REF195GSZ-REEL7 Analog Devices Inc, REF195GSZ-REEL7 Datasheet

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REF195GSZ-REEL7

Manufacturer Part Number
REF195GSZ-REEL7
Description
IC,VOLT REFERENCE,FIXED,5V,BICMOS,SOP,8PIN,PLASTIC
Manufacturer
Analog Devices Inc
Series
REF19r
Datasheet

Specifications of REF195GSZ-REEL7

Reference Type
Series
Voltage - Output
5V
Tolerance
±10mV
Temperature Coefficient
25ppm/°C
Voltage - Input
3 ~ 15 V
Number Of Channels
1
Current - Quiescent
45µA
Current - Output
30mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Cathode
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
FEATURES
Temperature coefficient: 5 ppm/°C maximum
High output current: 30 mA
Low supply current: 45 μA maximum
Initial accuracy: ±2 mV maximum
Sleep mode: 15 μA maximum
Low dropout voltage
Load regulation: 4 ppm/mA
Line regulation: 4 ppm/V
Short-circuit protection
APPLICATIONS
Portable instruments
ADCs and DACs
Smart sensors
Solar powered applications
Loop-current-powered instruments
GENERAL DESCRIPTION
The REF19x series precision band gap voltage references use a
patented temperature drift curvature correction circuit and
laser trimming of highly stable, thin-film resistors to achieve a
very low temperature coefficient and high initial accuracy.
The REF19x series is made up of micropower, low dropout
voltage (LDV) devices, providing 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.
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
applications, such as automotive.
All electrical grades are available in an 8-lead SOIC package; the
PDIP and TSSOP packages are available only in the lowest
electrical grade.
Rev. K
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. Specifications subject to change without notice. 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.
1
Low Dropout Voltage References
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
TEST PINS
Test Pin 1 and Test 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. Because
each unit may require a different amount of adjustment, the
resistance value at the test pins varies widely from pin to pin
and from part to part. The user should leave Pin 1 and Pin 5
unconnected.
Table 1. Nominal Output Voltage
Part Number
REF191
REF192
REF193
REF194
REF195
REF196
REF198
1
Initial accuracy does not include shift due to solder heat effect (see the
Applications Information section).
Figure 1. 8-Lead SOIC_N and TSSOP Pin Configuration
SLEEP
Figure 2. 8-Lead PDIP Pin Configuration
NOTES
1. NC = NO CONNECT.
2. TP PINS ARE FACTORY TEST
SLEEP
NOTES
1. NC = NO CONNECT.
2. TP PINS ARE FACTORY TEST
Precision Micropower,
GND
GND
POINTS, NO USER CONNECTION.
POINTS, NO USER CONNECTION.
©1996–2010 Analog Devices, Inc. All rights reserved.
TP
V
TP
V
S
S
1
2
3
4
1
2
3
4
(S Suffix and RU Suffix)
Nominal Output Voltage (V)
2.048
2.50
3.00
4.50
5.00
3.30
4.096
(Not to Scale)
(Not to Scale)
REF19x
SERIES
TOP VIEW
REF19x
SERIES
TOP VIEW
(P Suffix)
REF19x Series
8
7
6
5
8
7
6
5
NC
NC
OUTPUT
TP
NC
NC
OUTPUT
TP
www.analog.com

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REF195GSZ-REEL7 Summary of contents

Page 1

FEATURES Temperature coefficient: 5 ppm/°C maximum High output current Low supply current: 45 μA maximum 1 Initial accuracy: ±2 mV maximum Sleep mode: 15 μA maximum Low dropout voltage Load regulation: 4 ppm/mA Line regulation: 4 ppm/V Short-circuit ...

Page 2

REF19x Series TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Test Pins ............................................................................................. 1 Revision History ............................................................................... 3 Specifications ..................................................................................... 4 Electrical Characteristics—REF191 @ T Electrical Characteristics—REF191 @ −40°C ≤ +85°C ........... 5 Electrical Characteristics—REF191 ...

Page 3

REVISION HISTORY 7/10—Rev Rev. K Add Note 1, Features Section ........................................................... 1 Changes to Note 1, Table 2 ............................................................... 4 Changes to Note 1, Table 5 ............................................................... 6 Changes to Note 1, Table 8 ............................................................... 8 Changes to ...

Page 4

REF19x Series SPECIFICATIONS ELECTRICAL CHARACTERISTICS—REF191 @ 3 25°C, unless otherwise noted Table 2. Parameter Symbol 1 INITIAL ACCURACY Grade F Grade G Grade 2 LINE REGULATION ΔV /ΔV ...

Page 5

ELECTRICAL CHARACTERISTICS—REF191 @ −40°C ≤ +85° 3.3 V, −40°C ≤ T ≤ +85°C, unless otherwise noted Table 3. Parameter 1, 2 TEMPERATURE COEFFICIENT E Grade F Grade 3 G Grade 4 LINE REGULATION E Grade ...

Page 6

REF19x Series ELECTRICAL CHARACTERISTICS—REF191 @ −40°C ≤ 3.3 V, −40°C ≤ T ≤ +125°C, unless otherwise noted Table 4. Parameter 1, 2 TEMPERATURE COEFFICIENT E Grade F Grade 3 G Grade 4 LINE REGULATION ...

Page 7

ELECTRICAL CHARACTERISTICS—REF192 @ −40°C ≤ 3.3 V, −40°C ≤ T ≤ +85°C, unless otherwise noted Table 6. Parameter 1, 2 TEMPERATURE COEFFICIENT E Grade F Grade 3 G Grade 4 LINE REGULATION E Grade ...

Page 8

REF19x Series ELECTRICAL CHARACTERISTICS—REF193 @ 3 25°C, unless otherwise noted Table 8. Parameter Symbol 1 INITIAL ACCURACY V G Grade 2 LINE REGULATION ΔV G Grade 2 LOAD REGULATION ΔV G ...

Page 9

ELECTRICAL CHARACTERISTICS—REF193 @ 3.3 V, –40°C ≤ T ≤ +125°C, unless otherwise noted Table 10. Parameter 1, 2 TEMPERATURE COEFFICIENT 3 G Grade 4 LINE REGULATION G Grade 4 LOAD REGULATION G Grade DROPOUT ...

Page 10

REF19x Series ELECTRICAL CHARACTERISTICS—REF194 @ −40°C ≤ 5 −40°C ≤ T ≤ +85°C, unless otherwise noted Table 12. Parameter TEMPERATURE COEFFICIENT Grade G Grade 3 4 LINE ...

Page 11

ELECTRICAL CHARACTERISTICS—REF195 @ 5. 25°C, unless otherwise noted Table 14. Parameter 1 INITIAL ACCURACY E Grade F Grade G Grade LINE REGULATION 2 E Grade F and G Grades 2 LOAD ...

Page 12

REF19x Series ELECTRICAL CHARACTERISTICS—REF195 @ −40°C ≤ 5.20 V, −40°C ≤ T ≤ +125°C, unless otherwise noted Table 16. Parameter 1, 2 TEMPERATURE COEFFICIENT E Grade F Grade 3 G Grade 4 LINE REGULATION ...

Page 13

ELECTRICAL CHARACTERISTICS—REF196 @ −40°C ≤ 3 –40°C ≤ T ≤ +85°C, unless otherwise noted Table 18. Parameter 1, 2 TEMPERATURE COEFFICIENT 3 G Grade 4 LINE REGULATION G Grade 4 ...

Page 14

REF19x Series ELECTRICAL CHARACTERISTICS—REF198 @ 5 25°C, unless otherwise noted Table 20. Parameter Symbol 1 INITIAL ACCURACY Grade F Grade G Grade 2 LINE REGULATION ΔV /ΔV O ...

Page 15

ELECTRICAL CHARACTERISTICS—REF198 @ −40°C ≤ 5.0 V, −40°C ≤ T ≤ +125°C, unless otherwise noted Table 22. Parameter TEMPERATURE COEFFICIENT Grade F Grade 3 G Grade LINE REGULATION 4 E Grade ...

Page 16

REF19x Series ABSOLUTE MAXIMUM RATINGS Table 23. Parameter Supply Voltage Output to GND Output to GND Short-Circuit Duration Storage Temperature Range PDIP, SOIC Package Operating Temperature Range REF19x Junction Temperature Range PDIP, SOIC Package Lead Temperature (Soldering 60 sec) Stresses ...

Page 17

TYPICAL PERFORMANCE CHARACTERISTICS 5.004 3 TYPICAL PARTS 5.15V < V < 15V IN 5.003 5.002 5.001 5.000 4.999 4.998 4.997 4.996 –50 – TEMPERATURE (°C) Figure 3. REF195 Output Voltage vs. Temperature 32 5.15V ≤ V ≤ 15V ...

Page 18

REF19x Series 0 –20 –40 –60 –80 –100 –120 10 100 1k 10k FREQUENCY (Hz) Figure 9. Ripple Rejection vs. Frequency 10μF REF19x 1kΩ 15V 4 10μF REF Figure 10. Ripple Rejection vs. Frequency Measurement ...

Page 19

ON 100% 90% OFF I = 1mA L V OUT I = 10mA L 10 Figure 16. SLEEP Response Time REF19x V = 15V 1μF 4 Figure 17. SLEEP Response Time Measurement ...

Page 20

REF19x Series APPLICATIONS INFORMATION OUTPUT SHORT-CIRCUIT BEHAVIOR The REF19x family of devices is totally protected from damage due to accidental output shorts to GND accidental short-circuit condition, the reference device shuts down and limits its supply ...

Page 21

T P MAXIMUM RAMP UP RATE = 3°C/s MAXIMUM RAMP DOWN RATE = 6°C SMAX T SMIN 25 SOLDER HEAT EFFECT The mechanical stress and heat effect of soldering a part to a PCB can cause output ...

Page 22

REF19x Series management should still be exercised. A short, heavy, low dc resistance (DCR) conductor should be used from the V Sense Point S, where the collector of Q1 connects to the load, Point F. Because ...

Page 23

Although this concept is simple, some cautions are needed. Because the lower reference circuit must sink a small bias current from U2 (50 μA to 100 μA), plus the base current from the series PNP output transistor in U2, either ...

Page 24

REF19x Series Using dissimilar REF19x series devices with this configuration allows logic selection between the U1/U2-specified terminal voltages. For example, with U1 (a REF195) and U2 (a REF196), as noted in the table in Figure 30, changing the CMOS-compatible V ...

Page 25

BAT + 1.1MΩ R2 100kΩ C4 0.1µ BAT COMMON For V levels lower than the lower threshold, the output low, thus U2 and Q1 are off and U1 is ...

Page 26

REF19x Series OUTLINE DIMENSIONS 0.210 (5.33) MAX 0.150 (3.81) 0.130 (3.30) 0.115 (2.92) 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR ...

Page 27

ORDERING GUIDE 1 Model Temperature Range REF191ES −40°C to +85°C REF191ES-REEL −40°C to +85°C REF191ESZ −40°C to +85°C REF191ESZ-REEL −40°C to +85°C REF191GS −40°C to +85°C REF191GS-REEL −40°C to +85°C REF191GSZ −40°C to +85°C REF191GSZ-REEL −40°C to +85°C REF192ES −40°C ...

Page 28

... REF195GS-REEL −40°C to +85°C REF195GS-REEL7 −40°C to +85°C REF195GSZ −40°C to +85°C REF195GSZ-REEL −40°C to +85°C REF195GSZ-REEL7 −40°C to +85°C REF196GRUZ-REEL7 −40°C to +85°C REF196GSZ −40°C to +85°C REF196GSZ-REEL −40°C to +85°C REF196GSZ-REEL7 − ...

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