REF2912 REF2920 REF2925 REF2930 REF2933 REF2940 www.ti.com SBVS033B – JUNE 2002 – REVISED FEBRUARY 2008 100ppm/°C, 50µA in SOT23-3 CMOS VOLTAGE REFERENCE FEATURES DESCRIPTION ● MicroSIZE PACKAGE: SOT23-3 The REF29xx is a precision, low-power, low-voltage dropout voltage reference family available in a tiny SOT23-3. ● LOW DROPOUT: 1mV ● HIGH OUTPUT CURRENT: 25mA ● LOW TEMPERATURE DRIFT: 100ppm/°C max ● HIGH ACCURACY: 2% ● LOW IQ: 50µA max The REF29xx small size and low power consumption (50µA max) make it ideal for portable and battery-powered applications. The REF29xx does not require a load capacitor, but is stable with any capacitive load. Unloaded, the REF29xx can be operated with supplies within 1mV of output voltage. All models are specified for the wide temperature range, –40°C to +125°C. APPLICATIONS ● PORTABLE, BATTERY-POWERED EQUIPMENT PRODUCT VOLTAGE (V) REF2912 1.25 REF2920 2.048 ● MEDICAL EQUIPMENT REF2925 2.5 ● HAND-HELD TEST EQUIPMENT REF2930 3.0 ● DATA ACQUISITION SYSTEMS REF2933 3.3 REF2940 4.096 DROPOUT VOLTAGE vs LOAD CURRENT OUT 1 2 REF2912 REF2920 REF2925 REF2930 REF2933 REF2940 350 3 300 GND SOT23-3 Dropout Voltage (mV) IN 250 200 150 100 50 0 0 5 10 15 20 25 30 Load Current (mA) 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. Copyright © 2002-2008, Texas Instruments Incorporated 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. www.ti.com ABSOLUTE MAXIMUM RATINGS(1) ELECTROSTATIC DISCHARGE SENSITIVITY Supply Voltage, V+ to V– ................................................................... 7.0V Output Short-Circuit(2) .............................................................. Continuous Operating Temperature .................................................. –40°C to +125°C 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. Storage Temperature ..................................................... –65°C to +125°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. (2) Short-circuit to ground. 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) PRODUCT REF2912 " REF2920 " REF2925 " REF2930 " REF2933 " REF2940 " PACKAGE-LEAD PACKAGE DESIGNATOR(1) SPECIFIED TEMPERATURE RANGE PACKAGE MARKING ORDERING NUMBER TRANSPORT MEDIA, QUANTITY SO T23-3 DBZ –40°C to +125°C R29A " " " " REF2912AIDBZT REF2912AIDBZR Tape and Reel, 250 Tape and Reel, 3000 SOT23-3 DBZ –40°C to +125°C R29B " " " " REF2920AIDBZT REF2920AIDBZR Tape and Reel, 250 Tape and Reel, 3000 SOT23-3 DBZ –40°C to +125°C R29C " " " " REF2925AIDBZT REF2925AIDBZR Tape and Reel, 250 Tape and Reel, 3000 SOT23-3 DBZ –40°C to +125°C R29D REF2930AIDBZT Tape and Reel, 250 " " " " REF2930AIDBZR Tape and Reel, 3000 SOT23-3 DBZ –40°C to +125°C R29E " " " " REF2933AIDBZT REF2933AIDBZR Tape and Reel, 250 Tape and Reel, 3000 SOT23-3 DBZ –40°C to +125°C R29F " " " " REF2940AIDBZT REF2940AIDBZR Tape and Reel, 250 Tape and Reel, 3000 NOTE: (1) For the most current package and ordering information, see the Package Option Addendum at the end of this data sheet, or see the TI web site at www.ti.com. 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. REF29xx PARAMETER CONDITIONS MIN TYP MAX UNITS 1.225 1.25 1.275 2 V % REF2912-1.25V OUTPUT VOLTAGE Initial Accuracy VOUT NOISE Output Voltage Noise Voltage Noise f = 0.1Hz to 10Hz f = 10Hz to 10kHz 14 42 LINE REGULATION 1.8V ≤ VIN ≤ 5.5V 60 190 µV/V 2.048 2.089 2 V % µVPP µVrms REF2920 OUTPUT VOLTAGE Initial Accuracy VOUT 2.007 NOISE Output Voltage Noise Voltage Noise f = 0.1Hz to 10Hz f = 10Hz to 10kHz 23 65 LINE REGULATION VREF + 50mV ≤ VIN ≤ 5.5V 110 290 µV/V 2.50 2.550 2 V % µVPP µVrms REF2925 OUTPUT VOLTAGE Initial Accuracy 2 VOUT 2.450 NOISE Output Voltage Noise Voltage Noise f = 0.1Hz to 10Hz f = 10Hz to 10kHz 28 80 LINE REGULATION VREF + 50mV ≤ VIN ≤ 5.5V 120 µVPP µVrms 325 µV/V REF2912, 2920, 2925, 2930, 2933, 2940 www.ti.com SBVS033B ELECTRICAL CHARACTERISTICS (Cont.) 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. REF29xx PARAMETER CONDITIONS MIN TYP MAX UNITS 2.940 3.0 3.06 2 V % REF2930 OUTPUT VOLTAGE Initial Accuracy VOUT NOISE Output Voltage Noise Voltage Noise f = 0.1Hz to 10Hz f = 10Hz to 10kHz 33 94 LINE REGULATION VREF + 50mV ≤ VIN ≤ 5.5V 120 375 µV/V 3.30 3.366 2 V % µVPP µVrms REF2933 OUTPUT VOLTAGE Initial Accuracy VOUT 3.234 NOISE Output Voltage Noise Voltage Noise f = 0.1Hz to 10Hz f = 10Hz to 10kHz 36 105 LINE REGULATION VREF + 50mV ≤ VIN ≤ 5.5V 130 400 µV/V 4.096 4.178 2 V % µVPP µVrms REF2940 OUTPUT VOLTAGE Initial Accuracy VOUT NOISE Output Voltage Noise Voltage Noise LINE REGULATION 4.014 µVPP µVrms f = 0.1Hz to 10Hz f = 10Hz to 10kHz 45 128 VREF + 50mV ≤ VIN ≤ 5.5V 160 410 µV/V 35 100 ppm/°C 25 mA REF2912, REF2920, REF2925, REF2930, REF2933, REF2940 OUTPUT VOLTAGE TEMP DRIFT(2) OUTPUT CURRENT dVOUT/dT –40°C ≤ TA ≤ +125°C ILOAD LONG-TERM STABILITY LOAD REGULATION(3) THERMAL HYSTERESIS(4) DROPOUT VOLTAGE SHORT-CIRCUIT CURRENT dVOUT/dILOAD TEMPERATURE RANGE Specified Range Operating Range Storage Range Thermal Resistance SOT23-3 Surface-Mount 24 15 ppm ppm 0mA < ILOAD < 25mA, VIN = VREF + 500mV(1) 3 100 µV/mA ppm dT 25 100 VIN – VOUT 1 50 ISC 45 mA 120 µs TURN-ON SETTLING TIME POWER SUPPLY Voltage Over Temperature Quiescent Current Over Temperature 0-1000H 1000-2000H to 0.1% at VIN = 5V with CL = 0 VS IQ IL = 0 –40°C ≤ TA ≤ +125°C VREF + 0.001(5) VREF + 0.05 42 –40°C ≤ TA ≤ +125°C –40 –40 –65 θJC θJA 110 336 mV 5.5 5.5 50 59 V V µA µA +125 +125 +150 °C °C °C °C/W °C/W NOTES: (1) Minimum supply voltage for REF2912 is 1.8V. (2) Box Method used to determine over temperature drift. (3) Typical value of load regulation reflects measurements using a force and sense contacts, see text “Load Regulation”. (4) Thermal hysteresis procedure is explained in more detail in Applications Information section of data sheet. (5) For IL > 0, see Typical Characteristic curves. REF2912, 2920, 2925, 2930, 2933, 2940 SBVS033B 3 www.ti.com TYPICAL CHARACTERISTICS At TA = +25°C, VIN = +5V power supply, REF2925 is used for typical characteristics, unless otherwise noted. TEMPERATURE DRIFT (–40°C to +125°C) 100 45 90 40 80 35 70 Number of Units Number of Units TEMPERATURE DRIFT (0°C to +70°C) 50 30 25 20 15 60 50 40 30 10 20 5 10 0 0 5 5 10 15 20 25 30 35 40 45 50 55 60 65 10 15 20 25 30 35 40 45 50 55 60 65 Drift (ppm/°C) Drift (ppm/°C) MAXIMUM LOAD CURRENT vs TEMPERATURE OUTPUT VOLTAGE vs TEMPERATURE 35 Maximum Load Current (mA) 2.502 Output Voltage (V) 2.500 2.498 2.496 2.494 2.492 30 25 20 15 10 5 2.490 –40 –20 0 20 40 60 80 100 120 –40 140 –20 0 40 60 80 100 120 140 QUIESCENT CURRENT vs TEMPERATURE 6 60 5 50 4 40 IQ (µA) Load Regulation (µV/mA) LOAD REGULATION vs TEMPERATURE 3 30 2 20 1 10 0 0 –40 –20 0 20 40 60 80 100 120 140 –40 Temperature (°C) 4 20 Temperature (°C) Temperature (°C) –20 0 20 40 60 80 100 120 140 Temperature (°C) REF2912, 2920, 2925, 2930, 2933, 2940 www.ti.com SBVS033B TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VIN = +5V power supply, REF2925 is used for typical characteristics, unless otherwise noted. LINE REGULATION vs TEMPERATURE OUTPUT IMPEDANCE vs FREQUENCY 100 150 Output Impedance (dB) Line Regulation (µV/V) 200 100 50 0 –50 10 1 0.1 0.01 –40 –20 0 20 40 60 80 100 120 1 140 10 100 Temperature (°C) POWER-SUPPLY REJECTION RATIO vs FREQUENCY 2.50138 80 2.50000 70 2.49862 Output Voltage (V) PSRR (dB) 10k 100k OUTPUT VOLTAGE vs SUPPLY VOLTAGE (No Load) 90 60 50 40 30 2.49724 2.49586 2.49448 2.49310 20 2.49172 10 2.49034 0 2.48896 1 10 100 1k 10k 100k 2.5 3 3.5 4 Frequency (Hz) 4.5 5 5.5 6 Supply (V) OUTPUT VOLTAGE vs SUPPLY VOLTAGE (ILOAD = 25mA) OUTPUT VOLTAGE vs LOAD CURRENT 2.5008 2.50152 2.5000 2.50000 2.4992 2.49848 Output Voltage (V) Output Voltage (V) 1k Frequency (Hz) 2.4984 2.4976 2.4968 2.4967 2.4952 2.49696 2.49544 2.49392 2.49824 2.49088 2.4944 2.48936 2.4936 2.5 3 3.5 4 4.5 5 5.5 0 6 REF2912, 2920, 2925, 2930, 2933, 2940 SBVS033B 5 10 15 20 25 30 Load Current (mA) Supply (V) 5 www.ti.com TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VIN = +5V power supply, REF2925 is used for typical characteristics, unless otherwise noted. STEP RESPONSE, CL = 0, 5V START-UP 5V/div VOUT VIN 1V/div 3V/div VIN 1V/div STEP RESPONSE, CL = 0, 3V START-UP VOUT 40µs/div 10µs/div LINE TRANSIENT RESPONSE 0-1mA LOAD TRANSIENT (CL = 0) VIN IL = 0mA 20mV/div 50mV/div 500mV/div IL = 1mA VOUT VOUT 10µs/div 10µs/div 0-5mA LOAD TRANSIENT (CL = 0) 1-6mA LOAD TRANSIENT (CL = 1µF) IL = 5mA IL = 6mA 20mV/div 20mV/div IL = 0mA VOUT 10µs/div 6 IL = 0mA VOUT 40µs/div REF2912, 2920, 2925, 2930, 2933, 2940 www.ti.com SBVS033B TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VIN = +5V power supply, REF2925 is used for typical characteristics, unless otherwise noted. 1-25mA LOAD TRANSIENT (CL = 1µF) 0.1Hz TO 10Hz NOISE IL = 25mA 10µV/div 20mV/div IL = 1mA VOUT 1.0s/div 100µs/div LONG-TERM STABILITY 1000 TO 2000 HOURS LONG-TERM STABILITY 0 TO 1000 HOURS 80 Absolute Output Voltage Drift (ppm) Absolute Output Voltage Drift (ppm) 80 70 60 50 40 30 20 10 100 200 300 400 500 600 700 800 60 50 40 30 20 10 0 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 0 0 70 900 1000 Time (hours) Time (hours) LONG-TERM STABILITY 0 TO 2000 HOURS Absolute Output Voltage Drift (ppm) 80 70 60 50 40 30 20 10 0 0 200 400 600 800 1000 1200 1400 1600 1800 2000 Time (hours) REF2912, 2920, 2925, 2930, 2933, 2940 SBVS033B 7 www.ti.com THEORY OF OPERATION 42.5 42.0 IQ (µA) The REF29xx is a series, CMOS, precision bandgap voltage reference. Its basic topology is shown in Figure 1. The transistors Q1 and Q2 are biased such that the current density of Q1 is greater than that of Q2. The difference of the two base-emitter voltages, Vbe1 – Vbe2, has a positive temperature coefficient and is forced across resistor R1. This voltage is gained up and added to the base-emitter voltage of Q2, which has a negative coefficient. The resulting output voltage is virtually independent of temperature. The curvature of the bandgap voltage, as seen in the typical curve, Output Voltage vs Temperature, is due to the slightly nonlinear temperature coefficient of the base-emitter voltage of Q2. The REF29xx features a low quiescent current, which is extremely stable over changes in both temperature and supply. The typical room temperature quiescent current is 42µA, and the maximum quiescent current over temperature is just 59µA. Additionally, the quiescent current typically changes less than 2.5µA over the entire supply range, as shown in Figure 3. 41.5 41.0 40.5 40.0 1 + + Vbe1 Vbe2 – 2 2.5 3 3.5 4 4.5 5 5.5 6 VIN (V) – Q1 1.5 R1 FIGURE 3. Supply Current vs Supply Voltage. Q2 FIGURE 1. Simplified Schematic of Bandgap Reference. Supply voltages below the specified levels can cause the REF29xx to momentarily draw currents greater than the typical quiescent current. Using a power supply with a fast rising edge and low output impedance easily prevents this. APPLICATION INFORMATION THERMAL HYSTERESIS The REF29xx does not require a load capacitor, and is stable with any capacitive load. Figure 2 shows typical connections required for operation of the REF29xx. A supply bypass capacitor of 0.47µF is recommended. Thermal hysteresis for the REF29xx is defined as the change in output voltage after operating the device at 25°C, cycling the device through the specified temperature range, and returning to 25°C, and can be expressed as: abs VPRE – VPOST 6 VHYST = • 10 (ppm) V NOM VIN Where: VHYST = Calculated hysteresis 1 0.47µF VOUT REF29xx VPRE = Output voltage measured at 25°C pretemperature cycling 3 VPOST = Output voltage measured when device has been operated at 25°C, cycled through specified range –40°C to +125°C and returned to operation at 25°C 2 FIGURE 2. Typical Connections for Operating REF29xx. TEMPERATURE DRIFT SUPPLY VOLTAGE The REF29xx family of references features an extremely low dropout voltage. With the exception of the REF2912, which has a minimum supply requirement of 1.8V, the REF29xx can be operated with a supply of only 1mV above the output voltage in an unloaded condition. For loaded conditions, a typical dropout voltage versus load performance plot is shown on the cover page. 8 The REF29xx is designed to exhibit minimal drift error, defined as the change in output voltage over varying temperature. Using the box method of drift measurement, the REF29xx features a typical drift coefficient of 20ppm from 0°C to 70°C— the primary temperature range of use for many applications. For industrial temperature ranges of –40°C to 125°C, the REF29xx family drift increases to a typical value of 50ppm. REF2912, 2920, 2925, 2930, 2933, 2940 www.ti.com SBVS033B NOISE PERFORMANCE The REF29xx generates noise less than 50µVPP between frequencies of 0.1Hz to 10Hz, and can be seen in the Typical Characteristic Curve, 0.1 to 10Hz Voltage Noise. The noise voltage of the REF29xx increases with output voltage and operating temperature. Additional filtering may be used to improve output noise levels, although care should be taken to ensure the output impedance does not degrade ac performance. LONG TERM STABILITY Long term stability refers to the change of the output voltage of a reference over a period of months or years. This effect lessens as time progresses as is apparent by the long term stability curves. The typical drift value for the REF29xx is 24ppm from 0-1000 hours, and 15ppm from 1000-2000 hours. This parameter is characterized by measuring 30 units at regular intervals for a period of 2000 hours. contact area of the output pin reduce the impact of contact and trace resistance, resulting in accurate measurement of the load regulation contributed solely by the REF29xx. For applications requiring improved load regulation, force and sense lines should be used. APPLICATION CIRCUITS Negative Reference Voltage For applications requiring a negative and positive reference voltage, the OPA703 and REF29xx can be used to provide a dual supply reference from a ±5V supply. Figure 5 shows the REF2925 used to provide a ±2.5V supply reference voltage. The low offset voltage and low drift of the OPA703 complement the low drift performance of the REF29xx to provide an accurate solution for split-supply applications. +5V LOAD REGULATION +2.5V REF2925 Load regulation is defined as the change in output voltage due to changes in load current. Load regulation for the REF29xx is measured using force and sense contacts as pictured in Figure 4. The force and sense lines tied to the 10kΩ 10kΩ +5V –2.5V OPA703 Output Pin + –5V Contact and Trace Resistance VOUT – FIGURE 5. REF2925 Combined with OPA703 to Create Positive and Negative Reference Voltages. IL Sense Line Force Line DATA ACQUISITION Load Meter Often data acquisition systems require stable voltage references to maintain necessary accuracy. The REF29xx family features stability and a wide range of voltages suitable for most micro-controllers and data converters. See Figure 6 for a basic data acquisition system. FIGURE 4. Accurate Load Regulation of REF29xx. 3.3V REF2933 V+ GND 5Ω + 1µF to 10µF ADS7822 VREF VCC 0.1µF VIN +In CS –In DOUT GND VS + 1µF to 10µF Microcontroller DCLOCK FIGURE 6. Basic Data Acquisition System 1. REF2912, 2920, 2925, 2930, 2933, 2940 SBVS033B 9 www.ti.com PACKAGE OPTION ADDENDUM www.ti.com 8-Feb-2008 PACKAGING INFORMATION (1) Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty REF2912AIDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2912AIDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2912AIDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2912AIDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2920AIDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2920AIDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2920AIDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2920AIDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2925AIDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2925AIDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2925AIDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2925AIDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2930AIDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2930AIDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2930AIDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2930AIDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2933AIDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2933AIDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2933AIDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2933AIDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2940AIDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2940AIDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2940AIDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM REF2940AIDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM The marketing status values are defined as follows: Addendum-Page 1 Lead/Ball Finish MSL Peak Temp (3) PACKAGE OPTION ADDENDUM www.ti.com 8-Feb-2008 ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 2 PACKAGE MATERIALS INFORMATION www.ti.com 11-Mar-2008 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel Diameter Width (mm) W1 (mm) REF2912AIDBZR SOT-23 DBZ 3 3000 179.0 A0 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 8.4 3.15 2.95 1.22 4.0 8.0 Q3 REF2912AIDBZT SOT-23 DBZ 3 250 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 REF2920AIDBZR SOT-23 DBZ 3 3000 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 REF2920AIDBZT SOT-23 DBZ 3 250 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 REF2925AIDBZR SOT-23 DBZ 3 3000 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 REF2925AIDBZT SOT-23 DBZ 3 250 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 REF2930AIDBZR SOT-23 DBZ 3 3000 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 REF2930AIDBZT SOT-23 DBZ 3 250 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 REF2933AIDBZR SOT-23 DBZ 3 3000 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 REF2933AIDBZT SOT-23 DBZ 3 250 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 REF2940AIDBZR SOT-23 DBZ 3 3000 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 REF2940AIDBZT SOT-23 DBZ 3 250 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 11-Mar-2008 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) REF2912AIDBZR SOT-23 DBZ 3 3000 195.0 200.0 45.0 REF2912AIDBZT SOT-23 DBZ 3 250 195.0 200.0 45.0 REF2920AIDBZR SOT-23 DBZ 3 3000 195.0 200.0 45.0 REF2920AIDBZT SOT-23 DBZ 3 250 195.0 200.0 45.0 REF2925AIDBZR SOT-23 DBZ 3 3000 195.0 200.0 45.0 REF2925AIDBZT SOT-23 DBZ 3 250 195.0 200.0 45.0 REF2930AIDBZR SOT-23 DBZ 3 3000 195.0 200.0 45.0 REF2930AIDBZT SOT-23 DBZ 3 250 195.0 200.0 45.0 REF2933AIDBZR SOT-23 DBZ 3 3000 195.0 200.0 45.0 REF2933AIDBZT SOT-23 DBZ 3 250 195.0 200.0 45.0 REF2940AIDBZR SOT-23 DBZ 3 3000 195.0 200.0 45.0 REF2940AIDBZT SOT-23 DBZ 3 250 195.0 200.0 45.0 Pack Materials-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. 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