This reference design showcases a cost-optimized and scalable ADC-based AC/DC binary input module (BIM) architecture with reinforced isolation. The 16 channels of a 10- or 12-bit SAR ADC are used for sensing multiple binary inputs. The op amps, in addition to keeping the cost per-channel low, provide optimal signal conditioning for each input. A digital isolator (basic or reinforced) is used to isolate the host MCU or processor. A provision is available to measure temperature, humidity, and magnetic field for diagnostics. A reinforced isolation DC/DC power supply with configurable output provides the required supply for the binary module.
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Reference design overview and verified performance test data
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | ADC-Based, Digitally-Isolated, Wide-Input, 16-Ch, AC/DC Binary Input Ref. Design (Rev. C) | PDF | HTML | Mar. 01, 2021 |
| White paper | 신뢰할 수 있는 합리적 가격대의 절연 기술 개발과 관련한 고전압 설계 문제의 해결 (Rev. C) | PDF | HTML | May 16, 2024 | |
| White paper | 以可靠且經濟實惠的隔離技術解決高電壓設計挑戰 (Rev. C) | PDF | HTML | Mar. 07, 2024 | |
| White paper | Addressing High-Volt Design Challenges w/ Reliable and Affordable Isolation Tech (Rev. C) | PDF | HTML | Sep. 26, 2023 |
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