Overview
The AD1938WBSTZ is a high-performance, single-chip codec produced by Analog Devices Inc. This device integrates four analog-to-digital converters (ADCs) and eight digital-to-analog converters (DACs), utilizing the patented multibit sigma-delta (Σ-Δ) architecture. It is designed to provide high-fidelity audio performance with a dynamic range of 108 dB for DACs and 107 dB for ADCs, along with a signal-to-noise ratio (SNR) of up to 107 dB and a total harmonic distortion plus noise (THD + N) of -94 dB. The AD1938WBSTZ operates on a 3.3 V single supply and supports sample rates from 8 kHz to 192 kHz.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of ADCs | 4 | |
| Number of DACs | 8 | |
| ADC Resolution | 24 bits | |
| DAC Dynamic Range | 108 dB | |
| ADC Dynamic Range | 107 dB | |
| THD + N | -94 dB | |
| Supply Voltage | 3.3 V | |
| Sample Rates | 8 kHz to 192 kHz | |
| Package Type | 48-lead LQFP | |
| Interface | SPI, I2C, Serial |
Key Features
- High-performance audio codec with 4 ADCs and 8 DACs using multibit sigma-delta (Σ-Δ) architecture.
- Log volume control with autoramp function and software-controllable clickless mute.
- Supports 24-bit resolution and sample rates from 8 kHz to 192 kHz.
- Onboard PLL for deriving the master clock from the LR clock or an external crystal, reducing the need for a separate high-frequency master clock.
- Low EMI design with 3.3 V supplies to minimize power consumption and emissions.
- Tolerance for 5 V logic inputs.
- Right-justified, left-justified, I2S-justified, and TDM modes, with master and slave modes up to 16-channel input/output.
- Software power-down and SPI controllable for flexibility.
Applications
- Automotive audio systems.
- Home Theater Systems.
- Set-top boxes.
- Digital audio effects processors.
Q & A
- What is the AD1938WBSTZ?
The AD1938WBSTZ is a high-performance, single-chip codec produced by Analog Devices Inc., featuring four ADCs and eight DACs.
- What is the dynamic range of the ADCs and DACs in the AD1938WBSTZ?
The ADCs have a dynamic range of 107 dB, while the DACs have a dynamic range of 108 dB.
- What are the supported sample rates for the AD1938WBSTZ?
The AD1938WBSTZ supports sample rates from 8 kHz to 192 kHz.
- What type of package does the AD1938WBSTZ come in?
The AD1938WBSTZ is available in a 48-lead LQFP package.
- Does the AD1938WBSTZ support multiple interface types?
Yes, it supports SPI, I2C, and serial interfaces.
- What is the power supply voltage for the AD1938WBSTZ?
The AD1938WBSTZ operates on a 3.3 V single supply.
- What are some of the key applications for the AD1938WBSTZ?
Key applications include automotive audio systems, home theater systems, set-top boxes, and digital audio effects processors.
- Does the AD1938WBSTZ have any special features for volume control?
Yes, it features log volume control with an autoramp function and software-controllable clickless mute.
- How does the AD1938WBSTZ manage clock signals?
The AD1938WBSTZ uses an onboard PLL to derive the master clock from the LR clock or an external crystal, eliminating the need for a separate high-frequency master clock.
- Is the AD1938WBSTZ designed to minimize EMI?
Yes, the AD1938WBSTZ is designed with low EMI considerations in both system and circuit design architectures.
