Overview
The AD1938WBSTZ-RL is a high-performance, single-chip codec produced by Analog Devices Inc. This component integrates four analog-to-digital converters (ADCs) and eight digital-to-analog converters (DACs), utilizing Analog Devices' patented multibit sigma-delta (Σ-Δ) architecture. The AD1938 operates from a 3.3 V digital and analog supply and is available in a 48-lead LQFP package. It is designed for low Electromagnetic Interference (EMI) and includes an on-board Phase-Locked Loop (PLL) to derive the master clock from the LR clock or an external crystal, eliminating the need for a separate high-frequency master clock.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (AVDD, DVDD) | 3.3 | V |
| Temperature Range | -40°C to +125°C | °C |
| Master Clock Frequency | 12.288 MHz | MHz |
| Sample Rate | 8 kHz to 192 kHz | kHz |
| Word Width | 24 bits | bits |
| DAC Dynamic Range and SNR | 108 dB | dB |
| ADC Dynamic Range and SNR | 107 dB | dB |
| THD + N | -94 dB | dB |
| Package Type | 48-lead LQFP | - |
Key Features
- PLL generated or direct master clock
- Low EMI design
- 108 dB DAC and 107 dB ADC dynamic range and SNR
- -94 dB THD + N
- Log volume control with autoramp function
- 3.3 V single supply with tolerance for 5 V logic inputs
- SPI controllable for flexibility
- Software-controllable clickless mute and power-down
- Supports right-justified, left-justified, I2S-justified, and TDM modes
- Master and slave modes up to 16-channel input/output
Applications
- Automotive audio systems
- Home Theater Systems
- Set-top boxes
- Digital audio effects processors
Q & A
- What is the AD1938WBSTZ-RL used for?
The AD1938WBSTZ-RL is a high-performance codec used in various audio applications, including automotive audio systems, home theater systems, set-top boxes, and digital audio effects processors.
- What is the supply voltage for the AD1938WBSTZ-RL?
The AD1938WBSTZ-RL operates from a 3.3 V digital and analog supply.
- What is the dynamic range of the DAC and ADC in the AD1938WBSTZ-RL?
The DAC has a dynamic range and SNR of 108 dB, while the ADC has a dynamic range and SNR of 107 dB.
- What is the THD + N of the AD1938WBSTZ-RL?
The THD + N of the AD1938WBSTZ-RL is -94 dB.
- What package type is the AD1938WBSTZ-RL available in?
The AD1938WBSTZ-RL is available in a 48-lead LQFP package.
- Does the AD1938WBSTZ-RL support multiple sample rates?
Yes, the AD1938WBSTZ-RL supports sample rates from 8 kHz to 192 kHz.
- How is the master clock generated in the AD1938WBSTZ-RL?
The master clock can be generated using the on-board PLL from the LR clock or an external crystal.
- Does the AD1938WBSTZ-RL have low EMI design?
Yes, the AD1938WBSTZ-RL is designed for low EMI, incorporating measures in both system and circuit design architectures.
- What communication protocols are supported by the AD1938WBSTZ-RL?
The AD1938WBSTZ-RL supports SPI communication for adjusting volume and other parameters.
- Can the AD1938WBSTZ-RL operate in master and slave modes?
Yes, the AD1938WBSTZ-RL supports master and slave modes up to 16-channel input/output.
