TPA6140A2 is a Class-G DirectPath™ stereo headphone amplifier with built-in I2C volume control
The TPA6140A2 is a Class‑G DirectPath™ stereo headphone amplifier that includes an I²C‑controlled volume stage. It operates from a 2.5 V to 5.5 V supply, delivers up to 500 mW per channel into 32 Ω, and offers a gain range of 59 dB to +4 dB. The device is targeted at portable audio applications such as cellular phones, MP3 players, and portable CD/DVD players.
Key electrical features include a quiescent current of only 0.6 mA per channel, short‑circuit and thermal‑overload protection, and +8 kV HBM ESD protection. The amplifier is supplied in a 0.4 mm‑pitch 1.6 mm × 1.6 mm WCSP package and uses a 1.8 V I²C interface (SDA/SCL). Detailed pin functions, absolute‑maximum ratings, and typical performance curves are provided in the datasheet.
| Supply voltage range | 2.5 V to 5.5 V |
|---|---|
| Quiescent current | 0.6 mA per channel |
| Gain range | 59 dB to +4 dB |
| ESD protection | +8 kV HBM |
| Package | 0.4 mm pitch, 1.6 mm × 1.6 mm WCSP |
| I²C interface voltage | 1.8 V logic |
It operates from 2.5 V up to 5.5 V.
The device draws about 0.6 mA per channel in quiescent mode.
It includes short‑circuit, thermal‑overload, and +8 kV HBM ESD protection.
The amplifier is offered in a 0.4 mm‑pitch 1.6 mm × 1.6 mm WCSP package.