Description

The STW55NM50 is a field effect tube (MOSFET) component model. It is a high-performance DAC with a dynamic range of 103 dB for the whole audio path. The device can be driven by either the system clock or the 32 kHz RTC clock. It is easy to integrate and can be directly connected to the battery, thanks to its embedded power management. The device has a small footprint and requires only a few components in the EBOM. It also features a 50 mW headset amplifier of "True-ground" type, which eliminates the need for a coupling capacitor.

Specifications and features

- DAC: 24-bit audio DAC with 103 dB dynamic range

- Asynchronous DAC path with 8 to 48 kHz sampling rate

- Supply: Direct connection to the battery with integrated power management

- Inputs: I2S digital input

- Analog output drivers:

- Stereo headset amplifier:

- 'True ground' output amplifier (no coupling capacitor)

- Driving capacity: 2 x 50 mW over 32 Ω up to 2 x 80 mW over 32 Ω

- Plug detection

- Click/pop suppression

Application Scenarios

The STW55NM50 is suitable for various audio applications, especially in mobile handsets. It can be used in devices that require high-quality audio output and efficient power management. The small footprint of the device makes it ideal for compact designs.

Comparison

- High-performance DAC with a dynamic range of 103 dB

- Easy integration and direct connection to the battery

- Small footprint and reduced component count

- 'True-ground' headset amplifier eliminates the need for a coupling capacitor

- Limited driving capacity compared to some other models