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 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 a 2‑W mono bridge‑tied‑load (BTL) audio power amplifier designed for small portable devices such as notebook computers, PDAs and digital audio players. It can be reconfigured on the fly to drive two stereo single‑ended signals into headphones, making it suitable for both speaker and headphone applications.
The device operates from a 2.5 V to 5.5 V supply, offers low typical supply current (3.6 mA at 2.5 V) and a TTL‑compatible shutdown pin. It provides up to 2 W output power into a 4 Ω speaker at 5 V, with THD of 1 % (BTL mode) and an input impedance of 50 kΩ. The amplifier is supplied in a thermally‑enhanced 10‑pin MSOP (DGQ) package and is rated for –40 °C to 85 °C operation.
| Supply voltage range | 2.5 V – 5.5 V |
|---|---|
| Output power (BTL mode, 5 V) | 2 W into 4 Ω |
| Typical supply current (2.5 V) | 3.6 mA |
| Shutdown current | 1 A typical |
| Total harmonic distortion (BTL mode) | 1 % (at 5 V) |
| Input impedance | 50 kΩ |
| Operating temperature range | -40 °C to 85 °C |
| Gain (SE mode) | -1.25 V/V |
It operates from 2.5 V up to 5.5 V supply voltage.
The shutdown control can handle about 1 A typical.
Total harmonic distortion is about 1 % in BTL mode.
The input impedance is 50 kΩ.