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AD8331ARQZ-R7
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Analog Devices Low Noise Amplifiers (LNA) - RF, QSOP-20-150mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+57@@ -0,0 +1,57 @@+# AD8331ARQZ-R7++**Analog Devices** · Low Noise Amplifiers (LNA) - RF · QSOP-20-150mil++AD8331ARQZ-R7 from Analog Devices, in a QSOP-20-150mil. 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 | LMD | passive | LNA bias bypass pin; connect 18-22 nF capacitor to ground for mid-supply high-frequency bypassing |+| 2 | INH | input | LNA single-ended input, AC-coupled; accepts ±275 mV input signal range |+| 3 | VPSL | power_in | LNA 5 V power supply; bypass with 0.1 µF capacitor to COML |+| 4 | LON | output | LNA inverting output, 19 dB differential gain, 5 Ω impedance; drive RIZ feedback resistor for input impedance matching |+| 5 | LOP | output | LNA non-inverting output, 19 dB differential gain, 5 Ω impedance; AC-couple through 0.1 µF capacitor to VIP |+| 6 | COML | power_in | LNA ground; connect to PCB ground plane and LMD bypass capacitor |+| 7 | VIP | input | VGA non-inverting input, 100 Ω differential impedance; AC-coupled from LOP through 0.1 µF capacitor |+| 8 | VIN | power_in | VGA inverting input, 100 Ω differential impedance; AC-coupled from LON through 0.1 µF capacitor |+| 9 | MODE | input | Gain slope select logic input; low selects ascending mode (50 dB/V), high selects descending mode (−50 dB/V) where available |+| 10 | GAIN | input | Gain control voltage input, 40 mV to 1.0 V range; 50 dB/V scale provides ±48 dB total gain adjustment; 10 MΩ input impedance |+| 11 | VCM | input | VGA common-mode voltage reference; default 2.5 V, externally adjustable 1.5 V to 3.5 V; bypass with 0.1 µF and 1 nF capacitors in parallel |+| 12 | RCLMP | passive | Output clamp level resistor connection; connect resistor to ground to program output voltage clamp threshold, 0.5 V to 4.4 V p-p range |+| 13 | HILO | input | Gain range select logic input; low selects LO mode (−4.5 to 43.5 dB), high selects HI mode (7.5 to 55.5 dB) |+| 14 | VPOS | power_in | VGA 5 V power supply; bypass with 0.1 µF capacitor to COMM; separate supply rail from LNA VPSL |+| 15 | VOH | output | VGA non-inverting differential output, 1 Ω impedance; 2.5 V common mode ±1.125 V swing capability |+| 16 | VOL | output | VGA inverting differential output, 1 Ω impedance; 2.5 V common mode ±1.125 V swing capability |+| 17 | COMM | power_in | VGA ground; connect to PCB ground plane for output and supply return current |+| 18 | ENBV | input | VGA enable logic input; high enables VGA, low disables for reduced quiescent current; 40 kΩ input impedance |+| 19 | ENBL | input | LNA enable logic input; high enables LNA, low disables for reduced quiescent current; 25 kΩ input impedance |+| 20 | COMM | power_in | VGA ground; secondary ground connection for output return path current distribution |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Analog Devices |+| Package | QSOP-20-150mil |+| Category | RF And Wireless |+| Pins | 20 |++## CAD (KiCad official)++- Symbol: `AD8331ARQZ-R7`+- Footprint: `Package_SO:QSOP-20_3.9x8.7mm_P0.635mm`+- 3D model: QSOP-20-150mil (KiCad packages3D, STEP)+- 3D model files: `ad8331arqz-r7-etched.step` / `ad8331arqz-r7-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ad8331arqz-r7.step` / `ad8331arqz-r7.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/8588918182099107840) (56 pp, sha256 `59fd153ca71b5bca`, retrieved 2026-09-22, 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/ad8331arqz-r7-datasheet.pdf)
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connect 18-22 nF capacitor to ground for mid-supply high-frequency bypassing"+ },+ {+ "number": "2",+ "name": "INH",+ "type": "input",+ "description": "LNA single-ended input, AC-coupled; accepts ±275 mV input signal range"+ },+ {+ "number": "3",+ "name": "VPSL",+ "type": "power_in",+ "description": "LNA 5 V power supply; bypass with 0.1 µF capacitor to COML"+ },+ {+ "number": "4",+ "name": "LON",+ "type": "output",+ "description": "LNA inverting output, 19 dB differential gain, 5 Ω impedance; drive RIZ feedback resistor for input impedance matching"+ },+ {+ "number": "5",+ "name": "LOP",+ "type": "output",+ "description": "LNA non-inverting output, 19 dB differential gain, 5 Ω impedance; AC-couple through 0.1 µF capacitor to VIP"+ },+ {+ "number": "6",+ "name": "COML",+ "type": "power_in",+ "description": "LNA ground; connect to PCB ground plane and LMD bypass capacitor"+ },+ {+ "number": "7",+ "name": "VIP",+ "type": "input",+ "description": "VGA non-inverting input, 100 Ω differential impedance; AC-coupled from LOP through 0.1 µF capacitor"+ },+ {+ "number": "8",+ "name": "VIN",+ "type": "power_in",+ "description": "VGA inverting input, 100 Ω differential impedance; AC-coupled from LON through 0.1 µF capacitor"+ },+ {+ "number": "9",+ "name": "MODE",+ "type": "input",+ "description": "Gain slope select logic input; low selects ascending mode (50 dB/V), high selects descending mode (−50 dB/V) where available"+ },+ {+ "number": "10",+ "name": "GAIN",+ "type": "input",+ "description": "Gain control voltage input, 40 mV to 1.0 V range; 50 dB/V scale provides ±48 dB total gain adjustment; 10 MΩ input impedance"+ },+ {+ "number": "11",+ "name": "VCM",+ "type": "input",+ "description": "VGA common-mode voltage reference; default 2.5 V, externally adjustable 1.5 V to 3.5 V; bypass with 0.1 µF and 1 nF capacitors in parallel"+ },+ {+ "number": "12",+ "name": "RCLMP",+ "type": "passive",+ "description": "Output clamp level resistor connection; connect resistor to ground to program output voltage clamp threshold, 0.5 V to 4.4 V p-p range"+ },+ {+ "number": "13",+ "name": "HILO",+ "type": "input",+ "description": "Gain range select logic input; low selects LO mode (−4.5 to 43.5 dB), high selects HI mode (7.5 to 55.5 dB)"+ },+ {+ "number": "14",+ "name": "VPOS",+ "type": "power_in",+ "description": "VGA 5 V power supply; bypass with 0.1 µF capacitor to COMM; separate supply rail from LNA VPSL"+ },+ {+ "number": "15",+ "name": "VOH",+ "type": "output",+ "description": "VGA non-inverting differential output, 1 Ω impedance; 2.5 V common mode ±1.125 V swing capability"+ },+ {+ "number": "16",+ "name": "VOL",+ "type": "output",+ "description": "VGA inverting differential output, 1 Ω impedance; 2.5 V common mode ±1.125 V swing capability"+ },+ {+ "number": "17",+ "name": "COMM",+ "type": "power_in",+ "description": "VGA ground; connect to PCB ground plane for output and supply return current"+ },+ {+ "number": "18",+ "name": "ENBV",+ "type": "input",+ "description": "VGA enable logic input; high enables VGA, low disables for reduced quiescent current; 40 kΩ input impedance"+ },+ {+ "number": "19",+ "name": "ENBL",+ "type": "input",+ "description": "LNA enable logic input; high enables LNA, low disables for reduced quiescent current; 25 kΩ input impedance"+ },+ {+ "number": "20",+ "name": "COMM",+ "type": "power_in",+ "description": "VGA ground; secondary ground connection for output return path current distribution"+ }+ ],+ "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": [],+ "pages_sent": 56,+ "cost_usd": 0.6129,+ "at": "2026-09-22T14:01:15"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588918182099107840",+ "pages": 56,+ "sha256": "59fd153ca71b5bca",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 20,+ "described": 20,+ "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]"+ }+}