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ADS7949SRTER
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Texas Instruments Analog To Digital Converters (ADC), WQFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+54@@ -0,0 +1,54 @@+# ADS7949SRTER++**Texas Instruments** · Analog To Digital Converters (ADC) · WQFN-16-EP(3x3)++ADS7949SRTER from Texas Instruments, in a WQFN-16-EP(3x3). 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 | GND | power_in | Analog/digital power supply ground; all analog and digital signals are referred with respect to this pin. |+| 2 | AVDD | power_in | Analog ADC power supply; recommended range is 2.7 V to 5.5 V with 3.3 V nominal. |+| 3 | REF | input | Analog ADC positive reference input; decouple this pin with REFGND. |+| 4 | REFGND | power_in | Analog reference return; short to the analog ground plane. |+| 5 | AIN0P | input | Positive analog input for channel 0. |+| 6 | AIN0N | input | Negative analog input for channel 0; the allowable signal swing on this pin is ±0.2 V and this pin can be grounded. |+| 7 | AIN1N | input | Negative analog input for channel 1; the allowable signal swing on this pin is ±0.2 V and this pin can be grounded. |+| 8 | AIN1P | input | Positive analog input for channel 1. |+| 9 | NC | unconnected | Not connected internally; TI recommends externally shorting this pin to GND. |+| 10 | NC | unconnected | Not connected internally; TI recommends externally shorting this pin to GND. |+| 11 | CH SEL | input | Selects the analog input channel (low = channel 0, high = channel 1); TI recommends changing the channel within a one-clock window starting half a clock after the CS falling edge so the multiplexer output settles before sample start. |+| 12 | PDEN | input | Enables the power-down feature if this pin is high at the CS rising edge. |+| 13 | CS | input | Active-low chip-select signal. |+| 14 | SCLK | input | Serial SPI clock input. |+| 15 | SDO | output | Serial data output. |+| 16 | DVDD | power_in | Digital I/O supply; range is 1.65 V to AVDD per the recommended operating conditions. |+| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | WQFN-16-EP(3x3) |+| Category | Data Acquisition |+| Pins | 17 |++## CAD (KiCad official)++- Symbol: `ADS7949SRTER`+- Footprint: `Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm`+- 3D model: WQFN-16-EP(3x3) (KiCad packages3D, STEP)+- 3D model files: `ads7949srter-etched.step` / `ads7949srter-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ads7949srter.step` / `ads7949srter.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/ads7949) (41 pp, sha256 `ec9cbb036b993ad2`, retrieved 2026-10-08, 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 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/ads7949srter-datasheet.pdf)
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Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "data acquisition",+ "ads7949srter",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "ads7949srter.kicad_sym",+ "ads7949srter.kicad_mod",+ "ads7949srter.glb",+ "ads7949srter.step",+ "ads7949srter.lbr",+ "docs/hero.png",+ "docs/ads7949srter-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "ads7949srter-hero.glb",+ "ads7949srter-hero.overlay.json"+ ],+ "component": {+ "mpn": "ADS7949SRTER",+ "manufacturer": "Texas Instruments",+ "package": "WQFN-16-EP(3x3)",+ "pin_count": 17,+ "category": "Data Acquisition",+ "subcategory": "Analog To Digital Converters (ADC)",+ "datasheet": "https://www.ti.com/cn/lit/gpn/ads7949",+ "parts": {+ "symbol": "ads7949srter.kicad_sym",+ "footprint": "ads7949srter.kicad_mod",+ "model_3d": "ads7949srter-hero.glb",+ "model_3d_plain": "ads7949srter.glb",+ "model_3d_step": "ads7949srter-etched.step",+ "model_3d_step_plain": "ads7949srter.step",+ "lbr": "ads7949srter.lbr"+ },+ "distributor_links": {+ "lcsc": "C2669863",+ "digikey": "296-27833-2-ND",+ "mouser": "595-ADS7949SRTER"+ },+ "distributor_check": {+ "checked_at": "2026-10-08T15:57:47Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-27833-2-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-ADS7949SRTER",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "GND",+ "type": "power_in",+ "description": "Analog/digital power supply ground; all analog and digital signals are referred with respect to this pin."+ },+ {+ "number": "2",+ "name": "AVDD",+ "type": "power_in",+ "description": "Analog ADC power supply; recommended range is 2.7 V to 5.5 V with 3.3 V nominal."+ },+ {+ "number": "3",+ "name": "REF",+ "type": "input",+ "description": "Analog ADC positive reference input; decouple this pin with REFGND."+ },+ {+ "number": "4",+ "name": "REFGND",+ "type": "power_in",+ "description": "Analog reference return; short to the analog ground plane."+ },+ {+ "number": "5",+ "name": "AIN0P",+ "type": "input",+ "description": "Positive analog input for channel 0."+ },+ {+ "number": "6",+ "name": "AIN0N",+ "type": "input",+ "description": "Negative analog input for channel 0; the allowable signal swing on this pin is ±0.2 V and this pin can be grounded."+ },+ {+ "number": "7",+ "name": "AIN1N",+ "type": "input",+ "description": "Negative analog input for channel 1; the allowable signal swing on this pin is ±0.2 V and this pin can be grounded."+ },+ {+ "number": "8",+ "name": "AIN1P",+ "type": "input",+ "description": "Positive analog input for channel 1."+ },+ {+ "number": "9",+ "name": "NC",+ "type": "unconnected",+ "description": "Not connected internally; TI recommends externally shorting this pin to GND."+ },+ {+ "number": "10",+ "name": "NC",+ "type": "unconnected",+ "description": "Not connected internally; TI recommends externally shorting this pin to GND."+ },+ {+ "number": "11",+ "name": "CH SEL",+ "type": "input",+ "description": "Selects the analog input channel (low = channel 0, high = channel 1); TI recommends changing the channel within a one-clock window starting half a clock after the CS falling edge so the multiplexer output settles before sample start."+ },+ {+ "number": "12",+ "name": "PDEN",+ "type": "input",+ "description": "Enables the power-down feature if this pin is high at the CS rising edge."+ },+ {+ "number": "13",+ "name": "CS",+ "type": "input",+ "description": "Active-low chip-select signal."+ },+ {+ "number": "14",+ "name": "SCLK",+ "type": "input",+ "description": "Serial SPI clock input."+ },+ {+ "number": "15",+ "name": "SDO",+ "type": "output",+ "description": "Serial data output."+ },+ {+ "number": "16",+ "name": "DVDD",+ "type": "power_in",+ "description": "Digital I/O supply; range is 1.65 V to AVDD per the recommended operating conditions."+ },+ {+ "number": "17",+ "name": "EP",+ "type": "passive",+ "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-5-5",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: Package hint says WQFN-16-EP(3x3), but the datasheet lists the package as RTE 16-pin WQFN (3.00 mm x; The pin-diagram text in the excerpt is garbled, so the pin positions were taken from the Pin Functio",+ "exposed pad 17 added from the footprint"+ ],+ "pages_sent": 8,+ "cost_usd": 0.0641,+ "at": "2026-10-08T15:57:31"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/ads7949",+ "pages": 41,+ "sha256": "ec9cbb036b993ad2",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 17,+ "described": 17,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "ads7949srter.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 3,+ 3,+ 0.785+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "3eb81ffac423a66cdcfead8efe56401da171edaf1f2257049aad7b2d3900f6c8",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "ads7949srter-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 3,+ 3,+ 0.785+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "c71e1800bff3142f166ba2ffb1b49a6c2618336af49a42facf0118630ee17628",+ "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]"+ }+}