AD73311AR

低成本，低功耗CMOS通用模拟前端 Low Cost, Low Power CMOS General Purpose Analog Front End

Product Details

Linux Driver

The AD73311 and AD73311L are complete front-end processors for general-purpose applications including speech and telephony. They feature a 16-bit A/D conversion channel and a 16-bit D/A conversion channel. Each channel provides 70 dB signal-to-noise ratio over the voiceband signal bandwidth. The AD73311L is a follow-on to the AD73311 with improved on-chip filtering, more sample-rate options and lower cost. The L version operates from 3.0 V only, where as the AD73311 operates from either 3 V or 5 V power supplies.

The gains of the A/D and D/A conversion channels are programmable over 38 dB and 21 dB respectively. An on-chip reference voltage is included to allow single-supply operations. A serial port SPORT allows easy interfacing for single or cascaded devices to industry standard DSP engines.

The AD73311 and AD73311L are suitable for a variety of applications in the speech and telephony areas including low-bit rate, high quality compression, speech enhancement, recognition and synthesis. The low group delay characteristic of the part makes it suitable for single or multi-channel active-control applications.

### Features and Benefits

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16-Bit A/D Converters

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16-Bit D/A Converters

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Programmable Input/Output Sample Rates

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75 dB ADC SNR

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70 db DAC SNR

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64 ksps Maximum Sample Rate

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-90 db Crosstalk

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Programmable Input/Output Gain

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Low group Delay: 

25 µs per ADC ch

50 µs per DAC ch

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Flexible Serial Port Allows Up to 4 Codecs To Be Connected in Cascade Giving 8 I/O Channels

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Single 2.7 V to 5.5 V Supply Operation

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50 mW Max Power Dissipation at 2.7 V

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Linux Driver