component
AD8232ACPZ-RL
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Analog Devices Analog Front End (AFE), LFCSP-20(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+58@@ -0,0 +1,58 @@+# AD8232ACPZ-RL++**Analog Devices** · Analog Front End (AFE) · LFCSP-20(4x4)++AD8232ACPZ-RL from Analog Devices, in a LFCSP-20(4x4). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | HPDRIVE | output | High-pass drive output connected to the first high-pass filter capacitor to maintain HPSENSE at reference voltage level. |+| 2 | +IN | input | Instrumentation amplifier positive input typically connected to the left arm (LA) electrode. |+| 3 | −IN | input | Instrumentation amplifier negative input typically connected to the right arm (RA) electrode. |+| 4 | RLDFB | input | Right leg drive feedback input for the right leg drive circuit with integrator capacitor connection. |+| 5 | RLD | output | Right leg drive output for connection to the driven electrode with current limited to less than 10 μA. |+| 6 | SW | output | Fast recovery switch output connected to the second high-pass filter output for rapid recovery when electrode connects. |+| 7 | OPAMP+ | input | Op-amp non-inverting input for analog filtering and gain configuration. |+| 8 | REFOUT | output | Reference voltage buffer output serving as virtual ground for all circuit reference points. |+| 9 | OPAMP− | input | Op-amp inverting input for analog filtering and gain configuration. |+| 10 | OUT | output | Op-amp output providing fully conditioned ECG signal suitable for ADC input connection. |+| 11 | LOD− | output | Lead-off detector output high when −IN electrode disconnects in DC mode; always low in AC mode. |+| 12 | LOD+ | output | Lead-off detector output high when +IN electrode disconnects in DC mode or any electrode disconnects in AC mode. |+| 13 | SDN | input | Shutdown control input; drive low to enter low-power shutdown mode with current less than 200 nA. |+| 14 | AC/DC | input | Lead-off detection mode control input; low for DC mode, high for AC mode selection. |+| 15 | FR | input | Fast recovery control input; drive high to enable fast recovery mode for accelerated filter settling. |+| 16 | GND | power_in | Power ground connection referenced for all signal measurements. |+| 17 | +VS | power_in | Power supply pin with operating range 2.0 V to 3.5 V and quiescent current 170 µA typical. |+| 18 | REFIN | input | Reference voltage buffer high-impedance input for setting the virtual ground voltage level. |+| 19 | IAOUT | output | Instrumentation amplifier output with 100 V/V gain and DC blocking capability up to ±300 mV. |+| 20 | HPSENSE | input | High-pass detection input connected to RC junction that sets DC blocking circuit cutoff frequency. |+| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Analog Devices |+| Package | LFCSP-20(4x4) |+| Category | Data Acquisition |+| Pins | 21 |++## CAD (KiCad official)++- Symbol: `AD8232ACPZ-RL`+- Footprint: `Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm`+- 3D model: LFCSP-20(4x4) (KiCad packages3D, STEP)+- 3D model files: `ad8232acpz-rl-etched.step` / `ad8232acpz-rl-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ad8232acpz-rl.step` / `ad8232acpz-rl.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Analog Devices datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588886018342989825) (28 pp, sha256 `a175b6ab6c41a2d2`, retrieved 2026-09-21, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/ad8232acpz-rl-datasheet.pdf)
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always low in AC mode."+ },+ {+ "number": "12",+ "name": "LOD+",+ "type": "output",+ "description": "Lead-off detector output high when +IN electrode disconnects in DC mode or any electrode disconnects in AC mode."+ },+ {+ "number": "13",+ "name": "SDN",+ "type": "input",+ "description": "Shutdown control input; drive low to enter low-power shutdown mode with current less than 200 nA."+ },+ {+ "number": "14",+ "name": "AC/DC",+ "type": "input",+ "description": "Lead-off detection mode control input; low for DC mode, high for AC mode selection."+ },+ {+ "number": "15",+ "name": "FR",+ "type": "input",+ "description": "Fast recovery control input; drive high to enable fast recovery mode for accelerated filter settling."+ },+ {+ "number": "16",+ "name": "GND",+ "type": "power_in",+ "description": "Power ground connection referenced for all signal measurements."+ },+ {+ "number": "17",+ "name": "+VS",+ "type": "power_in",+ "description": "Power supply pin with operating range 2.0 V to 3.5 V and quiescent current 170 µA typical."+ },+ {+ "number": "18",+ "name": "REFIN",+ "type": "input",+ "description": "Reference voltage buffer high-impedance input for setting the virtual ground voltage level."+ },+ {+ "number": "19",+ "name": "IAOUT",+ "type": "output",+ "description": "Instrumentation amplifier output with 100 V/V gain and DC blocking capability up to ±300 mV."+ },+ {+ "number": "20",+ "name": "HPSENSE",+ "type": "input",+ "description": "High-pass detection input connected to RC junction that sets DC blocking circuit cutoff frequency."+ },+ {+ "number": "21",+ "name": "EP",+ "type": "passive",+ "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-4-6",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "exposed pad 21 added from the footprint",+ "dropped thermal pad ['EP'] absent from footprint"+ ],+ "pages_sent": 28,+ "cost_usd": 0.4314,+ "at": "2026-09-21T21:27:38"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588886018342989825",+ "pages": 28,+ "sha256": "a175b6ab6c41a2d2",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 21,+ "described": 21,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}