component
AFE4490RHAR
Public Made by Adomby adom
Texas Instruments Analog Front End (AFE), VQFN-40(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
← Commit history
README.mdadded+78@@ -0,0 +1,78 @@+# AFE4490RHAR++**Texas Instruments** · Analog Front End (AFE) · VQFN-40(6x6)++AFE4490RHAR 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 input pin to be connected to the photodiode anode. |+| 2 | INP | input | Receiver input pin to be connected to the photodiode cathode. |+| 3 | RX_ANA_GND | power_in | Rx analog supply ground to be connected to common board ground. |+| 4 | VCM | output | Output common-mode voltage (0.9 V typ) to be routed through 1 kΩ series resistor and 10 nF capacitor to ground for shielding of INP and INN traces. |+| 5 | DNC | unconnected | Do not connect; leave this pin as open-circuit. |+| 6 | DNC | unconnected | Do not connect; leave this pin as open-circuit. |+| 7 | BG | output | Bandgap voltage reference decoupling node requiring 2.2 µF capacitor to ground with expected voltage of 1.0 V. |+| 8 | VSS | power_in | Substrate ground to be connected to common board ground. |+| 9 | TX_REF | output | Transmitter reference voltage output (0.75 V default after reset) requiring 2.2 µF decoupling capacitor to ground. |+| 10 | DNC | unconnected | Do not connect; leave this pin as open-circuit. |+| 11 | TX_CTRL_SUP | power_in | Transmit controller supply input (3.0 V to 5.25 V) requiring 0.1 µF decoupling capacitor to ground. |+| 12 | LED_DRV_GND | power_in | LED driver ground pin (H-bridge configuration) to be connected to common board ground. |+| 13 | LED_DRV_GND | power_in | LED driver ground pin (H-bridge configuration) to be connected to common board ground. |+| 14 | TXN | output | LED driver output B (H-bridge) with maximum output voltage not to exceed LED_DRV_SUP + 0.3 V. |+| 15 | TXP | output | LED driver output A (H-bridge) with maximum output voltage not to exceed LED_DRV_SUP + 0.3 V. |+| 16 | LED_DRV_GND | power_in | LED driver ground pin (H-bridge configuration) to be connected to common board ground. |+| 17 | LED_DRV_SUP | power_in | LED driver supply input (3.0 V to 5.25 V depending on LED forward voltage) capable of supplying large LED drive current. |+| 18 | LED_DRV_SUP | power_in | LED driver supply input (3.0 V to 5.25 V depending on LED forward voltage) capable of supplying large LED drive current. |+| 19 | RX_DIG_GND | power_in | Rx digital supply ground to be connected to common board ground. |+| 20 | AFE_PDN | input | AFE power-down control input (active low) to be connected to external microcontroller port pin. |+| 21 | DIAG_END | output | Diagnostics completion output that pulses high at the end of each diagnostics sequence. |+| 22 | LED_ALM | output | LED cable fault alarm output that indicates LED open or short condition. |+| 23 | PD_ALM/ADC_Reset | output | Photodiode fault alarm output that indicates PD sensor or cable fault, with optional ADC reset signal in bypass mode. |+| 24 | SCLK | input | SPI serial clock input for driving data shifting at frequencies up to 16 MHz. |+| 25 | SPISOMI | output | SPI serial output (master in, slave out) with tri-state capability for outputting register contents during read operations. |+| 26 | SPISIMO | input | SPI serial input (master out, slave in) for accepting register address and write data during SPI write operations. |+| 27 | SPISTE | input | SPI chip select input (active low) that enables serial data latching on SCLK rising edges. |+| 28 | ADC_RDY | output | ADC data ready output that pulses high when new ADC conversion results are available. |+| 29 | RESET | input | AFE reset input (active low) requiring minimum 0.5 ms low pulse after supply ramp and stabilization. |+| 30 | CLKOUT | output | Buffered 4-MHz clock output derived from the internal 8-MHz oscillator divided by 2. |+| 31 | RX_DIG_SUP | power_in | Rx digital supply input (2.0 V to 3.6 V) requiring 0.1 µF decoupling capacitor to ground. |+| 32 | RX_DIG_GND | power_in | Rx digital supply ground to be connected to common board ground. |+| 33 | RX_ANA_SUP | power_in | Rx analog supply input (2.0 V to 3.6 V) requiring 0.1 µF decoupling capacitor to ground. |+| 34 | RXOUTN | output | External ADC negative input that outputs filtered analog signal in ADC bypass mode with 0.9 V common mode. |+| 35 | RXOUTP | output | External ADC positive input that outputs filtered analog signal in ADC bypass mode with 0.9 V common mode. |+| 36 | RX_ANA_GND | power_in | Rx analog supply ground to be connected to common board ground. |+| 37 | XOUT | passive | Crystal oscillator output pin for connecting external 8-MHz crystal with appropriate load capacitor as specified by crystal vendor. |+| 38 | XIN | passive | Crystal oscillator input pin for connecting external 8-MHz crystal with appropriate load capacitor as specified by crystal vendor. |+| 39 | RX_ANA_SUP | power_in | Rx analog supply input (2.0 V to 3.6 V) requiring 0.1 µF decoupling capacitor to ground. |+| 40 | RX_ANA_GND | power_in | Rx analog supply ground to be connected 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: `AFE4490RHAR`+- Footprint: `Package_DFN_QFN:QFN-40-1EP_6x6mm_P0.5mm_EP4.6x4.6mm`+- 3D model: VQFN-40(6x6) (KiCad packages3D, STEP)+- 3D model files: `afe4490rhar-etched.step` / `afe4490rhar-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `afe4490rhar.step` / `afe4490rhar.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/afe4490) (98 pp, sha256 `d022ff9bb44482b0`, 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/afe4490rhar-datasheet.pdf)
page.jsonadded+341@@ -0,0 +1,341 @@+{+ "slug": "afe4490rhar",+ "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",+ "afe4490rhar",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "afe4490rhar.kicad_sym",+ "afe4490rhar.kicad_mod",+ "afe4490rhar.glb",+ "afe4490rhar.step",+ "afe4490rhar.lbr",+ "docs/hero.png",+ "docs/afe4490rhar-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "AFE4490RHAR",+ "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/afe4490",+ "parts": {+ "symbol": "afe4490rhar.kicad_sym",+ "footprint": "afe4490rhar.kicad_mod",+ "model_3d": "afe4490rhar-etched.glb",+ "model_3d_plain": "afe4490rhar.glb",+ "model_3d_step": "afe4490rhar-etched.step",+ "model_3d_step_plain": "afe4490rhar.step",+ "lbr": "afe4490rhar.lbr"+ },+ "distributor_links": {+ "lcsc": "C2651608"+ },+ "pins": [+ {+ "number": "1",+ "name": "INN",+ "type": "input",+ "description": "Receiver input pin to be connected to the photodiode anode."+ },+ {+ "number": "2",+ "name": "INP",+ "type": "input",+ "description": "Receiver input pin to be connected to the photodiode cathode."+ },+ {+ "number": "3",+ "name": "RX_ANA_GND",+ "type": "power_in",+ "description": "Rx analog supply ground to be connected to common board ground."+ },+ {+ "number": "4",+ "name": "VCM",+ "type": "output",+ "description": "Output common-mode voltage (0.9 V typ) to be routed through 1 kΩ series resistor and 10 nF capacitor to ground for shielding of INP and INN traces."+ },+ {+ "number": "5",+ "name": "DNC",+ "type": "unconnected",+ "description": "Do not connect; leave this pin as open-circuit."+ },+ {+ "number": "6",+ "name": "DNC",+ "type": "unconnected",+ "description": "Do not connect; leave this pin as open-circuit."+ },+ {+ "number": "7",+ "name": "BG",+ "type": "output",+ "description": "Bandgap voltage reference decoupling node requiring 2.2 µF capacitor to ground with expected voltage of 1.0 V."+ },+ {+ "number": "8",+ "name": "VSS",+ "type": "power_in",+ "description": "Substrate ground to be connected to common board ground."+ },+ {+ "number": "9",+ "name": "TX_REF",+ "type": "output",+ "description": "Transmitter reference voltage output (0.75 V default after reset) requiring 2.2 µF decoupling capacitor to ground."+ },+ {+ "number": "10",+ "name": "DNC",+ "type": "unconnected",+ "description": "Do not connect; leave this pin as open-circuit."+ },+ {+ "number": "11",+ "name": "TX_CTRL_SUP",+ "type": "power_in",+ "description": "Transmit controller supply input (3.0 V to 5.25 V) requiring 0.1 µF decoupling capacitor to ground."+ },+ {+ "number": "12",+ "name": "LED_DRV_GND",+ "type": "power_in",+ "description": "LED driver ground pin (H-bridge configuration) to be connected to common board ground."+ },+ {+ "number": "13",+ "name": "LED_DRV_GND",+ "type": "power_in",+ "description": "LED driver ground pin (H-bridge configuration) to be connected to common board ground."+ },+ {+ "number": "14",+ "name": "TXN",+ "type": "output",+ "description": "LED driver output B (H-bridge) with maximum output voltage not to exceed LED_DRV_SUP + 0.3 V."+ },+ {+ "number": "15",+ "name": "TXP",+ "type": "output",+ "description": "LED driver output A (H-bridge) with maximum output voltage not to exceed LED_DRV_SUP + 0.3 V."+ },+ {+ "number": "16",+ "name": "LED_DRV_GND",+ "type": "power_in",+ "description": "LED driver ground pin (H-bridge configuration) to be connected to common board ground."+ },+ {+ "number": "17",+ "name": "LED_DRV_SUP",+ "type": "power_in",+ "description": "LED driver supply input (3.0 V to 5.25 V depending on LED forward voltage) capable of supplying large LED drive current."+ },+ {+ "number": "18",+ "name": "LED_DRV_SUP",+ "type": "power_in",+ "description": "LED driver supply input (3.0 V to 5.25 V depending on LED forward voltage) capable of supplying large LED drive current."+ },+ {+ "number": "19",+ "name": "RX_DIG_GND",+ "type": "power_in",+ "description": "Rx digital supply ground to be connected to common board ground."+ },+ {+ "number": "20",+ "name": "AFE_PDN",+ "type": "input",+ "description": "AFE power-down control input (active low) to be connected to external microcontroller port pin."+ },+ {+ "number": "21",+ "name": "DIAG_END",+ "type": "output",+ "description": "Diagnostics completion output that pulses high at the end of each diagnostics sequence."+ },+ {+ "number": "22",+ "name": "LED_ALM",+ "type": "output",+ "description": "LED cable fault alarm output that indicates LED open or short condition."+ },+ {+ "number": "23",+ "name": "PD_ALM/ADC_Reset",+ "type": "output",+ "description": "Photodiode fault alarm output that indicates PD sensor or cable fault, with optional ADC reset signal in bypass mode."+ },+ {+ "number": "24",+ "name": "SCLK",+ "type": "input",+ "description": "SPI serial clock input for driving data shifting at frequencies up to 16 MHz."+ },+ {+ "number": "25",+ "name": "SPISOMI",+ "type": "output",+ "description": "SPI serial output (master in, slave out) with tri-state capability for outputting register contents during read operations."+ },+ {+ "number": "26",+ "name": "SPISIMO",+ "type": "input",+ "description": "SPI serial input (master out, slave in) for accepting register address and write data during SPI write operations."+ },+ {+ "number": "27",+ "name": "SPISTE",+ "type": "input",+ "description": "SPI chip select input (active low) that enables serial data latching on SCLK rising edges."+ },+ {+ "number": "28",+ "name": "ADC_RDY",+ "type": "output",+ "description": "ADC data ready output that pulses high when new ADC conversion results are available."+ },+ {+ "number": "29",+ "name": "RESET",+ "type": "input",+ "description": "AFE reset input (active low) requiring minimum 0.5 ms low pulse after supply ramp and stabilization."+ },+ {+ "number": "30",+ "name": "CLKOUT",+ "type": "output",+ "description": "Buffered 4-MHz clock output derived from the internal 8-MHz oscillator divided by 2."+ },+ {+ "number": "31",+ "name": "RX_DIG_SUP",+ "type": "power_in",+ "description": "Rx digital supply input (2.0 V to 3.6 V) requiring 0.1 µF decoupling capacitor to ground."+ },+ {+ "number": "32",+ "name": "RX_DIG_GND",+ "type": "power_in",+ "description": "Rx digital supply ground to be connected to common board ground."+ },+ {+ "number": "33",+ "name": "RX_ANA_SUP",+ "type": "power_in",+ "description": "Rx analog supply input (2.0 V to 3.6 V) requiring 0.1 µF decoupling capacitor to ground."+ },+ {+ "number": "34",+ "name": "RXOUTN",+ "type": "output",+ "description": "External ADC negative input that outputs filtered analog signal in ADC bypass mode with 0.9 V common mode."+ },+ {+ "number": "35",+ "name": "RXOUTP",+ "type": "output",+ "description": "External ADC positive input that outputs filtered analog signal in ADC bypass mode with 0.9 V common mode."+ },+ {+ "number": "36",+ "name": "RX_ANA_GND",+ "type": "power_in",+ "description": "Rx analog supply ground to be connected to common board ground."+ },+ {+ "number": "37",+ "name": "XOUT",+ "type": "passive",+ "description": "Crystal oscillator output pin for connecting external 8-MHz crystal with appropriate load capacitor as specified by crystal vendor."+ },+ {+ "number": "38",+ "name": "XIN",+ "type": "passive",+ "description": "Crystal oscillator input pin for connecting external 8-MHz crystal with appropriate load capacitor as specified by crystal vendor."+ },+ {+ "number": "39",+ "name": "RX_ANA_SUP",+ "type": "power_in",+ "description": "Rx analog supply input (2.0 V to 3.6 V) requiring 0.1 µF decoupling capacitor to ground."+ },+ {+ "number": "40",+ "name": "RX_ANA_GND",+ "type": "power_in",+ "description": "Rx analog supply ground to be connected 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": [+ "exposed pad 41 added from the footprint"+ ],+ "pages_sent": 98,+ "cost_usd": 0.9374,+ "at": "2026-09-21T15:45:36"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/afe4490",+ "pages": 98,+ "sha256": "d022ff9bb44482b0",+ "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]"+ }+}