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DAC7642VFB Datasheet(PDF) 1 Page - Texas Instruments |
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DAC7642VFB Datasheet(HTML) 1 Page - Texas Instruments |
1 / 25 page 16-Bit, Dual Voltage Output DIGITAL-TO-ANALOG CONVERTER DESCRIPTION The DAC7642 and DAC7643 are dual channel, 16-bit, volt- age output Digital-to-Analog Converters (DACs) which pro- vide 15-bit monotonic performance over the specified tem- perature range. They accept 16-bit parallel input data, have double-buffered DAC input logic (allowing simultaneous up- date of all DACs), and provide a readback mode of the internal input registers. Programmable asynchronous reset clears all registers to a mid-scale code of 8000H (DAC7642) or to a zero-scale code of 0000H (DAC7643). These DACs can operate from a single +5V supply or from +5V and –5V supplies, providing an output range of 0 to +2.5V or –2.5V to +2.5V, respectively. Low power and small size per DAC make the DAC7642 and DAC7643 ideal for automatic test equipment, DAC-per-pin programmers, data acquisition systems, and closed-loop servo-control. The DAC7642 and DAC7643 are available in a LQFP-32 package and specified over a –40 °C to +85°C temperature range. FEATURES q LOW POWER: 4mW q UNIPOLAR OR BIPOLAR OPERATION q SETTLING TIME: 10 µs to 0.003% FSR q 15-BIT LINEARITY AND MONOTONICITY: –40 °C to +85°C q RESET TO MID-SCALE (DAC7642) OR ZERO-SCALE (DAC7643) q DATA READBACK q DOUBLE-BUFFERED DATA INPUTS APPLICATIONS q PROCESS CONTROL q CLOSED-LOOP SERVO-CONTROL q MOTOR CONTROL q DATA ACQUISITION SYSTEMS q DAC-PER-PIN PROGRAMMERS DAC7642 DAC7643 SBAS233 – DECEMBER 2001 www.ti.com PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2001, Texas Instruments Incorporated Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. DAC A DAC Register A Input Register A I/O Buffer Control Logic DAC B DAC Register B Input Register B VREFL VREFH VREFH Sense VREFL Sense VOUTB VOUTA VOUTB Sense RST LOADDACS DACSEL CS R/W DATA I/O 16 GND VOUTA Sense VSS VCC DAC7642 DAC7643 DAC7642 DAC7643 |
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