Overview
The ADAU1977WBCPZ-R7, produced by Analog Devices Inc., is a quad analog-to-digital converter (ADC) designed for high-performance applications. This component integrates four ADCs with direct-coupled inputs capable of handling up to 10 V RMS. It features a multibit sigma-delta (Σ-Δ) architecture with a continuous time front end, which helps in achieving low electromagnetic interference (EMI). The ADAU1977 is particularly suited for automotive audio systems and active noise cancellation systems due to its robust diagnostic capabilities and low power consumption.
Key Specifications
| Parameter | Value |
|---|---|
| Number of ADCs | 4 |
| Input Voltage Range | Up to 10 V RMS |
| Architecture | Multi-bit Sigma-Delta (Σ-Δ) |
| Front End | Continuous Time |
| Power Supply | Single 3.3 V |
| Microphone Bias Voltage | Programmable from 5 V to 9 V |
| Package Type | 40-Lead LFCSP |
| Operating Temperature Range | –40°C to +105°C |
| Control Interface | I2C/SPI |
| Master Clock Source | External clock input or frame clock (sample rate clock) |
Key Features
- Digital volume control with autoramp function and software-controllable clickless mute
- Software power-down capability
- Support for right justified, left justified, I2S justified, and TDM modes
- Master and slave operation modes
- Built-in diagnostic circuitry for detecting faults on input lines and microphone inputs
- IRQ flags for each diagnostic fault to facilitate system design
- On-chip PLL to derive the master clock from an external clock input or frame clock
- Low power architecture to reduce power consumption
Applications
- Automotive audio systems
- Active noise cancellation systems
Q & A
- What is the ADAU1977WBCPZ-R7 used for? The ADAU1977WBCPZ-R7 is used in high-performance applications such as automotive audio systems and active noise cancellation systems.
- How many ADCs does the ADAU1977WBCPZ-R7 integrate? The ADAU1977WBCPZ-R7 integrates four analog-to-digital converters (ADCs).
- What is the input voltage range of the ADAU1977WBCPZ-R7? The input voltage range is up to 10 V RMS.
- What type of architecture does the ADAU1977WBCPZ-R7 use? It uses a multibit sigma-delta (Σ-Δ) architecture with a continuous time front end.
- What is the power supply requirement for the ADAU1977WBCPZ-R7? It requires a single 3.3 V power supply.
- Can the microphone bias voltage be programmed? Yes, the microphone bias voltage is programmable from 5 V to 9 V.
- What type of package does the ADAU1977WBCPZ-R7 come in? It comes in a 40-Lead LFCSP package.
- What is the operating temperature range of the ADAU1977WBCPZ-R7? The operating temperature range is –40°C to +105°C.
- What control interfaces are available on the ADAU1977WBCPZ-R7? The available control interfaces are I2C and SPI.
- How does the ADAU1977WBCPZ-R7 derive its master clock? The master clock can be derived from an external clock input or from the frame clock (sample rate clock) using the on-chip PLL.
