries8/20/2007PDF691K
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AN-105: Current Sense Circuit Collection Making Sense of Current12/1/2005
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DN207 - LTC2400 High Accuracy Differential to Single-Ended Converter for ±5V Supplies6/27/2014PDF74K
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Design Solutions 6 - LTC2400 Differential to Single-Ended Converter for Single 5V Supply This Converter Has High Accuracy, Very Low Offset and Offset Drift, Rail-to-Rail Input Common Mode Range and is Live at Zero4/8/2010PDF60K
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Design Solutions 5 - Low Level, High Accuracy, Bipolar Input Differential to Single-Ended Signal Conversion for 24-Bit A/D Single Supply Differential to Single-Ended Conversion Circuit Amplifies Low Level Bipolar Signals and Maintains the LTC2400's High8/21/2007PDF36K
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Design Solutions 4 - High Accuracy, Differential to Single-Ended Conversion for Wide Range Bipolar Input Signals Bipolar Differential to Single-Ended Converter Drives the LTC2400's Input Rail-to-Rail8/21/2007PDF36K
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Design Solutions 3 - Bipolar Input 24-Bit A/D Converter Accepts ±2.5V Inputs Differential Input 24-Bit A/D Converter Provides Half-Scale Zero for Bipolar Input Signals8/21/2007PDF36K
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Design Solutions 2 - Simple Differential Front-End for the LTC2400 Simple Rail-to-Rail Circuit Converts Differential Signals to Single-Ended Signals and Operates on Single or Dual Supplies Where Resolution Is More Important Than Accuracy8/21/2007PDF34K
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Design Solutions 1 - LTC2400 High Accuracy Differential to Single-Ended Differential to Single-Ended Converter Has Very High Uncalibrated Accuracy and Low Offset and Drift8/21/2007PDF37K
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LTC2400 Differential Bridge Digitizers6/1/1999 LT Journal
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
LTC1043
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
PCN-PDN Information
Support & Discussions
LTC1043 Discussions
RE: LTZ1000A stack-up
23 week(s) ago in Voltage References
Sample & Buy
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