Overview
The AD1837AASZ is a general-purpose audio codec produced by Analog Devices Inc. This component is designed to provide high-quality audio conversion and processing capabilities. It features two analog-to-digital converters (ADCs) and eight digital-to-analog converters (DACs), making it suitable for a wide range of audio applications. The AD1837AASZ operates at sample rates up to 96 kHz for the ADCs and up to 192 kHz for the DACs, with a resolution of 24 bits. The device includes various interface modes such as I2S, LJ, RJ, and DSP, ensuring compatibility with different audio controllers and DSP chips.
Key Specifications
| Parameter | Value |
|---|---|
| Number of ADCs | 2 |
| Number of DACs | 8 |
| ADC/DAC Resolution | 24 bits |
| ADC Sample Rate | Up to 96 kHz |
| DAC Sample Rate | Up to 192 kHz (DAC 1 only) |
| Dynamic Range (Typical) | 105 dB (ADCs), 108 dB (DACs) |
| Signal to Noise Ratio (Typical) | 105 dB (ADCs), 108 dB (DACs) |
| Total Harmonic Distortion + Noise (THD+N) | Not specified in provided sources, but typically very low for high-quality audio codecs |
| Operating Supply Voltage (Digital/Analog) | 4.5V to 5.5V |
| Operating Temperature | -40°C to 85°C |
| Package Type | 52-MQFP (10x10) |
| Mounting Type | Surface Mount |
Key Features
- Flexible Serial Interface: Supports various interface modes including I2S, LJ, RJ, and DSP, allowing glueless connection to DSP chips, AES/EBU receivers, and sample rate converters.
- High-Quality Conversion: 24-bit resolution for both ADCs and DACs, ensuring high-quality audio conversion.
- Independent Attenuators: Each DAC channel has its own independently programmable attenuator, adjustable in 1024 linear steps.
- Digital High-Pass Filter: The ADC signal path includes a digital high-pass filter to remove dc offset from the analog input signal.
- Packed Data Modes: Allows access to all DACs and ADCs using a single TDM data pin, enhancing data transfer efficiency.
- Stereo Replicate Feature: Enables copying of audio data from the first DAC pair to the other DACs, simplifying audio signal distribution.
Applications
- Audio Equipment: Suitable for professional audio equipment, home audio systems, and consumer electronics requiring high-quality audio conversion.
- Automotive Systems: Can be used in automotive audio systems due to its robust operating temperature range and high-quality audio performance.
- Industrial Audio Systems: Applicable in industrial settings where reliable and high-quality audio processing is necessary.
- Professional Recording Equipment: Ideal for use in professional recording studios and live sound systems.
Q & A
- What is the resolution of the ADCs and DACs in the AD1837AASZ?
The resolution of both the ADCs and DACs is 24 bits.
- What are the supported interface modes for the AD1837AASZ?
The device supports I2S, LJ, RJ, and DSP interface modes).
- What is the maximum sample rate for the ADCs and DACs?
The maximum sample rate for the ADCs is 96 kHz, and for the DACs, it is up to 192 kHz (DAC 1 only)).
- Does the AD1837AASZ have a digital high-pass filter?
Yes, the ADC signal path includes a digital high-pass filter to remove dc offset from the analog input signal).
- What is the operating temperature range of the AD1837AASZ?
The operating temperature range is -40°C to 85°C).
- What is the package type of the AD1837AASZ?
The package type is 52-MQFP (10x10)).
- Can the AD1837AASZ be used in automotive systems?
Yes, it can be used in automotive systems due to its robust operating temperature range and high-quality audio performance).
- Does the AD1837AASZ support packed data modes?
Yes, it supports packed data modes to access all DACs and ADCs using a single TDM data pin).
- What is the dynamic range of the ADCs and DACs?
The dynamic range is typically 105 dB for ADCs and 108 dB for DACs).
- Is the AD1837AASZ compliant with EU RoHS regulations?
Yes, it is compliant with EU RoHS regulations (2011/65/EU, 2015/863)).
