Overview
The ADAU1977WBCPZ, produced by Analog Devices Inc., is a high-performance quad analog-to-digital converter (ADC) designed for various audio and noise cancellation applications. This component incorporates four direct-coupled differential inputs capable of handling 10 V rms, making it suitable for automotive audio systems and active noise cancellation systems. The ADAU1977 uses a multibit sigma-delta (Σ-Δ) architecture with a continuous time front end, which helps in reducing electromagnetic interference (EMI). It also features built-in diagnostic circuitry for detecting faults on input lines and microphone inputs, enhancing system reliability and ease of design.
Key Specifications
| Parameter | Specification |
|---|---|
| Number of ADCs | 4 |
| Input Type | Direct-coupled differential inputs |
| Input Voltage Range | −0.3 V to +18 V |
| ADC Dynamic Range | 109 dB |
| THD + N | −95 dB |
| Sample Rates | 8 kHz to 192 kHz |
| Resolution | 24-bit |
| Supply Voltage | 3.3 V |
| Package Type | 40-lead LFCSP (6mm x 6mm w/ EP) |
| Operating Temperature | −40°C to +105°C |
| Digital Interface | I2C/SPI |
| Microphone Bias Voltage | Programmable from 5 V to 9 V |
Key Features
- Four high-performance analog-to-digital converters with multibit sigma-delta (Σ-Δ) architecture and continuous time front end for low EMI.
- Direct-coupled differential inputs capable of 10 V rms.
- Built-in diagnostic circuitry for detecting faults on input lines and microphone inputs.
- Programmable microphone bias voltage from 5 V to 9 V.
- On-chip PLL for deriving the master clock from an external clock input or frame clock.
- I2C/SPI control port.
- Low power architecture with a single 3.3 V supply.
- Support for various digital audio formats including right justified, left justified, I2S justified, and TDM modes.
- Master and slave operation modes.
Applications
- Automotive audio systems.
- Active noise cancellation systems.
Q & A
- What is the ADAU1977WBCPZ used for?
The ADAU1977WBCPZ is used in automotive audio systems and active noise cancellation systems due to its high-performance analog-to-digital conversion capabilities. - How many ADCs does the ADAU1977WBCPZ have?
The ADAU1977WBCPZ has four high-performance analog-to-digital converters. - What is the input voltage range of the ADAU1977WBCPZ?
The input voltage range is −0.3 V to +18 V. - What is the dynamic range of the ADCs in the ADAU1977WBCPZ?
The dynamic range of the ADCs is 109 dB. - What is the THD + N of the ADAU1977WBCPZ?
The THD + N is −95 dB. - What are the sample rates supported by the ADAU1977WBCPZ?
The sample rates supported are from 8 kHz to 192 kHz. - What is the resolution of the ADCs in the ADAU1977WBCPZ?
The resolution is 24-bit. - What is the supply voltage required for the ADAU1977WBCPZ?
The supply voltage required is 3.3 V. - What type of package does the ADAU1977WBCPZ come in?
The ADAU1977WBCPZ comes in a 40-lead LFCSP package (6mm x 6mm w/ EP). - What is the operating temperature range of the ADAU1977WBCPZ?
The operating temperature range is −40°C to +105°C.
