Overview
The ADAU1978WBCPZ from Analog Devices Inc. is a high-performance quad analog-to-digital converter (ADC) designed for various audio and noise cancellation applications. This component features four 24-bit sigma-delta (Σ-Δ) ADCs with 2 V rms capable ac-coupled inputs, utilizing a multibit Σ-Δ architecture with a continuous time front end to minimize electromagnetic interference (EMI). The ADAU1978WBCPZ operates on a single 3.3 V supply and internally generates the required digital DVDD supply, contributing to its low power consumption. It is available in a 40-lead LFCSP package and is qualified for automotive applications.
Key Specifications
| Parameter | Value |
|---|---|
| Converter Type | Audio |
| Architecture | Delta-Sigma |
| Resolution | 24 bits |
| Number of ADCs | 4 |
| Number of Input Channels | 4 |
| Sampling Rate | 8 kHz to 192 kHz |
| Digital Interface Type | Serial (4-Wire), I2C, SPI |
| Input Type | Pseudo-Differential, Differential |
| Input Voltage | 2 V rms |
| Voltage Supply Source | Single (3.3 V) |
| Operating Temperature Range | -40°C to 105°C |
| Package Type | 40-Lead LFCSP (6mm x 6mm w/ EP) |
| Dynamic Range | 106 dB |
| Total Harmonic Distortion + Noise (THD + N) | -95 dB |
Key Features
- Advanced ADC architecture using multibit sigma-delta (Σ-Δ) converters with continuous time front end for low EMI.
- On-chip phase-locked loop (PLL) for master clock derivation from external clock input or frame clock.
- Selectable digital high-pass filter and I2C/SPI controllable for flexibility.
- Digital volume control with autoramp function.
- Software-controllable clickless mute and software power-down.
- Support for right-justified, left-justified, I2S, and TDM modes.
- Master and slave operation modes.
- Low power architecture reducing power consumption.
Applications
- Automotive audio systems.
- Active noise cancellation systems.
- Advanced audio systems.
- Automotive sound upgrades.
Q & A
- Q: What is the ADAU1978WBCPZ?
A: The ADAU1978WBCPZ is a quad analog-to-digital converter (ADC) from Analog Devices Inc., featuring four 24-bit sigma-delta ADCs with 2 V rms capable ac-coupled inputs.
- Q: What is the operating voltage of the ADAU1978WBCPZ?
A: The ADAU1978WBCPZ operates on a single 3.3 V supply.
- Q: What are the key applications of the ADAU1978WBCPZ?
A: The key applications include automotive audio systems, active noise cancellation systems, and advanced audio systems.
- Q: What is the dynamic range of the ADAU1978WBCPZ?
A: The ADAU1978WBCPZ has a dynamic range of 106 dB.
- Q: What digital interfaces does the ADAU1978WBCPZ support?
A: The ADAU1978WBCPZ supports I2C and SPI digital interfaces.
- Q: What is the sampling rate range of the ADAU1978WBCPZ?
A: The sampling rate range is from 8 kHz to 192 kHz.
- Q: Is the ADAU1978WBCPZ qualified for automotive applications?
A: Yes, the ADAU1978WBCPZ is qualified for automotive applications.
- Q: What is the package type of the ADAU1978WBCPZ?
A: The ADAU1978WBCPZ is available in a 40-lead LFCSP package.
- Q: Does the ADAU1978WBCPZ have a built-in phase-locked loop (PLL)?
A: Yes, the ADAU1978WBCPZ has an on-chip PLL for master clock derivation.
- Q: What warranty is offered for the ADAU1978WBCPZ-RL?
A: A 1-year warranty is offered for the ADAU1978WBCPZ-RL, covering defects in materials and workmanship under normal use.
