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TPA3111D1PWPR

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by Ray

Texas Instruments Audio Power OpAmps, HTSSOP-28. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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TPA3111D1PWPR

Texas Instruments · Audio Power OpAmps · HTSSOP-28

TPA3111D1PWPR from Texas Instruments, in a HTSSOP-28. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 SD input Active-low shutdown logic input for the audio amplifier (LOW = outputs Hi-Z, HIGH = outputs enabled). TTL logic levels with compliance to AVCC.
2 FAULT output Open-drain output used to display short-circuit or DC Detect fault status. Voltage compliant to AVCC. Short-circuit faults can be set to auto-recovery by connecting FAULT to SD; otherwise faults must be reset by cycling PVCC.
3 GND power_in Connect to local ground.
4 GND power_in Connect to local ground.
5 GAIN0 input Gain select least significant bit. TTL logic levels with compliance to AVCC. Combined with GAIN1 selects one of four fixed gain settings (20/26/32/36 dB).
6 GAIN1 input Gain select most significant bit. TTL logic levels with compliance to AVCC. Combined with GAIN0 selects one of four fixed gain settings (20/26/32/36 dB).
7 AVCC power_in Analog supply. A 100-kΩ resistor in series with AVCC is needed if the PVCC slew rate is greater than 10 V/ms. Operating range 8-26 V.
8 AGND power_in Analog supply ground. Connect to the thermal pad.
9 GVDD power_out High-side FET gate drive supply. Nominal voltage is 7 V (6.5-7.3 V). Can also be used as supply for the PLIMIT divider. Add a 1-µF capacitor to ground at this pin.
10 PLIMIT input Power limit level adjust. Connect directly to GVDD for no power limiting. Add a 1-µF capacitor to ground at this pin.
11 INN input Negative audio input. Biased at 3 V.
12 INP input Positive audio input. Biased at 3 V.
13 NC unconnected Not connected.
14 AVCC power_in Analog supply. Connect AVCC supply to this pin. A 100-kΩ pull-up to AVCC was added in revision D (2010) per errata.
15 PVCC power_in Power supply for H-bridge (8-26 V). PVCC pins are also connected internally.
16 PVCC power_in Power supply for H-bridge (8-26 V). PVCC pins are also connected internally.
17 BSP bidirectional Bootstrap I/O for positive high-side FET. Requires an external bootstrap capacitor to OUTP.
18 OUTP output Class-D H-bridge positive output. Drives one side of the speaker load through a ferrite bead filter.
19 PGND power_in Power ground for the H-bridges.
20 OUTP output Class-D H-bridge positive output. Drives one side of the speaker load through a ferrite bead filter.
21 BSP bidirectional Bootstrap I/O for positive high-side FET. Requires an external bootstrap capacitor to OUTP.
22 BSN bidirectional Bootstrap I/O for negative high-side FET. Requires an external bootstrap capacitor to OUTN.
23 OUTN output Class-D H-bridge negative output. Drives the other side of the speaker load through a ferrite bead filter.
24 PGND power_in Power ground for the H-bridges.
25 OUTN output Class-D H-bridge negative output. Drives the other side of the speaker load through a ferrite bead filter.
26 BSN bidirectional Bootstrap I/O for negative high-side FET. Requires an external bootstrap capacitor to OUTN.
27 PVCC power_in Power supply for H-bridge (8-26 V). PVCC pins are also connected internally.
28 PVCC power_in Power supply for H-bridge (8-26 V). PVCC pins are also connected internally.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package HTSSOP-28
Category Op-amp/Cmp
Pins 28

Ordering variants

Same part, different packaging or reel option.

  • TPA3111D1PWPR

CAD (KiCad official)

  • Symbol: TPA3111D1PWPR
  • Footprint: Package_SO:HTSSOP-28-1EP_4.4x9.7mm_P0.65mm_EP3.4x9.5mm
  • 3D model: HTSSOP-28 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
tpa3111d1pwpr.step 367 KB You want the bare part, or you mark your own boards.
tpa3111d1pwpr-etched.step 3.1 MB You want the part with TPA3111D1PWPR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 824 faces against 455 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (31 pp, sha256 08c6a87d973fe0d4, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF