{"schemaVersion":1,"slug":"sample-and-hold-amplifier","name":"Sample-and-hold amplifier","kind":"symbol","abbreviation":"S/H","aliases":["sample hold","track and hold","SHA"],"category":"logic-signals","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Acquires an analogue signal during the documented sampling interval and retains a representation during hold.","description":["Acquires an analogue signal during the documented sampling interval and retains a representation during hold.","On a schematic, identify the analogue input, sample/hold control and storage or timing reference and trace the held analogue output and converter interface. Keep the component tag and signal/reference names consistent across the control drawing, terminal schedule and device documentation.","Hold behaviour is an analogue acquisition function; it differs from digital storage in a latch or flip-flop.","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."],"readingNotes":["Identify the analogue input, sample/hold control and storage or timing reference.","Trace the held analogue output and converter interface."],"drawingChecklist":["Label the analogue input, sample/hold control and storage or timing reference.","Cross-reference the held analogue output and converter interface.","Add the selected device or circuit documentation revision, power/reference connections and project signal convention."],"distinction":"Hold behaviour is an analogue acquisition function; it differs from digital storage in a latch or flip-flop.","facts":[{"label":"Common schematic mnemonic","value":"S/H — descriptive only; project/device documentation defines reference designations."},{"label":"Terminal / interface focus","value":"The analogue input, sample/hold control and storage or timing reference"},{"label":"Artwork scope","value":"Original educational functional/circuit reference; not a selected product pinout."}],"references":[{"sourceId":"pub-electronics-adi-sample-hold","relevance":"Public primary manufacturer documentation establishes the component function or circuit/topology relationship. Preview geometry and drafting explanations are independently authored."}],"related":["positive-edge-d-flip-flop","plc-io"],"artwork":"electronics-analogue-sample-hold","publishedOn":"2026-10-14","updatedOn":"2026-10-14","provenance":"independent-public-research","url":"https://eloragrid.ai/symbols/sample-and-hold-amplifier","illustration":{"url":"https://eloragrid.ai/library/illustrations/sample-and-hold-amplifier.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"pub-electronics-adi-sample-hold","title":"AN-1515: sample-and-hold function using an analogue switch","publisher":"Analog Devices","url":"https://www.analog.com/en/resources/app-notes/an-1515.html","type":"manufacturer","scope":"Public application note establishing the sample-and-hold acquisition function. No complete manufacturer example circuit or component values are reproduced.","checkedOn":"2026-10-14","reuse":"link-only","relevance":"Public primary manufacturer documentation establishes the component function or circuit/topology relationship. Preview geometry and drafting explanations are independently authored."}]}