Part # AD7224 datasheet

Part Manufacturer: Analog Devices

Analog Devices

Part Description: AD7224 LC2MOS 8-Bit DAC with Output Amplifiers


Part Details:

a LC2MOS 8-Bit DAC with Output Amplifiers AD7224 FEATURES FUNCTIONAL BLOCK DIAGRAM 8-Bit CMOS DAC with Output AmplifiersOperates with Single or Dual SuppliesLow Total Unadjusted Error: Less Than 1 LSB Over Temperature Extended Temperature Range Operation P-Compatible with Double Buffered Inputs Standard 18-Pin DIPs, and 20-Terminal Surface Mount Package and SOIC Package GENERAL DESCRIPTION PRODUCT HIGHLIGHTS The AD7224 is a precision 8-bit voltage-output, digital-to- 1. DAC and Amplifier on CMOS Chip analog converter, with output amplifier and double buffered The single-chip design of the 8-bit DAC and output amplifier interface logic on a monolithic CMOS chip. No external trims is inherently more reliable than multi-chip designs. CMOS are required to achieve full specified performance for the part. fabrication means low power consumption (35 mW typicalwith single supply). The double buffered interface logic consists of two 8-bit regis-ters­an input register and a DAC register. Only the data held in 2. Low Total Unadjusted Error the DAC registers determines the analog output of the con- The fabrication of the AD7224 on Analog Devices Linear verter. The double buffering allows simultaneous update in a Compatible CMOS (LC2MOS) process coupled with a novel system containing multiple AD7224s. Both registers may be DAC switch-pair arrangement, enables an excellent total un- made transparent under control of three external lines, CS, WR adjusted error of less than 1 LSB over the full operating tem- and LDAC. With both registers transparent, the RESET line perature range. functions like a zero override; a useful function for system cali- 3. Single or Dual Supply Operation bration cycles. All logic inputs are TTL and CMOS (5 V) level The voltage-mode configuration of the AD7224 allows opera- compatible and the control logic is speed compatible with most tion from a single power supply rail. The part can also be op- 8-bit microprocessors. erated with dual supplies giving enhanced performance for Specified performance is guaranteed for input reference voltages some parameters. from +2 V to +12.5 V when using dual supplies. The part is also 4. Versatile Interface Logic specified for single supply operation using a reference of +10 V. The high speed logic allows direct interfacing to most micro- The output amplifier is capable of developing +10 V across a processors. Additionally, the double buffered interface en- 2 k load. ables simultaneous update of the AD7224 in multiple DAC The AD7224 is fabricated in an all ion-implanted high speed systems. The part also features a zero override function. Linear Compatible CMOS (LC2MOS) process which has beenspecifically developed to allow high speed digital logic circuitsand precision analog circuits to be integrated on the same chip.


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AD7224.pdf Datasheet