
Multiroom amp
rocketreading44/multiroom-amp
Four-zone stereo amplifier: 4 × TI TPA3221 at 28 V (about 30–40 W per channel into 8 Ω), fed by a Raspberry Pi 5 + HiFiBerry DAC8x, with a Raspberry Pi Pico as the controller.
Texas InstrumentsExtended
0.02% 1-Channel、2-Channel 105W×2@4Ω、112W×2@3Ω、208W×1@2Ω、88W×2@4Ω、100W×2@3Ω、170W×1@2Ω 108dB 2 Pairs Differential Inputs 25mA 60dB 7V~30V 90% Class D Enable/shutdown function、Overvoltage protection HTSSOP-44-6.1mm Audio Amplifiers ROHS
The TPA3221DDVR is an audio Amplifier made by Texas Instruments in a HTSSOP-44-6.1mm package with 44 pins. 0.02% 1-Channel、2-Channel 105W×2@4Ω、112W×2@3Ω、208W×1@2Ω、88W×2@4Ω、100W×2@3Ω、170W×1@2Ω 108dB 2 Pairs Differential Inputs 25mA 60dB 7V~30V 90% Class D Enable/shutdown function、Overvoltage protection HTSSOP-44-6.1mm Audio Amplifiers ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:TPA3221DDV, from EasyEDA) and its footprint (EasyEDA_Cloud:HTSSOP-44_L14.0-W6.1-P0.64-LS8.1-BL, from EasyEDA), ready for a KiCad board. 970 are in stock at JLCPCB (part C475500). 2 open-source boards in 2 repositories on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | VDD | Unspecified |
| 2 | GAIN/SLV | Unspecified |
| 3 | OTW_CLIP# | Unspecified |
| 4 | FAULT# | Unspecified |
| 5 | GND | Unspecified |
| 6 | GND | Unspecified |
| 7 | GND | Unspecified |
| 8 | IN1_P | Unspecified |
| 9 | IN1_M | Unspecified |
| 10 | RESET# | Unspecified |
| 11 | HEAD | Unspecified |
| 12 | OSCM | Unspecified |
| 13 | OSCP | Unspecified |
| 14 | FREQ_ADJ | Unspecified |
| 15 | IN2_P | Unspecified |
| 16 | IN2_M | Unspecified |
| 17 | CMUTE# | Unspecified |
| 18 | GND | Unspecified |
| 19 | GND | Unspecified |
| 20 | GND | Unspecified |
| 21 | AVDD | Unspecified |
| 22 | GVDD | Unspecified |
| 23 | BST2_M | Unspecified |
| 24 | BST2_P | Unspecified |
| 25 | GND | Unspecified |
| 26 | GND | Unspecified |
| 27 | OUT2_M | Unspecified |
| 28 | OUT2_M | Unspecified |
| 29 | PVDD | Unspecified |
| 30 | PVDD | Unspecified |
| 31 | PVDD | Unspecified |
| 32 | OUT2_P | Unspecified |
| 33 | GND | Unspecified |
| 34 | GND | Unspecified |
| 35 | OUT1_M | Unspecified |
| 36 | PVDD | Unspecified |
| 37 | PVDD | Unspecified |
| 38 | PVDD | Unspecified |
| 39 | OUT1_P | Unspecified |
| 40 | OUT1_P | Unspecified |
| 41 | GND | Unspecified |
| 42 | GND | Unspecified |
| 43 | BST1_M | Unspecified |
| 44 | BST1_P | Unspecified |

rocketreading44/multiroom-amp
Four-zone stereo amplifier: 4 × TI TPA3221 at 28 V (about 30–40 W per channel into 8 Ω), fed by a Raspberry Pi 5 + HiFiBerry DAC8x, with a Raspberry Pi Pico as the controller.

Yes. The symbol is EasyEDA_Cloud:TPA3221DDV and the footprint EasyEDA_Cloud:HTSSOP-44_L14.0-W6.1-P0.64-LS8.1-BL, both drawn on this page. PCBKit places them on a board for you when you design with it.
HTSSOP-44-6.1mm, with 44 pins. Its footprint is drawn on this page.
Texas Instruments publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C475500, with 970 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the TPA3255DDVR by Texas Instruments, the TPA3245DDVR by Texas Instruments, the TAS5342ADDVR by Texas Instruments and the TPA3221DDV by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
2 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.