Inside

• TI raises the bar on 3-D graphics performance with the TVP4010
• 16-bit Sigma Delta Analog Interface Circuit
• Power Distribution Devices Meet USB Specification
• Single-chip cellphone baseband power supply
• 300 mW stereo audio power amplifier offers 0.06% THD+N
• Single, high-speed MOSFET drivers in SOT=23 packages
• Wide input voltage, hign output drive CMOS op amps
• Single channel self-calibrating op amp
• Adjustable inverting DC-DC converter

300 mW stereo audio power amplifier offers 0.06% THD+N

Product Features

• High output power
• 300 mW into 8 @ 5 V
• 60 mW into 32 @ 5 V
• Ultra-low Distortion
<0.06% THD+N for 250 mW, 8 , 5 V
<0.06% THD+N for 60 mW, 32 , 5 V
• Low supply current...5 mA (Max)
• Shutdown Mode <1 µA
• Short Circuit and Thermal Protection
• Specified at 3.3 V and 5 V
• Characterized for operation from -20°C to 85°C

The TPA302 is a stereo audio power amplifier specifically designed to drive 32 headphones and small 8 unpowered speakers. The TPA302 is capable of delivering 250 mW of continuous average power into an 8 load at 0.06% THD+N or up to 300 mW at 1% THD+N. For headphone applications, the TPA302 delivers 60 mW of continuous average power with less than 0.06% THD+N.

The TPA302 requires only 5 mA (Max) of supply current. It offers shutdown control for extending battery life. In shutdown mode the supply current is less than 1 µA and along with 5 V and 3.3 V operation, make the device ideal for battery powered low voltage applications. The TPA302 also provides internal short circuit and thermal protection.

In notebook computer applications, the designer now has a complete stereo audio solution available from Texas Instruments. The TPA302, along with the TPA4860 and TPA4861, offers stereo speaker and headphone drive. This gives the designer high quality sound from a PC power supply, as shown above. The TPA302 is available in 8-pin SOIC.

• TPA302D