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PCM1770RGA
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Texas Instruments ADCs/DACs - Special Purpose, VQFN-20(4.2x4.2). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+57@@ -0,0 +1,57 @@+# PCM1770RGA++**Texas Instruments** · ADCs/DACs - Special Purpose · VQFN-20(4.2x4.2)++PCM1770RGA from Texas Instruments, in a VQFN-20(4.2x4.2). 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 | DATA | input | Serial audio data input. |+| 2 | BCK | bidirectional | Serial bit clock that clocks the individual bits of DATA; it is an input from an external device in slave mode and is generated by the PCM1770 as an output in master mode. |+| 3 | PD | input | Reset input; when low, the PCM1770 is powered down and all mode control registers are reset to default settings. |+| 4 | AGND | power_in | Analog ground that is the return for VCC. |+| 5 | HGND | power_in | Analog ground that is the return for VHP. |+| 6 | VCOM | passive | Decoupling capacitor connection; an external 10-µF capacitor from this terminal to analog ground is required for noise filtering, and the voltage here is 0.5 VHP nominal. |+| 7 | HOUTR | output | R-channel analog signal output of the headphone amplifiers. |+| 8 | NC | unconnected | No connect. |+| 9 | HOUTL | output | L-channel analog signal output of the headphone amplifiers. |+| 10 | AIN | input | Monaural analog signal mixer input that can be mixed with the outputs of the L- and R-channel DACs. |+| 11 | VHP | power_in | Analog power supply for the headphone amplifier circuits; the voltage must be the same as VCC. |+| 12 | VCC | power_in | Power supply for all analog circuits except the headphone amplifier, specified at 1.6 V to 3.6 V. |+| 13 | MD | input | Mode control port serial data input that controls the operation mode of the PCM1770. |+| 14 | MC | input | Mode control port serial bit clock input that clocks the individual bits of MD. |+| 15 | MS | input | Mode control port select; the control port is active when this terminal is low. |+| 16 | SCKI | input | System clock input. |+| 17 | NC | unconnected | No connect. |+| 18 | NC | unconnected | No connect. |+| 19 | NC | unconnected | No connect. |+| 20 | LRCK | bidirectional | Left and right clock that determines the channel on DATA; its frequency must equal the audio sampling rate, and it is an input in slave mode or a device-generated output in master mode. |+| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | VQFN-20(4.2x4.2) |+| Category | Data Acquisition |+| Pins | 21 |++## CAD (KiCad official)++- Symbol: `PCM1770RGA`+- Footprint: `Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm`+- 3D model: VQFN-20(4.2x4.2) (KiCad packages3D, STEP)+- 3D model files: `pcm1770rga-etched.step` / `pcm1770rga-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pcm1770rga.step` / `pcm1770rga.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/pcm1770) (40 pp, sha256 `8389d91d0d41551d`, retrieved 2026-10-07, tier: lcsc)+- **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/pcm1770rga-datasheet.pdf)
page.jsonadded+278@@ -0,0 +1,278 @@+{+ "slug": "pcm1770rga",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments ADCs/DACs - Special Purpose, VQFN-20(4.2x4.2). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "data acquisition",+ "pcm1770rga",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "pcm1770rga.kicad_sym",+ "pcm1770rga.kicad_mod",+ "pcm1770rga.glb",+ "pcm1770rga.step",+ "pcm1770rga.lbr",+ "docs/hero.png",+ "docs/pcm1770rga-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "pcm1770rga-hero.glb",+ "pcm1770rga-hero.overlay.json"+ ],+ "component": {+ "mpn": "PCM1770RGA",+ "manufacturer": "Texas Instruments",+ "package": "VQFN-20(4.2x4.2)",+ "pin_count": 21,+ "category": "Data Acquisition",+ "subcategory": "ADCs/DACs - Special Purpose",+ "datasheet": "https://www.ti.com/cn/lit/gpn/pcm1770",+ "parts": {+ "symbol": "pcm1770rga.kicad_sym",+ "footprint": "pcm1770rga.kicad_mod",+ "model_3d": "pcm1770rga-hero.glb",+ "model_3d_plain": "pcm1770rga.glb",+ "model_3d_step": "pcm1770rga-etched.step",+ "model_3d_step_plain": "pcm1770rga.step",+ "lbr": "pcm1770rga.lbr"+ },+ "distributor_links": {+ "lcsc": "C1540084",+ "digikey": "2156-PCM1770RGA-ND",+ "mouser": "595-PCM1770RGA"+ },+ "distributor_check": {+ "checked_at": "2026-10-07T22:01:31Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "2156-PCM1770RGA-ND",+ "status": "found"+ },+ "mouser": {+ "pn": "595-PCM1770RGA",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "DATA",+ "type": "input",+ "description": "Serial audio data input."+ },+ {+ "number": "2",+ "name": "BCK",+ "type": "bidirectional",+ "description": "Serial bit clock that clocks the individual bits of DATA; it is an input from an external device in slave mode and is generated by the PCM1770 as an output in master mode."+ },+ {+ "number": "3",+ "name": "PD",+ "type": "input",+ "description": "Reset input; when low, the PCM1770 is powered down and all mode control registers are reset to default settings."+ },+ {+ "number": "4",+ "name": "AGND",+ "type": "power_in",+ "description": "Analog ground that is the return for VCC."+ },+ {+ "number": "5",+ "name": "HGND",+ "type": "power_in",+ "description": "Analog ground that is the return for VHP."+ },+ {+ "number": "6",+ "name": "VCOM",+ "type": "passive",+ "description": "Decoupling capacitor connection; an external 10-µF capacitor from this terminal to analog ground is required for noise filtering, and the voltage here is 0.5 VHP nominal."+ },+ {+ "number": "7",+ "name": "HOUTR",+ "type": "output",+ "description": "R-channel analog signal output of the headphone amplifiers."+ },+ {+ "number": "8",+ "name": "NC",+ "type": "unconnected",+ "description": "No connect."+ },+ {+ "number": "9",+ "name": "HOUTL",+ "type": "output",+ "description": "L-channel analog signal output of the headphone amplifiers."+ },+ {+ "number": "10",+ "name": "AIN",+ "type": "input",+ "description": "Monaural analog signal mixer input that can be mixed with the outputs of the L- and R-channel DACs."+ },+ {+ "number": "11",+ "name": "VHP",+ "type": "power_in",+ "description": "Analog power supply for the headphone amplifier circuits; the voltage must be the same as VCC."+ },+ {+ "number": "12",+ "name": "VCC",+ "type": "power_in",+ "description": "Power supply for all analog circuits except the headphone amplifier, specified at 1.6 V to 3.6 V."+ },+ {+ "number": "13",+ "name": "MD",+ "type": "input",+ "description": "Mode control port serial data input that controls the operation mode of the PCM1770."+ },+ {+ "number": "14",+ "name": "MC",+ "type": "input",+ "description": "Mode control port serial bit clock input that clocks the individual bits of MD."+ },+ {+ "number": "15",+ "name": "MS",+ "type": "input",+ "description": "Mode control port select; the control port is active when this terminal is low."+ },+ {+ "number": "16",+ "name": "SCKI",+ "type": "input",+ "description": "System clock input."+ },+ {+ "number": "17",+ "name": "NC",+ "type": "unconnected",+ "description": "No connect."+ },+ {+ "number": "18",+ "name": "NC",+ "type": "unconnected",+ "description": "No connect."+ },+ {+ "number": "19",+ "name": "NC",+ "type": "unconnected",+ "description": "No connect."+ },+ {+ "number": "20",+ "name": "LRCK",+ "type": "bidirectional",+ "description": "Left and right clock that determines the channel on DATA; its frequency must equal the audio sampling rate, and it is an input in slave mode or a device-generated output in master mode."+ },+ {+ "number": "21",+ "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: The 4.2x4.2 mm body size from the package hint does not appear in the supplied text. The package is ; Pin numbers are taken from the PCM1770RGA terminal table (page 7), which is the variant matching thi; The datasheet gives no ERC class for the supply pins. VCC and VHP were typed power_in and VCOM as pa",+ "exposed pad 21 added from the footprint"+ ],+ "pages_sent": 12,+ "cost_usd": 0.0666,+ "at": "2026-10-07T22:01:12"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/pcm1770",+ "pages": 40,+ "sha256": "8389d91d0d41551d",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 21,+ "described": 21,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "pcm1770rga.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 4,+ 4,+ 0.77+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "c9476a1612023de37f27b4972110ab6ac6dc0eaf5ac48957a2e1c497650082a5",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "pcm1770rga-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 4,+ 4,+ 0.77+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "bd23c69805653c34cda9125b6b38ded56d279706d39dc6e0cdaefac3753b1489",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}