GENERAL DESCRIPTION
●The AD73322 is a dual front-end processor for general-purpose applications including speech and telephony. It features two 16-bit A/D conversion channels and two 16-bit D/A conversion channels. Each channel provides 77␣ dB signal-to-noise ratio over a voiceband signal bandwidth. It also features an input-to output gain network in both the analog and digital domains. This is featured on both codecs and can be used for impedance matching or scaling when interfacing to Subscriber Line Interface Circuits (SLICs).
●FEATURES
● Two 16-Bit A/D Converters
● Two 16-Bit D/A Converters
● Programmable Input/Output Sample Rates
● 78 dB ADC SNR
● 77 dB DAC SNR
● 64 kS/s Maximum Sample Rate
● –90 dB Crosstalk
● Low Group Delay (25 μs Typ per ADC Channel, 50 μs Typ per DAC Channel)
● Programmable Input/Output Gain
● Flexible Serial Port which Allows Up to Four Dual
● Codecs to be Connected in Cascade Giving Eight
● I/O Channels
● Single (+2.7 V to +5.5 V) Supply Operation
● 73 mW Typ Power Consumption at 3.0 V
● On-Chip Reference
● 28-Lead SOIC and 44-Lead LQFP Packages
●APPLICATIONS
● General Purpose Analog I/O
● Speech Processing
● Cordless and Personal Communications
● Telephony
● Active Control of Sound and Vibration
● Data Communications
● Wireless Local Loop
