component
LM4871MM
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Texas Instruments Audio Amplifiers, VSSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+44@@ -0,0 +1,44 @@+# LM4871MM++**Texas Instruments** · Audio Amplifiers · VSSOP-8++LM4871MM from Texas Instruments, in a VSSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | SHUTDOWN | input | Shutdown control that turns off the amplifier bias circuitry when a logic high (VDD) is applied, giving 0.6µA typical shutdown current; it must be tied to a definite voltage. |+| 2 | BYPASS | passive | Half-supply bypass node that connects to an external capacitor CB (1.0µF recommended) to ground for PSRR and turn-on click and pop performance. |+| 3 | +IN | input | Non-inverting amplifier input. |+| 4 | -IN | input | Inverting amplifier input that sets the closed-loop gain through Ri and Rf, where AVD = 2*(Rf/Ri). |+| 5 | Vo1 | output | Bridged amplifier output 1, driving one side of the load, 180° out of phase with Vo2. |+| 6 | VDD | power_in | Positive supply input for a supply range of 2.0V to 5.5V (absolute maximum 6.0V), which needs a bypass capacitor placed close to the pin. |+| 7 | GND | power_in | Ground connection. |+| 8 | Vo2 | output | Bridged amplifier output 2, driving the other side of the load, 180° out of phase with Vo1. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | VSSOP-8 |+| Category | Amplifiers/Comparators |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `LM4871MM`+- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`+- 3D model: VSSOP-8 (KiCad packages3D, STEP)+- 3D model files: `lm4871mm-etched.step` / `lm4871mm-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm4871mm.step` / `lm4871mm.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lm4871) (30 pp, sha256 `53dd6f523163b7af`, retrieved 2026-10-08, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (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/lm4871mm-datasheet.pdf)
page.jsonadded+202@@ -0,0 +1,202 @@+{+ "slug": "lm4871mm",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Audio Amplifiers, VSSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "amplifiers-comparators",+ "lm4871mm",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lm4871mm.kicad_sym",+ "lm4871mm.kicad_mod",+ "lm4871mm.glb",+ "lm4871mm.step",+ "lm4871mm.lbr",+ "docs/hero.png",+ "docs/lm4871mm-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "lm4871mm-hero.glb",+ "lm4871mm-hero.overlay.json"+ ],+ "component": {+ "mpn": "LM4871MM",+ "manufacturer": "Texas Instruments",+ "package": "VSSOP-8",+ "pin_count": 8,+ "category": "Amplifiers/Comparators",+ "subcategory": "Audio Amplifiers",+ "datasheet": "https://www.ti.com/cn/lit/gpn/lm4871",+ "parts": {+ "symbol": "lm4871mm.kicad_sym",+ "footprint": "lm4871mm.kicad_mod",+ "model_3d": "lm4871mm-hero.glb",+ "model_3d_plain": "lm4871mm.glb",+ "model_3d_step": "lm4871mm-etched.step",+ "model_3d_step_plain": "lm4871mm.step",+ "lbr": "lm4871mm.lbr"+ },+ "distributor_links": {+ "lcsc": "C2860744",+ "digikey": "LM4871MMTR-ND",+ "mouser": "926-LM4871MM"+ },+ "distributor_check": {+ "checked_at": "2026-10-08T02:13:43Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "LM4871MMTR-ND",+ "status": "found",+ "lifecycle": "Obsolete"+ },+ "mouser": {+ "pn": "926-LM4871MM",+ "status": "found",+ "lifecycle": "Obsolete"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "SHUTDOWN",+ "type": "input",+ "description": "Shutdown control that turns off the amplifier bias circuitry when a logic high (VDD) is applied, giving 0.6µA typical shutdown current; it must be tied to a definite voltage."+ },+ {+ "number": "2",+ "name": "BYPASS",+ "type": "passive",+ "description": "Half-supply bypass node that connects to an external capacitor CB (1.0µF recommended) to ground for PSRR and turn-on click and pop performance."+ },+ {+ "number": "3",+ "name": "+IN",+ "type": "input",+ "description": "Non-inverting amplifier input."+ },+ {+ "number": "4",+ "name": "-IN",+ "type": "input",+ "description": "Inverting amplifier input that sets the closed-loop gain through Ri and Rf, where AVD = 2*(Rf/Ri)."+ },+ {+ "number": "5",+ "name": "Vo1",+ "type": "output",+ "description": "Bridged amplifier output 1, driving one side of the load, 180° out of phase with Vo2."+ },+ {+ "number": "6",+ "name": "VDD",+ "type": "power_in",+ "description": "Positive supply input for a supply range of 2.0V to 5.5V (absolute maximum 6.0V), which needs a bypass capacitor placed close to the pin."+ },+ {+ "number": "7",+ "name": "GND",+ "type": "power_in",+ "description": "Ground connection."+ },+ {+ "number": "8",+ "name": "Vo2",+ "type": "output",+ "description": "Bridged amplifier output 2, driving the other side of the load, 180° out of phase with Vo1."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-sonnet-5-5",+ "primary_mode": "text+vision",+ "consensus_model": "claude-opus-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: The datasheet text does not describe the BYPASS pin type directly. I classified it as passive becaus",+ "vision extraction: provenance cannot be text-verified; needs consensus"+ ],+ "pages_sent": 30,+ "cost_usd": 0.6225,+ "at": "2026-10-08T02:13:28"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/lm4871",+ "pages": 30,+ "sha256": "53dd6f523163b7af",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 8,+ "described": 8,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "lm4871mm.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 3.1,+ 2,+ 0.85+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "353552981eef35cb93635057d4aeb89aef22648c77af6fd095e328bfe6b834bd",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "lm4871mm-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 3.1,+ 2,+ 0.85+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "c8fef6ae5cfc22ab623fb45d8c5259e6a6f138692bad99f237fcdc54258c3c5e",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}