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AD5452 Folha de dados(PDF) 1 Page - Analog Devices |
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AD5452 Folha de dados(HTML) 1 Page - Analog Devices |
1 / 20 page 8-Bit, High Speed, Multiplying D/A Converter (Universal Digital Logic Interface) DAC08 Rev. C 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 that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved. FEATURES Fast settling output current: 85 ns Full-scale current prematched to ±1 LSB Direct interface to TTL, CMOS, ECL, HTL, PMOS Nonlinearity to 0.1% maximum over temperature range High output impedance and compliance: −10 V to +18 V Complementary current outputs Wide range multiplying capability: 1 MHz bandwidth Low FS current drift: ±10 ppm/°C Wide power supply range: ±4.5 V to ±18 V Low power consumption: 33 mW @ ±5 V Low cost GENERAL DESCRIPTION The DAC08 series of 8-bit monolithic digital-to-analog convert- ers provide very high speed performance coupled with low cost and outstanding applications flexibility. Advanced circuit design achieves 85 ns settling times with very low “glitch” energy and at low power consumption. Monotonic multiplying performance is attained over a wide 20-to-1 reference current range. Matching to within 1 LSB between reference and full-scale currents eliminates the need for full- scale trimming in most applications. Direct interface to all popular logic families with full noise immunity is provided by the high swing, adjustable threshold logic input. High voltage compliance complementary current outputs are provided, increasing versatility and enabling differential operation to effectively double the peak-to-peak output swing. In many applications, the outputs can be directly converted to voltage without the need for an external op amp. All DAC08 series models guarantee full 8-bit monotonicity, and nonlineari- ties as tight as ±0.1% over the entire operating temperature range are available. Device performance is essentially unchanged over the ±4.5 V to ±18 V power supply range, with 33 mW power consumption attainable at ±5 V supplies. The compact size and low power consumption make the DAC08 attractive for portable and military/aerospace applications; devices processed to MIL-STD-883, Level B are available. DAC08 applications include 8-bit, 1 µs A/D converters, servo motor and pen drivers, waveform generators, audio encoders and attenuators, analog meter drivers, programmable power supplies, LCD display drivers, high speed modems, and other applications where low cost, high speed, and complete input/output versatility are required. FUNCTIONAL BLOCK DIAGRAM VREF (+) 14 15 V+ VLC (MSB) B1 B2 B3 B4 B5 B6 B7 (LSB) B8 13 1 5 6 7 8 9 10 11 12 V– COMP 3 16 4 2 IOUT IOUT BIAS NETWORK CURRENT SWITCHES VREF (–) REFERENCE AMPLIFIER DAC08 Figure 1. |
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