OTA
Operational transconductance amplifier
Produces an output current controlled by its differential input voltage and documented bias arrangement.
Schematic
Symbols · TIA
Transimpedance amplifier
Converts an input current into an output voltage through the documented feedback arrangement.
Schematic · TIA
What it represents
Converts an input current into an output voltage through the documented feedback arrangement.
On a schematic, identify the detector/current input, feedback impedance and input reference and trace the voltage output and receiving acquisition circuit. Keep the component tag and signal/reference names consistent across the control drawing, terminal schedule and device documentation.
A transimpedance amplifier relates current to voltage; a transconductance amplifier relates voltage to current.
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 detector/current input, feedback impedance and input reference.
- Trace the voltage output and receiving acquisition circuit.
Information to show or reference
- Label the detector/current input, feedback impedance and input reference.
- Cross-reference the voltage output and receiving acquisition circuit.
- Add the selected device or circuit documentation revision, power/reference connections and project signal convention.
A distinction that matters
A transimpedance amplifier relates current to voltage; a transconductance amplifier relates voltage to current.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
ADA4530-1 — electrometer and current-to-voltage acquisition
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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