Key facts
- Brand
- Analog Devices
- Model
- AD1881
- Category
- Other Electronics
- Documents
- 3
- Languages
- EN
- Last added
- 2012-08-02
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Analog Devices AD1881A Audio Codec Handbook
The AD1881A is an AC’97 SoundMAX audio codec designed for high‑performance PC audio applications, providing 16‑bit stereo full‑duplex conversion and a range of analog and digital features.
This handbook contains functional descriptions, pin‑function tables, timing parameters, electrical specifications, recommended circuit connections, and layout guidelines for integrating the codec.
Analog Devices AD1881 specifications
| Required Crystal Frequency | 24.576MHz |
|---|---|
| Frequency Tolerance | less +100 PPM |
| Operating Temperature Range | 0°C to 70°C |
| Recommended Load Capacitance | 18pF |
| Maximum Drive Level | 1 mw |
Source: ANALOG DEVICES Engineer To Engineer Note EE-59 Codec Soundbytes Manual
All Analog Devices AD1881 documents by type
How to use the product for one specific task, with worked examples.
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What type of crystal is recommended for AC97 codecs?
ADI recommends QUARTZ crystals only because they meet the required frequency tolerance and stability.
From: ANALOG DEVICES Engineer To Engineer Note EE-59 Codec Soundbytes Manual
Can ceramic crystals be used for AC97 codecs?
Ceramic crystals are not recommended as they have frequency tolerances greater than +5000 PPM, which may result in audio performance less than AC97.
From: ANALOG DEVICES Engineer To Engineer Note EE-59 Codec Soundbytes Manual
What is the typical input voltage for the LINE_IN analog input?
The typical RMS input voltage for LINE_IN (and other line inputs) is 1 V rms.
What is the maximum operating temperature of the AD1881A?
The device can operate up to 70 °C ambient temperature.
What is the maximum sample rate supported by the AD1881A?
The AD1881A supports up to 48 kHz sampling rate with 1 Hz resolution.
What is the input impedance of the AD1881A?
The input impedance is specified as 20 kΩ.