Aiyima A07 class D stereo amplifier

AIYIMA A07 small class D stereo amplifier with single ended RCA inputs. It uses the TPA3255 chip from TI.

AIYIMA A07 TPA3255

Aiyima A07 back

Aiyima A07 Measurements with our APX555

Description Aiyima A07 (from the manufacturer)

The TPA3255 is a high-performance Class D power amplifier with Class D efficiency and true to high-end sound quality. The device features an advanced integrated feedback design and proprietary high-speed gate driver error correction (Purepath Ultra HD). The dual 300W shocking bass output is compatible with passive stereo speakers of most sizes and impedance specifications. Texas Instruments TPA3255, digital audio amplifier BTL bridge power output 300W * 2 channel design, THD less than 0.03% when working continuously

Amplifier chip: TPA3255
Output power: 300W+300W
Number of channels: 2.0 channels/Stereo
Recommended power supply：DC48V 7.5A Power Supply
Impedance: 4-8 Ohm
Size:15110033MM
SNR:110db
THD+N:0.008%
GAIN:21.5db
RESPONSE:20Hz-20KHz

TPA3255 highly-integrated power amplifier class D

The TPA3255 from TI is highly-integrated power amplifier class D.

TPA3255 block details

Stereo Module for DIY without heatsink

TPA3255 module

On the left side input buffer. Right hand side output filter.

Specification

Total Output Power at 1%THD+N

260-W Stereo into 4 Ω in BTL Configuration
150-W Stereo into 8 Ω in BTL Configuration
480-W Mono into 2 Ω in PBTL Configuration

Bandwiths, Noise, THD+N

Signal Bandwidth up to 100 kHz
0.006% THD+N at 1 W into 4 Ω and <0.01% THD+N to Clipping
65 dB PSRR (BTL, 1 kHz, No Input Signal)
85 µV (A-Weighted) Output Noise
111 dB (A Weighted) SNR

Power supply and Protection

Wide 18-V to 53.5V Supply Voltage Operation
90% Efficient Class-D Operation (4 Ω)
Click and Pop Free Startup and Stop
Self-Protection Design (Including Undervoltage, Overtemperature, Clipping, and Short Circuit Protection) With Error Reporting