AD73460 Datasheet | Analog Devices

FEATURES AFE PERFORMANCE Six 16-Bit A/D Converters Programmable Input Sample Rate Simultaneous Sampling 72 d B SNR 64 k S/s Maximum Sample Rate - 80 d B Crosstalk Low Group Delay (25 ␮s Typ per ADC Channel) Programmable Input Gain Single Supply Operation On-Chip Reference DSP PERFORMANCE 19 ns Instruction Cycle Time @ 3.3 V, 52 MIPS Sustained Performance Single-Cycle Instruction Execution Single-Cycle Context Switch 3-Bus Architecture Allows Dual Operand Fetches in Every Instruction Cycle Multifunction Instructions Power-Down Mode Featuring Low CMOS Standby Power Dissipation with 400 Cycle Recovery from Power-Down Condition Low Power Dissipation in Idle Mode DATA ADDRESS GENERATORS DAG 1 DAG 2 PROGRAM SEQUENCER Six-Input Channel Analog Front End AD73460 FUNCTIONAL BLOCK DIAGRAM POWER-DOWN CONTROL MEMORY 16K PM 16K DM (OPTIONAL (OPTIONAL 8K) 8K) PROGRAMMABLE I/O AND FLAGS FULL MEMORY MODE EXTERNAL ADDRESS BUS EXTERNAL DATA BUS BYTE DMA CONTROLLER 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 TIMER SERIAL PORT SPORT 2 ADC1 ADC2 ADC3 ADC4 ADC5 ADC6 ANALOG FRONT END SECTION GENERAL DESCRIPTION The AD73460 is a six-input channel analog front-end processor for general-purpose applications including industrial power metering or multichannel analog inputs. It features six 16-bit A/D conversion channels, each of which provides 72 d B signal-to-noise ratio over a dc-to-2 k Hz signal bandwidth. Each channel also features a programmable input gain amplifier (PGA) with gain settings in eight stages from 0 d B to 38 d B. The AD73460 is particularly suitable for industrial power metering as each channel samples synchronously, ensuring that there is no (phase) delay between the conversions. The AD73460 also features low group delay conversions on all channels. An on-chip reference voltage of 1.25 V is included. The sampling rate of the...