Overview
The ADAU1962A, produced by Analog Devices Inc., is a high-performance, single-chip digital-to-analog converter (DAC) that provides 12 DAC channels with differential or single-ended outputs. This device utilizes Analog Devices' patented multibit Σ-Δ architecture and is designed for low electromagnetic interference (EMI). It operates from 2.5 V digital and 3.3 V analog supplies, with a linear regulator to generate the digital supply voltage from the analog supply voltage. The ADAU1962A is available in an 80-lead LQFP package and supports SPI and I²C interfaces for flexible control by a microcontroller.
Key Specifications
| Parameter | Value |
|---|---|
| Converter Type | 24-Bit Digital-to-Analog Converter (DAC) |
| Number of DAC Channels | 12 |
| Output Type | Differential or Single-Ended |
| DAC Dynamic Range (A-weighted, Differential) | 114 dB |
| Total Harmonic Distortion plus Noise (THD + N), Differential | −97 dB |
| DAC Dynamic Range (A-weighted, Single-Ended) | 110 dB |
| Total Harmonic Distortion plus Noise (THD + N), Single-Ended | −95 dB |
| Supply Voltages | 2.5 V (Digital), 3.3 V (Analog and I/O) |
| Total Quiescent Power | 249 mW |
| Package Type | 80-Lead LQFP (14mm x 14mm) |
| Sample Rates | 32 kHz to 192 kHz |
| Interface | SPI, I²C |
Key Features
- Differential or single-ended voltage DAC output
- High dynamic range and low THD + N for both differential and single-ended outputs
- Low electromagnetic interference (EMI) design using on-board PLL and continuous time architectures
- Support for 24-bit and sample rates from 32 kHz to 192 kHz
- Log volume control with autoramp function and software-controllable clickless mute
- Temperature sensor with digital readout and ±3°C accuracy
- Right justified, left justified, I²S, and TDM modes
- Master and slave modes with up to 12-channel input/output
- Linear regulator to generate digital supply voltage from analog supply voltage
Applications
- Automotive audio systems
- Home theater systems
- Digital audio effects processors
Q & A
- What is the ADAU1962A?
The ADAU1962A is a high-performance, single-chip digital-to-analog converter (DAC) that provides 12 DAC channels with differential or single-ended outputs.
- What are the key supply voltages for the ADAU1962A?
The ADAU1962A operates from 2.5 V digital and 3.3 V analog and I/O supplies.
- What is the dynamic range of the ADAU1962A?
The ADAU1962A has a dynamic range of 114 dB (A-weighted, differential) and 110 dB (A-weighted, single-ended).
- What are the THD + N specifications for the ADAU1962A?
The THD + N is −97 dB for differential outputs and −95 dB for single-ended outputs.
- What interfaces does the ADAU1962A support?
The ADAU1962A supports SPI and I²C interfaces.
- What is the package type of the ADAU1962A?
The ADAU1962A is available in an 80-lead LQFP package.
- What are the typical applications of the ADAU1962A?
The ADAU1962A is typically used in automotive audio systems, home theater systems, and digital audio effects processors.
- How does the ADAU1962A minimize EMI?
The ADAU1962A minimizes EMI through its on-board PLL, continuous time architectures, and the use of 2.5 V digital supplies.
- What is the total quiescent power consumption of the ADAU1962A?
The total quiescent power consumption is 249 mW.
- Does the ADAU1962A support multiple sample rates?
Yes, the ADAU1962A supports sample rates from 32 kHz to 192 kHz.
