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REF195FSZ

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REF195FSZ

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Part Number REF195FSZ
Manufacturer Analog Devices Inc.
Description IC VREF SERIES 5V 8SOIC
Datasheet REF195FSZ Datasheet
Package 8-SOIC (0.154", 3.90mm Width)
In Stock 52,586 piece(s)
Unit Price $ 4.2700 *
Lead Time Can Ship Immediately
Estimated Delivery Time Jul 15 - Jul 20 (Choose Expedited Shipping)
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Part Number # REF195FSZ (PMIC - Voltage Reference) is manufactured by Analog Devices Inc. and distributed by Heisener. Being one of the leading electronics distributors, we carry many kinds of electronic components from some of the world’s top class manufacturers. Their quality is guaranteed by its stringent quality control to meet all required standards.

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REF195FSZ Specifications

ManufacturerAnalog Devices Inc.
CategoryIntegrated Circuits (ICs) - PMIC - Voltage Reference
Datasheet REF195FSZDatasheet
Package8-SOIC (0.154", 3.90mm Width)
SeriesREF19
Reference TypeSeries
Output TypeFixed
Voltage - Output (Min/Fixed)5V
Voltage - Output (Max)-
Current - Output30mA
Tolerance±0.1%
Temperature Coefficient10ppm/°C
Noise - 0.1Hz to 10Hz50µVp-p
Noise - 10Hz to 10kHz-
Voltage - Input5.1 V ~ 15 V
Current - Supply45µA
Current - Cathode-
Operating Temperature-40°C ~ 85°C (TA)
Mounting TypeSurface Mount
Package / Case8-SOIC (0.154", 3.90mm Width)
Supplier Device Package8-SOIC

REF195FSZ Datasheet

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Precision Micropower, Low Dropout Voltage References Data Sheet REF19x Series Rev. L 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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©1996–2011 Analog Devices, Inc. All rights reserved. FEATURES Temperature coefficient: 5 ppm/°C maximum High output current: 30 mA Low supply current: 45 μA maximum Initial accuracy: ±2 mV maximum1 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. 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. REF19x SERIES TOP VIEW (Not to Scale) TP 1 VS 2 SLEEP 3 GND 4 NC NC OUTPUT TP 8 7 6 5 00 37 1- 00 1 NOTES 1. NC = NO CONNECT. 2. TP PINS ARE FACTORY TEST POINTS, NO USER CONNECTION. Figure 1. 8-Lead SOIC_N and TSSOP Pin Configuration (S Suffix and RU Suffix) REF19x SERIES TOP VIEW (Not to Scale) TP 1 VS 2 SLEEP 3 GND 4 NC NC OUTPUT TP 8 7 6 5 00 37 1- 00 2 NOTES 1. NC = NO CONNECT. 2. TP PINS ARE FACTORY TEST POINTS, NO USER CONNECTION. Figure 2. 8-Lead PDIP Pin Configuration (P Suffix) Table 1. Nominal Output Voltage Part Number Nominal Output Voltage (V) REF191 2.048 REF192 2.50 REF193 3.00 REF194 4.50 REF195 5.00 REF196 3.30 REF198 4.096 1 Initial accuracy does not include shift due to solder heat effect (see the Applications Information section).

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REF19x Series Data Sheet Rev. L | Page 2 of 28 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Test Pins ............................................................................................. 1 Revision History ............................................................................... 3 Specifications..................................................................................... 4 Electrical Characteristics—REF191 @ TA = 25°C.................... 4 Electrical Characteristics—REF191 @ −40°C ≤ +85°C........... 5 Electrical Characteristics—REF191 @ −40°C ≤ TA ≤ +125°C................................................................... 6 Electrical Characteristics—REF192 @ TA = 25°C.................... 6 Electrical Characteristics—REF192 @ −40°C ≤ TA ≤ +85°C ......................................................................................................... 7 Electrical Characteristics—REF192 @ −40°C ≤ TA ≤ +125°C ......................................................................................................... 7 Electrical Characteristics—REF193 @ TA = 25°C.................... 8 Electrical Characteristics—REF193 @ −40°C ≤ TA ≤ +85°C ......................................................................................................... 8 Electrical Characteristics—REF193 @ TA ≤ −40°C ≤ +125°C ......................................................................................................... 9 Electrical Characteristics—REF194 @ TA = 25°C.................... 9 Electrical Characteristics—REF194 @ −40°C ≤ TA ≤ +85°C ....................................................................................................... 10 Electrical Characteristics—REF194 @ −40°C ≤ TA ≤ +125°C ....................................................................................................... 10 Electrical Characteristics—REF195 @ TA = 25°C.................. 11 Electrical Characteristics—REF195 @ −40°C ≤ TA ≤ +85°C ....................................................................................................... 11 Electrical Characteristics—REF195 @ −40°C ≤ TA ≤ +125°C ....................................................................................................... 12 Electrical Characteristics—REF196 @ TA = 25°C.................. 12 Electrical Characteristics—REF196 @ −40°C ≤ TA ≤ +85°C ....................................................................................................... 13 Electrical Characteristics—REF196 @ −40°C ≤ TA ≤ +125°C ....................................................................................................... 13 Electrical Characteristics—REF198 @ TA = 25°C.................. 14 Electrical Characteristics—REF198 @ −40°C ≤ TA ≤ +85°C ....................................................................................................... 14 Electrical Characteristics—REF198 @ −40°C ≤ TA ≤ 125°C15 Absolute Maximum Ratings ......................................................... 16 Thermal Resistance .................................................................... 16 ESD Caution................................................................................ 16 Typical Performance Characteristics ........................................... 17 Applications Information .............................................................. 20 Output Short-Circuit Behavior ................................................ 20 Device Power Dissipation Considerations.............................. 20 Output Voltage Bypassing ......................................................... 20 Sleep Mode Operation............................................................... 20 Basic Voltage Reference Connections ..................................... 20 Membrane Switch-Controlled Power Supply............................. 20 Solder Hear Effect ...................................................................... 21 Current-Boosted References with Current Limiting............. 21 Negative Precision Reference Without Precision Resistors.. 22 Stacking Reference ICs for Arbitrary Outputs ....................... 22 Precision Current Source .......................................................... 23 Switched Output 5 V/3.3 V Reference..................................... 23 Kelvin Connections.................................................................... 24 Fail-Safe 5 V Reference.............................................................. 24 Low Power, Strain Gage Circuit ............................................... 25 Outline Dimensions ....................................................................... 26 Ordering Guide .......................................................................... 27

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Data Sheet REF19x Series Rev. L | Page 3 of 28 REVISION HISTORY 9/11—Rev. K to Rev. L Change to Condition Column for Dropout Voltage Parameter, Table 2 ................................................................................................. 4 Change to Condition Column for Dropout Voltage Parameter, Table 3 ................................................................................................. 5 Change to Operating Temperature Range, Table 23 ................... 16 7/10—Rev. J to 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 Note 1, Table 11 ............................................................. 9 Changes to Note 1, Table 14 ........................................................... 11 Changes to Note 1, Table 17 ........................................................... 12 Changes to Note 1, Table 20 ........................................................... 14 Moved Figure 22 .............................................................................. 20 Added Figure 23, Solder Heat Effect Section, and Figure 24; Renumbered Sequentially .............................................................. 21 Moved Negative Precision Reference Without Precision Resistors Section .............................................................................. 22 Moved Precision Current Source Section .................................... 23 Moved Kelvin Connections Section ............................................. 24 Moved Figure 32 .............................................................................. 25 Updated Outline Dimensions ........................................................ 26 Changes to Ordering Guide ........................................................... 27 3/08—Rev. I to Rev. J Changes to General Description ..................................................... 1 Changes to Specifications Section ................................................... 4 Deleted Wafer Test Limits Section ................................................ 14 Changes to Table 23, Thermal Resistance Section, and Table 24 ............................................................................................. 16 Changes to Figure 6 ......................................................................... 17 Changes to Device Power Dissipation Considerations Section ................................................................... 20 Changes to Current-Boosted References with Current Limiting Section .............................................................................. 21 Changes to Precision Current Source Section ............................ 22 Changes to Figure 28 ...................................................................... 23 Changes to Figure 30 ...................................................................... 24 Changes to Low Power, Strain Gage Circuit Section .................. 25 Changes to Ordering Guide ........................................................... 27 9/06—Rev. H to Rev. I Updated Format ................................................................. Universal Changes to Table 25 ........................................................................ 16 Changes to Figure 6 ........................................................................ 16 Changes to Figure 10, Figure 12, Figure 14, and Figure 26 ....... 17 Changes to Figure 18 ...................................................................... 18 Changes to Figure 20 ...................................................................... 19 Changes to Figure 23 ...................................................................... 20 Changes to Figure 25 ...................................................................... 21 Updated Outline Dimensions ........................................................ 25 Changes to Ordering Guide ........................................................... 26 6/05—Rev. G to Rev. H Updated Format ................................................................. Universal Changes to Caption in Figure 7 ..................................................... 16 Updated Outline Dimensions ........................................................ 25 Changes to Ordering Guide ........................................................... 26 7/04—Rev. F to Rev. G Changes to Ordering Guide ............................................................. 4 3/04—Rev. E to Rev. F Updated Absolute Maximum Rating .............................................. 4 Changes to Ordering Guide ........................................................... 14 Updated Outline Dimensions ........................................................ 24 1/03—Rev. D to Rev. E Changes to Figure 3 and Figure 4 ................................................. 15 Changes to Output Short Circuit Behavior ................................. 17 Changes to Figure 20 ...................................................................... 17 Changes to Figure 26 ...................................................................... 19 Updated Outline Dimensions ........................................................ 23 1/96—Revision 0: Initial Version

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REF19x Series Data Sheet Rev. L | Page 4 of 28 SPECIFICATIONS ELECTRICAL CHARACTERISTICS—REF191 @ TA = 25°C @ VS = 3.3 V, TA = 25°C, unless otherwise noted. Table 2. Parameter Symbol Condition Min Typ Max Unit INITIAL ACCURACY1 VO E Grade IOUT = 0 mA 2.046 2.048 2.050 V F Grade 2.043 2.053 V G Grade 2.038 2.058 V LINE REGULATION2 ΔVO/ΔVIN E Grade 3.0 V ≤ VS ≤ 15 V, IOUT = 0 mA 2 4 ppm/V F and G Grades 4 8 ppm/V LOAD REGULATION2 ΔVO/ΔVLOAD E Grade VS = 5.0 V, 0 mA ≤ IOUT ≤ 30 mA 4 10 ppm/mA F and G Grades 6 15 ppm/mA DROPOUT VOLTAGE VS − VO VS = 3.0 V, ILOAD = 2 mA 0.95 V VS = 3.3 V, ILOAD = 10 mA 1.25 V VS = 3.6 V, ILOAD = 30 mA 1.55 V LONG-TERM STABILITY3 DVO 1000 hours @ 125°C 1.2 mV NOISE VOLTAGE eN 0.1 Hz to 10 Hz 20 μV p-p 1 Initial accuracy does not include shift due to solder heat effect (see the Applications Information section). 2 Line and load regulation specifications include the effect of self-heating. 3 Long-term stability specification is noncumulative. The drift in subsequent 1000-hour periods is significantly lower than in the first 1000-hour period.

Page 6

Data Sheet REF19x Series Rev. L | Page 5 of 28 ELECTRICAL CHARACTERISTICS—REF191 @ −40°C ≤ +85°C @ VS = 3.3 V, −40°C ≤ TA ≤ +85°C, unless otherwise noted. Table 3. Parameter Symbol Condition Min Typ Max Unit TEMPERATURE COEFFICIENT1, 2 TCVO/°C E Grade IOUT = 0 mA 2 5 ppm/°C F Grade 5 10 ppm/°C G Grade3 10 25 ppm/°C LINE REGULATION4 ΔVO/ΔVIN E Grade 3.0 V ≤ VS ≤ 15 V, IOUT = 0 mA 5 10 ppm/V F and G Grades 10 20 ppm/V LOAD REGULATION4 ΔVO/ΔVLOAD E Grade VS = 5.0 V, 0 mA ≤ IOUT ≤ 25 mA 5 15 ppm/mA F and G Grades 10 20 ppm/mA DROPOUT VOLTAGE VS − VO VS = 3.0 V, ILOAD = 2 mA 0.95 V VS = 3.3 V, ILOAD = 10 mA 1.25 V VS = 3.6 V, ILOAD = 25 mA 1.55 V SLEEP PIN Logic High Input Voltage VH 2.4 V Logic High Input Current IH −8 μA Logic Low Input Voltage VL 0.8 V Logic Low Input Current IL −8 μA SUPPLY CURRENT No load 45 μA Sleep Mode No load 15 μA 1 For proper operation, a 1 μF capacitor is required between the output pin and the GND pin of the device. 2 TCVO is defined as the ratio of output change with temperature variation to the specified temperature range expressed in ppm/°C. TCVO = (VMAX − VMIN)/VO(TMAX − TMIN) 3 Guaranteed by characterization. 4 Line and load regulation specifications include the effect of self-heating.

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REF19x Series Data Sheet Rev. L | Page 6 of 28 ELECTRICAL CHARACTERISTICS—REF191 @ −40°C ≤ TA ≤ +125°C @ VS = 3.3 V, −40°C ≤ TA ≤ +125°C, unless otherwise noted. Table 4. Parameter Symbol Condition Min Typ Max Unit TEMPERATURE COEFFICIENT1, 2 TCVO/°C E Grade IOUT = 0 mA 2 ppm/°C F Grade 5 ppm/°C G Grade3 10 ppm/°C LINE REGULATION4 ΔVO/ΔVIN E Grade 3.0 V ≤ VS ≤ 15 V, IOUT = 0 mA 10 ppm/V F and G Grades 20 ppm/V LOAD REGULATION4 ΔVO/ΔVLOAD E Grade VS = 5.0 V, 0 mA ≤ IOUT ≤ 20 mA 10 ppm/mA F and G Grades 20 ppm/mA DROPOUT VOLTAGE VS − VO VS = 3.3 V, ILOAD = 10 mA 1.25 V VS = 3.6 V, ILOAD = 20 mA 1.55 V 1 For proper operation, a 1 μF capacitor is required between the output pin and the GND pin of the device. 2 TCVO is defined as the ratio of output change with temperature variation to the specified temperature range expressed in ppm/°C. TCVO = (VMAX − VMIN)/VO(TMAX − TMIN) 3 Guaranteed by characterization. 4 Line and load regulation specifications include the effect of self-heating. ELECTRICAL CHARACTERISTICS—REF192 @ TA = 25°C @ VS = 3.3 V, TA = 25°C, unless otherwise noted. Table 5. Parameter Symbol Condition Min Typ Max Unit INITIAL ACCURACY1 VO E Grade IOUT = 0 mA 2.498 2.500 2.502 V F Grade 2.495 2.505 V G Grade 2.490 2.510 V LINE REGULATION2 ΔVO/ΔVIN E Grade 3.0 V ≤ VS ≤ 15 V, IOUT = 0 mA 2 4 ppm/V F and G Grades 4 8 ppm/V LOAD REGULATION2 ΔVO/ΔVLOAD E Grade VS = 5.0 V, 0 mA ≤ IOUT ≤ 30 mA 4 10 ppm/mA F and G Grades 6 15 ppm/mA DROPOUT VOLTAGE VS − VO VS = 3.5 V, ILOAD = 10 mA 1.00 V VS = 3.9 V, ILOAD = 30 mA 1.40 V LONG-TERM STABILITY3 DVO 1000 hours @ 125°C 1.2 mV NOISE VOLTAGE eN 0.1 Hz to 10 Hz 25 μV p-p 1 Initial accuracy does not include shift due to solder heat effect (see the Applications Information section). 2 Line and load regulation specifications include the effect of self-heating. 3 Long-term stability specification is noncumulative. The drift in subsequent 1000-hour periods is significantly lower than in the first 1000-hour period.

Page 8

Data Sheet REF19x Series Rev. L | Page 7 of 28 ELECTRICAL CHARACTERISTICS—REF192 @ −40°C ≤ TA ≤ +85°C @ VS = 3.3 V, −40°C ≤ TA ≤ +85°C, unless otherwise noted. Table 6. Parameter Symbol Condition Min Typ Max Unit TEMPERATURE COEFFICIENT1, 2 TCVO/°C E Grade IOUT = 0 mA 2 5 ppm/°C F Grade 5 10 ppm/°C G Grade3 10 25 ppm/°C LINE REGULATION4 ΔVO/ΔVIN E Grade 3.0 V ≤ VS ≤ 15 V, IOUT = 0 mA 5 10 ppm/V F and G Grades 10 20 ppm/V LOAD REGULATION4 ΔVO/ΔVLOAD E Grade VS = 5.0 V, 0 mA ≤ IOUT ≤ 25 mA 5 15 ppm/mA F and G Grades 10 20 ppm/mA DROPOUT VOLTAGE VS − VO VS = 3.5 V, ILOAD = 10 mA 1.00 V VS = 4.0 V, ILOAD = 25 mA 1.50 V SLEEP PIN Logic High Input Voltage VH 2.4 V Logic High Input Current IH −8 μA Logic Low Input Voltage VL 0.8 V Logic Low Input Current IL −8 μA SUPPLY CURRENT No load 45 μA Sleep Mode No load 15 μA 1 For proper operation, a 1 μF capacitor is required between the output pin and the GND pin of the device. 2 TCVO is defined as the ratio of output change with temperature variation to the specified temperature range expressed in ppm/°C. TCVO = (VMAX − VMIN)/VO(TMAX − TMIN) 3 Guaranteed by characterization. 4 Line and load regulation specifications include the effect of self-heating. ELECTRICAL CHARACTERISTICS—REF192 @ −40°C ≤ TA ≤ +125°C @ VS = 3.3 V, −40°C ≤ TA ≤ +125°C, unless otherwise noted. Table 7. Parameter Symbol Condition Min Typ Max Unit TEMPERATURE COEFFICIENT1, 2 TCVO/°C E Grade IOUT = 0 mA 2 ppm/°C F Grade 5 ppm/°C G Grade3 10 ppm/°C LINE REGULATION4 ΔVO/ΔVIN E Grade 3.0 V ≤ VS ≤ 15 V, IOUT = 0 mA 10 ppm/V F and G Grades 20 ppm/V LOAD REGULATION4 ΔVO/ΔVLOAD E Grade VS = 5.0 V, 0 mA ≤ IOUT ≤ 20 mA 10 ppm/mA F and G Grades 20 ppm/mA DROPOUT VOLTAGE VS − VO VS = 3.5 V, ILOAD = 10 mA 1.00 V VS = 4.0 V, ILOAD = 20 mA 1.50 V 1 For proper operation, a 1 μF capacitor is required between the output pin and the GND pin of the device. 2 TCVO is defined as the ratio of output change with temperature variation to the specified temperature range expressed in ppm/°C. TCVO = (VMAX − VMIN)/VO(TMAX − TMIN) 3 Guaranteed by characterization. 4 Line and load regulation specifications include the effect of self-heating.

Page 9

REF19x Series Data Sheet Rev. L | Page 8 of 28 ELECTRICAL CHARACTERISTICS—REF193 @ TA = 25°C @ VS = 3.3 V, TA = 25°C, unless otherwise noted. Table 8. Parameter Symbol Condition Min Typ Max Unit INITIAL ACCURACY1 VO G Grade IOUT = 0 mA 2.990 3.0 3.010 V LINE REGULATION2 ΔVO/ΔVIN G Grade 3.3 V, ≤ VS ≤ 15 V, IOUT = 0 mA 4 8 ppm/V LOAD REGULATION2 ΔVO/ΔVLOAD G Grade VS = 5.0 V, 0 mA ≤ IOUT ≤ 30 mA 6 15 ppm/mA DROPOUT VOLTAGE VS − VO VS = 3.8 V, ILOAD = 10 mA 0.80 V VS = 4.0 V, ILOAD = 30 mA 1.00 V LONG-TERM STABILITY3 DVO 1000 hours @ 125°C 1.2 mV NOISE VOLTAGE eN 0.1 Hz to 10 Hz 30 μV p-p 1 Initial accuracy does not include shift due to solder heat effect (see the Applications Information section). 2 Line and load regulation specifications include the effect of self-heating. 3 Long-term stability specification is noncumulative. The drift in subsequent 1000-hour periods is significantly lower than in the first 1000-hour period. ELECTRICAL CHARACTERISTICS—REF193 @ −40°C ≤ TA ≤ +85°C @ VS = 3.3 V, TA = −40°C ≤ TA ≤ +85°C, unless otherwise noted. Table 9. Parameter Symbol Condition Min Typ Max Unit TEMPERATURE COEFFICIENT1, 2 TCVO/°C G Grade3 IOUT = 0 mA 10 25 ppm/°C LINE REGULATION4 ΔVO/ΔVIN G Grade 3.3 V ≤ VS ≤ 15 V, IOUT = 0 mA 10 20 ppm/V LOAD REGULATION4 ΔVO/ΔVLOAD G Grade VS = 5.0 V, 0 mA ≤ IOUT ≤ 25 mA 10 20 ppm/mA DROPOUT VOLTAGE VS − VO VS = 3.8 V, ILOAD = 10 mA 0.80 V VS = 4.1 V, ILOAD = 30 mA 1.10 V SLEEP PIN Logic High Input Voltage VH 2.4 V Logic High Input Current IH −8 μA Logic Low Input Voltage VL 0.8 V Logic Low Input Current IL −8 μA SUPPLY CURRENT No load 45 μA Sleep Mode No load 15 μA 1 For proper operation, a 1 μF capacitor is required between the output pin and the GND pin of the device. 2 TCVO is defined as the ratio of output change with temperature variation to the specified temperature range expressed in ppm/°C. TCVO = (VMAX − VMIN)/VO(TMAX − TMIN) 3 Guaranteed by characterization. 4 Line and load regulation specifications include the effect of self-heating.

Page 10

Data Sheet REF19x Series Rev. L | Page 9 of 28 ELECTRICAL CHARACTERISTICS—REF193 @ TA ≤ −40°C ≤ +125°C @ VS = 3.3 V, –40°C ≤ TA ≤ +125°C, unless otherwise noted. Table 10. Parameter Symbol Condition Min Typ Max Unit TEMPERATURE COEFFICIENT1, 2 TCVO/°C G Grade3 IOUT = 0 mA 10 ppm/°C LINE REGULATION4 ΔVO/ΔVIN G Grade 3.3 V ≤ VS ≤ 15 V, IOUT = 0 mA 20 ppm/V LOAD REGULATION4 ΔVO/ΔVLOAD G Grade VS = 5.0 V, 0 mA ≤ IOUT ≤ 20 mA 10 ppm/mA DROPOUT VOLTAGE VS − VO VS = 3.8 V, ILOAD = 10 mA 0.80 V VS = 4.1 V, ILOAD = 20 mA 1.10 V 1 For proper operation, a 1 μF capacitor is required between the output pin and the GND pin of the device. 2 TCVO is defined as the ratio of output change with temperature variation to the specified temperature range expressed in ppm/°C. TCVO = (VMAX − VMIN)/VO(TMAX − TMIN) 3 Guaranteed by characterization. 4 Line and load regulation specifications include the effect of self-heating. ELECTRICAL CHARACTERISTICS—REF194 @ TA = 25°C @ VS = 5.0 V, TA = 25°C, unless otherwise noted. Table 11. Parameter Symbol Condition Min Typ Max Unit INITIAL ACCURACY1 VO E Grade IOUT = 0 mA 4.498 4.5 4.502 V G Grade 4.490 4.510 V LINE REGULATION2 ∆VO/∆VIN E Grade 4.75 V ≤ VS ≤ 15 V, IOUT = 0 mA 2 4 ppm/V G Grade 4 8 ppm/V LOAD REGULATION2 ∆VO/∆VLOAD E Grade VS = 5.8 V, 0 mA ≤ IOUT ≤ 30 mA 2 4 ppm/mA G Grade 4 8 ppm/mA DROPOUT VOLTAGE VS − VO VS = 5.00 V, ILOAD = 10 mA 0.50 V VS = 5.8 V, ILOAD = 30 mA 1.30 V LONG-TERM STABILITY3 DVO 1000 hours @ 125°C 2 mV NOISE VOLTAGE eN 0.1 Hz to 10 Hz 45 μV p-p 1 Initial accuracy does not include shift due to solder heat effect (see the Applications Information section). 2 Line and load regulation specifications include the effect of self-heating. 3 Long-term stability specification is noncumulative. The drift in subsequent 1000-hour periods is significantly lower than in the first 1000-hour period.

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