Overview
Features and Benefits
- PLL generated or direct master clock
- Low EMI design
- 112 dB DAC/107 dB ADC dynamic range and SNR
- −94 dB THD + N
- Differential ADC input
- Single 3.3 V supply
- Tolerance for 5 V logic inputs
- See datasheet for additional features
Product Details
The AD1939 is a high performance, single-chip codec that provides four analog-to-digital converters (ADCs) with differential input, and eight digital-to-analog converters (DACs) with differential output using the Analog Devices, Inc. patented multibit sigma-delta (Σ-Δ) architecture. An SPI port is included, allowing a microcontroller to adjust volume and many other parameters. The AD1939 operates from 3.3 V digital and analog supplies. The AD1939 is available in a 64-lead (differential output) LQFP package.
The AD1939 is designed for low EMI. This consideration is apparent in both the system and circuit design architectures. By using the on-board PLL to derive the master clock from the LR clock or from an external crystal, the AD1939 eliminates the need for a separate high frequency master clock and can also be used with a suppressed bit clock. The DACs and ADCs are designed using the latest Analog Devices continuous time architectures to further minimize EMI. By using 3.3 V supplies, power consumption is minimized, further reducing emissions.
APPLICATIONS
- Automotive audio systems
- Home Theater Systems
- Set-top boxes
- Digital audio effects processors
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Markets and Technologies
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (2)
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SigmaStudio®
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IBIS Models
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PCN-PDN Information
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