Serial-port stereo audio codec integrates stereo sigma-delta ADCs and DACs with analog and digital mixing functions. The device operates from a single 5 V supply and supports sample rates from 5.5 kHz to 48 kHz. Its serial digital interface carries 16-bit audio data plus control and status information using a TDM scheme compatible with DSP serial ports. The codec provides selectable stereo analog inputs, programmable gain and attenuation, on-chip signal filters, and low-power shutdown operation.
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| ADC resolution | 16Bits |
| DAC resolution | 16Bits |
| Sample rate range | 5.5 to 48kHz |
| Analog supply voltage | 5.0 nominalV |
| Digital supply voltage | 5.0 nominalV |
| Power supply range | 4.75 to 5.25V |
| Line input full-scale voltage | 1Vrms |
| Line input impedance | 10kΩ |
| ADC dynamic range | 70dB |
| DAC dynamic range | 76dB |
| ADC THD+N | 0.040% |
| DAC THD+N | 0.025% |
| Full-scale line output voltage | 0.707Vrms |
| Line output impedance | 600Ω |
| Operating temperature range | 0 to 70°C |
| Operating supply current | 140mA |
| Operating power dissipation | 750mW |
| Input clock frequency max | 27MHz |
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These are design resources that include the Analog Devices AD1847
Implementation guide for a digital delay demo on the ADSP-2181 EZ-Kit Lite. Describes circular buffer configuration and source code modifications for the AD1847 codec.
A guide to developing C programs for the ADSP-2181 EZ-KIT LITE, featuring a talkthru example using the AD1847 stereo codec and covering interrupt handling and assembly integration.
