TPA0213 - Texas Instruments

TPA0213 2-W Mono Audio Power Amplifier

The TPA0213 is a 2-W mono bridge-tied-load (BTL) amplifier designed to drive speakers with as low as 4-Ω impedance. The amplifier can be reconfigured on the fly to drive two stereo single-ended (SE) signals into headphones. This makes the device ideal for use in small notebook computers, PDAs, personal digital audio players, anywhere a mono speaker and stere.

Features

his makes the device ideal for use in small notebook computers, PDAs, personal digital audio players, anywhere a mono speaker and stereo headphones are required. From a 5-V supply, the TPA0213 can deliver 2 W of power into a 4-Ω speaker. The gain of the input stage is set by the user-selected input resistor and a 50-kΩ internal feedback resistor (AV = − RF/RI). The power stage is internally configured with a gain of
  –1.25 V/V in SE mode, and
  –2.5 V/V in BTL mode. Thus, the overall gain of the amplifier is −62.5 kΩ/RI in SE mode and −125 kΩ/RI in BTL mode. The TPA0213 is available in the 10-pin.