Key facts
- Brand
- Analog Devices
- Model
- AD1981B
- Category
- Audio Codec
- Documents
- 3
- Languages
- EN
- Last added
- 2012-03-27
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Analog Devices AD1981BL Codec Datasheet
The AD1981BL is an AC'97‑compatible stereo audio codec featuring a 20‑bit PCM DAC, integrated headphone amplifier, multiple line‑level and microphone inputs, and S/PDIF output. It supports variable sample rates from 7.04 kHz to 48 kHz with a dynamic range greater than 90 dB.
The document lists electrical specifications, timing parameters, power‑down states, pin functions, and register maps, along with package dimensions and ordering information for the 48‑lead LQFP version.
Analog Devices AD1981B specifications
| Sample Rate | 48 kHz |
|---|---|
| Input Voltage (LINE_IN, AUX, CD, PHONE_IN) | 0.707 Vrms |
| Input Impedance | 20 kΩ |
| Power Supply Range | 3.0 – 3.47 V |
| DAC Resolution | 16 Bits |
| Dynamic Range | >90 dB |
All Analog Devices AD1981B documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the power‑supply voltage range for the AD1981BL?
The device operates with analog and digital supplies between 3.0 V and 3.47 V.
What maximum sample rate does the AD1981BL support?
It supports variable sample rates up to 48 kHz (full‑duplex from 7.04 kHz to 48 kHz).
What is the maximum dynamic range of the AD1981B?
The codec provides a dynamic range of greater than 90 dB.
What package does the AD1981B use?
The device is offered in a 48‑lead low‑profile quad flat package (LQFP, ST‑48).
What is the operating temperature range of the AD1981BL?
The device is rated for ambient temperatures from 0 °C to 70 °C.
From: Analog Devices AD1981BL AC ’97 SoundMAX Codec Datasheet
What is the digital supply voltage range for the AD1981BL?
The digital supply (DVDD) may be between –0.3 V and +3.6 V.
From: Analog Devices AD1981BL AC ’97 SoundMAX Codec Datasheet