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AD1585BRT-R2 Arkusz danych(PDF) 1 Page - Analog Devices |
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AD1585BRT-R2 Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 16 page a AD1582/AD1583/AD1584/AD1585 REV. D 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. 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. 2.5 V to 5.0 V Micropower, Precision Series Mode Voltage References FUNCTIONAL BLOCK DIAGRAM 3-Lead SOT-23 (RT Suffix) 1 2 VOUT VIN GND 3 AD1582/ AD1583/ AD1584/ AD1585 TOP VIEW FEATURES Series Reference (2.5 V, 3 V, 4.096 V, 5 V) Low Quiescent Current: 70 A max Current Output Capability: 5 mA Wide Supply Range: VIN = VOUT + 200 mV to 12 V Wideband Noise (10 Hz to 10 kHz): 50 V rms Specified Temperature Range: –40 C to +125 C Compact, Surface-Mount SOT-23 Package TARGET APPLICATIONS 1. Portable, battery-powered equipment, e.g., notebook comput- ers, cellular phones, pagers, PDAs, GPSs, and DMMs. 2. Computer workstations. Suitable for use with a wide range of video RAMDACs. 3. Smart industrial transmitters 4. PCMCIA cards 5. Automotive 6. Hard disk drives 7. 3 V/5 V, 8-bit/12-bit data converters VSUPPLY (V) 800 700 0 2.7 5 400 300 200 100 600 500 *3.076k SOURCE RESISTOR SHUNT REFERENCE* AD1582 SERIES REFERENCE 900 Figure 1. Supply Current ( µA) vs. Supply Voltage (V) AD158x Products, Three Electrical Grades Electrical Tempco Grade Initial Accuracy (ppm C) AD1582 AD1583/AD1585 AD1584 B 0.08% 0.10% 0.10% 50 C 0.16% 0.20% 0.20% 50 A 0.80% 1.00% 0.98% 100 GENERAL DESCRIPTION The AD1582, AD1583, AD1584, and AD1585 are a family of low cost, low power, low dropout, precision band gap references. These designs are available as three-terminal (series) devices and are packaged in the compact SOT-23, 3-lead surface-mount package. The versatility of these references makes them ideal for use in battery-powered 3 V or 5 V systems where there may be wide variations in supply voltage and a need to minimize power dissipation. The superior accuracy and temperature stability of the AD1582/ AD1583/AD1584/AD1585 is made possible by the precise matching and thermal tracking of on-chip components. Patented temperature drift curvature correction design techniques minimize the nonlinearities in the voltage output temperature characteristic. These series mode devices (AD1582/AD1583/AD1584/AD1585) source or sink up to 5 mA of load current and operate efficiently with only 200 mV of required headroom supply. This family draws a maximum 70 µA of quiescent current with only a 1.0 µA/V variation with supply voltage. The advantage of these designs over conventional shunt devices is extraordinary. Valuable supply current is no longer wasted through an input series resistor, and maximum power efficiency is achieved at all input voltage levels. The AD1582, AD1583, AD1584, and AD1585 are available in three grades, A, B, and C, and are provided in a tiny footprint, the SOT-23. All grades are specified over the industrial tem- perature range of –40 °C to +125°C. |
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