Datasheet AD73322 (Analog Devices)
| Hersteller | Analog Devices |
| Beschreibung | Low Cost, Low Power CMOS General-Purpose Dual Analog Front End |
| Seiten / Seite | 43 / 1 — Low Cost, Low Power CMOS. General-Purpose Dual Analog Front End. AD73322. … |
| Revision | B |
| Dateiformat / Größe | PDF / 396 Kb |
| Dokumentensprache | Englisch |
Low Cost, Low Power CMOS. General-Purpose Dual Analog Front End. AD73322. FEATURES. FUNCTIONAL BLOCK DIAGRAM
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Low Cost, Low Power CMOS General-Purpose Dual Analog Front End AD73322 FEATURES FUNCTIONAL BLOCK DIAGRAM Two 16-Bit A/D Converters AVDD1 AVDD2 DVDD Two 16-Bit D/A Converters Programmable Input/Output Sample Rates AD73322 78 dB ADC SNR VFBP1 VINP1 77 dB DAC SNR ADC CHANNEL 1 SDI VINN1 64 kS/s Maximum Sample Rate VFBN1 SDIFS –90 dB Crosstalk VOUTP1 Low Group Delay (25
s Typ per ADC Channel, DAC CHANNEL 1 SCLK VOUTN1 50
s Typ per DAC Channel) SPORT SE Programmable Input/Output Gain REFOUT REFERENCE RESET REFCAP Flexible Serial Port which Allows Up to Four Dual VFBP2 Codecs to be Connected in Cascade Giving Eight VINP2 MCLK ADC CHANNEL 2 I/O Channels VINN2 VFBN2 Single (+2.7 V to +5.5 V) Supply Operation 73 mW Typ Power Consumption at 3.0 V SDOFS VOUTP2 DAC CHANNEL 2 On-Chip Reference VOUTN2 SDO 28-Lead SOIC and 44-Lead LQFP Packages APPLICATIONS AGND1 AGND2 DGND General Purpose Analog I/O Speech Processing Cordless and Personal Communications Telephony Active Control of Sound and Vibration Data Communications Wireless Local Loop GENERAL DESCRIPTION
The A/D and D/A conversion channels feature programmable The AD73322 is a dual front-end processor for general-purpose input/output gains with ranges of 38 dB and 21 dB respectively. applications including speech and telephony. It features two An on-chip reference voltage is included to allow single-supply 16-bit A/D conversion channels and two 16-bit D/A conversion operation. This reference is programmable to accommodate channels. Each channel provides 77␣ dB signal-to-noise ratio either 3 V or 5 V operation. over a voiceband signal bandwidth. It also features an input-to- The sampling rate of the codecs is programmable with four output gain network in both the analog and digital domains. separate settings, offering 64 kHz, 32 kHz, 16 kHz and 8 kHz This is featured on both codecs and can be used for impedance sampling rates (from a master clock of 16.384 MHz). matching or scaling when interfacing to Subscriber Line Inter- face Circuits (SLICs). A serial port (SPORT) allows easy interfacing of single or cas- caded devices to industry standard DSP engines. The SPORT The AD73322 is particularly suitable for a variety of applica- transfer rate is programmable to allow interfacing to both fast tions in the speech and telephony area, including low bit rate, and slow DSP engines. high quality compression, speech enhancement, recognition, and synthesis. The low group delay characteristic of the part makes The AD73322 is available in 28-lead SOIC and 44-lead LQFP it suitable for single or multichannel active control applications. packages. REV. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
which may result from its use. No license is granted by implication or
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
otherwise under any patent or patent rights of Analog Devices.
Fax: 781/326-8703 © Analog Devices, Inc., 2000
Low Cost, Low Power CMOS General-Purpose Dual Analog Front End AD73322 FEATURES FUNCTIONAL BLOCK DIAGRAM Two 16-Bit A/D Converters AVDD1 AVDD2 DVDD Two 16-Bit D/A Converters Programmable Input/Output Sample Rates AD73322 78 dB ADC SNR VFBP1 VINP1 77 dB DAC SNR ADC CHANNEL 1 SDI VINN1 64 kS/s Maximum Sample Rate VFBN1 SDIFS –90 dB Crosstalk VOUTP1 Low Group Delay (25
s Typ per ADC Channel, DAC CHANNEL 1 SCLK VOUTN1 50
s Typ per DAC Channel) SPORT SE Programmable Input/Output Gain REFOUT REFERENCE RESET REFCAP Flexible Serial Port which Allows Up to Four Dual VFBP2 Codecs to be Connected in Cascade Giving Eight VINP2 MCLK ADC CHANNEL 2 I/O Channels VINN2 VFBN2 Single (+2.7 V to +5.5 V) Supply Operation 73 mW Typ Power Consumption at 3.0 V SDOFS VOUTP2 DAC CHANNEL 2 On-Chip Reference VOUTN2 SDO 28-Lead SOIC and 44-Lead LQFP Packages APPLICATIONS AGND1 AGND2 DGND General Purpose Analog I/O Speech Processing Cordless and Personal Communications Telephony Active Control of Sound and Vibration Data Communications Wireless Local Loop GENERAL DESCRIPTION
The A/D and D/A conversion channels feature programmable The AD73322 is a dual front-end processor for general-purpose input/output gains with ranges of 38 dB and 21 dB respectively. applications including speech and telephony. It features two An on-chip reference voltage is included to allow single-supply 16-bit A/D conversion channels and two 16-bit D/A conversion operation. This reference is programmable to accommodate channels. Each channel provides 77␣ dB signal-to-noise ratio either 3 V or 5 V operation. over a voiceband signal bandwidth. It also features an input-to- The sampling rate of the codecs is programmable with four output gain network in both the analog and digital domains. separate settings, offering 64 kHz, 32 kHz, 16 kHz and 8 kHz This is featured on both codecs and can be used for impedance sampling rates (from a master clock of 16.384 MHz). matching or scaling when interfacing to Subscriber Line Inter- face Circuits (SLICs). A serial port (SPORT) allows easy interfacing of single or cas- caded devices to industry standard DSP engines. The SPORT The AD73322 is particularly suitable for a variety of applica- transfer rate is programmable to allow interfacing to both fast tions in the speech and telephony area, including low bit rate, and slow DSP engines. high quality compression, speech enhancement, recognition, and synthesis. The low group delay characteristic of the part makes The AD73322 is available in 28-lead SOIC and 44-lead LQFP it suitable for single or multichannel active control applications. packages. REV. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
which may result from its use. No license is granted by implication or
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
otherwise under any patent or patent rights of Analog Devices.
Fax: 781/326-8703 © Analog Devices, Inc., 2000