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ADS7864YB
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Texas Instruments Analog To Digital Converters (ADC), TQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+84@@ -0,0 +1,84 @@+# ADS7864YB++**Texas Instruments** · Analog To Digital Converters (ADC) · TQFP-48(7x7)++ADS7864YB from Texas Instruments, in a TQFP-48(7x7). 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 | +VA | power_in | Analog power supply, normally +5V (supply range 4.75 V to 5.25 V). |+| 2 | AGND | power_in | Analog ground; should be connected to a clean analog ground point. |+| 3 | DB15 | output | Data valid output: '1' indicates valid data and '0' indicates invalid data. |+| 4 | DB14 | output | Channel address output pin (see Table 2). |+| 5 | DB13 | output | Channel address output pin (see Table 2). |+| 6 | DB12 | output | Channel address output pin (see Table 2). |+| 7 | DB11 | output | Data bit 11, the MSB of the conversion result. |+| 8 | DB10 | output | Data bit 10 of the conversion result. |+| 9 | DB9 | output | Data bit 9 of the conversion result. |+| 10 | DB8 | output | Data bit 8 of the conversion result. |+| 11 | DB7 | output | Data bit 7 of the conversion result. |+| 12 | DB6 | output | Data bit 6 of the conversion result. |+| 13 | DB5 | output | Data bit 5 of the conversion result. |+| 14 | DB4 | output | Data bit 4 of the conversion result. |+| 15 | DB3 | output | Data bit 3 of the conversion result. |+| 16 | DB2 | output | Data bit 2 of the conversion result. |+| 17 | DB1 | output | Data bit 1 of the conversion result. |+| 18 | DB0 | output | Data bit 0, the LSB of the conversion result. |+| 19 | BUSY | output | Goes low when a conversion is in progress. |+| 20 | DGND | power_in | Digital ground. |+| 21 | +VD | power_in | Digital power supply, +5 VDC (supply range 4.75 V to 5.25 V). |+| 22 | CLOCK | input | An external clock must be applied to this input; the external clock range is 0.2 MHz to 8 MHz. |+| 23 | RD | input | Enables the parallel output when used in conjunction with chip select. |+| 24 | CS | input | Chip select input. |+| 25 | HOLDC | input | Places channels C0 and C1 in hold mode. |+| 26 | HOLDB | input | Places channels B0 and B1 in hold mode. |+| 27 | HOLDA | input | Places channels A0 and A1 in hold mode. |+| 28 | BYTE | input | 2 × 8 output capability; active high. |+| 29 | A2 | input | Address/mode select pin (see Table 3). |+| 30 | A1 | input | Address/mode select pin (see Table 3). |+| 31 | A0 | input | Address/mode select pin (see Table 3). |+| 32 | RESET | input | Reset pin. |+| 33 | REFOUT | output | Internal reference output; when using the internal reference, a bypass capacitor must not be used and this pin is tied directly to pin 34. |+| 34 | REFIN | input | Reference input; external reference voltage range is 1.2 V to 2.6 V (2.5 V nominal internal reference). |+| 35 | AGND | power_in | Analog ground; should be connected to a clean analog ground point. |+| 36 | +VA | power_in | Analog power supply, normally +5V (supply range 4.75 V to 5.25 V). |+| 37 | CH A1+ | input | Noninverting input, channel A1; analog inputs are limited to -0.3 V to (+VA + 0.3) V. |+| 38 | CH A1- | input | Inverting input, channel A1; analog inputs are limited to -0.3 V to (+VA + 0.3) V. |+| 39 | CH B1+ | input | Noninverting input, channel B1; analog inputs are limited to -0.3 V to (+VA + 0.3) V. |+| 40 | CH B1- | input | Inverting input, channel B1; analog inputs are limited to -0.3 V to (+VA + 0.3) V. |+| 41 | CH C1+ | input | Noninverting input, channel C1; analog inputs are limited to -0.3 V to (+VA + 0.3) V. |+| 42 | CH C1- | input | Inverting input, channel C1; analog inputs are limited to -0.3 V to (+VA + 0.3) V. |+| 43 | CH C0- | input | Inverting input, channel C0; analog inputs are limited to -0.3 V to (+VA + 0.3) V. |+| 44 | CH C0+ | input | Noninverting input, channel C0; analog inputs are limited to -0.3 V to (+VA + 0.3) V. |+| 45 | CH B0- | input | Inverting input, channel B0; analog inputs are limited to -0.3 V to (+VA + 0.3) V. |+| 46 | CH B0+ | input | Noninverting input, channel B0; analog inputs are limited to -0.3 V to (+VA + 0.3) V. |+| 47 | CH A0- | input | Inverting input, channel A0; analog inputs are limited to -0.3 V to (+VA + 0.3) V. |+| 48 | CH A0+ | input | Noninverting input, channel A0; analog inputs are limited to -0.3 V to (+VA + 0.3) V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TQFP-48(7x7) |+| Category | Data Acquisition |+| Pins | 48 |++## CAD (KiCad official)++- Symbol: `ADS7864YB`+- Footprint: `Package_QFP:TQFP-48_7x7mm_P0.5mm`+- 3D model: TQFP-48(7x7) (KiCad packages3D, STEP)+- 3D model files: `ads7864yb-etched.step` / `ads7864yb-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ads7864yb.step` / `ads7864yb.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/ads7864) (28 pp, sha256 `b0cb9242130340c6`, 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/ads7864yb-datasheet.pdf)
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should be connected to a clean analog ground point."+ },+ {+ "number": "3",+ "name": "DB15",+ "type": "output",+ "description": "Data valid output: '1' indicates valid data and '0' indicates invalid data."+ },+ {+ "number": "4",+ "name": "DB14",+ "type": "output",+ "description": "Channel address output pin (see Table 2)."+ },+ {+ "number": "5",+ "name": "DB13",+ "type": "output",+ "description": "Channel address output pin (see Table 2)."+ },+ {+ "number": "6",+ "name": "DB12",+ "type": "output",+ "description": "Channel address output pin (see Table 2)."+ },+ {+ "number": "7",+ "name": "DB11",+ "type": "output",+ "description": "Data bit 11, the MSB of the conversion result."+ },+ {+ "number": "8",+ "name": "DB10",+ "type": "output",+ "description": "Data bit 10 of the conversion result."+ },+ {+ "number": "9",+ "name": "DB9",+ "type": "output",+ "description": "Data bit 9 of the conversion result."+ },+ {+ "number": "10",+ "name": "DB8",+ "type": "output",+ "description": "Data bit 8 of the conversion result."+ },+ {+ "number": "11",+ "name": "DB7",+ "type": "output",+ "description": "Data bit 7 of the conversion result."+ },+ {+ "number": "12",+ "name": "DB6",+ "type": "output",+ "description": "Data bit 6 of the conversion result."+ },+ {+ "number": "13",+ "name": "DB5",+ "type": "output",+ "description": "Data bit 5 of the conversion result."+ },+ {+ "number": "14",+ "name": "DB4",+ "type": "output",+ "description": "Data bit 4 of the conversion result."+ },+ {+ "number": "15",+ "name": "DB3",+ "type": "output",+ "description": "Data bit 3 of the conversion result."+ },+ {+ "number": "16",+ "name": "DB2",+ "type": "output",+ "description": "Data bit 2 of the conversion result."+ },+ {+ "number": "17",+ "name": "DB1",+ "type": "output",+ "description": "Data bit 1 of the conversion result."+ },+ {+ "number": "18",+ "name": "DB0",+ "type": "output",+ "description": "Data bit 0, the LSB of the conversion result."+ },+ {+ "number": "19",+ "name": "BUSY",+ "type": "output",+ "description": "Goes low when a conversion is in progress."+ },+ {+ "number": "20",+ "name": "DGND",+ "type": "power_in",+ "description": "Digital ground."+ },+ {+ "number": "21",+ "name": "+VD",+ "type": "power_in",+ "description": "Digital power supply, +5 VDC (supply range 4.75 V to 5.25 V)."+ },+ {+ "number": "22",+ "name": "CLOCK",+ "type": "input",+ "description": "An external clock must be applied to this input; the external clock range is 0.2 MHz to 8 MHz."+ },+ {+ "number": "23",+ "name": "RD",+ "type": "input",+ "description": "Enables the parallel output when used in conjunction with chip select."+ },+ {+ "number": "24",+ "name": "CS",+ "type": "input",+ "description": "Chip select input."+ },+ {+ "number": "25",+ "name": "HOLDC",+ "type": "input",+ "description": "Places channels C0 and C1 in hold mode."+ },+ {+ "number": "26",+ "name": "HOLDB",+ "type": "input",+ "description": "Places channels B0 and B1 in hold mode."+ },+ {+ "number": "27",+ "name": "HOLDA",+ "type": "input",+ "description": "Places channels A0 and A1 in hold mode."+ },+ {+ "number": "28",+ "name": "BYTE",+ "type": "input",+ "description": "2 × 8 output capability; active high."+ },+ {+ "number": "29",+ "name": "A2",+ "type": "input",+ "description": "Address/mode select pin (see Table 3)."+ },+ {+ "number": "30",+ "name": "A1",+ "type": "input",+ "description": "Address/mode select pin (see Table 3)."+ },+ {+ "number": "31",+ "name": "A0",+ "type": "input",+ "description": "Address/mode select pin (see Table 3)."+ },+ {+ "number": "32",+ "name": "RESET",+ "type": "input",+ "description": "Reset pin."+ },+ {+ "number": "33",+ "name": "REFOUT",+ "type": "output",+ "description": "Internal reference output; when using the internal reference, a bypass capacitor must not be used and this pin is tied directly to pin 34."+ },+ {+ "number": "34",+ "name": "REFIN",+ "type": "input",+ "description": "Reference input; external reference voltage range is 1.2 V to 2.6 V (2.5 V nominal internal reference)."+ },+ {+ "number": "35",+ "name": "AGND",+ "type": "power_in",+ "description": "Analog ground; should be connected to a clean analog ground point."+ },+ {+ "number": "36",+ "name": "+VA",+ "type": "power_in",+ "description": "Analog power supply, normally +5V (supply range 4.75 V to 5.25 V)."+ },+ {+ "number": "37",+ "name": "CH A1+",+ "type": "input",+ "description": "Noninverting input, channel A1; analog inputs are limited to -0.3 V to (+VA + 0.3) V."+ },+ {+ "number": "38",+ "name": "CH A1-",+ "type": "input",+ "description": "Inverting input, channel A1; analog inputs are limited to -0.3 V to (+VA + 0.3) V."+ },+ {+ "number": "39",+ "name": "CH B1+",+ "type": "input",+ "description": "Noninverting input, channel B1; analog inputs are limited to -0.3 V to (+VA + 0.3) V."+ },+ {+ "number": "40",+ "name": "CH B1-",+ "type": "input",+ "description": "Inverting input, channel B1; analog inputs are limited to -0.3 V to (+VA + 0.3) V."+ },+ {+ "number": "41",+ "name": "CH C1+",+ "type": "input",+ "description": "Noninverting input, channel C1; analog inputs are limited to -0.3 V to (+VA + 0.3) V."+ },+ {+ "number": "42",+ "name": "CH C1-",+ "type": "input",+ "description": "Inverting input, channel C1; analog inputs are limited to -0.3 V to (+VA + 0.3) V."+ },+ {+ "number": "43",+ "name": "CH C0-",+ "type": "input",+ "description": "Inverting input, channel C0; analog inputs are limited to -0.3 V to (+VA + 0.3) V."+ },+ {+ "number": "44",+ "name": "CH C0+",+ "type": "input",+ "description": "Noninverting input, channel C0; analog inputs are limited to -0.3 V to (+VA + 0.3) V."+ },+ {+ "number": "45",+ "name": "CH B0-",+ "type": "input",+ "description": "Inverting input, channel B0; analog inputs are limited to -0.3 V to (+VA + 0.3) V."+ },+ {+ "number": "46",+ "name": "CH B0+",+ "type": "input",+ "description": "Noninverting input, channel B0; analog inputs are limited to -0.3 V to (+VA + 0.3) V."+ },+ {+ "number": "47",+ "name": "CH A0-",+ "type": "input",+ "description": "Inverting input, channel A0; analog inputs are limited to -0.3 V to (+VA + 0.3) V."+ },+ {+ "number": "48",+ "name": "CH A0+",+ "type": "input",+ "description": "Noninverting input, channel A0; analog inputs are limited to -0.3 V to (+VA + 0.3) V."+ }+ ],+ "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 pin names and functions but not KiCad ERC electrical types. Types were assigned ; The pin 1-48 assignments in the PIN DESCRIPTIONS table (page 6) agree with the PIN CONFIGURATIONS dr; Descriptions for the analog input pins take the absolute maximum input limit from the Absolute Maxim"+ ],+ "pages_sent": 9,+ "cost_usd": 0.066,+ "at": "2026-10-08T01:16:24"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/ads7864",+ "pages": 28,+ "sha256": "b0cb9242130340c6",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 48,+ "described": 48,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "ads7864yb.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 9,+ 9,+ 1.1+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "14ca7676e4932e92f0eca0c6d56ce3018cd28a2531204a70ab7bbacb3eeb3cf5",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "ads7864yb-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 9,+ 9,+ 1.1+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "99ab26f6e6217c66278cf5e859594a9eaca8cb7b94097dab986034bae71d228f",+ "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]"+ }+}