INA
Instrumentation amplifier
Amplifies a differential input signal using an instrumentation-amplifier input and gain arrangement.
Schematic
Symbols · DIFF-AMP
Difference amplifier
Produces an analogue output related to the difference between two input signals with the documented gain/reference arrangement.
Schematic · DIFF-AMP
What it represents
Produces an analogue output related to the difference between two input signals with the documented gain/reference arrangement.
On a schematic, identify the two inputs, resistor-ratio or integrated-gain definition and reference terminal and trace the difference signal and its receiving circuit. Keep the component tag and signal/reference names consistent across the control drawing, terminal schedule and device documentation.
A difference amplifier rejects common input content according to its implementation; it does not establish galvanic isolation.
Terminal letters describe electrical roles, not package pin numbers. Check the selected public datasheet for the actual pin assignment, polarity and any internally connected terminals before completing the drawing.
How to read it
- Identify the two inputs, resistor-ratio or integrated-gain definition and reference terminal.
- Trace the difference signal and its receiving circuit.
Information to show or reference
- Label the two inputs, resistor-ratio or integrated-gain definition and reference terminal.
- Cross-reference the difference signal and its receiving circuit.
- Add the selected device or circuit documentation revision, power/reference connections and project signal convention.
A distinction that matters
A difference amplifier rejects common input content according to its implementation; it does not establish galvanic isolation.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
AD8276 — difference 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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