AD1938 is a high performance, single-chip codec that provides four analogue-to-digital converters (ADCs) with input and eight digital-to-analogue converters (DACs) with single-ended output using the Analog Devices, Inc., patented multibit sigma-delta (Σ-�) architecture. An SPI port is included, allowing a microcontroller to adjust volume and many other parameters. It 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 host clock from the LR clock or from an external crystal, it eliminates the need for a separate high frequency host 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. It is used in applications such as automotive audio systems, home theatre systems, set-top boxes, digital audio effects processors.
- PLL generated or direct host clock, low EMI design
- 3.3V single supply, tolerance for 5V logic inputs
- Supports 24bits and 8KHz to 192KHz sample rates
- Differential ADC input, single-ended DAC output
- Log volume control with autoramp function, SPI controllable for flexibility
- Software-controllable clockless mute, software power-down
- Total harmonic distortion + noise is -96dB typical at (25°C)
- Operating temperature is -40°C to +105°C, qualified for automotive application
- Package style is 48-lead LQFP
Other details
| Brand |
ANALOG DEVICES |
| Part Number |
AD1938WBSTZ |
| Quantity |
Each |
| Technical Data Sheet EN |
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| Product Change Notice EN |
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