Description

The MAX4411EBE+ is a fixed-gain, stereo headphone amplifier designed for portable audio equipment with limited board space. It utilizes a unique DirectDrive architecture to produce a ground-referenced output from a single supply, eliminating the need for large DC blocking capacitors, saving cost, board space, and component height. The amplifier has a fixed gain of -1.5V/V (MAX4411) or -2V/V (MAX4411B), reducing component count.

Specifications and features

- No bulky DC-blocking capacitors required

- Fixed -1.5V/V gain eliminates external feedback network

- Ground-referenced outputs eliminate DC-bias voltages on headphone ground pin

- No degradation of low-frequency response due to output capacitors

- Output power: 80mW per channel into 16Ω

- Low total harmonic distortion plus noise (THD+N) of 0.003%

- High power supply rejection ratio (PSRR) of 86dB at 217Hz

- Integrated click-and-pop suppression

- Single-supply operation range: 1.8V to 3.6V

- Low quiescent current of 5mA

- Independent left/right, low-power shutdown controls

- Short-circuit and thermal overload protection

- ±8kV ESD-protected amplifier outputs

- Available in space-saving packages: 16-bump UCSP (2mm x 2mm x 0.6mm) and 20-pin thin QFN (4mm x 4mm x 0.8mm)

Application Scenarios

- Notebook PCs

- Cellular Phones

- PDAs

- MP3 Players

- Smart Phones

- Portable Audio Equipment

Comparison