The document describes TPA6203A1, a 1.25W mono fully differential audio power amplifier. It is designed for wireless or cellular handsets and PDAs, and features low power consumption, shutdown control, and improved RF rectification immunity.
The TPA6203A1 is a 1.25‑W mono fully‑differential audio power amplifier designed for wireless and cellular handsets. It operates from a 2.5 V to 5.5 V supply, delivering 1 W into an 8 Ω load while drawing only 1.7 mA quiescent current.
Key features include a shutdown current below 10 µA, high PSRR (≈90 dB), CMRR of about –60 dB, and a fast 4 µs start‑up time. The device is offered in three package types (MicroStar Junior, QFN, MSOP) and supports optional bypass capacitors for improved performance.
| Supply voltage range (recommended) | 2.5 V – 5.5 V |
|---|---|
| Output power (8 Ω load, 5 V) | 1.25 W |
| Quiescent supply current | 1.7 mA typical |
| Shutdown current | < 10 µA |
| Total harmonic distortion (THD+N) | 1 % at 1 kHz |
| Power‑supply rejection ratio (PSRR) | ≈ 90 dB |
| Common‑mode rejection ratio (CMRR) | ≤ ‑60 dB |
| Gain | 1 V/V |
| Startup time (with bypass capacitor) | 4 µs |
The recommended supply voltage is between 2.5 V and 5.5 V.
It can deliver up to 1.25 W (1 W at 5 V) into an 8 Ω load.
The typical quiescent supply current is 1.7 mA.
The shutdown current is less than 10 µA.