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AD1938: 4 ADC/8 DAC with PLL, 192 kHz, 24-Bit Codec Data Sheet (Rev. E)9/28/2006PDF553 kB
Overview
Features and Benefits
- PLL generated or direct master clock
- Low EMI design
- 108 dB DAC/107 dB ADC dynamic range and SNR
- −94 dB THD + N
- Log volume control with autoramp function
- 3.3 V single supply
- Tolerance for 5 V logic inputs
- Supports 24 bits and 8 kHz to 192 kHz sample rates
- Please see data sheet for additional features
Product Details
The AD1938 is a high performance, single-chip codec that provides four analog-to-digital converters (ADCs) with input and eight digital-to-analog converters (DACs) with single-ended 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 AD1938 operates from 3.3 V digital and analog supplies. The AD1938 is available in a 48-lead (single-ended output) LQFP package. Other members of this family include a differential DAC output and I2C® control port version.
The AD1938 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 AD1938 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
Product Categories
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)
Documentation & Resources
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AN-1006: Using the EVAL-ADUSB2EBZ5/19/2020
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AN-1365: AD1933/AD1934/AD1938/AD1939/AD1974 Boot Up Application8/28/2015PDF895 K
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UG-087: Evaluating the AD1940 SigmaDSP Using the EVAL-AD1940MINIBZ8/10/2010PDF796 kB
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UG-045: Evaluating the AD1938 Four ADC/Eight DAC with PLL 192 kHz, 24-Bit Codec2/28/2010PDF1809 kB
Software & Systems Requirements
Evaluation Software
Software Modules
Software Development Tools
SigmaStudio®
Graphical development tool for programming, development, and tuning software for ADI DSP audio processors and A2B® transceivers.
Tools & Simulations
IBIS Models
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| AD1938WBSTZ | Material Declaration | Reliability Data | 48-Lead LQFP (7mm x 7mm) | |
| AD1938WBSTZ-RL | Material Declaration | Reliability Data | 48-Lead LQFP (7mm x 7mm) | |
| AD1938YSTZ | Material Declaration | Reliability Data | 48-Lead LQFP (7mm x 7mm) | |
| AD1938YSTZRL | Material Declaration | Reliability Data | 48-Lead LQFP (7mm x 7mm) | |
| Wafer Fabrication Data |
PCN-PDN Information
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Support & Discussions
AD1938 Discussions
RE: DSP and its ADC circuit design
6 week(s) ago in Precision ADCs
请问1701和1452的正弦波函数随采样变化而频率变化。
24 week(s) ago in Video
Sample & Buy
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.