SLCS148 SEPTEMBER 2005 Qualified Automotive Applications Customer

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SLCS148 SEPTEMBER 2005 Qualified Automotive Applications Customer

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LP2901-Q1 LOW-POWER QUAD DIFFERENTIAL COMPARATOR
SLCS148 SEPTEMBER 2005
Qualified Automotive Applications Customer-Specific Configuration Control Supported Along With Major-Change Approval Wide Supply-Voltage Range Ultra-Low Power-Supply Current Drain Input Biasing Current Input Offset Current ±0.5 Input Offset Voltage Common-Mode Input Voltage Includes Ground Output Voltage Compatible With CMOS Logic High Output Sink-Current Capability Power-Supply Input Reverse Voltage Protected Single Power-Supply Operation Pin-for-Pin Compatible With LM239, LM339, LM2901
PACKAGE (TOP VIEW)
1OUT 2OUT
3OUT 4OUT
DESCRIPTION/ORDERING INFORMATION
LP2901 low-power quadruple differential comparator. device consists four independent voltage comparators designed specifically operate from single power supply and, typically, draw 60-µA drain current over wide range voltages. Operation from split power supplies also possible, ultra-low power-supply drain current independent power-supply voltage. Applications include limit comparators, simple analog-to-digital converters, pulse generators, square-wave generators, time-delay generators, voltage-controlled oscillators, multivibrators, high-voltage logic gates. LP2901 designed specifically interface with CMOS logic family. ultra-low power-supply current makes these products desirable battery-powered applications. LP2901 characterized operation from -40°C 85°C. ORDERING INFORMATION
-40°C 85°C VIOMAX 25°C PACKAGE SOIC Reel 2500 ORDERABLE PART NUMBER LP2901IDRQ1 TOP-SIDE MARKING LP2901IQ1
Package drawings, standard packing quantities, thermal data, symbolization, design guidelines available www.ti.com/sc/package.
Please aware that important notice concerning availability, standard warranty, critical applications Texas Instruments semiconductor products disclaimers thereto appears this data sheet.
PRODUCTION DATA information current publication date. Products conform specifications terms Texas Instruments standard warranty. Production processing does necessarily include testing parameters.
Copyright 2005, Texas Instruments Incorporated
LP2901-Q1 LOW-POWER QUAD DIFFERENTIAL COMPARATOR
SLCS148 SEPTEMBER 2005
SCHEMATIC DIAGRAM (EACH COMPARATOR)
Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)
Supply voltage Differential input voltage range Input voltage range (either input) Input current Duration output short-circuit ground Continuous total power dissipation Tlead Tstg Package thermal impedance Operating free-air temperature range Operating virtual junction temperature Lead temperature range Storage temperature range (1/16 from case -0.3 -0.3 Unlimited Dissipation Rating Table 133.5 °C/W UNIT
Stresses beyond those listed under "absolute maximum ratings" cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated under "recommended operating conditions" implied. Exposure absolute-maximum-rated conditions extended periods affect device reliability. voltage values, except differential voltages, with respect network ground. Differential voltages with respect IN-. This input current exists only when voltage inputs driven negative. current flows through collector-base junction input clamping device. addition clamping device action, there lateral n-p-n parasitic transistor action. This action destructive, normal output states reestablished when input voltage returns value more positive than -0.3 25°C. Short circuits between outputs cause excessive heating eventual destruction. output transistors allowed saturate, low-bias dissipation on-off characteristics outputs keep dissipation very small (usually less than mW). Maximum power dissipation function TJ(max), maximum allowable power dissipation allowable ambient temperature (TJ(max) TA)/JA. Operating absolute maximum 150°C impact reliability. package thermal impedance calculated accordance with JESD (low-K board).
Dissipation Ratings
PACKAGE 25°C POWER RATING DERATING FACTOR ABOVE 25°C 7.49 mW/°C 70°C POWER RATING 85°C POWER RATING
LP2901-Q1 LOW-POWER QUAD DIFFERENTIAL COMPARATOR
SLCS148 SEPTEMBER 2005
Recommended Operating Conditions
Supply voltage Common-mode input voltage Input voltage Operating free-air temperature UNIT
Electrical Characteristics
25°C (unless otherwise noted)
PARAMETER VICR Input offset voltage Input offset current Input bias current Common-mode input voltage range Large-signal differential voltage amplification Output sink current Single supply 25°C Full range 25°C 25°C Full range TEST CONDITIONS (2), 25°C Full range 25°C Full range 25°C Full range 25°C Full range ±0.5 -2.5 UNIT V/mV
Output leakage current Differential input voltage Supply current
VCC- split supplies) comparators
Full range -40°C 125°C. measured over full common-mode input voltage range. Because p-n-p input stage, direction current device. This current essentially constant (i.e., independent output state). loading change exists reference input lines long common-mode input voltage range exceeded. output sink current function output voltage. These devices have bimodal output section that allows them sink (via Darlington connection) large currents output voltages greater than smaller currents output voltages less than
Switching Characteristics
25°C, connected through
PARAMETER Large-signal response time Response time TEST CONDITIONS logic swing, Vref UNIT
LP2901-Q1 LOW-POWER QUAD DIFFERENTIAL COMPARATOR
SLCS148 SEPTEMBER 2005
APPLICATION INFORMATION
Figure shows basic configuration using LP2901 comparator. Figure shows diagram using CMOS driver.
LP2901
Figure Basic Comparator
LP2901
SN54/74LS00 SN54/74ALS1000A
Figure CMOS Driver pins unused comparators should grounded. bias network LP2901 establishes drain current that independent magnitude power-supply voltage over range usually necessary bypass capacitor across power-supply line. differential input voltage larger than without damaging device. Protection should provided prevent input voltages from going negative more than -0.3 output section distinct modes operation, Darlington mode ground-emitter mode. This unique drive circuit permits device sink Darlington mode ground-emitter mode. Figure simplified schematic diagram output section. output section configured Darlington connection (ignoring Q3). output voltage held high enough (above saturated output current limited only product saturation resistance devices capable driving LEDs, relays, etc. this mode while maintaining ultra-low power-supply current typical.
Figure Output-Section Schematic Diagram
LP2901-Q1 LOW-POWER QUAD DIFFERENTIAL COMPARATOR
SLCS148 SEPTEMBER 2005
Without transistor output voltage were allowed drop below transistor would saturate, output current would drop zero. circuit would unable pull current loads down ground negative supply, used. Transistor been included bypass transistor under these conditions apply current directly base output sink current approximately times (700 output devices exhibits bimodal characteristic, with smooth transition between modes. both cases, output uncommitted collector. Several outputs tied together provide logic function. output pullup resistor connected available power-supply voltage within permitted power-supply range, there restriction this voltage, based magnitude voltage that supplied package.
PACKAGE OPTION ADDENDUM
12-Sep-2006
PACKAGING INFORMATION
Orderable Device LP2901IDRQ1
Status ACTIVE
Package Type SOIC
Package Drawing
Pins Package Plan 2500 Pb-Free (RoHS)
Lead/Ball Finish NIPDAU
Peak Temp Level-2-250C-1 YEAR/ Level-1-235C-UNLIM
marketing status values defined follows: ACTIVE: Product device recommended designs. LIFEBUY: announced that device will discontinued, lifetime-buy period effect. NRND: recommended designs. Device production support existing customers, does recommend using this part design. PREVIEW: Device been announced production. Samples available. OBSOLETE: discontinued production device.
Plan planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), Green (RoHS Sb/Br) please check latest availability information additional product content details. TBD: Pb-Free/Green conversion plan been defined. Pb-Free (RoHS): TI's terms "Lead-Free" "Pb-Free" mean semiconductor products that compatible with current RoHS requirements substances, including requirement that lead exceed 0.1% weight homogeneous materials. Where designed soldered high temperatures, Pb-Free products suitable specified lead-free processes. Pb-Free (RoHS Exempt): This component RoHS exemption either lead-based flip-chip solder bumps used between package, lead-based adhesive used between leadframe. component otherwise considered Pb-Free (RoHS compatible) defined above. Green (RoHS Sb/Br): defines "Green" mean Pb-Free (RoHS compatible), free Bromine (Br) Antimony (Sb) based flame retardants exceed 0.1% weight homogeneous material)
MSL, Peak Temp. Moisture Sensitivity Level rating according JEDEC industry standard classifications, peak solder temperature. Important Information Disclaimer:The information provided this page represents TI's knowledge belief date that provided. bases knowledge belief information provided third parties, makes representation warranty accuracy such information. Efforts underway better integrate information from third parties. taken continues take reasonable steps provide representative accurate information have conducted destructive testing chemical analysis incoming materials chemicals. suppliers consider certain information proprietary, thus numbers other limited information available release. event shall TI's liability arising such information exceed total purchase price part(s) issue this document sold Customer annual basis.
Addendum-Page
IMPORTANT NOTICE Texas Instruments Incorporated subsidiaries (TI) reserve right make corrections, modifications, enhancements, improvements, other changes products services time discontinue product service without notice. Customers should obtain latest relevant information before placing orders should verify that such information current complete. products sold subject TI's terms conditions sale supplied time order acknowledgment. warrants performance hardware products specifications applicable time sale accordance with TI's standard warranty. Testing other quality control techniques used extent deems necessary support this warranty. Except where mandated government requirements, testing parameters each product necessarily performed. assumes liability applications assistance customer product design. Customers responsible their products applications using components. minimize risks associated with customer products applications, customers should provide adequate design operating safeguards. does warrant represent that license, either express implied, granted under patent right, copyright, mask work right, other intellectual property right relating combination, machine, process which products services used. Information published regarding third-party products services does constitute license from such products services warranty endorsement thereof. such information require license from third party under patents other intellectual property third party, license from under patents other intellectual property Reproduction information data books data sheets permissible only reproduction without alteration accompanied associated warranties, conditions, limitations, notices. Reproduction this information with alteration unfair deceptive business practice. responsible liable such altered documentation. Resale products services with statements different from beyond parameters stated that product service voids express implied warranties associated product service unfair deceptive business practice. responsible liable such statements. Following URLs where obtain information other Texas Instruments products application solutions: Products Amplifiers Data Converters Interface Logic Power Mgmt Microcontrollers amplifier.ti.com dataconverter.ti.com dsp.ti.com interface.ti.com logic.ti.com power.ti.com microcontroller.ti.com Applications Audio Automotive Broadband Digital Control Military Optical Networking Security Telephony Video Imaging Wireless Mailing Address: Texas Instruments Post Office 655303 Dallas, Texas 75265 Copyright 2006, Texas Instruments Incorporated www.ti.com/audio www.ti.com/automotive www.ti.com/broadband www.ti.com/digitalcontrol www.ti.com/military www.ti.com/opticalnetwork www.ti.com/security www.ti.com/telephony www.ti.com/video www.ti.com/wireless
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SLCS148 SEPTEMBER 2005 Qualified Automotive Applications Customer

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