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  • Technique yields precise calibration of dual-slope ADCs
    Overcome zero-offset and gain errors when using dual-slope ADCs in low-cost instrumentation applications.
    http://www.industrialcontroldesignline.com/howto/205208149
  • Using the Dual Slope A/D converter function in the HT46R7xD-1
    This example shows how the internal Dual Slope ADC function in the HT46R7xD-1 device is used. The Timer is used to set a charge up time after which the same timer is used to measure the discharge time. It is this discharge time that represents the analog signal being measured.
    http://www.holtek.com.tw/english/tech/appnote/uc/pdf/ha0118ev110.pdf
  • Understanding Integrating ADCs
    The following article explains how integrating ADCs work. Discussions include single-slope, dual-slope and multi-slope conversions. Also, an in-depth analysis of the integrating architecture will be discussed. Finally a comparisons against other ADC architectures will aid in the understanding and selection of integrating ADCs.
    http://www.maxim-ic.com/appnotes.cfm/appnote_number/1041/
  • 12-Bit μA-Compatible Analog-to-Digital Converters
    The TC7109A is a 12-bit plus sign, CMOS low power Analog-to-Digital Converter. Only eight passive components and a crystal are required to form a complete dual slope integrating ADC.

    Features

    • TTL Compatible, Byte Organized Tri-State Outputs
    • UART Handshake Mode for simple Serial Data Transmissions
    • Sign Magnitude Coding Format
    • True Differential Signal Input and Differential Reference Input
    • Zero Integrator Cycle for Fast Recovery from Input Overloads
    • Eliminates Cross-Talk in Multiplexed Systems
    • Low Noise: 15μVP-P Typ.
    • Input Current: 1pA Typ.
    • 12-Bit Plus Sign Integrating ADC with Over Range Indication
    • No Zero Adjustment needed

    http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1335&dDocName=en010526
  • ICL7136 Low-Power, 3 1/2 Digit A/D Converter
    The Maxim ICL7136 is a monolithic analog to digital converter with very high input impedance. On-board active components include segment drivers, segment decoders, voltage reference and a clock circuit. The ICL7136 directly drives a non-multiplexed liquid crystal (LCD) display, requiring no external display drive circuitry. Signifficantly reduced power consumption makes the ICL7136 a superior device, especially for portable systems.
    http://www.maxim-ic.com/quick_view2.cfm/qv_pk/1497/t/al

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