Overview
The AD1835AAS-REEL, produced by Analog Devices Inc., is a high-performance, single-chip audio codec designed for professional audio applications. This codec features four stereo digital-to-analog converters (DACs) and one stereo analog-to-digital converter (ADC). Each DAC includes a high-performance digital interpolation filter, a multibit Δ-Σ modulator, and a continuous-time voltage output analog section. The ADC section comprises two 24-bit conversion channels with multibit Δ-Σ modulators and decimation filters, offering a sample rate of up to 96 kHz. The device supports various serial data port modes, including left-justified, right-justified, I2S, and DSP compatible modes, and is controlled via an SPI-compatible serial port.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltages (AVDD, DVDD) | 5.0 | V | ||
| ADC Resolution | 24 | 24 | Bits | |
| Sample Rate (fS) | 48 kHz | 96 kHz | kHz | |
| Power Consumption (Operation) | 320 | mW | ||
| Power Consumption (Power-Down) | 280 | mW | ||
| Temperature Range | -40 | +85 | °C | |
| Package Type | 52-Lead MQFP |
Key Features
- Four stereo DACs and one stereo ADC with 24-bit resolution.
- High-performance digital interpolation filters and multibit Δ-Σ modulators.
- Support for 256 fS, 512 fS, and 768 fS Master Mode Clocks.
- Flexible serial data port with left-justified, right-justified, I2S, and DSP compatible modes.
- TDM interface mode supporting 8-in/8-out using a single SHARC SPORT.
- Power-down and soft power-down modes for power management.
- Separate supply pin for digital interface, allowing 3.3 V power supplies.
- On-chip reference with a nominal value of 2.25 V.
- ESD protection circuitry to prevent damage from electrostatic discharges.
Applications
- DVD video and audio players.
- Home theater systems.
- Automotive audio systems.
- Audio/visual receivers.
- Digital audio effects processors.
Q & A
- What is the resolution of the ADC and DAC in the AD1835AAS-REEL?
The ADC and DAC in the AD1835AAS-REEL have a 24-bit resolution.
- What are the supported sample rates for the ADC section?
The ADC section supports sample rates up to 96 kHz.
- What types of serial data port modes are supported by the AD1835AAS-REEL?
The device supports left-justified, right-justified, I2S, and DSP compatible serial modes.
- How is the AD1835AAS-REEL controlled?
The device is controlled via an SPI-compatible serial port.
- What is the package type of the AD1835AAS-REEL?
The package type is a 52-Lead MQFP.
- What is the temperature range for the AD1835AAS-REEL?
The device is specified for the industrial temperature range of –40°C to +85°C.
- Does the AD1835AAS-REEL have ESD protection?
Yes, the device features proprietary ESD protection circuitry.
- Can the AD1835AAS-REEL be powered by different voltage supplies?
Yes, it can be operated from a single 5 V supply and also has a separate supply pin for its digital interface, allowing 3.3 V power supplies.
- What are some common applications of the AD1835AAS-REEL?
Common applications include DVD video and audio players, home theater systems, automotive audio systems, and digital audio effects processors.
- How many DAC and ADC channels does the AD1835AAS-REEL have?
The device has four stereo DAC channels and one stereo ADC channel.
