+2.5 V Low Power Precision
Voltage Reference
REF43
FEATURES
PIN CONFIGURATION
GENERAL DESCRIPTION
The REF43 is a low power precision reference providing a
stable 2.5 V output independent of variations in supply voltage,
load conditions or ambient temperature. It is suitable as a
reference level for 8-, 10- and 12-bit data acquisition systems,
or wherever a stable, known voltage is required.
Tight output tolerances and low thermal drift are assured by
zener-zap trimming of both output voltage and its temperature
coefficient. A unique curvature correction circuit reduces the
thermal curvature which is characteristic of many previous
bandgap references.
ORDERING GUIDE
Model
REF43FZ
REF43GZ
REF43GP
REF43GS
REF43GS-REEL
REF43GS-REEL7
REF43GSZ*
REF43GSZ-REEL7*
REF43NBC
*Z
= Pb-free part.
Initial
Accuracy
0.06%
0.10%
0.10%
0.10%
0.10%
0.10%
0.10%
0.10%
0.20%
Temperature
Coefficient
10ppm/∞C
25ppm/∞C
25ppm/∞C
25ppm/∞C
25ppm/∞C
25ppm/∞C
25ppm/∞C
25ppm/∞C
Package
Description
8-Pin Hermetic DIP
8-Pin Hermetic DIP
8-Pin Plastic DIP
8-Pin SOIC
8-Pin SOIC
8-Pin SOIC
8-Pin SOIC
8-Pin SOIC
Die
Package
Option
Q-8
Q-8
N-8
R-8
R-8
R-8
R-8
R-8
Number of
Part per
Reel/Tray
48
48
50
98
2,500
1,000
98
1,000
221
Temperature
Range
–40∞C to +85∞C
–40∞C to +85∞C
–40∞C to +85∞C
–40∞C to +85∞C
–40∞C to +85∞C
–40∞C to +85∞C
–40∞C to +85∞C
–40∞C to +85∞C
SIMPLIFIED SCHEMATIC
V
IN
V
OUT
TRIM
TEMP
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.
GROUND
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.
REF43
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although the
REF43 features proprietary ESD protection circuitry, permanent damage may occur on devices
subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended
to avoid performance degradation or loss of functionality.
–2–
REV. D
REF43
DICE CHARACTERISTICS
2.
3.
4A.
4B.
5.
6A.
6B.
VIN
TEMPERATURE OUT
GROUND*
GROUND*
TRIM
VOUT FO2. VIN
VOUT SENSE‡
*PADS
4A AND 4B MUST BOTH BE BONDED TO GROUND.
‡VOUT FORCE AND SENSE ARE TYPICALLY BONDED
TOGETHER AT THE LOAD.
DIE SIZE 0.085 0.062 inch, 5270 sq. mils
(2.16 1.57 mm, 3.39 sq. mm)
–4–
REV. D
Microcontroller MCU
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