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Flash Programmable 12-Bit Integrated Data-Acquisition Systems

Product Details

Key Features

Simplified Block Diagram

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Key Features

  • 12-Bit 53ksps ADC with Fully Differential Inputs
  • Dual 8-Bit PWM DAC Outputs
  • Three Timers
  • 4-Clock Cycle 8051-Compatible Instruction Set with Dual Data Pointers
  • Programmable Watchdog Supervisor
  • Four Parallel I/O Ports
  • Dual Serial I/O Ports (up to 375kb)
  • +3V or +5V Single-Supply Operation
  • DC to 12MHz Clock Speed
  • 64-Pin TQFP Package

Applications/Uses

  • Data Logging
  • Handheld Instruments (PDAs, Palmtops)
  • Multi-Channel Data-Acquisition with Data Formatting
  • Portable Data-Acquisition Systems
  • Smart Transmitters
  • Temperature Control

Description

The MAX7651/MAX7652 are complete 12-bit data-acquisition systems featuring an algorithmic, switched-capacitor, analog-to-digital converter (ADC), a pulse- width-modulated digital-to-analog converter (DAC), three timer/counters, and an industry-standard 8051 microprocessor core with a variety of I/O peripherals. Power-down capability and full functionality with supply voltages as low as +3V make the MAX7651/MAX7652 suitable for portable and power-sensitive applications.

The MAX7651/MAX7652 perform fully differential voltage measurements with 12-bit resolution, programmable gain, and separate track-and-hold for both positive and negative inputs. The converter accepts versatile input modes consisting of four 2-channel signal pairs or eight 1-channel signals relative to a floating common.

The MAX7651/MAX7652 microprocessor systems feature a CPU, 256 bytes of RAM, two 8kB flash memory, four 8-bit I/O ports, two UARTs, an interrupt controller, and a watchdog timer. Only four clock cycles are required to complete each microprocessor instruction.

The MAX7651/MAX7652 are available in 64-pin TQFP packages.

Simplified Block Diagram

MAX7651, MAX7652: Functional Diagram MAX7651, MAX7652: Functional Diagram Zoom icon

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .