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DSD1791DBR
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Texas Instruments ADCs/DACs - Special Purpose, SSOP-28. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+64@@ -0,0 +1,64 @@+# DSD1791DBR++**Texas Instruments** · ADCs/DACs - Special Purpose · SSOP-28++DSD1791DBR from Texas Instruments, in a SSOP-28. 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 | PLRCK | input | Left/right clock (fS) input for PCM mode; Schmitt-trigger input, 5-V tolerant. |+| 2 | PBCK | input | Bit clock input for PCM mode; Schmitt-trigger input, 5-V tolerant. |+| 3 | PDATA | input | Serial audio data input for PCM mode; Schmitt-trigger input, 5-V tolerant. |+| 4 | DBCK | input | Bit clock input for DSD mode; Schmitt-trigger input, 5-V tolerant. |+| 5 | SCK | input | System clock input (128, 192, 256, 384, 512, or 768 fS); Schmitt-trigger input, 5-V tolerant. |+| 6 | RST | input | Reset input; Schmitt-trigger input, 5-V tolerant. |+| 7 | VDD | power_in | Digital power supply, 3.3 V nominal (3.0 V to 3.6 V). |+| 8 | DGND | power_in | Digital ground. |+| 9 | AGNDF | power_in | Analog ground for DACFF. |+| 10 | VCCR | power_in | Analog power supply for R-channel I/V, 5 V nominal (4.5 V to 5.5 V). |+| 11 | AGNDR | power_in | Analog ground for R-channel I/V. |+| 12 | VOUTR- | output | R-channel analog voltage output (negative); differential full scale is 3.2 Vp-p across VOUTR+ and VOUTR-. |+| 13 | VOUTR+ | output | R-channel analog voltage output (positive); differential full scale is 3.2 Vp-p across VOUTR+ and VOUTR-. |+| 14 | VCOM | passive | Internal bias decoupling pin. |+| 15 | VCCC | power_in | Analog power supply for internal bias and current DAC, 5 V nominal (4.5 V to 5.5 V). |+| 16 | AGNDC | power_in | Analog ground for internal bias and current DAC. |+| 17 | VOUTL+ | output | L-channel analog voltage output (positive); differential full scale is 3.2 Vp-p across VOUTL+ and VOUTL-. |+| 18 | VOUTL- | output | L-channel analog voltage output (negative); differential full scale is 3.2 Vp-p across VOUTL+ and VOUTL-. |+| 19 | AGNDL | power_in | Analog ground for L-channel I/V. |+| 20 | VCCL | power_in | Analog power supply for L-channel I/V, 5 V nominal (4.5 V to 5.5 V). |+| 21 | VCCF | power_in | Analog power supply for DACFF, 5 V nominal (4.5 V to 5.5 V). |+| 22 | ZEROR | output | Zero flag output for R-channel. |+| 23 | ZEROL | output | Zero flag output for L-channel. |+| 24 | DSDR | input | R-channel audio data input for DSD mode; Schmitt-trigger input, 5-V tolerant. |+| 25 | DSDL | input | L-channel audio data input for DSD mode; Schmitt-trigger input, 5-V tolerant. |+| 26 | MDI | bidirectional | Mode control data input/output for the SPI control port; Schmitt-trigger input with CMOS output, 5-V tolerant input. |+| 27 | MC | input | Mode control clock input; Schmitt-trigger input, 5-V tolerant. |+| 28 | MS | bidirectional | Mode control chip select input/output; Schmitt-trigger input with CMOS output, 5-V tolerant input. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SSOP-28 |+| Category | Data Acquisition |+| Pins | 28 |++## CAD (KiCad official)++- Symbol: `DSD1791DBR`+- Footprint: `Package_SO:SSOP-28_5.3x10.2mm_P0.65mm`+- 3D model: SSOP-28 (KiCad packages3D, STEP)+- 3D model files: `dsd1791dbr-etched.step` / `dsd1791dbr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dsd1791dbr.step` / `dsd1791dbr.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/dsd1791) (57 pp, sha256 `8d7f67fecf6bfb0c`, retrieved 2026-10-08, 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/dsd1791dbr-datasheet.pdf)
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Schmitt-trigger input, 5-V tolerant."+ },+ {+ "number": "2",+ "name": "PBCK",+ "type": "input",+ "description": "Bit clock input for PCM mode; Schmitt-trigger input, 5-V tolerant."+ },+ {+ "number": "3",+ "name": "PDATA",+ "type": "input",+ "description": "Serial audio data input for PCM mode; Schmitt-trigger input, 5-V tolerant."+ },+ {+ "number": "4",+ "name": "DBCK",+ "type": "input",+ "description": "Bit clock input for DSD mode; Schmitt-trigger input, 5-V tolerant."+ },+ {+ "number": "5",+ "name": "SCK",+ "type": "input",+ "description": "System clock input (128, 192, 256, 384, 512, or 768 fS); Schmitt-trigger input, 5-V tolerant."+ },+ {+ "number": "6",+ "name": "RST",+ "type": "input",+ "description": "Reset input; Schmitt-trigger input, 5-V tolerant."+ },+ {+ "number": "7",+ "name": "VDD",+ "type": "power_in",+ "description": "Digital power supply, 3.3 V nominal (3.0 V to 3.6 V)."+ },+ {+ "number": "8",+ "name": "DGND",+ "type": "power_in",+ "description": "Digital ground."+ },+ {+ "number": "9",+ "name": "AGNDF",+ "type": "power_in",+ "description": "Analog ground for DACFF."+ },+ {+ "number": "10",+ "name": "VCCR",+ "type": "power_in",+ "description": "Analog power supply for R-channel I/V, 5 V nominal (4.5 V to 5.5 V)."+ },+ {+ "number": "11",+ "name": "AGNDR",+ "type": "power_in",+ "description": "Analog ground for R-channel I/V."+ },+ {+ "number": "12",+ "name": "VOUTR–",+ "type": "output",+ "description": "R-channel analog voltage output (negative); differential full scale is 3.2 Vp-p across VOUTR+ and VOUTR-."+ },+ {+ "number": "13",+ "name": "VOUTR+",+ "type": "output",+ "description": "R-channel analog voltage output (positive); differential full scale is 3.2 Vp-p across VOUTR+ and VOUTR-."+ },+ {+ "number": "14",+ "name": "VCOM",+ "type": "passive",+ "description": "Internal bias decoupling pin."+ },+ {+ "number": "15",+ "name": "VCCC",+ "type": "power_in",+ "description": "Analog power supply for internal bias and current DAC, 5 V nominal (4.5 V to 5.5 V)."+ },+ {+ "number": "16",+ "name": "AGNDC",+ "type": "power_in",+ "description": "Analog ground for internal bias and current DAC."+ },+ {+ "number": "17",+ "name": "VOUTL+",+ "type": "output",+ "description": "L-channel analog voltage output (positive); differential full scale is 3.2 Vp-p across VOUTL+ and VOUTL-."+ },+ {+ "number": "18",+ "name": "VOUTL–",+ "type": "output",+ "description": "L-channel analog voltage output (negative); differential full scale is 3.2 Vp-p across VOUTL+ and VOUTL-."+ },+ {+ "number": "19",+ "name": "AGNDL",+ "type": "power_in",+ "description": "Analog ground for L-channel I/V."+ },+ {+ "number": "20",+ "name": "VCCL",+ "type": "power_in",+ "description": "Analog power supply for L-channel I/V, 5 V nominal (4.5 V to 5.5 V)."+ },+ {+ "number": "21",+ "name": "VCCF",+ "type": "power_in",+ "description": "Analog power supply for DACFF, 5 V nominal (4.5 V to 5.5 V)."+ },+ {+ "number": "22",+ "name": "ZEROR",+ "type": "output",+ "description": "Zero flag output for R-channel."+ },+ {+ "number": "23",+ "name": "ZEROL",+ "type": "output",+ "description": "Zero flag output for L-channel."+ },+ {+ "number": "24",+ "name": "DSDR",+ "type": "input",+ "description": "R-channel audio data input for DSD mode; Schmitt-trigger input, 5-V tolerant."+ },+ {+ "number": "25",+ "name": "DSDL",+ "type": "input",+ "description": "L-channel audio data input for DSD mode; Schmitt-trigger input, 5-V tolerant."+ },+ {+ "number": "26",+ "name": "MDI",+ "type": "bidirectional",+ "description": "Mode control data input/output for the SPI control port; Schmitt-trigger input with CMOS output, 5-V tolerant input."+ },+ {+ "number": "27",+ "name": "MC",+ "type": "input",+ "description": "Mode control clock input; Schmitt-trigger input, 5-V tolerant."+ },+ {+ "number": "28",+ "name": "MS",+ "type": "bidirectional",+ "description": "Mode control chip select input/output; Schmitt-trigger input with CMOS output, 5-V tolerant input."+ }+ ],+ "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 datasheet gives no electrical type for VCOM (only 'Internal bias decoupling pin'); 'passive' is ; Supply and ground pins are typed power_in per the KiCad convention stated in the task; the datasheet; In the external digital filter mode (DFMS=1) the datasheet reassigns DSDL/DSDR (pins 25/26 per page "+ ],+ "pages_sent": 16,+ "cost_usd": 0.0891,+ "at": "2026-10-08T15:56:31"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/dsd1791",+ "pages": 57,+ "sha256": "8d7f67fecf6bfb0c",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 28,+ "described": 28,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "dsd1791dbr.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 7.8,+ 10.2,+ 2.1+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "7aa76979ae41da44bded1ed74115012868f2f3f5a757faf32bb9df4f92c1e313",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "dsd1791dbr-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 7.8,+ 10.2,+ 2.1+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "22dbaac233b06010793b6360f0c3c8235e13affb8234dd7997ebe13d599ae046",+ "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]"+ }+}