This board demonstrates a wired-OR multiplexer (MUX) and a programmable gain amplifier (PGA) application of the OPA837 operational amplifier. These applications are made possible with the high-impedance output of the amplifier and the high-impedance inverting input while in power-down (PD) mode. It is possible to select the output of the MUX or PGA with the onboard dual-inline package (DIP) switches or transistor logic inputs from SMA connectors. The board is single or dual-supply compatible up to 5.25 V. An optional noise filter is included at the output to eliminate broadband noise for PGA designs with lower bandwidth.
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 | Op-Amp in Wired Or Mux Configuration Reference Design Using Disable Pin | Jul. 26, 2018 |
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