Overview
The AD1835AASZ, produced by Analog Devices Inc., is a high-performance single-chip CODEC (Coder-Decoder) that integrates four stereo Digital-to-Analog Converters (DACs) and one stereo Analog-to-Digital Converter (ADC). This device is designed to provide superior audio quality and flexibility, making it suitable for a wide range of audio applications. Each DAC includes a high-performance digital interpolation filter, a multi-bit sigma-delta modulator featuring Analog Devices’ patented technology, and a continuous-time voltage output analog section. The ADC section comprises two 24-bit conversion channels with multi-bit sigma-delta modulators and decimation filters. The AD1835AASZ also features an on-chip reference with a nominal value of 2.25 V and supports various serial interface modes for seamless integration with different audio systems.
Key Specifications
| Parameter | Description |
|---|---|
| Number of DACs | Four stereo DACs (eight channels total) |
| Number of ADCs | One stereo ADC (two channels total) |
| Sample Rate | Up to 96 kHz, with one DAC supporting up to 192 kHz |
| Word Length | 16-bit, 20-bit, 24-bit |
| THD + N (DAC) | -95 dB |
| SNR and Dynamic Range (DAC) | 108 dB |
| THD + N (ADC) | -95 dB |
| SNR and Dynamic Range (ADC) | 105 dB |
| Volume Control | On-chip volume controls per channel with 1024 step linear scale |
| Power Supply | Single 5 V supply with separate 3.3 V digital interface supply pin |
| Package | 52-Lead MQFP (13.2mm x 10mm) |
| Temperature Range | -40°C to +85°C |
Key Features
- High-performance digital interpolation filters and multi-bit sigma-delta modulators for each DAC and ADC.
- Supports 256 x fS, 512 x fS, and 768 x fS Master Mode Clocks.
- Flexible serial interface with Right-Justified, Left-Justified, I2S, and DSP compatible serial modes.
- On-chip volume controls per channel with 1024 step linear scale and clickless mute functions.
- Digital de-emphasis processing and power-down mode plus soft power-down mode.
- Differential output for optimum performance and on-chip reference with a nominal value of 2.25 V.
- Support for TDM interface mode with up to 8-in/8-out using a single SHARC® SPORT.
Applications
- DVD Video and Audio Players
- Home Theater Systems
- Automotive Audio Systems
- Audio/Visual Receivers
- Digital Audio Effects Processors
Q & A
- What is the AD1835AASZ?
The AD1835AASZ is a high-performance single-chip CODEC featuring four stereo DACs and one stereo ADC, designed for superior audio quality and flexibility.
- What are the key specifications of the AD1835AASZ?
The device supports up to 96 kHz sample rates, 16-/20-/24-bit word lengths, and has THD + N and SNR specifications of -95 dB and 105/108 dB respectively for ADCs and DACs.
- What types of interfaces does the AD1835AASZ support?
The AD1835AASZ supports Right-Justified, Left-Justified, I2S, and DSP compatible serial modes, as well as TDM interface mode.
- What is the power supply requirement for the AD1835AASZ?
The device can be operated from a single 5 V supply and also features a separate 3.3 V digital interface supply pin.
- What are the temperature range specifications for the AD1835AASZ?
The device is specified for the industrial temperature range of -40°C to +85°C.
- What are some common applications of the AD1835AASZ?
Common applications include DVD video and audio players, home theater systems, automotive audio systems, audio/visual receivers, and digital audio effects processors.
- Does the AD1835AASZ have on-chip volume controls?
Yes, the device features on-chip volume controls per channel with a 1024 step linear scale and clickless mute functions.
- What is the package type of the AD1835AASZ?
The device is available in a 52-Lead MQFP package.
- Does the AD1835AASZ support digital de-emphasis processing?
Yes, the device supports digital de-emphasis processing.
- How does the AD1835AASZ handle power management?
The device features power-down mode plus soft power-down mode for efficient power management.
