component
AFE4400RHAR
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Texas Instruments Analog Front End (AFE), VQFN-40(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+78@@ -0,0 +1,78 @@+# AFE4400RHAR++**Texas Instruments** · Analog Front End (AFE) · VQFN-40(6x6)++AFE4400RHAR from Texas Instruments, in a VQFN-40(6x6). 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 | INN | input | Receiver analog input pin, connect to photodiode anode. |+| 2 | INP | input | Receiver analog input pin, connect to photodiode cathode. |+| 3 | RX_ANA_GND | power_in | Rx analog ground pin, connect to common board ground. |+| 4 | VCM | output | Input common-mode voltage output reference; connect 1 kΩ series resistor and 10 nF decoupling capacitor to ground for biasing and shielding. |+| 5 | DNC | unconnected | Do not connect; leave as open circuit. |+| 6 | DNC | unconnected | Do not connect; leave as open circuit. |+| 7 | BG | power_out | Internal bandgap reference voltage output; connect 2.2 µF decoupling capacitor to ground. |+| 8 | VSS | power_in | Substrate ground pin, connect to common board ground. |+| 9 | TX_REF | power_out | Transmitter reference voltage output (0.75 V default); connect 2.2 µF decoupling capacitor to ground. |+| 10 | DNC | unconnected | Do not connect; leave as open circuit. |+| 11 | TX_CTRL_SUP | power_in | Transmit controller supply pin (3.0 V to 5.25 V); connect 0.1 µF decoupling capacitor to ground. |+| 12 | LED_DRV_GND | power_in | LED driver ground pin for H-bridge, connect to common board ground. |+| 13 | LED_DRV_GND | power_in | LED driver ground pin for H-bridge, connect to common board ground. |+| 14 | TXN | output | LED driver analog output (H-bridge output B); connect to LED. |+| 15 | TXP | output | LED driver analog output (H-bridge output A); connect to LED. |+| 16 | LED_DRV_GND | power_in | LED driver ground pin for H-bridge, connect to common board ground. |+| 17 | LED_DRV_SUP | power_in | LED driver supply pin for H-bridge (3.0 V to 5.25 V), capable of supplying large LED current. |+| 18 | LED_DRV_SUP | power_in | LED driver supply pin for H-bridge (3.0 V to 5.25 V), capable of supplying large LED current. |+| 19 | RX_DIG_GND | power_in | Rx digital ground pin, connect to common board ground. |+| 20 | AFE_PDN | input | AFE power-down input (active low); can be connected to microcontroller port pin. |+| 21 | DIAG_END | output | Diagnostic completion status output signal; can be connected to microcontroller port pin. |+| 22 | LED_ALM | output | LED cable fault detection alarm output signal; can be connected to microcontroller port pin. |+| 23 | PD_ALM | output | Photodiode sensor or cable fault detection alarm output signal; can be connected to microcontroller port pin. |+| 24 | SCLK | input | SPI serial clock input pin with Schmitt-triggered input. |+| 25 | SPISOMI | output | SPI serial data output pin (Master In Slave Out / slave output). |+| 26 | SPISIMO | input | SPI serial data input pin (Master Out Slave In / slave input). |+| 27 | SPISTE | input | SPI serial interface enable (chip select) input pin. |+| 28 | ADC_RDY | output | ADC conversion completion indicator output signal; can be connected to microcontroller interrupt input. |+| 29 | RESET | input | AFE reset input (active low); can be connected to microcontroller port pin. |+| 30 | CLKOUT | output | Buffered 4 MHz output clock from internal crystal oscillator; can be connected to microcontroller clock input. |+| 31 | RX_DIG_SUP | power_in | Rx digital supply pin (2.0 V to 3.6 V); connect 0.1 µF decoupling capacitor to ground. |+| 32 | RX_DIG_GND | power_in | Rx digital ground pin, connect to common board ground. |+| 33 | RX_ANA_SUP | power_in | Rx analog supply pin (2.0 V to 3.6 V); connect 0.1 µF decoupling capacitor to ground. |+| 34 | DNC | unconnected | Do not connect; leave as open circuit. |+| 35 | DNC | unconnected | Do not connect; leave as open circuit. |+| 36 | RX_ANA_GND | power_in | Rx analog ground pin, connect to common board ground. |+| 37 | XOUT | output | Crystal oscillator output pin; connect external 8 MHz crystal with load capacitor to ground. |+| 38 | XIN | input | Crystal oscillator input pin; connect external 8 MHz crystal with load capacitor to ground. |+| 39 | RX_ANA_SUP | power_in | Rx analog supply pin (2.0 V to 3.6 V); connect 0.1 µF decoupling capacitor to ground. |+| 40 | RX_ANA_GND | power_in | Rx analog ground pin, connect to common board ground. |+| 41 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | VQFN-40(6x6) |+| Category | Data Acquisition |+| Pins | 41 |++## CAD (KiCad official)++- Symbol: `AFE4400RHAR`+- Footprint: `Package_DFN_QFN:QFN-40-1EP_6x6mm_P0.5mm_EP4.6x4.6mm`+- 3D model: VQFN-40(6x6) (KiCad packages3D, STEP)+- 3D model files: `afe4400rhar-etched.step` / `afe4400rhar-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `afe4400rhar.step` / `afe4400rhar.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/afe4400) (84 pp, sha256 `d0befbf8c7df9113`, retrieved 2026-09-18, 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/afe4400rhar-datasheet.pdf)
page.jsonadded+342@@ -0,0 +1,342 @@+{+ "slug": "afe4400rhar",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Analog Front End (AFE), VQFN-40(6x6). Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "data acquisition",+ "afe4400rhar",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "afe4400rhar.kicad_sym",+ "afe4400rhar.kicad_mod",+ "afe4400rhar.glb",+ "afe4400rhar.step",+ "afe4400rhar.lbr",+ "docs/hero.png",+ "docs/afe4400rhar-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "AFE4400RHAR",+ "manufacturer": "Texas Instruments",+ "package": "VQFN-40(6x6)",+ "pin_count": 41,+ "category": "Data Acquisition",+ "subcategory": "Analog Front End (AFE)",+ "datasheet": "https://www.ti.com/cn/lit/gpn/afe4400",+ "parts": {+ "symbol": "afe4400rhar.kicad_sym",+ "footprint": "afe4400rhar.kicad_mod",+ "model_3d": "afe4400rhar-etched.glb",+ "model_3d_plain": "afe4400rhar.glb",+ "model_3d_step": "afe4400rhar-etched.step",+ "model_3d_step_plain": "afe4400rhar.step",+ "lbr": "afe4400rhar.lbr"+ },+ "distributor_links": {+ "lcsc": "C918793"+ },+ "pins": [+ {+ "number": "1",+ "name": "INN",+ "type": "input",+ "description": "Receiver analog input pin, connect to photodiode anode."+ },+ {+ "number": "2",+ "name": "INP",+ "type": "input",+ "description": "Receiver analog input pin, connect to photodiode cathode."+ },+ {+ "number": "3",+ "name": "RX_ANA_GND",+ "type": "power_in",+ "description": "Rx analog ground pin, connect to common board ground."+ },+ {+ "number": "4",+ "name": "VCM",+ "type": "output",+ "description": "Input common-mode voltage output reference; connect 1 kΩ series resistor and 10 nF decoupling capacitor to ground for biasing and shielding."+ },+ {+ "number": "5",+ "name": "DNC",+ "type": "unconnected",+ "description": "Do not connect; leave as open circuit."+ },+ {+ "number": "6",+ "name": "DNC",+ "type": "unconnected",+ "description": "Do not connect; leave as open circuit."+ },+ {+ "number": "7",+ "name": "BG",+ "type": "power_out",+ "description": "Internal bandgap reference voltage output; connect 2.2 µF decoupling capacitor to ground."+ },+ {+ "number": "8",+ "name": "VSS",+ "type": "power_in",+ "description": "Substrate ground pin, connect to common board ground."+ },+ {+ "number": "9",+ "name": "TX_REF",+ "type": "power_out",+ "description": "Transmitter reference voltage output (0.75 V default); connect 2.2 µF decoupling capacitor to ground."+ },+ {+ "number": "10",+ "name": "DNC",+ "type": "unconnected",+ "description": "Do not connect; leave as open circuit."+ },+ {+ "number": "11",+ "name": "TX_CTRL_SUP",+ "type": "power_in",+ "description": "Transmit controller supply pin (3.0 V to 5.25 V); connect 0.1 µF decoupling capacitor to ground."+ },+ {+ "number": "12",+ "name": "LED_DRV_GND",+ "type": "power_in",+ "description": "LED driver ground pin for H-bridge, connect to common board ground."+ },+ {+ "number": "13",+ "name": "LED_DRV_GND",+ "type": "power_in",+ "description": "LED driver ground pin for H-bridge, connect to common board ground."+ },+ {+ "number": "14",+ "name": "TXN",+ "type": "output",+ "description": "LED driver analog output (H-bridge output B); connect to LED."+ },+ {+ "number": "15",+ "name": "TXP",+ "type": "output",+ "description": "LED driver analog output (H-bridge output A); connect to LED."+ },+ {+ "number": "16",+ "name": "LED_DRV_GND",+ "type": "power_in",+ "description": "LED driver ground pin for H-bridge, connect to common board ground."+ },+ {+ "number": "17",+ "name": "LED_DRV_SUP",+ "type": "power_in",+ "description": "LED driver supply pin for H-bridge (3.0 V to 5.25 V), capable of supplying large LED current."+ },+ {+ "number": "18",+ "name": "LED_DRV_SUP",+ "type": "power_in",+ "description": "LED driver supply pin for H-bridge (3.0 V to 5.25 V), capable of supplying large LED current."+ },+ {+ "number": "19",+ "name": "RX_DIG_GND",+ "type": "power_in",+ "description": "Rx digital ground pin, connect to common board ground."+ },+ {+ "number": "20",+ "name": "AFE_PDN",+ "type": "input",+ "description": "AFE power-down input (active low); can be connected to microcontroller port pin."+ },+ {+ "number": "21",+ "name": "DIAG_END",+ "type": "output",+ "description": "Diagnostic completion status output signal; can be connected to microcontroller port pin."+ },+ {+ "number": "22",+ "name": "LED_ALM",+ "type": "output",+ "description": "LED cable fault detection alarm output signal; can be connected to microcontroller port pin."+ },+ {+ "number": "23",+ "name": "PD_ALM",+ "type": "output",+ "description": "Photodiode sensor or cable fault detection alarm output signal; can be connected to microcontroller port pin."+ },+ {+ "number": "24",+ "name": "SCLK",+ "type": "input",+ "description": "SPI serial clock input pin with Schmitt-triggered input."+ },+ {+ "number": "25",+ "name": "SPISOMI",+ "type": "output",+ "description": "SPI serial data output pin (Master In Slave Out / slave output)."+ },+ {+ "number": "26",+ "name": "SPISIMO",+ "type": "input",+ "description": "SPI serial data input pin (Master Out Slave In / slave input)."+ },+ {+ "number": "27",+ "name": "SPISTE",+ "type": "input",+ "description": "SPI serial interface enable (chip select) input pin."+ },+ {+ "number": "28",+ "name": "ADC_RDY",+ "type": "output",+ "description": "ADC conversion completion indicator output signal; can be connected to microcontroller interrupt input."+ },+ {+ "number": "29",+ "name": "RESET",+ "type": "input",+ "description": "AFE reset input (active low); can be connected to microcontroller port pin."+ },+ {+ "number": "30",+ "name": "CLKOUT",+ "type": "output",+ "description": "Buffered 4 MHz output clock from internal crystal oscillator; can be connected to microcontroller clock input."+ },+ {+ "number": "31",+ "name": "RX_DIG_SUP",+ "type": "power_in",+ "description": "Rx digital supply pin (2.0 V to 3.6 V); connect 0.1 µF decoupling capacitor to ground."+ },+ {+ "number": "32",+ "name": "RX_DIG_GND",+ "type": "power_in",+ "description": "Rx digital ground pin, connect to common board ground."+ },+ {+ "number": "33",+ "name": "RX_ANA_SUP",+ "type": "power_in",+ "description": "Rx analog supply pin (2.0 V to 3.6 V); connect 0.1 µF decoupling capacitor to ground."+ },+ {+ "number": "34",+ "name": "DNC",+ "type": "unconnected",+ "description": "Do not connect; leave as open circuit."+ },+ {+ "number": "35",+ "name": "DNC",+ "type": "unconnected",+ "description": "Do not connect; leave as open circuit."+ },+ {+ "number": "36",+ "name": "RX_ANA_GND",+ "type": "power_in",+ "description": "Rx analog ground pin, connect to common board ground."+ },+ {+ "number": "37",+ "name": "XOUT",+ "type": "output",+ "description": "Crystal oscillator output pin; connect external 8 MHz crystal with load capacitor to ground."+ },+ {+ "number": "38",+ "name": "XIN",+ "type": "input",+ "description": "Crystal oscillator input pin; connect external 8 MHz crystal with load capacitor to ground."+ },+ {+ "number": "39",+ "name": "RX_ANA_SUP",+ "type": "power_in",+ "description": "Rx analog supply pin (2.0 V to 3.6 V); connect 0.1 µF decoupling capacitor to ground."+ },+ {+ "number": "40",+ "name": "RX_ANA_GND",+ "type": "power_in",+ "description": "Rx analog ground pin, connect to common board ground."+ },+ {+ "number": "41",+ "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": [+ "extractor flagged: Crystal oscillator pins (XIN/XOUT) may be bidirectional in Pierce oscillator configuration rather th; VCM reference output could alternatively be classified as power_out rather than output, depending on",+ "exposed pad 41 added from the footprint"+ ],+ "pages_sent": 84,+ "cost_usd": 0.7994,+ "at": "2026-09-18T00:12:57"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/afe4400",+ "pages": 84,+ "sha256": "d0befbf8c7df9113",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 41,+ "described": 41,+ "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]"+ }+}