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DAC8420FQ Datasheet(PDF) 1 Page - Analog Devices |
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DAC8420FQ Datasheet(HTML) 1 Page - Analog Devices |
1 / 16 page FUNCTIONAL BLOCK DIAGRAM REG A SHIFT REGISTER DECODE VOUTA VOUTB VOUTC VOUTD 2 3 6 7 8 15 16 9 GND CLSEL 4 VREFLO VSS 5 VREFHI VDD 10 12 11 13 14 SDI CLK NC CS LD REG A 1 DAC A REG B DAC B REG C DAC C REG D DAC D CLR 12 4 2 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. a Quad 12-Bit Serial Voltage Output DAC DAC8420 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 FEATURES Guaranteed Monotonic Over Temperature Excellent Matching Between DACs Unipolar or Bipolar Operation Buffered Voltage Outputs High Speed Serial Digital Interface Reset to Zero- or Center-Scale Wide Supply Range, +5 V-Only to 15 V Low Power Consumption (35 mW max) Available in 16-Pin DIP and SOL Packages APPLICATIONS Software Controlled Calibration Servo Controls Process Control and Automation ATE The DAC8420 is available in 16-pin epoxy DIP, cerdip, and wide-body SOL (small-outline surface mount) packages. Opera- tion is specified with supplies ranging from +5 V-only to ±15 V, with references of +2.5 V to ±10 V respectively. Power dissipa- tion when operating from ±15 V supplies is less than 255 mW (max), and only 35 mW (max) with a +5 V supply. For applications requiring product meeting MIL-STD-883, contact your local sales office for the DAC8420/883 data sheet, which specifies operation over the –55 °C to +125°C tempera- ture range. GENERAL DESCRIPTION The DAC8420 is a quad, 12-bit voltage-output DAC with serial digital interface, in a 16-pin package. Utilizing BiCMOS tech- nology, this monolithic device features unusually high circuit density and low power consumption. The simple, easy-to-use serial digital input and fully buffered analog voltage outputs require no external components to achieve specified performance. The three-wire serial digital input is easily interfaced to micro- processors running at 10 MHz rates, with minimal additional circuitry. Each DAC is addressed individually by a 16-bit serial word consisting of a 12-bit data word and an address header. The user-programmable reset control CLR forces all four DAC outputs to either zero or midscale, asynchronously overriding the current DAC register values. The output voltage range, de- termined by the inputs VREFHI and VREFLO, is set by the user for positive or negative unipolar or bipolar signal swings within the supplies allowing considerable design flexibility. |
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