REF193 ,Precision Micropower, Low Dropout, Low Voltage References, Nom. Vo=3.0FEATURES PIN CONFIGURATIONSInitial Accuracy: 2 mV Max 8-Lead Narrow-Body SOIC and TSSOPTemperature ..
REF193GS ,Precision Micropower, Low Dropout, Voltage ReferencesCHARACTERISTICSParameter Symbol Condition Min Typ Max Units1INITIAL ACCURACY“E” Grade V I = 0 mA 2. ..
REF194 ,Precision Micropower, Low Dropout, Low Voltage References, Nom. Vo=4.50CHARACTERISTICSS AParameter Symbol Condition Min Typ Max Unit1, 2TEMPERATURE COEFFICIENTE” Grade TC ..
REF194FS ,Precision Micropower, Low Dropout, Voltage ReferencesFEATURESInitial Accuracy: 62 mV max8-Lead Narrow-Body SO and TSSOPTemperature Coefficient: 5 ppm/
REF191-REF192-REF193-REF194-REF195-REF196-REF198
Precision Micropower, Low Dropout, Low Voltage References, Nom. Vo=2.048
REV.E
Precision Micropower, Low Dropout
Voltage References
PIN CONFIGURATIONS
8-Lead Narrow-Body SOIC and TSSOP
(S Suffix and RU Suffix)
8-Lead Epoxy DIP (P Suffix)
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 DESCRIPTIONREF19x 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 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 15µA.
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 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)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 pintopin as
well as from parttopart. The user should not make any physical
nor electrical connections to Pin1 and Pin5.
Table I.
ORDERING GUIDEREF19xES
REF19xFS
REF19xGS
REF19xGRU
NOTESN = Plastic DIP, SOIC = Small Outline, RU = Thin Shrink Small Outline.8-lead plastic DIP is only available in “G” grade.REF193 and REF196 are only available in “G” grade.Available for REF192, REF195, and REF198 only.
REF191–SPECIFICATIONS
REF19x Series
ELECTRICAL CHARACTERISTICSLINE REGULATION
LOAD REGULATION
DROPOUT VOLTAGE
NOTESInitial accuracy includes temperature hysteresis effect.Line and load regulation specifications include the effect of self-heating.Long-term drift is guaranteed by 1000 hours life test performed on three independent wafer lots at 125°C, with an LTPD of 1.3.
Specifications subject to change without notice.
ELECTRICAL CHARACTERISTICSLINE REGULATION
LOAD REGULATION
DROPOUT VOLTAGE
SLEEP PIN
SUPPLY CURRENT
NOTESFor proper operation, a 1 µF capacitor is required between the output pin and the GND pin of the device.TCVO is defined as the ratio of output change with temperature variation to the specified temperature range expressed in ppm/°C.
(@ VS = 3.3 V, TA = 25�C, unless otherwise noted.)
(@ VS = 3.3 V, –40�C ≤ TA ≤ +85�C, unless otherwise noted.)
REF19x Series
REF191–SPECIFICATIONS
ELECTRICAL CHARACTERISTICSLINE REGULATION
LOAD REGULATION
DROPOUT VOLTAGE
NOTESFor proper operation, a 1 µF capacitor is required between the output pin and the GND pin of the device.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).Guaranteed by characterization.Line and load regulation specifications include the effect of self-heating.
Specifications subject to change without notice.
(@ VS = 3.3 V, –40�C ≤ TA ≤ +125�C, unless otherwise noted.)
REF19x Series
REF192–SPECIFICATIONS
ELECTRICAL CHARACTERISTICSLINE REGULATION
LOAD REGULATION
DROPOUT VOLTAGE
NOTESInitial accuracy includes temperature hysteresis effect.Line and load regulation specifications include the effect of self-heating.Long-term drift is guaranteed by 1000 hours life test performed on three independent wafer lots at 125°C, with an LTPD of 1.3.
Specifications subject to change without notice.
ELECTRICAL CHARACTERISTICSLINE REGULATION
LOAD REGULATION
DROPOUT VOLTAGE
SLEEP PIN
SUPPLY CURRENT
NOTESFor proper operation, a 1 µF capacitor is required between the output pin and the GND pin of the device.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).Guaranteed by characterization.
(@ VS = 3.3 V, TA = 25�C, unless otherwise noted.)
(@ VS = 3.3 V, TA = –40�C ≤ TA ≤ +85�C, unless otherwise noted.)
REF19x Series
REF192–SPECIFICATIONS
ELECTRICAL CHARACTERISTICSLINE REGULATION
LOAD REGULATION
DROPOUT VOLTAGE
NOTESFor proper operation, a 1 µF capacitor is required between the output pin and the GND pin of the device.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).Guaranteed by characterization.Line and load regulation specifications include the effect of self-heating.
Specifications subject to change without notice.
(@ VS = 3.3 V, –40�C ≤ TA ≤ +125�C, unless otherwise noted.)
REF193–SPECIFICATIONS
ELECTRICAL CHARACTERISTICSLINE REGULATION
DROPOUT VOLTAGE
NOTESInitial accuracy includes temperature hysteresis effect.Line and load regulation specifications include the effect of self-heating.Long-term drift is guaranteed by 1000 hours life test performed on three independent wafer lots at 125°C, with an LTPD of 1.3.
Specifications subject to change without notice.
(@ VS = 3.3 V, TA = 25�C, unless otherwise noted.)
REF19x Series
REF193–SPECIFICATIONS
ELECTRICAL CHARACTERISTICSLINE REGULATION
DROPOUT VOLTAGE
SLEEP PIN
SUPPLY CURRENT
NOTESFor proper operation, a 1 µF capacitor is required between the output pin and the GND pin of the device.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).Guaranteed by characterization.Line and load regulation specifications include the effect of self-heating.
Specifications subject to change without notice.
ELECTRICAL CHARACTERISTICSLINE REGULATION
DROPOUT VOLTAGE
NOTESFor proper operation, a 1 µF capacitor is required between the output pin and the GND pin of the device.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).Guaranteed by characterization.Line and load regulation specifications include the effect of self-heating.
Specifications subject to change without notice.
(@ VS = 3.3 V, –40�C ≤ TA ≤ +125�C, unless otherwise noted.)
(@ VS = 3.3 V, TA = –40�C ≤ TA ≤ +85�C, unless otherwise noted.)
REF19x Series
(@ VS = 5.0 V, TA = –40�C ≤ TA ≤ +85�C, unless otherwise noted.)
(@ VS = 5.0 V, TA = 25�C, unless otherwise noted.)
REF194–SPECIFICATIONS
ELECTRICAL CHARACTERISTICSLINE REGULATION
LOAD REGULATION
DROPOUT VOLTAGE
NOTESInitial accuracy includes temperature hysteresis effect.Line and load regulation specifications include the effect of self-heating.Long-term drift is guaranteed by 1000 hours life test performed on three independent wafer lots at 125°C, with an LTPD of 1.3.
Specifications subject to change without notice.
ELECTRICAL CHARACTERISTICSLINE REGULATION
LOAD REGULATION
DROPOUT VOLTAGE
SLEEP PIN
SUPPLY CURRENT
NOTESFor proper operation, a 1 µF capacitor is required between the output pin and the GND pin of the device.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).
REF19x Series
REF194–SPECIFICATIONS
ELECTRICAL CHARACTERISTICSLINE REGULATION
LOAD REGULATION
DROPOUT VOLTAGE
NOTESFor proper operation, a 1 µF capacitor is required between the output pin and the GND pin of the device.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).Guaranteed by characterization.Line and load regulation specifications include the effect of self-heating.
Specifications subject to change without notice.
(@ VS = 5.0 V, –40�C ≤ TA ≤ +125�C, unless otherwise noted.)
REF19x Series
REF195–SPECIFICATIONS
ELECTRICAL CHARACTERISTICSLINE REGULATION
LOAD REGULATION
DROPOUT VOLTAGE
NOTESInitial accuracy includes temperature hysteresis effect.Line and load regulation specifications include the effect of self-heating.Long-term drift is guaranteed by 1000 hours life test performed on three independent wafer lots at 125°C, with an LTPD of 1.3.
Specifications subject to change without notice.
ELECTRICAL CHARACTERISTICSLINE REGULATION
LOAD REGULATION
DROPOUT VOLTAGE
SLEEP PIN
SUPPLY CURRENT
NOTESFor proper operation, a 1 µF capacitor is required between the output pin and the GND pin of the device.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).Guaranteed by characterization.
(@ VS = 5.15 V, TA = –40�C ≤ TA ≤ +85�C, unless otherwise noted.)
(@ VS = 5.10 V, TA = 25�C, unless otherwise noted.)
REF19x Series
REF195–SPECIFICATIONS
ELECTRICAL CHARACTERISTICSLINE REGULATION
LOAD REGULATION
DROPOUT VOLTAGE
NOTESFor proper operation, a 1 µF capacitor is required between the output pin and the GND pin of the device.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).Guaranteed by characterization.Line and load regulation specifications include the effect of self-heating.
Specifications subject to change without notice.
REF196–SPECIFICATIONS
ELECTRICAL CHARACTERISTICSLINE REGULATION
DROPOUT VOLTAGE
NOTESInitial accuracy includes temperature hysteresis effect.Line and load regulation specifications include the effect of self-heating.Long-term drift is guaranteed by 1000 hours life test performed on three independent wafer lots at 125°C, with an LTPD of 1.3.
Specifications subject to change without notice.
(@ VS = 5.20 V, –40�C ≤ TA ≤ +125�C, unless otherwise noted.)
(@ VS = 3.5 V, TA = 25�C, unless otherwise noted.)
REF19x Series
REF196–SPECIFICATIONS
ELECTRICAL CHARACTERISTICSLINE REGULATION
DROPOUT VOLTAGE
SLEEP PIN
SUPPLY CURRENT
NOTESFor proper operation, a 1 µF capacitor is required between the output pin and the GND pin of the device.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).Guaranteed by characterization.Line and load regulation specifications include the effect of self-heating.
Specifications subject to change without notice.
ELECTRICAL CHARACTERISTICSLINE REGULATION
DROPOUT VOLTAGE
NOTESFor proper operation, a 1 µF capacitor is required between the output pin and the GND pin of the device.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).Guaranteed by characterization.Line and load regulation specifications include the effect of self-heating.
Specifications subject to change without notice.
(@ VS = 3.50 V, –40�C ≤ TA ≤ +125�C, unless otherwise noted.)
(@ VS = 3.5 V, TA = –40�C ≤ TA ≤ +85�C, unless otherwise noted.)
REF19x Series
REF198–SPECIFICATIONS
ELECTRICAL CHARACTERISTICSLINE REGULATION
LOAD REGULATION
DROPOUT VOLTAGE
NOTESInitial accuracy includes temperature hysteresis effect.Line and load regulation specifications include the effect of self-heating.Long-term drift is guaranteed by 1000 hours life test performed on three independent wafer lots at 125°C, with an LTPD of 1.3.
Specifications subject to change without notice.
ELECTRICAL CHARACTERISTICSLINE REGULATION
LOAD REGULATION
DROPOUT VOLTAGE
SLEEP PIN
SUPPLY CURRENT
NOTESFor proper operation, a 1 µF capacitor is required between the output pin and the GND pin of the device.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).Guaranteed by characterization.
(@ VS = 5.0 V, TA = 25�C, unless otherwise noted.)
(@ VS = 5.0 V, –40�C ≤ TA ≤ +85�C, unless otherwise noted.)
