TLV 3491 TLV 3492 TLV3 ® 494 TLV 349 4 TLV3491 TLV3492 TLV3494 SBOS262C – DECEMBER 2002 – REVISED MAY 2004 1.8V, Nanopower, PUSH-PULL OUTPUT COMPARATOR FEATURES DESCRIPTION ● VERY LOW SUPPLY CURRENT: 0.8µA (typ) ● INPUT COMMON-MODE RANGE 200mV BEYOND SUPPLY RAILS ● SUPPLY VOLTAGE: +1.8V to +5.5V ● HIGH SPEED: 6µs The TLV349x family of push-pull output comparators features a fast 6µs response time and < 1.2µA (max) nanopower capability, allowing operation from 1.8V – 5.5V. Input common-mode range beyond supply rails make the TLV349x an ideal choice for low-voltage applications. ● PUSH-PULL CMOS OUTPUT STAGE ● SMALL PACKAGES: SOT23-5 (Single) SOT23-8 (Dual) APPLICATIONS ● ● ● ● ● PORTABLE MEDICAL EQUIPMENT WIRELESS SECURITY SYSTEMS REMOTE CONTROL SYSTEMS HANDHELD INSTRUMENTS ULTRA-LOW POWER SYSTEMS Micro-sized packages provide options for portable and spacerestricted applications. The single (TLV3491) is available in SOT23-5 and SO-8. The dual (TLV3492) comes in SOT23-8 and SO-8. The quad (TLV3494) is available in TSSOP-14 and SO-14. The TLV349x is excellent for power-sensitive, low-voltage (2-cell) applications. TLV349x RELATED PRODUCTS PRODUCT FEATURES TLV370x 560nA, 2.5V to 16V, Push-Pull CMOS Output Stage Comparator TLV340x 550nA, 2.5V to 16V, Open Drain Output Stage Comparator 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 © 2002-2004, 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 ................................................................................. +5.5V Signal Input Terminals, Voltage(2) .................. (V–) – 0.5V to (V+) + 0.5V Current(2) .................................................. ±10mA Output Short-Circuit(3) .............................................................. Continuous Operating Temperature .................................................. –40°C to +125°C Storage Temperature ..................................................... –65°C to +150°C Junction Temperature .................................................................... +150°C Lead Temperature (soldering, 10s) ............................................... +300°C ESD Rating (Human Body Model) .................................................. 3000V 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. NOTE: (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) Input terminals are diode-clamped to the power-supply rails. Input signals that can swing more than 0.5V beyond the supply rails should be current limited to 10mA or less. (3) Short-circuit to ground, one amplifier per package. PACKAGE/ORDERING INFORMATION(1) PRODUCT PACKAGE-LEAD PACKAGE DESIGNATOR SPECIFIED TEMPERATURE RANGE PACKAGE MARKING ORDERING NUMBER TRANSPORT MEDIA, QUANTITY SOT23-5 DBV –40°C to +125°C VBNI " " " " TLV3491AIDBVT TLV3491AIDBVR Tube, 250 Tape and Reel, 3000 SO-8 D –40°C to +125°C TLV3491 " " " " TLV3491AID TLV3491AIDR Tube, 100 Tube, 2500 SOT23-8 DCN –40°C to +125°C VBO1 " " " " TLV3492AIDCNT TLV3492AIDCNR Tube, 250 Tape and Reel, 3000 SO-8 D –40°C to +125°C TLV3492 " " " " TLV3492AID TLV3492AIDR Tube, 100 Tape and Reel, 2500 TSSOP-14 PW –40°C to +125°C TLV3494 " " " " TLV3494AIPWT TLV3494AIPWR Tape and Reel, 94 Tape and Reel, 2500 SO-14 D –40°C to +125°C TLV3494 " " " " TLV3494AID TLV3494AIDR Tape and Reel, 58 Tape and Reel, 2500 TLV3491 " TLV3491 " TLV3492 " TLV3492 " TLV3494 " TLV3494 " NOTE: (1) For the most current package and ordering information, see the Package Option Addendum located at the end of this data sheet. PIN CONFIGURATIONS Top View V– 2 +In 3 5 4 V+ –In SOT23-5 NC(1) 1 8 NC(1) –In 2 7 V+ +In 3 6 Output V– 4 5 NC(1) Out A 1 –In A 2 +In A 3 V– 4 VBO1 1 VBNI Out Out A 1 14 Out D 8 V+ –In A 2 13 –In D 7 Out B +In A 3 12 +In D 6 –In B V+ 4 5 +In B +In B 5 10 +In C –In B 6 9 –In C Out B 7 8 Out C SOT23-8 SO-8 TLV3491 TLV3494 11 V– TSSOP-14 SO-14 SO-8 NOTES: (1) NC means no internal connection. 2 TLV3491, 3492, 3494 www.ti.com SBOS262C ELECTRICAL CHARACTERISTICS: VS = +1.8V to +5.5V Boldface limits apply over the specified temperature range, TA = –40°C to +125°C. At TA = +25°C, and VS = +1.8V to +5.5V, unless otherwise noted. TLV3491, TLV3492, TLV3494 PARAMETER OFFSET VOLTAGE Input Offset Voltage vs Temperature vs Power Supply INPUT BIAS CURRENT Input Bias Current Input Offset Current INPUT VOLTAGE RANGE Common-Mode Voltage Range Common-Mode Rejection Ratio CONDITION MIN VOS dVOS/dT PSRR IB IOS VCM CMRR t(PLH) Propagation Delay Time, High-to-Low t(PHL) Rise Time Fall Time OUTPUT Voltage Output High from Rail Voltage Output Low from Rail Short-Circuit Current POWER SUPPLY Specified Voltage Operating Voltage Range Quiescent Current(1) tR tF VOH VOL ISC UNITS ±3 ±15 350 1000 mV µV/°C µV/V VCM = VCC/2 VCM = VCC/2 ±1 ±1 ±10 ±10 pA pA (V+) + 0.2V 74 62 V dB dB 2 4 pF pF 12 6 13.5 6.5 100 100 µs µs µs µs ns ns VCM = –0.2V to (V+) – 1.5V VCM = –0.2V to (V+) + 0.2V ±12 (V–) – 0.2V 60 54 f = 10kHz, VSTEP = 1V Input Overdrive = 10mV Input Overdrive = 100mV Input Overdrive = 10mV Input Overdrive = 100mV CL = 10pF CL = 10pF VS = 5V IOUT = 5mA IOUT = 5mA 90 160 See Typical Characteristics 1.8 1.8 VS IQ MAX VCM = 0V, IO = 0V TA = –40°C to +125°C VS = 1.8V to 5.5V INPUT CAPACITANCE Common-Mode Differential SWITCHING CHARACTERISTICS Propagation Delay Time, Low-to-High TYP VO = 5V, VO = High TEMPERATURE RANGE Specified Range Operating Range Storage Range Thermal Resistance, θJA SOT23-5, SOT23-8 SO-8 SO-14, TSSOP-14 0.85 –40 –40 –65 200 150 100 200 200 mV mV 5.5 5.5 1.2 V V µA +125 +125 +150 °C °C °C °C/W °C/W °C/W NOTE: (1) IQ per channel. TLV3491, 3492, 3494 SBOS262C www.ti.com 3 TYPICAL CHARACTERISTICS At TA = +25°C, VS = +1.8V to +5.5V, and Input Overdrive = 100mV, unless otherwise noted. QUIESCENT CURRENT vs OUTPUT SWITCHING FREQUENCY QUIESCENT CURRENT vs TEMPERATURE 12 1.00 VDD = 3V VS = 5V 10 Quiescent Current (µA) Quiescent Current (µA) 0.95 0.90 VDD = 5V 0.85 VDD = 1.8V 0.80 0.75 0.70 8 6 4 VS = 3V 2 0.65 VS = 1.8V 0 0.60 –50 –25 0 25 50 75 100 1 125 10 SHORT-CIRCUIT CURRENT vs SUPPLY VOLTAGE 1k 10k 100k INPUT BIAS CURRENT vs TEMPERATURE 140 45 40 Input Bias Current (pA) 120 Short-Circuit Current (mA) 100 Output Transition Frequency (Hz) Temperature (°C) 100 Sink 80 60 Source 40 20 35 30 25 20 15 10 5 0 0 –5 1.5 2 2.5 3 3.5 4 4.5 5 5.5 –50 –25 0 25 Supply Voltage (V) 50 75 100 125 Temperature (°C) OUTPUT LOW vs OUTPUT CURRENT OUTPUT HIGH vs OUTPUT CURRENT 0.25 0.25 VDD = 3V 0.2 0.2 VDD = 1.8V VDD = 3V VS – VOH (V) VOL (V) VDD = 1.8V 0.15 VDD = 5V 0.1 0.05 0.1 VDD = 5V 0.05 0 0 0 2 4 6 8 10 12 0 Output Current (mA) 4 0.15 2 4 6 8 10 12 Output Current (mA) TLV3491, 3492, 3494 www.ti.com SBOS262C TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VS = +1.8V to +5.5V, and Input Overdrive = 100mV, unless otherwise noted. PROPAGATION DELAY (tPLH) vs CAPACITIVE LOAD 80 70 70 60 60 50 tPHL (µs) 50 tPLH (µs) PROPAGATION DELAY (tPHL) vs CAPACITIVE LOAD 80 VDD = 5V 40 VDD = 3V 30 VDD = 1.8V 20 VDD = 3V 40 30 20 10 10 0 0.01 0.1 1 10 100 VDD = 1.8V 0 0.01 1k 0.1 1 PROPAGATION DELAY (tPLH) vs INPUT OVERDRIVE 20 100 1k PROPAGATION DELAY (tPHL) vs INPUT OVERDRIVE 20 18 18 16 16 VDD = 5V 14 tPHL (µs) 14 tPLH (µs) 10 Capacitive Load (nF) Capacitive Load (nF) 12 VDD = 3V 10 12 VDD = 1.8V 10 VDD = 3V VDD = 1.8V 8 8 6 6 4 4 0 10 20 30 40 50 60 70 80 90 VDD = 5V 0 100 10 20 30 PROPAGATION DELAY (tPLH) vs TEMPERATURE 8.0 40 50 60 70 80 90 100 Input Overdrive (mV) Input Overdrive (mV) PROPAGATION DELAY (tPHL) vs TEMPERATURE 8.0 7.5 7.5 7.0 7.0 VDD = 1.8V VDD = 3V VDD = 1.8V 6.5 6.5 VDD = 3V tPHL (µs) tPLH (µs) VDD = 5V 6.0 5.5 6.0 5.5 VDD = 5V 5.0 5.0 VDD = 5V 4.5 4.5 4.0 4.0 –50 –25 0 25 50 75 100 –50 125 TLV3491, 3492, 3494 SBOS262C –25 0 25 50 75 100 125 Temperature (°C) Temperature (°C) www.ti.com 5 TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VS = +1.8V to +5.5V, and Input Overdrive = 100mV, unless otherwise noted. PROPAGATION DELAY (tPLH) PROPAGATION DELAY (tPHL) VDD = ±2.5V VIN+ 500mV/div 500mV/div VDD = ±2.5V VIN– VIN– VOUT 2V/div 2V/div VIN+ VOUT 2µs/div 2µs/div PROPAGATION DELAY (tPHL) PROPAGATION DELAY (tPLH) 500mV/div VDD = ±0.9V 500mV/div VDD = ±0.9V VIN+ VIN– VIN– 2V/div 2V/div VIN+ VOUT 2µs/div 2µs/div 6 VOUT TLV3491, 3492, 3494 www.ti.com SBOS262C APPLICATIONS INFORMATION The TLV349x family of comparators features rail-to-rail input and output on supply voltages as low as 1.8V. The push-pull output stage is optimal for reduced power budget applications and features no shoot-through current. Low supply voltages, common-mode input range beyond supply rails, and a typical supply current of 0.8µA make the TLV349x family an excellent candidate for battery-powered applications with single-cell operation. BOARD LAYOUT Figure 1 shows the typical connections for the TLV349x. To minimize supply noise, power supplies should be capacitively decoupled by a 0.01µF ceramic capacitor in parallel with a 10µF electrolytic capacitor. Comparators are very sensitive to input noise. Proper grounding (use of ground plane) and guarding of high-impedance nodes will help maintain specified performance of the TLV349x family. SETTING REFERENCE VOLTAGE It is important to use a stable reference when setting the transition point for the TLV349. The REF1004 provides a 1.25V reference voltage with low drift and only 8µA of quiescent current. EXTERNAL HYSTERESIS Comparator inputs have no noise immunity within the range of specified offset voltage (±15mV). For noisy input signals, the comparator output may display multiple switching as input signals move through the switching threshold. The typical comparator threshold of the TLV349x is ±15mV. To prevent multiple switching within the comparator threshold of the TLV349x, external hysteresis may be added by connecting a small amount of feedback to the positive input. Figure 2 shows a typical topology used to introduce hysteresis, described by the equation: VHYST = V + × R1 R1 + R 2 VHYST will set the value of the transition voltage required to switch the comparator output by increasing the threshold region, thereby reducing sensitivity to noise. V+ 0.01µF 10µF VIN TLV349x VOUT V+ VREF VHYST = 0.38V 5.0V VIN TLV349x VOUT R2 560kΩ FIGURE 1. Basic Connections of the TLV349x. R1 39kΩ VREF FIGURE 2. Adding Hysteresis to the TLV349x. TLV3491, 3492, 3494 SBOS262C www.ti.com 7 APPLICATIONS RELAXATION OSCILLATOR The TLV349x can be configured as a relaxation oscillator to provide a simple and inexpensive clock output (see Figure 3.) The capacitor is charged at a rate of 0.69RC. It also discharges at a rate of 0.69RC. Therefore, the period is 1.38RC. R1 may be a different value than R2. VC 2/3 (V+) 1/3 (V+) t V+ T1 T2 V+ C 1000pF R1 1MΩ VOUT R2 1MΩ R2 1MΩ a simple resistor divider. These resistor values should be relatively high to reduce the current consumption of the circuit. The positive input is an RC circuit that provides a power-up delay. When power is applied, the output of the comparator is low, holding the processor in the reset condition. Only after allowing time for the supply voltage to stabilize does the positive input of the comparator become higher than the negative input, resulting in a high output state, and releasing the processor for operation. The stabilization time required for the supply voltage is adjustable by the selection of the RC component values. Use of a lowervalued resistor in this portion of the circuit will not increase current consumption because no current flows through the RC circuit after the supply has stabilized. The reset delay time needed depends on the power-up characteristics of the system power supply. R1 and C1 are selected to allow enough time for the power supply to stabilize. D1 provides rapid reset if power is lost. In this example, the R1 • C1 time constant is 10mS. V+ t F = 724Hz V+ R1 1MΩ R2 1MΩ C1 10nF FIGURE 3. TLV349x Configured as a Relaxation Oscillator. POWER-ON RESET The reset circuit shown in Figure 4 provides a time delayed release of reset to the MSP430 microcontroller. Operation of the circuit is based on a stabilization time constant of the supply voltage, rather than on a predetermined voltage value. The negative input is a reference voltage created by 8 MSP430 R2 2MΩ TLV349x RESET R3 2MΩ FIGURE 4. The TLV349x Configured as a Reset Circuit for the MSP430. TLV3491, 3492, 3494 www.ti.com SBOS262C PACKAGE OPTION ADDENDUM www.ti.com 9-Dec-2004 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty Lead/Ball Finish MSL Peak Temp (3) TLV3491AID ACTIVE SOIC D 8 100 None CU SNPB Level-3-235C-168 HR TLV3491AIDBVR ACTIVE SOT-23 DBV 5 3000 None CU NIPDAU Level-3-250C-168 HR TLV3491AIDBVT ACTIVE SOT-23 DBV 5 250 None CU NIPDAU Level-3-250C-168 HR TLV3491AIDR ACTIVE SOIC D 8 2500 None CU SNPB Level-3-235C-168 HR TLV3492AID ACTIVE SOIC D 8 100 None CU SNPB Level-3-235C-168 HR TLV3492AIDCNR ACTIVE SOT23 DCN 8 3000 None CU SNPB Level-3-235C-168 HR TLV3492AIDCNT ACTIVE SOT23 DCN 8 250 None CU SNPB Level-3-235C-168 HR TLV3492AIDR ACTIVE SOIC D 8 2500 None CU SNPB Level-3-235C-168 HR TLV3494AID ACTIVE SOIC D 14 58 None CU SNPB Level-3-235C-168 HR TLV3494AIDR ACTIVE SOIC D 14 2500 None CU SNPB Level-3-235C-168 HR TLV3494AIPWR ACTIVE TSSOP PW 14 2500 None CU SNPB Level-3-235C-168 HR TLV3494AIPWT ACTIVE TSSOP PW 14 250 None CU SNPB Level-3-235C-168 HR (1) The marketing status values are defined as follows: 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 - May not be currently available - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. None: Not yet available Lead (Pb-Free). 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. Green (RoHS & no Sb/Br): TI defines "Green" to mean "Pb-Free" and in addition, uses package materials that do not contain halogens, including bromine (Br) or antimony (Sb) above 0.1% of total product weight. (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDECindustry 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 1 MECHANICAL DATA MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999 PW (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 14 PINS SHOWN 0,30 0,19 0,65 14 0,10 M 8 0,15 NOM 4,50 4,30 6,60 6,20 Gage Plane 0,25 1 7 0°– 8° A 0,75 0,50 Seating Plane 0,15 0,05 1,20 MAX PINS ** 0,10 8 14 16 20 24 28 A MAX 3,10 5,10 5,10 6,60 7,90 9,80 A MIN 2,90 4,90 4,90 6,40 7,70 9,60 DIM 4040064/F 01/97 NOTES: A. B. C. D. All linear dimensions are in millimeters. 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