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AD1585BRT

更新时间： 2024-11-11 22:47:27
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16页 246K
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2.5 V to 5.0 V Micropower, Precision Series Mode Voltage References

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AD1585BRT 数据手册

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2.5 V to 5.0 V Micropower, Precision  
Series Mode Voltage References  
a
AD1582/AD1583/AD1584/AD1585  
FUNCTIONAL BLOCK DIAGRAM  
3-Lead SOT-23  
FEATURES  
Series Reference (2.5 V, 3 V, 4.096 V, 5 V)  
Low Quiescent Current: 70 ꢀA max  
Current Output Capability: ꢁ5 mA  
(RT Suffix)  
Wide Supply Range: VIN = VOUT + 200 mV to 12 V  
Wideband Noise (10 Hz to 10 kHz): 50 ꢀV rms  
Specified Temperature Range: –40ꢂC to +125ꢂC  
Compact, Surface-Mount SOT-23 Package  
1
2
V
OUT  
AD1582/  
AD1583/  
AD1584/  
AD1585  
3
V
IN  
TOP VIEW  
GND  
AD158x Products, Three Electrical Grades  
Electrical  
Grade  
Tempco  
(ppmꢂC)  
Initial Accuracy  
AD1582 AD1583/AD1585 AD1584  
TARGET APPLICATIONS  
1. Portable, battery-powered equipment, e.g., notebook comput-  
ers, cellular phones, pagers, PDAs, GPSs, and DMMs.  
B
C
A
0.08%  
0.16%  
0.80%  
0.10%  
0.20%  
1.00%  
0.10%  
0.20%  
0.98%  
50  
50  
100  
2. Computer workstations. Suitable for use with a wide range of  
video RAMDACs.  
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.  
3. Smart industrial transmitters  
4. PCMCIA cards  
5. Automotive  
6. Hard disk drives  
7. 3 V/5 V, 8-bit/12-bit data converters  
900  
800  
700  
600  
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.  
*
SHUNT REFERENCE  
500  
400  
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.  
300  
200  
100  
AD1582 SERIES REFERENCE  
0
2.7  
5
V
(V)  
SUPPLY  
*
3.076kꢃ SOURCE RESISTOR  
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.  
Figure 1. Supply Current (µA) vs. Supply Voltage (V)  
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, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat  
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  
Fax: 781/326-8703  
www.analog.com  
© 2004 Analog Devices, Inc. All rights reserved.  
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AD1585BRT 替代型号

型号 品牌 替代类型 描述 数据表
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