Datasheet REF198x (Analog Devices)

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Precision Micropower, Low Dropout Voltage References Data Sheet REF19x Series FEATURES TEST PINS Temperature coefficient: 5 ppm/°C maximum
Test Pin 1 and Test Pin 5 are reserved for in-package Zener zap.
High output current: 30 mA
To achieve the highest level of accuracy at the output, the Zener
Low supply current: 45 μA maximum
zapping technique is used to trim the output voltage. Because
Initial accuracy: ±2 mV maximum1
each unit may require a different amount of adjustment, the
Sleep mode: 15 μA maximum
resistance value at the test pins varies widely from pin to pin
Low dropout voltage
and from part to part. The user should leave Pin 1 and Pin 5
Load regulation: 4 ppm/mA
unconnected.
Line regulation: 4 ppm/V TP 8 NC Short-circuit protection 1 REF19x V 7 NC S 2 SERIES SLEEP 3 TOP VIEW 6 OUTPUT APPLICATIONS GND 4 (Not to Scale) 5 TP Portable instruments NOTES ADCs and DACs 1. NC = NO CONNECT. 2. TP PINS ARE FACTORY TEST Smart sensors POINTS, NO USER CONNECTION.
00371-001
Solar powered applications
Figure 1. 8-Lead SOIC_N and TSSOP Pin Configuration
Loop-current-powered instruments
(S Suffix and RU Suffix)
TP 1 8 NC REF19x GENERAL DESCRIPTION VS 2 SERIES 7 NC SLEEP 3 6 OUTPUT
The REF19x series precision band gap voltage references use a
TOP VIEW GND 4 (Not to Scale) 5 TP
patented temperature drift curvature correction circuit and laser trimming of highly stable, thin-film resistors to achieve a
NOTES 1. NC = NO CONNECT.
very low temperature coefficient and high initial accuracy.
2. TP PINS ARE FACTORY TEST POINTS, NO USER CONNECTION.
00371-002 The REF19x series is made up of micropower, low dropout Figure 2. 8-Lead PDIP Pin Configuration voltage (LDV) devices, providing stable output voltage from (P Suffix) supplies as low as 100 mV above the output voltage and
Table 1. Nominal Output Voltage
consuming less than 45 μA of supply current. In sleep mode,
Part Number Nominal Output Voltage (V)
which is enabled by applying a low TTL or CMOS level to the SLEEP REF191 2.048 pin, the output is turned off and supply current is REF192 2.50 further reduced to less than 15 μA. REF193 3.00 The REF19x series references are specified over the extended REF194 4.50 industrial temperature range (−40°C to +85°C) with typical REF195 5.00 performance specifications over −40°C to +125°C for REF196 3.30 applications, such as automotive. REF198 4.096 All electrical grades are available in an 8-lead SOIC package; the PDIP and TSSOP packages are available only in the lowest electrical grade. 1 Initial accuracy does not include shift due to solder heat effect (see the Applications Information section).
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Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TEST PINS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ELECTRICAL CHARACTERISTICS—REF191 @ TA = 25°C ELECTRICAL CHARACTERISTICS—REF191 @ −40°C ≤ +85°C ELECTRICAL CHARACTERISTICS—REF191 @ −40°C ≤ TA ≤ +125°C ELECTRICAL CHARACTERISTICS—REF192 @ TA = 25°C ELECTRICAL CHARACTERISTICS—REF192 @ −40°C ≤ TA ≤ +85°C ELECTRICAL CHARACTERISTICS—REF192 @ −40°C ≤ TA ≤ +125°C ELECTRICAL CHARACTERISTICS—REF193 @ TA = 25°C ELECTRICAL CHARACTERISTICS—REF193 @ −40°C ≤ TA ≤ +85°C ELECTRICAL CHARACTERISTICS—REF193 @ TA ≤ −40°C ≤ +125°C ELECTRICAL CHARACTERISTICS—REF194 @ TA = 25°C ELECTRICAL CHARACTERISTICS—REF194 @ −40°C ≤ TA ≤ +85°C ELECTRICAL CHARACTERISTICS—REF194 @ −40°C ≤ TA ≤ +125°C ELECTRICAL CHARACTERISTICS—REF195 @ TA = 25°C ELECTRICAL CHARACTERISTICS—REF195 @ −40°C ≤ TA ≤ +85°C ELECTRICAL CHARACTERISTICS—REF195 @ −40°C ≤ TA ≤ +125°C ELECTRICAL CHARACTERISTICS—REF196 @ TA = 25°C ELECTRICAL CHARACTERISTICS—REF196 @ −40°C ≤ TA ≤ +85°C ELECTRICAL CHARACTERISTICS—REF196 @ −40°C ≤ TA ≤ +125°C ELECTRICAL CHARACTERISTICS—REF198 @ TA = 25°C ELECTRICAL CHARACTERISTICS—REF198 @ −40°C ≤ TA ≤ +85°C ELECTRICAL CHARACTERISTICS—REF198 @ −40°C ≤ TA ≤ 125°C ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION TYPICAL PERFORMANCE CHARACTERISTICS APPLICATIONS INFORMATION OUTPUT SHORT-CIRCUIT BEHAVIOR DEVICE POWER DISSIPATION CONSIDERATIONS OUTPUT VOLTAGE BYPASSING SLEEP MODE OPERATION BASIC VOLTAGE REFERENCE CONNECTIONS MEMBRANE SWITCH-CONTROLLED POWER SUPPLY SOLDER HEAT EFFECT CURRENT-BOOSTED REFERENCES WITH CURRENT LIMITING NEGATIVE PRECISION REFERENCE WITHOUT PRECISION RESISTORS STACKING REFERENCE ICs FOR ARBITRARY OUTPUTS PRECISION CURRENT SOURCE SWITCHED OUTPUT 5 V/3.3 V REFERENCE KELVIN CONNECTIONS FAIL-SAFE 5 V REFERENCE LOW POWER, STRAIN GAGE CIRCUIT OUTLINE DIMENSIONS ORDERING GUIDE