Analog Devices AD1847
The AD1847 can accept and generate 16-bit twos-complement PCM linear digital data, 8-bit unsigned magnitude PCM linear data, and 8-bit µ-law or A-law companded digital data. The AD1847 is intended to provide a complete, low cost, single-chip solution for business, game audio and multimedia applications requiring operation from a single +5 V supply. It provides a serial interface for implementation on a computer motherboard, add-in or PCMCIA card.
| Part No. |
AD1847 |
| Datasheet |
AD1847
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| Manufacturer |
 Analog Devices |
| Description |
Serial-Port 16-Bit SoundPort Stereo Codec |
| Buy |
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FEATURES
Single-Chip Integrated ⌺⌬ Digital Audio Stereo Codec Supports the Microsoft Windows Sound System* Multiple Channels of Stereo Input Analog and Digital Signal Mixing Programmable Gain and Attenuation On-Chip Signal Filters Digital Interpolation and Decimation Analog Output Low-Pass Sample Rates from 5.5 kHz to 48 kHz 44-Lead PLCC and TQFP Packages Operation from +5 V Supplies Serial Digital Interface Compatible with ADSP-21xx Fixed-Point DSP I S A B U S Serial-Port 16-Bit SoundPort Stereo Codec AD1847 ASIC AD1847 DSP Figure 1. Example System Diagram External circuit requirements are limited to a minimal number of low cost support components. Anti-imaging DAC output filters are incorporated on-chip. Dynamic range exceeds 70 dB over the 20 kHz audio band. Sample rates from 5.5 kHz to 48 kHz are supported from external crystals. The Codec includes a stereo pair of ∑∆ analog-to-digital converters (ADCs) and a stereo pair of ∑∆ digital-to-analog converters (DACs). Inputs to the ADC can be selected from four stereo pairs of analog signals: line 1, line 2, auxiliary (“aux”) line #1, and post-mixed DAC output.
