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AD73411 Dataheets PDF



Part Number AD73411
Manufacturers Analog Devices
Logo Analog Devices
Description Low-Power Analog Front End
Datasheet AD73411 DatasheetAD73411 Datasheet (PDF)

www.DataSheet4U.com a FEATURES Low-Power Analog Front End with DSP Microcomputer AD73411 FUNCTIONAL BLOCK DIAGRAM POWER-DOWN CONTROL DATA ADDRESS GENERATORS DAG 1 DAG 2 MEMORY 16K PM 16K DM (OPTIONAL (OPTIONAL 8K) 8K) AFE PERFORMANCE 16-Bit A/D Converter 16-Bit D/A Converter Programmable Input/Output Sample Rates 76 dB ADC SNR 77 dB DAC SNR 64 kS/s Maximum Sample Rate –90 dB Crosstalk Low Group Delay (25 ␮ s Typ per ADC Channel, 50 ␮s Typ per DAC Channel) Programmable Input/Output Gain On-Chi.

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www.DataSheet4U.com a FEATURES Low-Power Analog Front End with DSP Microcomputer AD73411 FUNCTIONAL BLOCK DIAGRAM POWER-DOWN CONTROL DATA ADDRESS GENERATORS DAG 1 DAG 2 MEMORY 16K PM 16K DM (OPTIONAL (OPTIONAL 8K) 8K) AFE PERFORMANCE 16-Bit A/D Converter 16-Bit D/A Converter Programmable Input/Output Sample Rates 76 dB ADC SNR 77 dB DAC SNR 64 kS/s Maximum Sample Rate –90 dB Crosstalk Low Group Delay (25 ␮ s Typ per ADC Channel, 50 ␮s Typ per DAC Channel) Programmable Input/Output Gain On-Chip Reference DSP PERFORMANCE 19 ns Instruction Cycle Time @ 3.3 V, 52 MIPS Sustained Performance AD73411-80 80K Bytes of On-Chip RAM, Configured as 16K Words Program Memory RAM and 16K Words Data Memory RAM AD73411-40 40K Bytes of On-Chip RAM, Configured as 8K Words Program Memory RAM and 8K Words Data Memory RAM FULL MEMORY MODE PROGRAMMABLE I/O AND FLAGS EXTERNAL ADDRESS BUS EXTERNAL DATA BUS BYTE DMA CONTROLLER OR EXTERNAL DATA BUS TIMER INTERNAL DMA PORT HOST MODE PROGRAM SEQUENCER PROGRAM MEMORY ADDRESS DATA MEMORY ADDRESS PROGRAM MEMORY DATA DATA MEMORY DATA ARITHMETIC UNITS ALU MAC SHIFTER ADSP-2100 BASE ARCHITECTURE SERIAL PORTS SPORT 0 SPORT 1 REF SERIAL PORT SPORT 2 ADC DAC ANALOG FRONT END SECTION GENERAL DESCRIPTION The AD73411 is a single device incorporating a single analog front end (AFE) and a microcomputer optimized for digital signal processing (DSP) and other high-speed numeric processing applications. The AD73411’s analog front end (AFE) section is suitable for general-purpose applications including speech and telephony. The AFE section features a 16-bit A/D converter and a 16-bit D/A converter. Each converter provides 76 dB signal-to-noise ratio over a voiceband signal bandwidth. The AD73411 is particularly suitable for a variety of applications in the speech and telephony area, including low bit rate, highquality compression, speech enhancement, recognition, and synthesis. The low group delay characteristic of the AFE makes it suitable for single or multichannel active control applications. The A/D and D/A conversion channels feature programmable input/output gains with ranges of 38 dB and 21 dB respectively. An on-chip reference voltage is included to allow single supply operation. REV. 0 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. The sampling rate of the AFE is programmable with four separate settings offering 64, 32, 16, and 8 kHz sampling rates (from a master clock of 16.384 MHz) while the serial port (SPORT2) allows easy expansion of the number of I/O channels by cascading extra AFEs external to the AD73411. The AD73411’s DSP engine combines the ADSP-2100 family base architecture (three computational units, data address generators, and a program sequencer) with two serial ports, a 16-bit internal DMA port, a byte DMA port, a programmable timer, Flag I/O, extensive interrupt capabilities, and on-chip program and data memory. The AD73411-80 integrates 80K bytes of on-chip memory configured as 16K words (24-bit) of program RAM, and 16K words (16-bit) of data RAM. The AD73411-40 integrates 40K bytes of on-chip memory configured as 8K words (24bit) of program RAM, and 8K words (16-bit) of data RAM. Power-down circuitry is also provided to meet the low power needs of battery-operated portable equipment. The AD73411 is available in a 119-ball PBGA package. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 2000 AD73411–SPECIFICATIONS1 Parameter AFE SECTION REFERENCE REFCAP Absolute Voltage, VREFCAP REFCAP TC REFOUT Typical Output Impedance Min 1.08 (AVDD = DVDD = 3.0 V to 3.6 V; DGND = AGND = 0 V, fMCLK = 16.384 MHz, fSAMP = 64 kHz; TA = TMIN to TMAX, unless otherwise noted.) Typ Max Unit Test Conditions/Comments 1.2 50 145 1.32 V ppm/°C Ω 0.1 µF Capacitor Required from REFCAP to AGND2 Absolute Voltage, VREFOUT ADC SPECIFICATIONS Maximum Input Range at VIN 2, 3 Nominal Reference Level at VIN (0 dBm0) Absolute Gain PGA = 0 dB PGA = 38 dB Gain Tracking Error Signal to (Noise + Distortion) PGA = 0 dB 1.08 1.2 1.578 –2.85 1.0954 –6.02 1.32 V V p-p dBm V p-p dBm Unloaded Measured Differentially Max Input = (1.578/1.2) × VREFCAP Measured Differentially –2.2 –0.6 –1.0 ± 0.1 76 74 72 56 60 59 –85 –85 –82 –76 –100 +1.0 dB dB dB dB dB dB dB dB dB 71 70 PGA = 38 dB Total Harmonic Distortion PGA = 0 dB PGA = 38 dB Intermodulation Distortion Idle Channel Noise Crosstalk DC Offset Power Supply Rejection Group Delay4, 5 Input Resistance at PGA 2, 4, 6 DAC SPECIFICATIONS Maximum Voltage Output Swing 2 Single-Ended Differential Nominal Voltage Output Swing (0 dBm0) .


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