Document
REF3112 REF3120 REF3125 REF3130 REF3133 REF3140
SBVS046A – DECEMBER 2003 – REVISED JANUARY 2004
15ppm/°C Max, 100µA, SOT23-3 SERIES VOLTAGE REFERENCE
FEATURES
q MicroSIZE PACKAGE: SOT23-3 q LOW DROPOUT: 5mV q HIGH OUTPUT CURRENT: ±10mA q HIGH ACCURACY: 0.2% max q LOW IQ: 115µA max q EXCELLENT SPECIFIED DRIFT PERFORMANCE: 15ppm/°C (max) from 0°C to +70°C 20ppm/°C (max) from –40°C to +125°C
DESCRIPTION
The REF31xx is a family of precision, low power, low dropout, series voltage references available in the tiny SOT23-3 package. The REF31xx’s small size and low power consumption (100µA typ) make it ideal for portable and battery-powered applications. The REF31xx does not require a load capacitor, but is stable with any capacitive load and can sink/source up to 10mA of output current. Unloaded, the REF31xx can be operated on supplies down to 5mV above the output voltage. All models are specified for the wide temperature range of –40°C to +125°C.
APPLICATIONS
q PORTABLE, BATTERY-POWERED EQUIPMENT q DATA ACQUISITION SYSTEMS q MEDICAL EQUIPMENT q HAND-HELD TEST EQUIPMENT
PRODUCT REF3112 REF3120 REF3125 REF3130 REF3133 REF3140 IN 1 REF3112 REF3120 REF3125 REF3130 REF3133 REF3140 SOT23-3 VOLTAGE (V) 1.25 2.048 2.5 3.0 3.3 4.096
3
GND
OUT
2
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
Copyright © 2003-2004, Texas Instruments Incorporated
www.ti.com
ABSOLUTE MAXIMUM RATINGS(1)
Supply Voltage, V+ to V– ................................................................... 7.0V Output Short-Circuit ................................................................. Continuous Operating Temperature .................................................. –55°C to +135°C Storage Temperature ..................................................... –65°C to +150°C Junction Temperature .................................................................... +150°C Lead Temperature (soldering, 10s) ............................................... +300°C NOTES: (1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only, and functional operation of the device at these, or any other conditions beyond those specified, is not implied.
ELECTROSTATIC DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
PACKAGE/ORDERING INFORMATION(1)
PACKAGE DESIGNATOR DBZ SPECIFIED TEMPERATURE RANGE –40°C to +125°C PACKAGE MARKING R31A ORDERING NUMBER REF3112AIDBZT REF3112AIDBZR REF3120AIDBZT REF3120AIDBZR REF3125AIDBZT REF3125AIDBZR REF3130AIDBZT REF3130AIDBZR REF3133AIDBZT REF3133AIDBZR REF3140AIDBZT REF3140AIDBZR TRANSPORT MEDIA, QUANTITY Tape and Reel, 250 Tape and Reel, 3000 Tape and Reel, 250 Tape and Reel, 3000 Tape and Reel, 250 Tape and Reel, 3000 Tape and Reel, 250 Tape and Reel, 3000 Tape and Reel, 250 Tape and Reel, 3000 Tape and Reel, 250 Tape and Reel, 3000
PRODUCT REF3112
PACKAGE-LEAD SO T23-3
"
REF3120
"
SOT23-3
"
DBZ
"
–40°C to +125°C
"
R31B
"
REF3125
"
SOT23-3
"
DBZ
"
–40°C to +125°C
"
R31C
"
REF3130
"
SOT23-3
"
DBZ
"
–40°C to +125°C
"
R31E
"
REF3133
"
SOT23-3
"
DBZ
"
–40°C to +125°C
"
R31F
"
REF3140
"
SOT23-3
"
DBZ
"
–40°C to +125°C
"
R31D
"
"
"
"
"
NOTES: (1) For the most current package and ordering information, see the Package Option Addendum located at the end of this data sheet.
ELECTRICAL CHARACTERISTICS
Boldface limits apply over the specified temperature range, TA = –40°C to +125°C.
At TA = +25°C, ILOAD = 0mA, VIN = 5V, unless otherwise noted. REF31xx PARAMETER CONDITIONS MIN TYP MAX UNITS
REF3112(1) - 1.25V
OUTPUT VOLTAGE Initial Accuracy NOISE Output Voltage Noise Voltage Noise VOUT 1.2475 –0.2 f = 0.1Hz to 10Hz f = 10Hz to 10kHz 1.25 1.2525 0.2 V % µVPP µVrms
17 24
REF3120 – 2.048
OUTPUT VOLTAGE Initial Accuracy NOISE Output Voltage Noise Voltage Noise VOUT 2.0439 –0.2 f = 0.1Hz to 10Hz f = 10Hz to 10kHz 2.048 2.0521 0.2 V % µVPP µVrms
27 39
REF3125 – 2.5V
OUTPUT VOLTAGE Initial Accuracy NOISE Output Voltage Noise Voltage Noise VOUT 2.4950 –0.2 f = 0.1Hz to 10Hz f .