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REF198GP

更新时间： 2024-11-13 22:25:35
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Precision Micropower, Low Dropout, Voltage References

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Precision Micropower, Low Dropout,  
Voltage References  
a
REF19x Series  
PIN CONFIGURATIONS  
FEATURES  
Initial Accuracy: ؎2 mV max  
Temperature Coefficient: 5 ppm/°C max  
Low Supply Current: 45 ␮A max  
Sleep Mode: 15 ␮A max  
8-Lead Narrow-Body SO and TSSOP  
(S Suffix and RU Suffix)  
NC  
1
2
3
4
TP  
8
7
6
5
Low Dropout Voltage  
REF19x  
SERIES  
Load Regulation: 4 ppm/mA  
Line Regulation: 4 ppm/V  
High Output Current: 30 mA  
Short Circuit Protection  
NC  
V
S
OUTPUT  
TP  
SLEEP  
GND  
TOP VIEW  
(Not to Scale)  
APPLICATIONS  
Portable Instrumentation  
A-to-D and D-to-A Converters  
Smart Sensors  
Solar Powered Applications  
Loop Current Powered Instrumentations  
8-Lead Epoxy DIP (P Suffix)  
NC  
1
2
TP  
8
7
6
5
REF19x  
SERIES  
NC  
V
S
TOP VIEW  
(Not to Scale)  
OUTPUT  
TP  
3
4
SLEEP  
GND  
GENERAL DESCRIPTION  
REF19x series precision bandgap voltage references use a pat-  
ented temperature drift curvature correction circuit and laser  
trimming of highly stable thin film resistors to achieve a very low  
temperature coefficient and a high initial accuracy.  
NC = NO CONNECT  
TP PINS ARE FACTORY TEST POINTS  
NO USER CONNECTION  
The REF19x series are micropower, Low Dropout Voltage  
(LDV) devices providing a stable output voltage from supplies  
as low as 100 mV above the output voltage and consuming less  
than 45 µA of supply current. In sleep mode, which is enabled  
by applying a low TTL or CMOS level to the sleep pin, the  
output is turned off and supply current is further reduced to less  
than 15 µA.  
Table I  
Part Number  
Nominal Output Voltage (V)  
REF191  
REF192  
REF193  
REF194  
REF195  
REF196  
REF198  
2.048  
2.50  
3.00  
4.50  
5.00  
3.30  
4.096  
The REF19x series references are specified over the extended  
industrial temperature range (–40°C to +85°C) with typical  
performance specifications over –40°C to +125°C for applica-  
tions such as automotive.  
All electrical grades are available in 8-Lead SOIC; the PDIP and  
TSSOP are only available in the lowest electrical grade. Prod-  
ucts are also available in die form.  
ORDERING GUIDE  
Temperature  
Range  
Package  
Description  
Package  
Option1  
Model  
Test Pins (TP)  
The test pins, Pin 1 and Pin 5, are reserved for in-package  
zener-zap. To achieve the highest level of accuracy at the out-  
put, the zener-zapping technique is used to trim the output  
voltage. Since each unit may require a different amount of ad-  
justment, the resistance value at the test pins will vary widely  
from pin-to-pin as well as from part-to-part. The user should  
not make any physical nor electrical connections to Pin 1 and  
Pin 5.  
REF19xGP  
REF19xES3  
REF19xFS3  
REF19xGS  
–40°C to +85°C 8-Lead Plastic DIP2 N-8  
–40°C to +85°C 8-Lead SOIC  
–40°C to +85°C 8-Lead SOIC  
–40°C to +85°C 8-Lead SOIC  
SO-8  
SO-8  
SO-8  
RU-8  
REF19xGRU –40°C to +85°C 8-Lead TSSOP  
REF19xGBC +25°C  
DICE  
NOTES  
1N = Plastic DIP, SO = Small Outline, RU = Thin Shrink Small Outline.  
28-Lead plastic DIP only available in “G” grade.  
3REF193 and REF196 are available in “G” grade only.  
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  
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  
Fax: 781/326-8703  
World Wide Web Site: http://www.analog.com  
© Analog Devices, Inc., 1999  
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REF198GP 替代型号

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