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Analog Devices Semiconductor Electronic Components Datasheet



AD1403A

Low Cost/ Precision 2.5 V IC References


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AD1403A pdf
a
FEATURES
Improved, Lower Cost, Replacements for Standard
1403, 1403A
3-Terminal Device: Voltage In/Voltage Out
Laser Trimmed to High Accuracy: 2.500 V ؎ 10 mV
(AD1403A)
Excellent Temperature Stability: 25 ppm/؇C (AD1403A)
Low Quiescent Current: 1.5 mA max
10 mA Current Output Capability
Low Cost
Convenient Mini-DIP Package
Low Cost, Precision
2.5 V IC References
AD1403/AD1403A*
FUNCTIONAL BLOCK DIAGRAM
PRODUCT DESCRIPTION
The AD1403 and AD1403A are improved three-terminal, low
cost, temperature compensated, bandgap voltage references that
provide a fixed 2.5 V output voltage for inputs between 4.5 V
and 40 V. A unique combination of advanced circuit design and
laser-wafer-trimmed thin-film resistors provides the AD1403/
AD1403A with an initial tolerance of ± 10 mV and a tempera-
ture stability of better than 25 ppm/°C. In addition, the low
quiescent current drain of 1.5 mA (max) offers a clear advan-
tage over classical Zener techniques.
The AD1403 or AD1403A is recommended as a stable refer-
ence for all 8-, 10- and 12-bit D-to-A converters that require an
external reference. In addition, the wide input range of the
AD1403/AD1403A allows operation with 5 volt logic supplies,
making these devices ideal for digital panel meter applications
and when only a single logic supply is available.
The AD1403 and AD1403A are specified for operation over the
0°C to +70°C temperature range. The AD580 series of 2.5 volt
precision IC references is recommended for applications where
operation over the –55°C to +125°C range is required.
PRODUCT HIGHLIGHTS
1. The AD1403A offers improved initial tolerance over the in-
dustry-standard 1403A: ± 10 mV versus ± 25 mV at a lower
cost.
2. The three-terminal voltage in/voltage out operation of the
AD1403/AD1403A provides a regulated output voltage with-
out any external components.
3. The AD1403/AD1403A provides a stable 2.5 V output volt-
age for input voltages between 4.5 V and 40 V making these
devices ideal for systems that contain a single logic supply.
4. Thin film resistor technology and tightly controlled bipolar
processing provide the AD1403A with temperature stabilities
of 25 ppm/°C.
5. The low 1.5 mA maximum quiescent current drain of the
AD1403 and AD1403A makes them ideal for CMOS and
other low power applications.
*Protected by U.S. Patent Numbers: 3,887,863, RE30,586.
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: 617/329-4700
Fax: 617/326-8703



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AD1403A pdf
AD1403/AD1403A–SPECIFICATIONS (VIN = 15 V, TA = +25؇C unless otherwise noted.)
Characteristic
Output Voltage
(IO = 0 mA)
AD1403
AD1403A
Temperature Coefficient of Output Voltage
AD1403
AD1403A
Output Voltage Change, 0°C to +70°C
AD1403
AD1403A
Line Regulation
(15 V VIN 40 V)
(4.5 VIN 15 V)
Load Regulation
(0 mA < IO < 10 mA)
Quiescent Current
(IO = 0 mA)
Specifications subject to change without notice.
Symbol
VO
VO/T
VO
Regin
Regload
II
Min
2.475
2.490
Typ
2.500
2.500
10
10
4.4
1.2
0.6
1.2
Max
2.525
2.510
40
25
7.0
4.5
3.0
10
1.5
Unit
V
ppm/°C
mV
mV
mV
mA
MAXIMUM RATINGS (TA = +25°C unless otherwise noted)
Rating
Symbol
Value
Input Voltage
Storage Temperature
Junction Temperature
Operating Ambient
Temperature Range
VIN
TSTG
TJ
TA
40
–25 to 100
+175
0 to +70
Unit
V
°C
°C
°C
ORDERING GUIDE
Model
AD1403
AD1403A
*N Plastic DIP.
Initial
Tolerance
± 25 mV
± 10 mV
Package
Option*
N-8
N-8
Figure 1. AD1403/AD1403A Connection Diagram
Figure 2. Simplified AD1403 Schematic
–2– REV. A



Part Number AD1403A
Description Low Cost/ Precision 2.5 V IC References
Maker Analog Devices - Analog Devices
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