Key facts
- Brand
- Analog Devices
- Model
- AD1940
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-05-03
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Analog Devices AD1940/AD1941 Audio Processor Manual
The AD1940 and AD1941 are 28‑bit SigmaDSP audio processors offering up to 16‑channel digital audio, programmable RAM, and a flexible serial data interface. The document provides detailed specifications, electrical characteristics, and functional block diagrams for system integration.
Key sections include specifications, digital I/O and timing, PLL and regulator details, absolute maximum ratings, and package dimensions. The manual also contains timing diagrams for the SPI and PC ports and an ordering guide for the 48‑lead LQFP package.
Analog Devices AD1940 specifications
| Supply Voltage (VDD) | 2.5 V |
|---|---|
| Input Voltage LO (V_IL) | 0.8 V |
| Maximum Junction Temperature | 135 °C |
| Package | 48‑lead LQFP |
All Analog Devices AD1940 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What is the maximum audio sample rate supported by the AD1940/AD1941?
The processors accept sample rates up to 192 kHz.
Which control interface does the AD1940 use?
The AD1940 is controlled by a 4‑wire SPI port.
What is the supply voltage range for the AD1940/AD1941?
The device operates from 2.25 V to 2.75 V supply voltage.
What is the lock time of the PLL?
The PLL lock time is specified as 3 ms to 20 ms.
What is the supply voltage range for the AD1940/AD1941?
The device operates from 2.25 V to 2.75 V supply voltage.
Which clock multipliers does the PLL support?
The PLL can generate MCLK from 64×fs, 256×fs, 384×fs, or 512×fs.