Complete Dual 12-Bit DAC
No External Components
Single +5 Volt Operation
1 mV/Bit with 4.095 V Full Scale
True Voltage Output, ±5 mA Drive
Very Low Power: 5 mW
Digitally Controlled Calibration
Portable Equipment
Servo Controls
Process Control Equipment
PC Peripherals
AD8582AR产品描述
The AD8582 is a complete, parallel input, dual 12-bit, voltage output DAC designed to operate from a single +5 volt supply.Built using a CBCMOS process, this monolithic DAC offers the user low cost, and ease-of-use in +5 volt only systems.Included on the chip, in addition to the DACs, are a rail-to-rail amplifier, latch and reference. The reference (VREF) is trimmed to 2.5 volts output, and the on-chip amplifier gains up the DAC output to 4.095 volts full scale. The user needs only supply a +5 volt supply.
The AD8582 is coded natural binary. The op amp output swings from 0 volt to +4.095 volts for a one-millivolt-per-bit resolution, and is capable of driving ±5 mA. Operation down to 4.3 V is possible with output load currents less than 1 mA.
The high speed parallel data interface connects to the fastest processors without wait states. The double-buffered input struc-ture allows the user to load the input registers one at a time,then a single load strobe tied to both LDA + LDB inputs will update both DAC outputs simultaneously. LDA and LDB can also be activated independently to immediately update their re-spective DAC registers. An address input decodes DAC A or DAC B when the chip select CS input is strobed. An asynchro-nous reset input sets the output to zero scale. The MSB bit can be used to establish a preset to midscale when the reset input is strobed.
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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 AD8582 is available in the 24-pin plastic DIP and the sur-face mount SOIC-24. Each part is fully specified for operation over –40°C to +85°C, and the full +5 V ± 5% power supply range.
AD8582AR最大额定值
VDD to DGND & AGND . . . . . . . . . . . . . . . . . –0.3 V, +7 V
Logic Inputs to DGND . . . . . . . . . . . . .–0.3 V, VDD + 0.3 V
VOUT to AGND . . . . . . . . . . . . . . . . . . .–0.3 V, VDD + 0.3 V
VREF to AGND . . . . . . . . . . . . . . . . . . .–0.3 V, VDD + 0.3 V
AGND to DGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, VDD
IOUT Short Circuit to GND . . . . . . . . . . . . . . . . . . . 50 mA
Package Power Dissipation . . . . . . . . . . . . (TJ max–TA)/èJA
Thermal Resistance, èJA
24-Pin Plastic DIP Package (N-24) . . . . . . . . . . 62°C/W
24-Lead SOIC Package (SOL-24) . . . . . . . . . . . . 73°C/W
Maximum Junction Temperature (TJ max) . . . . . . . . 150°C
Operating Temperature Range . . . . . . . . . . –40°C to +85°C
Storage Temperature Range . . . . . . . .. . . –65°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . .. . +300°C
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