The WM8740 is a 24‑bit high‑performance stereo DAC supporting up to 192 kHz sampling, selectable digital filters and both hardware and SPI control.
The WM8740 is a high‑performance 24‑bit stereo DAC designed for audio applications such as CD, DVD, home‑theatre and digital‑TV systems. It accepts 16‑ to 24‑bit audio data and operates from 8 kHz to 192 kHz sampling rates.
Key features include a selectable sharp or slow digital‑filter roll‑off (or bypass), hardware‑mode pins and an SPI‑compatible serial control port for mute, attenuation and phase reversal, and a compact 28‑pin SSOP package.
| Signal‑to‑Noise Ratio (mono, 48 kHz) | 120 dB |
|---|---|
| Signal‑to‑Noise Ratio (stereo, 48 kHz) | 117 dB |
| Supported Sampling Frequency | 8 kHz – 192 kHz |
| Digital Filter Options | Sharp roll‑off, slow roll‑off, bypass |
| Package Type | 28‑pin SSOP |
| Supply Voltage Range | -0.3 V to +7.0 V |
| Analog Supply Current (AVDD = 5 V) | 13 mA |
| Differential Output Level | 2 VRMS into 10 kΩ |
It supports audio sampling rates from 8 kHz up to 192 kHz.
Control is available via hardware pins or an SPI‑compatible serial control port.
The device offers a selectable sharp or slow roll‑off filter, and the filter can be bypassed.
The stereo SNR is 117 dB at 48 kHz.