TLV3491A-EP, TLV3492A-EP, TLV3494A-EP www.ti.com SGDS035 – DECEMBER 2007 1.8 V, NANOPOWER, PUSH/PULL OUTPUT COMPARATORS FEATURES APPLICATIONS • • • • • • • 1 Very Low Supply Current: 0.8 µA (Typical) Input Common Mode Range 200 mV Beyond Supply Rails Supply Voltage: 1.8 V to 5.5 V High Speed: 6 µs Push/Pull CMOS Output Stage Controlled Baseline – One Assembly/Test Site, One Fabrication Site Extended Temperature Performance of –55°C to 125°C Enhanced Diminishing Manufacturing Sources (DMS) Support Enhanced Product Change Notification Qualification Pedigree • • • • • • • • Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specified performance and environmental limits. Portable Medical Equipment Wireless Security Systems Remote Control Systems Handheld Instruments Ultra-Low Power Systems DESCRIPTION/ORDERING INFORMATION The TLV349x family of push/pull output comparators features a fast 6µs response time and <1.2 µA (max) nanopower capability, allowing operation from 1.8 V to 5.5 V. Input common-mode range beyond supply rails make the TLV349x an ideal choice for low-voltage applications. The TLV349x is excellent for low-voltage (2-cell) applications. power-sensitive, TLV349x RELATED PRODUCTS PRODUCT FEATURES TLV370x 550 nA, 2.5 V to 16 V, Push-Pull CMOS Output Stage Comparator TLV340x 550 nA, 2.5 V to 16 V, Open-Drain Output Stage Comparator ORDERING INFORMATION (1) PRODUCT PACKAGELEAD PACKAGE DESIGNATOR (2) SPECIFIED TEMPERATURE RANGE PACKAGE MARKING TLV3491 SO-8 D –55°C to 125°C 3491EP TLV3491AMDREP (3) Tape and Reel, 2500 TLV3492 SO-8 D –55°C to 125°C 3492EP TLV3492AMDREP Tape and Reel, 2500 TLV3494 SO-14 D –55°C to 125°C 3494EP TLV3494AMDREP (3) Tape and Reel, 2500 (1) (2) (3) ORDERABLE PART NUMBER TRANSPORT MEDIA, QUANTITY For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com. Package drawings, thermal data, and symbolization are available at www.ti.com/packaging. Prouct Preview. Contact your Texas Instruments Sales Representative for availability. 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. 1 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. UNLESS OTHERWISE NOTED this document contains PRODUCTION DATA information 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 © 2007, Texas Instruments Incorporated TLV3491A-EP, TLV3492A-EP, TLV3494A-EP www.ti.com SGDS035 – DECEMBER 2007 ABSOLUTE MAXIMUM RATINGS (1) Supply Voltage Signal Input Terminals VALUE UNIT 5.5 V Voltage (2) (V–) – 0.5 to (V+) + 0.5 V Current (2) ±10 mA Output Short-Circuit (3) Continuous Operating Temperature –55 to 125 °C Storage Temperature –65 to 150 °C Junction Temperature 150 °C Lead Temperature (soldering, 10s) 300 °C ESD Rating (Human Body Model) 3000 V (1) (2) (3) 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. Input terminals are diode clamped to the power-supply rails. Input signals that can swing more than 0.5 V beyond the supply rails should be current limited to 10 mA or less. Short-circuit to ground, one amplifier per package. PIN CONFIGURATIONS -In A -In D -In A -In TLV3492 -In B V- V- V- -In B 2 Submit Documentation Feedback -In C Copyright © 2007, Texas Instruments Incorporated Product Folder Link(s): TLV3491A-EP TLV3492A-EP TLV3494A-EP TLV3491A-EP, TLV3492A-EP, TLV3494A-EP www.ti.com SGDS035 – DECEMBER 2007 ELECTRICAL CHARACTERISTICS At TA = 25°C, and VS = 1.8 V to 5.5 V, unless otherwise noted. PARAMETER TEST CONDITIONS TA (1) MIN TYP MAX ±3 ±15 UNIT OFFSET VOLTAGE Input Offset Voltage vs Temperature vs Power Supply VOS VCM = 0V, IO = 0mA dVOS/dT TA = –55°C to 125°C PSRR VS = 1.8 V to 5.5 V Input Bias Current IB VCM = VCC/2 Input Offset Current IOS VCM = VCC/2 25°C Full Range ±25 µV/°C ±12 25°C 350 Full Range mV 1000 1600 µV/V INPUT BIAS CURRENT 25°C ±1 Full Range ±50 ±1600 25°C ±1 Full Range ±50 ±200 pA pA INPUT VOLTAGE RANGE Common-Mode Voltage Range VCM (V–) – 0.2 VCM = –0.2 V to (V+) – 1.5 V Common-Mode Rejection Ratio CMRR VCM = –0.2 V to (V+) + 0.2 V 25°C 60 Full Range 55 25°C 54 Full Range 50 (V+) + 0.2 V 74 dB 62 INPUT CAPACITANCE Common-Mode 2 pF Differential 4 pF 12 µs SWITCHING CHARACTERISTICS Propagation Delay Time, Low-to-High t(PLH) f = 10 kHz, VSTEP = 1 V Input Overdrive = 10 mV 6 µs Input Overdrive = 10 mV 13.5 µs Input Overdrive = 100 mV 6.5 µs Input Overdrive = 100 mV Propagation Delay Time, High-to-Low t(PHL) f = 10 kHz, VSTEP = 1 V Rise Time tR CL = 10 pF 100 ns Fall Time tF CL = 10 pF 100 ns Voltage Output High from Rail VOH VS = 5 V, IOUT = -5 mA Full Range 90 300 mV Voltage Output Low from Rail VOL VS = 5 V, IOUT = 5 mA Full Range 160 300 mV Short-Circuit Current ISC OUTPUT See Typical Characteristics POWER SUPPLY Specified Voltage Range Quiescent Current (2) VS IQ 1.8 Vs = 5.5 V, VO = High 25°C 5.5 0.85 Full Range 1.2 2.1 V µA TEMPERATURE RANGE Specified Range TA Storage Range –55 125 °C –65 150 °C Thermal Resistance, θJA (1) (2) SO-8 165 °C/W SO-14 133 °C/W Full Range is -55°C to 125°C. IQ per channel. Copyright © 2007, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TLV3491A-EP TLV3492A-EP TLV3494A-EP 3 TLV3491A-EP, TLV3492A-EP, TLV3494A-EP www.ti.com SGDS035 – DECEMBER 2007 TYPICAL CHARACTERISTICS At TA = 25°C, VS = 1.8 V to 5.5 V, and Input Overdrive = 100 mV, unless otherwise noted. QUIESCENT CURRENT vs TEMPERATURE QUIESCENT CURRENT vs OUTPUT SWITCHING FREQUENCY 1.00 VS = 5 V 10 0.90 VDD = 5 V 0.85 Quiescent Current (µA) Quiescent Current (µA) 12 VDD = 3 V 0.95 VDD = 1.8 V 0.80 0.75 0.70 0.65 8 6 4 VS = 3 V 2 0.60 –50 0 –25 25 50 75 100 VS = 1.8 V 0 125 1 Temperature ( °C) 10 100 1k 10k 100k Output Transition Frequency (Hz) SHORT-CIRCUIT CURRENT vs SUPPLY VOLTAGE INPUT BIAS CURRENT vs TEMPERATURE 140 45 40 Input Bias Current (pA) Short-Circuit Current (mA) 120 100 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 0 –25 Supply Voltage (V) 25 50 75 100 125 Temperature ( °C) OUTPUT LOW vs OUTPUT CURRENT OUTPUT HIGH vs OUTPUT CURRENT 0.25 0.25 VDD = 3 V 0.2 0.2 VDD = 1.8 V VDD = 3 V VS Ð VOH (V) VOL (V) VDD = 1.8 V 0.15 VDD = 5 V 0.1 0.05 0.1 VDD = 5 V 0.05 0 0 0 2 4 6 8 Output Current (mA) 4 0.15 Submit Documentation Feedback 10 12 0 2 4 6 8 10 12 Output Current (mA) Copyright © 2007, Texas Instruments Incorporated Product Folder Link(s): TLV3491A-EP TLV3492A-EP TLV3494A-EP TLV3491A-EP, TLV3492A-EP, TLV3494A-EP www.ti.com SGDS035 – DECEMBER 2007 TYPICAL CHARACTERISTICS (continued) At TA = 25°C, VS = 1.8 V to 5.5 V, and Input Overdrive = 100 mV, unless otherwise noted. PROPAGATION DELAY (t PLH) vs CAPACITIVE LOAD 80 70 70 60 60 50 50 tPHL (µs) tPLH (µs) PROPAGATION DELAY (t PHL) vs CAPACITIVE LOAD 80 VDD = 5 V 40 VDD = 3 V 30 VDD = 1.8 V 20 VDD = 3 V V = 5 V DD 40 30 20 10 10 0 0.01 0.1 1 10 100 VDD = 1.8 V 0 0.01 1k 0.1 1 Capacitive Load (nF) PROPAGATION DELAY (t PLH) vs INPUT OVERDRIVE 20 1k 18 16 16 VDD = 5 V 14 tPHL (µs) 14 tPLH (µs) 100 PROPAGATION DELAY (t PHL) vs INPUT OVERDRIVE 20 18 12 VDD = 3 V 10 VDD = 1.8 V 12 VDD = 1.8 V 10 8 8 6 6 4 4 0 10 20 30 40 50 60 70 80 90 100 VDD = 3 V VDD = 5 V 0 10 20 30 Input Overdrive (mV) 40 50 60 70 80 90 100 Input Overdrive (mV) PROPAGATION DELAY (t PLH) vs TEMPERATURE 8.0 PROPAGATION DELAY (t PHL) vs TEMPERATURE 8.0 7.5 7.5 7.0 VDD = 1.8 V 7.0 VDD = 3 V VDD = 1.8 V 6.5 6.5 VDD = 3 V tPHL (µs) tPLH (µs) 10 Capacitive Load (nF) 6.0 5.5 6.0 5.5 VDD = 5 V 5.0 5.0 VDD = 5 V 4.5 4.5 4.0 4.0 –50 –25 0 25 50 Temperature ( °C) Copyright © 2007, Texas Instruments Incorporated 75 100 125 –50 –25 0 25 50 75 100 125 Temperature (° C) Submit Documentation Feedback Product Folder Link(s): TLV3491A-EP TLV3492A-EP TLV3494A-EP 5 TLV3491A-EP, TLV3492A-EP, TLV3494A-EP www.ti.com SGDS035 – DECEMBER 2007 TYPICAL CHARACTERISTICS (continued) At TA = 25°C, VS = 1.8 V to 5.5 V, and Input Overdrive = 100 mV, unless otherwise noted. PROPAGATION DELAY (t PHL) VDD = ±2.5 V VIN– VDD = ±2.5 V VIN+ 500 mV/div 500 mV/div PROPAGATION DELAY (t PLH) VIN– VIN+ 2V/div VOUT 2 µs/div 2 µs/div PROPAGATION DELAY (t PLH) PROPAGATION DELAY (t PHL) VIN+ VDD = ±0.9 V 500 mV/div 500 mV/div 2V/div VOUT VIN– VDD = ±0.9 V VIN– 2V/div 2V/div VIN+ VOUT 2 µs/div 6 Submit Documentation Feedback VOUT 2 µs/div Copyright © 2007, Texas Instruments Incorporated Product Folder Link(s): TLV3491A-EP TLV3492A-EP TLV3494A-EP TLV3491A-EP, TLV3492A-EP, TLV3494A-EP www.ti.com SGDS035 – DECEMBER 2007 APPLICATION INFORMATION The TLV349x family of comparators features rail-to-rail input and output on supply voltages as low as 1.8 V. 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 0.8 µA 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 0.01 µF ceramic capacitor in parallel with a 10 µF electrolytic capacitor. Comparators are very sensitive to input noise. Proper grounding (use of ground plane) will help maintain specified performance of the TLV349x family. V+ 0.01 µF 10 µF VIN VOUT TLV3492 VREF Figure 1. Basic Connections of the TLV3492 SETTING REFERENCE VOLTAGE It is important to use a stable reference when setting the transition point for the TLV349x. The REF1004 provides a 1.25-V reference voltage with low drift and only 8 µA of quiescent current. EXTERNAL HYSTERESIS Comparator inputs have no noise immunity within the range of specified offset voltage (±15 mV). 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 ±15 mV. 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 + R2 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+ VHYST = 0.38 V 5V VIN TLV3492 VOUT R2 560 kΩ R1 39 kΩ VREF Figure 2. Adding Hysteresis to the TLV3492 Copyright © 2007, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TLV3491A-EP TLV3492A-EP TLV3494A-EP 7 TLV3491A-EP, TLV3492A-EP, TLV3494A-EP www.ti.com SGDS035 – DECEMBER 2007 RELAXATION OSCILLATOR The TLV3492 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 0.69 RC. It also discharges at a rate of 0.69 RC. Therefore, the period is 1.38 RC. R1 may be a different value than R2. VC 2/3 (V+) 1/3 (V+) t V+ T1 T2 V+ C 1000 pF R1 1 MΩ VOUT R2 1 MΩ R2 1 MΩ t F = 724 Hz V+ R2 1 MΩ Figure 3. TLV3492 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 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 lower-valued 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 10 ms. V+ R1 1 MΩ C1 10 nF MSP430 R2 2 MΩ TLV3492 RESET R3 2 MΩ Figure 4. The TLV349x Configured as a Reset Circuit for the MSP430. 8 Submit Documentation Feedback Copyright © 2007, Texas Instruments Incorporated Product Folder Link(s): TLV3491A-EP TLV3492A-EP TLV3494A-EP PACKAGE OPTION ADDENDUM www.ti.com 18-Jan-2008 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty TLV3492AMDREP ACTIVE SOIC D 8 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM V62/07635-01XE ACTIVE SOIC D 8 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM Lead/Ball Finish MSL Peak Temp (3) (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 - 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. 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Addendum-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 22-Aug-2008 TAPE AND REEL INFORMATION *All dimensions are nominal Device TLV3492AMDREP Package Package Pins Type Drawing SOIC D 8 SPQ Reel Reel Diameter Width (mm) W1 (mm) 2500 330.0 12.4 Pack Materials-Page 1 A0 (mm) B0 (mm) K0 (mm) P1 (mm) 6.4 5.2 2.1 8.0 W Pin1 (mm) Quadrant 12.0 Q1 PACKAGE MATERIALS INFORMATION www.ti.com 22-Aug-2008 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TLV3492AMDREP SOIC D 8 2500 340.5 338.1 20.6 Pack Materials-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. 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