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Product Detailed Parameters
- Description：IC STEREO DAC
- Series：*
- Mfr：Cirrus Logic Inc.
- Package：Bulk
- Type：-
- Number of Channels：-
- Resolution (Bits)：-
- Sampling Rate (Per Second)：-
- Data Interface：-
- Voltage Supply Source：-
- Voltage - Supply：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The WM8521H9GED/V is a stereo digital-to-analog converter (DAC) manufactured by Cirrus Logic, formerly Wolfson Microelectronics. It integrates an output operational amplifier stage designed to generate a 2.0Vrms line-level output signal directly from a 9V analog supply, reducing external component requirements. The device utilizes a 24-bit multi-bit sigma-delta architecture with oversampling digital interpolation filters. It supports digital audio input word lengths from 16 to 32 bits and sampling rates ranging from 8kHz to 96kHz. Key electrical specifications include a signal-to-noise ratio of 98dB ('A' weighted at 48kHz) and total harmonic distortion of -81dB ('A' weighted at 48kHz).
Feature Summary
- Integrated output op-amp stage generating 2.0Vrms output at 9V supply.
- 24-bit resolution with 98dB SNR and -81dB THD at 48kHz sampling rate.
- Supports I2S, Right Justified, and DSP digital audio interface formats.
- Operates on 8.2V to 13.2V analog supply and 2.7V to 3.6V digital supply.
Applications
- DVD Players
- Digital TV
- Digital Set Top Boxes
- A/V Receivers
Part Context
The WM8521 series was originally developed by Wolfson Microelectronics before its acquisition by Cirrus Logic. The 'H9' variant specifically denotes the version optimized for 9V analog supplies to achieve the 2Vrms output, distinguishing it from the 'HC' variant which requires 12V. The part is housed in a 14-pin SOIC package.
Replacement Considerations
The WM8521HC is a pin-compatible alternative within the same family that provides 2Vrms output at a 12V supply voltage instead of 9V. Designers must verify the available analog supply rail when selecting between the H9 and HC variants.
