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- Eight-Channel, Isolated, High-Voltage Analog Input Module With ISOW7841 Design
(PDF 1406 KB)
24 Feb 2017 563 views
The TIDA-01333 isolated high voltage analog input module reference design has eight channels supporting both, voltage and current measurement. In addition, 4 channels support common-mode voltages up to ±160V. Isolation of +5V line and the Serial Peripheral Interface (SPI) communication is done in a single chip using the ISOW7841. The design uses ADS8681 which is a 16-bit analog to digital converter (ADC) that can handle input voltages up to ±12.288V. This makes unnecessary any preprocessing of standard input voltages in the industrial space.
- Isolated 5V supply + isolated SPI in one chip
- Switching between voltage and current measurement for every channel
- 4 channels with common-mode voltage of up to ±160V
- 100MOhm input impedance
- BeagleBone compatible