a
FEATURES
Series Reference (2.5 V, 3 V, 4.096 V, 5 V)
Initial Accuracy: 0.1% max
Temperature Drift: 50 ppm/ C max
Low Quiescent Current: 65 A max
Current Output Capability: 5 mA
Wide Supply Range: V
IN
= V
OUT
+ 200 mV to 12 V
Wideband Noise (10 Hz鈥?0 kHz): 50 V rms
Operating Temperature Range: 鈥?0 C to +85 C
Compact, Surface-Mount, SOT-23 Package
2.5 V to 5.0 V Micropower, Precision
Series Mode Voltage References
AD1582/AD1583/AD1584/AD1585
FUNCTIONAL BLOCK DIAGRAM
V
OUT
1
3 V
IN
GND 2
AD1582/3/4/5
TOP VIEW
GENERAL DESCRIPTION
TARGET APPLICATIONS
The AD1582, AD1583, AD1584 and AD1585 are a family of
low cost, low power, low dropout, precision bandgap references.
These designs are available as three-terminal (series) devices and
are packaged in the compact SOT-23, 3-pin, 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 have
been used to minimize the nonlinearities in the voltage output
temperature characteristic.
These series mode devices (AD1582/AD1583/AD1584/AD1585)
will source or sink up to 5 mA of load current and operate
efficiently with only 200 mV of required headroom. This family
will draw a maximum 65
碌A(chǔ)
of quiescent current with only a
1.0
碌A(chǔ)/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
two grades, A and B, both of which are provided in the smallest
available package on the market, the SOT-23. Both grades are
specified over the industrial temperature range of 鈥?0擄C to
+85擄C.
1. Portable, Battery Powered Equipment. 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鈥?2-Bit Data Converters.
900
800
700
600
I
SUPPLY
鈥?A
SHUNT REFERENCE*
500
400
300
200
100
0
2.7
AD1582 SERIES REFERENCE
V
SUPPLY
鈥?V
*3.076k
5
SOURCE RESISTOR
Figure 1. Supply Current (
碌
A) vs. Supply Voltage (V)
REV. A
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
漏 Analog Devices, Inc., 2000
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