DIFF-AMP
Difference amplifier
Produces an analogue output related to the difference between two input signals with the documented gain/reference arrangement.
Schematic
Symbols · FDA
Fully differential amplifier
Processes an analogue input to provide two complementary output signals around a defined common-mode level.
Schematic · FDA
What it represents
Processes an analogue input to provide two complementary output signals around a defined common-mode level.
On a schematic, identify the input network, output common-mode control and two output terminals and trace the differential output pair and ADC/load interface. Keep the component tag and signal/reference names consistent across the control drawing, terminal schedule and device documentation.
Two output terminals distinguish a fully differential amplifier from a single-ended-output difference amplifier.
The preview is an independently drawn educational functional reference. Add the selected component’s actual power pins, terminal numbers, timing or analogue reference details when producing a construction drawing.
How to read it
- Identify the input network, output common-mode control and two output terminals.
- Trace the differential output pair and ADC/load interface.
Information to show or reference
- Label the input network, output common-mode control and two output terminals.
- Cross-reference the differential output pair and ADC/load interface.
- Add the selected device or circuit documentation revision, power/reference connections and project signal convention.
A distinction that matters
Two output terminals distinguish a fully differential amplifier from a single-ended-output difference amplifier.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
THS4551 — fully differential amplification
Public primary manufacturer documentation establishes the component function or circuit/topology relationship. Preview geometry and drafting explanations are independently authored.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.
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