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TAS5421QPWPRQ1
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Texas Instruments Audio Power OpAmps, HTSSOP-16-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+54@@ -0,0 +1,54 @@+# TAS5421QPWPRQ1++**Texas Instruments** · Audio Power OpAmps · HTSSOP-16-EP++TAS5421QPWPRQ1 from Texas Instruments, in a HTSSOP-16-EP. 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 | Device ground reference; datasheet lists pins 1, 9 and 16 as ground. |+| 2 | STANDBY | input | Active-low STANDBY input with no internal pullup or pulldown, so an unused pin must be tied to a low-voltage rail such as 3.3 V or 5 V through a high-impedance resistor. |+| 3 | BYP | passive | Voltage-regulator bypass pin requiring a 1 µF ±10% capacitor; the BYP pin voltage is stated as 6.4 V to 7.4 V. |+| 4 | SDA | bidirectional | I2C data line; with a 4.7 kΩ pullup it outputs at least 2.4 V high and at most 0.4 V low at 3 mA sink, and inputs above 2.1 V and below 1.1 V are logic high and low; connect to 3.3 V if no I2C master is used. |+| 5 | SCL | input | I2C clock input with logic-high input of 2.1 V to 5.5 V and logic-low input of at most 1.1 V, operating up to 400 kHz. |+| 6 | IN_P | input | Non-inverting analog audio input, internally biased to 3 V common mode and AC-coupled through an external series capacitor of 1 µF. |+| 7 | IN_N | input | Inverting analog audio input, internally biased to 3 V common mode and AC-coupled through an external series capacitor of 1 µF. |+| 8 | MUTE | input | Active-high mute input with no internal pullup or pulldown; if unused, connect it to GND through a high-impedance resistor. |+| 9 | GND | power_in | Device ground reference; datasheet lists pins 1, 9 and 16 as ground. |+| 10 | BSTN | passive | Bootstrap pin for the negative-output high-side FET, connected through a 220 nF ±20% capacitor to OUTN. |+| 11 | OUTN | power_out | Negative BTL amplifier output, filtered with an LC low-pass filter; peak output current is limited to 3.5 A by overcurrent shutdown. |+| 12 | OUTP | power_out | Positive BTL amplifier output, filtered with an LC low-pass filter; peak output current is limited to 3.5 A by overcurrent shutdown. |+| 13 | BSTP | passive | Bootstrap pin for the positive-output high-side FET, connected through a 220 nF ±20% capacitor to OUTP. |+| 14 | FAULT | output | Active-low open-drain fault output that reports faults; it reads at most 0.5 V low with a 47 kΩ pullup to 3.3 V and has a maximum sink current of 7 mA. |+| 15 | PVDD | power_in | Power supply input with a recommended operating range of 4.5 V to 18 V for a 4 Ω load and an absolute maximum DC rating of 30 V relative to GND. |+| 16 | GND | power_in | Device ground reference; datasheet lists pins 1, 9 and 16 as ground. |+| 17 | Thermal Pad | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | HTSSOP-16-EP |+| Category | Operational Amplifier/Comparator |+| Pins | 17 |++## CAD (KiCad official)++- Symbol: `TAS5421QPWPRQ1`+- Footprint: `Package_SO:TSSOP-16-1EP_4.4x5mm_P0.65mm`+- 3D model: HTSSOP-16-EP (KiCad packages3D, STEP)+- 3D model files: `tas5421qpwprq1-etched.step` / `tas5421qpwprq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tas5421qpwprq1.step` / `tas5421qpwprq1.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/tas5421-q1) (32 pp, sha256 `98d5a60a363b9539`, 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/tas5421qpwprq1-datasheet.pdf)
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datasheet lists pins 1, 9 and 16 as ground."+ },+ {+ "number": "2",+ "name": "STANDBY",+ "type": "input",+ "description": "Active-low STANDBY input with no internal pullup or pulldown, so an unused pin must be tied to a low-voltage rail such as 3.3 V or 5 V through a high-impedance resistor."+ },+ {+ "number": "3",+ "name": "BYP",+ "type": "passive",+ "description": "Voltage-regulator bypass pin requiring a 1 µF ±10% capacitor; the BYP pin voltage is stated as 6.4 V to 7.4 V."+ },+ {+ "number": "4",+ "name": "SDA",+ "type": "bidirectional",+ "description": "I2C data line; with a 4.7 kΩ pullup it outputs at least 2.4 V high and at most 0.4 V low at 3 mA sink, and inputs above 2.1 V and below 1.1 V are logic high and low; connect to 3.3 V if no I2C master is used."+ },+ {+ "number": "5",+ "name": "SCL",+ "type": "input",+ "description": "I2C clock input with logic-high input of 2.1 V to 5.5 V and logic-low input of at most 1.1 V, operating up to 400 kHz."+ },+ {+ "number": "6",+ "name": "IN_P",+ "type": "input",+ "description": "Non-inverting analog audio input, internally biased to 3 V common mode and AC-coupled through an external series capacitor of 1 µF."+ },+ {+ "number": "7",+ "name": "IN_N",+ "type": "input",+ "description": "Inverting analog audio input, internally biased to 3 V common mode and AC-coupled through an external series capacitor of 1 µF."+ },+ {+ "number": "8",+ "name": "MUTE",+ "type": "input",+ "description": "Active-high mute input with no internal pullup or pulldown; if unused, connect it to GND through a high-impedance resistor."+ },+ {+ "number": "9",+ "name": "GND",+ "type": "power_in",+ "description": "Device ground reference; datasheet lists pins 1, 9 and 16 as ground."+ },+ {+ "number": "10",+ "name": "BSTN",+ "type": "passive",+ "description": "Bootstrap pin for the negative-output high-side FET, connected through a 220 nF ±20% capacitor to OUTN."+ },+ {+ "number": "11",+ "name": "OUTN",+ "type": "power_out",+ "description": "Negative BTL amplifier output, filtered with an LC low-pass filter; peak output current is limited to 3.5 A by overcurrent shutdown."+ },+ {+ "number": "12",+ "name": "OUTP",+ "type": "power_out",+ "description": "Positive BTL amplifier output, filtered with an LC low-pass filter; peak output current is limited to 3.5 A by overcurrent shutdown."+ },+ {+ "number": "13",+ "name": "BSTP",+ "type": "passive",+ "description": "Bootstrap pin for the positive-output high-side FET, connected through a 220 nF ±20% capacitor to OUTP."+ },+ {+ "number": "14",+ "name": "FAULT",+ "type": "output",+ "description": "Active-low open-drain fault output that reports faults; it reads at most 0.5 V low with a 47 kΩ pullup to 3.3 V and has a maximum sink current of 7 mA."+ },+ {+ "number": "15",+ "name": "PVDD",+ "type": "power_in",+ "description": "Power supply input with a recommended operating range of 4.5 V to 18 V for a 4 Ω load and an absolute maximum DC rating of 30 V relative to GND."+ },+ {+ "number": "16",+ "name": "GND",+ "type": "power_in",+ "description": "Device ground reference; datasheet lists pins 1, 9 and 16 as ground."+ },+ {+ "number": "17",+ "name": "Thermal Pad",+ "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 exposed thermal pad is listed in the pin table as '—' with no pin number. It must be soldered to; Type classification is a judgment call: the datasheet labels BYP as 'PBY' (power bypass), and BSTN/B; Table 'Recommended Operating Conditions' values for SCL/SDA/STANDBY input levels were extracted from",+ "exposed pad 17 added from the footprint"+ ],+ "pages_sent": 13,+ "cost_usd": 0.0827,+ "at": "2026-10-08T03:57:41"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/tas5421-q1",+ "pages": 32,+ "sha256": "98d5a60a363b9539",+ "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": "tas5421qpwprq1.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6.4,+ 5,+ 1.1+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "7982746831c0bd23f4690608869ad67776faae5c762fb0376666126a3998921b",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "tas5421qpwprq1-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6.4,+ 5,+ 1.1+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "396e413070450aab93109f4e6ce9586abfa341d061060105c671b6cc8aae5c05",+ "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]"+ }+}