Overview
The ADAU1978WBCPZ-RL, produced by Analog Devices Inc., is a quad analog-to-digital converter (ADC) designed for high-performance audio applications. This component integrates four 24-bit ADCs with a multibit sigma-delta (Σ-Δ) architecture and a continuous time front end, which minimizes electromagnetic interference (EMI). The ADAU1978WBCPZ-RL features an on-chip phase-locked loop (PLL) for generating the necessary clock signals and supports sample rates from 8 kHz to 192 kHz. It is controlled via I2C or SPI interfaces, allowing for flexible configuration and control by a microcontroller.
Key Specifications
| Parameter | Value |
|---|---|
| Number of ADCs | 4 |
| Resolution | 24 bits |
| Sample Rates | 8 kHz to 192 kHz |
| Analog Input Type | Differential, 2 V rms |
| Dynamic Range | 109 dB |
| Total Harmonic Distortion + Noise (THD + N) | −95 dB |
| Power Supply | Single 3.3 V |
| Digital Interface | I2C, SPI |
| Package Type | 40-lead LFCSP (6x6 mm) |
Key Features
- Four high-performance, 24-bit ADCs with multibit sigma-delta (Σ-Δ) architecture and continuous time front end for low EMI.
- On-chip phase-locked loop (PLL) for master clock generation.
- Support for sample rates from 8 kHz to 192 kHz.
- Digital volume control with autoramp function.
- Software-controllable clickless mute.
- Software power-down capability.
- Right justified, left justified, I2S, and TDM modes.
- Master and slave operation modes.
- Selectable digital high-pass filter.
Applications
- Automotive audio systems.
- Active noise cancellation systems.
Q & A
- What is the resolution of the ADCs in the ADAU1978WBCPZ-RL?
The ADCs in the ADAU1978WBCPZ-RL have a resolution of 24 bits. - What are the supported sample rates for the ADAU1978WBCPZ-RL?
The ADAU1978WBCPZ-RL supports sample rates from 8 kHz to 192 kHz. - What type of analog inputs does the ADAU1978WBCPZ-RL have?
The ADAU1978WBCPZ-RL has differential analog inputs capable of handling 2 V rms signals. - What is the dynamic range of the ADAU1978WBCPZ-RL?
The dynamic range of the ADAU1978WBCPZ-RL is 109 dB. - What is the total harmonic distortion + noise (THD + N) of the ADAU1978WBCPZ-RL?
The THD + N of the ADAU1978WBCPZ-RL is −95 dB. - What is the power supply requirement for the ADAU1978WBCPZ-RL?
The ADAU1978WBCPZ-RL requires a single 3.3 V power supply. - What digital interfaces are supported by the ADAU1978WBCPZ-RL?
The ADAU1978WBCPZ-RL supports I2C and SPI digital interfaces. - What is the package type of the ADAU1978WBCPZ-RL?
The ADAU1978WBCPZ-RL is packaged in a 40-lead LFCSP (6x6 mm). - What are some common applications of the ADAU1978WBCPZ-RL?
The ADAU1978WBCPZ-RL is commonly used in automotive audio systems and active noise cancellation systems. - Does the ADAU1978WBCPZ-RL support software-controllable features?
Yes, the ADAU1978WBCPZ-RL supports software-controllable features such as clickless mute and power-down.
