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REF198FS3 Datasheet

  • REF198FS3

  • REF19x Series: Precision Micropower. Low Dropout. Low Volta...

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Precision Micropower, Low Dropout
Voltage References
REF19x Series
FEATURES
Initial Accuracy: 2 mV Max
Temperature Coefficient: 5 ppm/ C Max
Low Supply Current: 45 A Max
Sleep Mode: 15 A Max
Low Dropout Voltage
Load Regulation: 4 ppm/mA
Line Regulation: 4 ppm/V
High Output Current: 30 mA
Short Circuit Protection
APPLICATIONS
Portable Instrumentation
A-to-D and D-to-A Converters
Smart Sensors
Solar Powered Applications
Loop Current Powered Instrumentations
GENERAL DESCRIPTION
PIN CONFIGURATIONS
8-Lead Narrow-Body SOIC and TSSOP
(S Suffix and RU Suffix)
TP
V
S
SLEEP
GND
1
2
3
4
8 NC
REF19x
SERIES
TOP VIEW
(Not to Scale)
7 NC
6 OUTPUT
5 TP
NC = NO CONNECT
TP PINS ARE FACTORY TEST POINTS,
NO USER CONNECTION
8-Lead Epoxy DIP (P Suffix)
TP
V
S
1
2
3
4
8 NC
REF19x
SERIES
TOP VIEW
(Not to Scale)
7
6
5
NC
OUTPUT
TP
REF19x series precision band gap 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.
The REF19x series is made up of micropower, Low Dropout
Voltage (LDV) devices providing a stable output voltage from
supplies as low as 100 mV above the output voltage and consum-
ing less than 45
碌A(chǔ)
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
碌A(chǔ).
The REF19x series references are specified over the extended
industrial temperature range (鈥?0擄C to +85擄C) with typical
performance specifications over 鈥?0擄C to +125擄C for applications
such as automotive.
All electrical grades are available in 8-lead SOIC; the PDIP and
TSSOP are only available in the lowest electrical grade. Products
are also available in die form.
Test Pins (TP)
SLEEP
GND
NC = NO CONNECT
TP PINS ARE FACTORY TEST POINTS,
NO USER CONNECTION
Table I.
Part
Number
REF191
REF192
REF193
REF194
REF195
REF196
REF198
Nominal Output
Voltage (V)
2.048
2.50
3.00
4.50
5.00
3.30
4.096
ORDERING GUIDE
Model
REF19xGP
REF19xES
3
REF19xFS
3
REF19xGS
REF19xGRU
4
REF19xGBC
Temperature
Range
鈥?0擄C to +85擄C
鈥?0擄C to +85擄C
鈥?0擄C to +85擄C
鈥?0擄C to +85擄C
鈥?0擄C to +85擄C
25擄C
Package
Description
8-Lead Plastic DIP
2
8-Lead SOIC
8-Lead SOIC
8-Lead SOIC
8-Lead TSSOP
DICE
Package
Option
1
N-8
SOIC-8
SOIC-8
SOIC-8
RU-8
The test pins, Pin 1 and Pin 5, are reserved for in-package
Zener-zap. To achieve the highest level of accuracy at the output,
the Zener-zapping technique is used to trim the output voltage.
Since each unit may require a different amount of adjustment, 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.
REV. E
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 companies.
NOTES
1
N = Plastic DIP, SOIC = Small Outline, RU = Thin Shrink Small Outline.
2
8-lead plastic DIP is only available in 鈥淕鈥?grade.
3
REF193 and REF196 are only available in 鈥淕鈥?grade.
4
Available for REF192, REF195, and REF198 only.
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
漏 2003 Analog Devices, Inc. All rights reserved.

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