LT1716IS5#TRPBF

LT1716 SOT-23, 44V, Over-the-Top, Micropower, Precision Rail-to-Rail Comparator FEATURES DESCRIPTION Operates from 2.7V to 44V n Over-The-Top®: Input Common Mode Range Extends 44V Above V–, Independent of V+ n Micropower: 35µA I Q n Offset Voltage: 1.5mV Max n Valid Output with Either Input 5V Below V– n Rail-to-Rail Output Swing n Output Can Drive Loads Above V+ n Internal Pull-Up Current n –40°C to 125°C Operating Temperature Range n Low Profile (1mm) SOT-23 (ThinSOT™) Package n AEC-Q100 Qualified for Automotive Applications The LT®1716 comparator operates on any total power supply voltage between 2.7V and 44V drawing 35µA of quiescent current. The LT1716 has a unique input stage that can be taken 44V above V–, independent of V+ supply. (Built-in resistors protect the inputs for faults below the negative supply of up to 5V.) The inputs can withstand 44V both differential and common mode. n APPLICATIONS Power Supply Monitors Relay/Lamp Driver n Oscillators n Peak Detector n Level Shifting n n The output stage includes a class “B” pull-up current source, eliminating the need for an external resistive pull-up and saving power. Output voltage swings to within 35mV of the negative supply and 55mV of the positive supply, which makes the comparator a good choice for low voltage single supply operation. The output stage is also designed to drive loads connected to a higher supply than the LT1716 supply, the same as an open collector output stage. The LT1716 is available in a SOT-23 5-lead package. All registered trademarks and trademarks are the property of their respective owners. TYPICAL APPLICATION Lamp Monitor 5V TO 44V 100k 5k 1M 4 3 – 0.04 IL + VS = 5V, 0V 4µ 6n INPUT BELOW SUPPLY INPUT ABOVE SUPPLY +IN = 10V 3n 5 LT1716 RS ≥ 8µ CMPD6001 RS 0.15Ω 1W 0.25A TO 2.5A 12µ 3V 0.1µF 1 LAMP GOOD IB– (A) LAMP ON/OFF Input Bias Current vs Input Bias Voltage 0 –3n +IN = 2V +IN = 2V –6n 2 1716 TA01 –100m –0.5m –1m –1.5m –10 –5 0 5 10 VIN– (V) 15 20 45 1716 TA02 Rev. B Document Feedback For more information www.analog.com 1 LT1716 ABSOLUTE MAXIMUM RATINGS (Note 1) PIN CONFIGURATION Supply Voltage (V+ to V–)..........................................44V Differential Input Voltage...........................................44V Input Voltage......................................................44V, –5V Output Short-Circuit Duration (Note 2)............. Indefinite Operating Temperature Range (Note 3) LT1716C/LT1716I................................. –40°C to 85°C LT1716H............................................. –40°C to 125°C Specified Temperature Range (Note 4) LT1716C/LT1716I................................. –40°C to 85°C LT1716H............................................. –40°C to 125°C Maximum Junction Temperature........................... 150°C Storage Temperature Range................... –65°C to 150°C Lead Temperature (Soldering, 10 sec).................... 300°C TOP VIEW 5 V+ OUT 1 V– 2 +IN 3 + – 4 –IN S5 PACKAGE 5-LEAD PLASTIC TSOT-23 TJMAX = 150°C, θJA = 250°C/W ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE LT1716CS5#PBF LT1716CS5#TRPBF LTYD 5-Lead Plastic TSOT-23 –40°C to 85°C LT1716IS5#PBF LT1716IS5#TRPBF LTYD 5-Lead Plastic TSOT-23 –40°C to 85°C LT1716HS5#PBF LT1716HS5#TRPBF LTYD 5-Lead Plastic TSOT-23 –40°C to 125°C LT1716HS5#WTRPBF LTYD 5-Lead Plastic TSOT-23 –40°C to 125°C AUTOMOTIVE PRODUCTS** LT1716HS5#WPBF Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix. **Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These models are designated with a #W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for these models. Rev. B 2 For more information www.analog.com LT1716 ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating + – temperature range of –40°C ≤ TA ≤ 85°C, otherwise specifications are at TA = 25°C. Single supply operation V = 5V, V = 0V; VCM = V+/2 unless otherwise noted. (Note 4) SYMBOL PARAMETER CONDITIONS VOS Input Offset Voltage 0.5V < VCM < (VCC – 1V) 0°C < TA < 70°C –40°C < TA < 85°C 0°C < TA < 70°C –40°C < TA < 85°C VCM = V+/2 VCM = 0V VCM = 44V VCM = V+/2 Input Offset Voltage Drift (Note 5) IOS Input Offset Current IB Input Bias Current LTC1716C/LT1716I MIN TYP MAX 300 l l 2 2 3 l l l l l 20 35 2 3 6 1 l V+ = 0V, VCM = 44V VCM = 0V VCM = 44V VCM = –5V CMRR Input Voltage Range (Note 7) Common Mode Rejection Ratio l l l l < (V+ – 1V) 0.5V ≤ VCM 0.5V ≤ VCM < 44V (Note 6) l l 0.5 89 81 1600 2100 2500 15 1.3 0.9 50 75 13 9 1.4 44 110 110 UNITS µV µV µV µV/°C µV/°C nA µA µA nA nA nA µA µA mA V dB dB The l denotes the specifications which apply over the full operating temperature range of –40°C ≤ TA ≤ 85°C, otherwise specifications are at TA = 25°C. Single supply operation V+ = 5V, V– = 0V; VCM = V+/2 unless otherwise noted. (Note 4) SYMBOL PSRR AVOL PARAMETER CONDITIONS Power Supply Rejection Ratio Minimum Operating Supply Voltage Large-Signal Voltage Gain V– = 0V, V CM = 1.5V; 2.7V < V+ < 36V LTC1716C/LT1716I MIN TYP MAX l RL = 1k; 1V < VOUT < 4V l IS Supply Current 95 l 200 100 V+ = 3V, RL = Open, VO = High 110 2.4 500 35 l V+ = 5V, RL = Open, VO = High 35 l V+ = 12V, RL = Open, VO = High 40 l ISC– ISC+ VOL Output Sink Current (Note 2) Output Source Current Output Voltage Swing Low (Referred to V–) VOH Output Voltage Swing High (Referred to V+) Leakage Current Propagation Delay VOVERDRIVE > 30mV VOVERDRIVE = 5mV, VOUT = 1V ISINK = 0mA, VOVERDRIVE = –10mV ISINK = 0.1mA ISINK = 1mA ISINK = 5mA ISOURCE = 0µA, VOVERDRIVE = 10mV ISOURCE = 10µA VOUT = 40V, VOVERDRIVE > 100mV VOVERDRIVE > 100mV, RLOAD = 10k l l l l l l l l l 10 60 20 85 20 75 200 550 30 130 0.5 3 2.7 50 65 55 75 60 85 35 110 300 900 55 185 2 5.5 UNITS dB V V/mV V/mV µA µA µA µA µA µA mA µA mV mV mV mV mV mV µA µs Rev. B For more information www.analog.com 3 LT1716 ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range of –40°C ≤ TA ≤ 85°C, otherwise specifications are at TA = 25°C. Split supply operation VS = ±15V, VCM = 0V unless otherwise noted. (Note 4) SYMBOL PARAMETER CONDITIONS VOS Input Offset Voltage –14.5V < VCM < 14V 0°C < TA < 70°C –40°C < TA < 85°C 0°C < TA < 70°C –40°C < TA < 85°C VCM = 0V VCM = 29V VCM = –15V VCM = 0V Input Offset Voltage Drift (Note 5) IOS Input Offset Current IB Input Bias Current LT1716C/LT1716I MIN TYP MAX 300 l l 2 2 3 l l l l l 30 50 6 3 1 l VCM = 29V VCM = –15V VCM = –20V CMRR PSRR Input Voltage Range (Note 7) Common Mode Rejection Ratio AVOL Power Supply Rejection Ratio Minimum Operating Supply Voltage Large-Signal Voltage Gain IS ISC– ISC+ Supply Current Output Sink Current (Note 2) Output Source Current l l l l –14.5V < VCM < 14V –14.5V < VCM < 29V (Note 6) VS = ±1.35V to ±22V l l l –14.5 92 81 90 l RL = 6k; –14V < VOUT < 14V l VS = ±15V, RL = Open, VO = High VOVERDRIVE > 30mV VOVERDRIVE = 5mV, VOUT = –14V 500 400 l l l 10 70 110 98 110 2.4 1000 40 20 105 1500 2000 2400 15 0.9 1.3 60 100 9 13 1.4 14 2.7 95 UNITS µV µV µV µV/°C µV/°C nA µA µA nA nA µA µA mA V dB dB dB V V/mV V/mV µA mA µA The l denotes the specifications which apply over the full operating temperature range of –40°C ≤ TA ≤ 85°C, otherwise specifications are at TA = 25°C. Split supply operation VS = ±15V, VCM = 0V unless otherwise noted. (Note 4) SYMBOL PARAMETER CONDITIONS VOL Output Voltage Swing Low (Referred to V–) VOH Output Voltage Swing High (Referred to V+) Leakage Current Propagation Delay ISINK = 0mA, VOVERDRIVE = –10mV ISINK = 0.1mA ISINK = 1mA ISINK = 5mA ISOURCE = 0µA, VOVERDRIVE = 10mV ISOURCE = 10µA VOUT = 25V, VOVERDRIVE > 100mV VOVERDRIVE > 100mV, RLOAD = 10k LT1716C/LT1716I MIN TYP MAX l l l l l l l 20 75 200 550 45 140 0.6 5.5 35 110 300 900 75 210 2 9 UNITS mV mV mV mV mV mV µA µs Rev. B 4 For more information www.analog.com LT1716 ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating + – temperature range of –40°C < TA < 125°C, otherwise specifications are at TA = 25°C. Single supply operation V = 5V, V = 0V; VCM = VCC/2 unless otherwise noted. (Note 4) SYMBOL PARAMETER CONDITIONS VOS Input Offset Voltage 0.5V < VCM < (VCC – 1V) MIN LT1716H TYP 300 l IOS Input Offset Voltage Drift (Note 5) Input Offset Current IB Input Bias Current 2 3 l = V+/2 VCM VCM = 0V VCM = 44V VCM = V+/2 l l l 20 l V+ = 0V, VCM = 44V VCM = 0V VCM = 44V VCM = –5V CMRR PSRR AVOL IS Input Voltage Range (Note 7) Common Mode Rejection Ratio Power Supply Rejection Ratio Minimum Operating Supply Voltage Large-Signal Voltage Gain Supply Current per Amplifier 0.5V < VCM < (V+ – 1V) 0.5V < VCM < 44V (Note 6) V– = 0V, VCM = 1.5V, 2.7V < V+ < 36V 2 3 6 1 l l l l l l 0.5 75 72 85 l RL = 1k, 1V < VOUT < 4V RL = 6k V+ = 3V, RL = Open, VO = High l 200 20 110 110 110 2.4 500 35 l V+ = 5V, RL = Open, VO = High 35 l V+ = 12V, RL = Open, VO = High 40 l ISC– ISC+ VOL Output Sink Current (Note 2) Output Source Current Output Voltage Swing Low (Referred to V–) VOH Output Voltage Swing High (Referred to V+) Leakage Current Propagation Delay VOVERDRIVE > 30mV VOVERDRIVE = 5mV, VOUT = 1V ISINK = 0mA, VOVERDRIVE = –10mV ISINK = 0.1mA ISINK = 1mA ISINK = 5mA ISOURCE = 0µA, VOVERDRIVE = –10mV ISOURCE = 10µA VOUT = 40V, VOVERDRIVE > 100mV VOVERDRIVE > 100mV, RLOAD = 10k l l l l l l l l l 5 60 10 110 20 75 200 550 50 130 1.7 6 MAX UNITS 1600 2900 µV µV µV/°C nA µA µA nA nA nA µA µA mA V dB dB dB V V/mV V/mV µA µA µA µA µA µA mA µA mV mV mV mV mV mV µA µs 220 1.3 0.9 50 900 25 14 1.4 44 2.7 50 70 55 75 60 85 60 170 480 1200 110 220 5 9 Rev. B For more information www.analog.com 5 LT1716 ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range of –40°C < TA < 125°C, otherwise specifications are at TA = 25°C. Split supply operation VS = ±15V, VCM = 0V unless otherwise noted. (Note 4) SYMBOL PARAMETER CONDITIONS MIN VOS Input Offset Voltage –14.5V < VCM < 14V LT1716H TYP 300 l Input Offset Voltage Drift (Note 5) IOS Input Offset Current VCM = 0V VCM = 29V VCM = –15V IB Input Bias Current VCM = 0V VCM = 29V VCM = –15V VCM = –20V Input Voltage Range (Note 7) MAX UNITS 1500 2900 µV µV l 2 l l l 3 280 0.9 1.3 nA µA µA l 30 50 60 1400 nA nA l l l 6 3 1 20 30 1.4 µA µA mA 14 V l –14.5 µV/°C CMRR Common Mode Rejection Ratio –14.5V < VCM < 14V –14.5V < VCM < 29V (Note 6) l l 85 70 110 93 dB dB PSRR Power Supply Rejection Ratio VS = ±1.35V to ±22V l 80 110 dB 500 50 1000 Minimum Operating Supply Voltage 2.4 l 2.7 V AVOL Large-Signal Voltage Gain RL = 6k; –14V < VOUT < 14V RL = 6k; –13V < VOUT < 13V IS Supply Current VS = ±15V, RL = Open, VO = High ISC– ISC+ Output Sink Current (Note 2) VOVERDRIVE > 30mV l 5 10 Output Source Current VOVERDRIVE = 5mV, VOUT = –14V l 70 155 VOL Output Voltage Swing Low (Referred to V–) ISINK = 0mA, VOVERDRIVE = –10mV ISINK = 0.1mA ISINK = 1mA ISINK = 5mA l l l l 20 75 200 550 70 170 480 1200 mV mV mV mV VOH Output Voltage Swing High (Referred to V+) ISOURCE = 0µA, VOVERDRIVE = 10mV ISOURCE = 10µA l l 45 140 120 250 mV mV Leakage Current VOUT = 25V, VOVERDRIVE > 100mV l 1.5 5 µA Propagation Delay VOVERDRIVE > 100mV, RLOAD = 10k 5.5 10 µs Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: A heat sink may be required to keep the junction temperature below absolute maximum. Note 3: The LT1716C/LT1716I are guaranteed functional over the operating temperature range of –40°C to 85°C. The LT1716H is guaranteed functional over the operating temperature range of –40°C to 125°C. l 40 V/mV V/mV 95 µA mA µA Note 4: The LT1716C is guaranteed to meet specified performance from 0°C to 70°C. The LT1716C is designed, characterized and expected to meet performance from –40°C to 85° but is not tested or QA sampled at the temperatures. The LT1716I is guaranteed to meet specified performance from –40°C to 85°C. The LT1716H is guaranteed to meet specified performance from –40°C to 125°C. Note 5: This parameter is not 100% tested. Note 6: Typical input offset voltage of 500µV at VCM = 44V above V– and a maximum input offset voltage of 4mV at VCM = 44V above V–. Note 7: If one input is within this input range, the other input can go 5V below V– and the output will be valid. Rev. B 6 For more information www.analog.com LT1716 TYPICAL PERFORMANCE CHARACTERISTICS Input Bias Current vs Common Mode Voltage 1.0000 INPUT BIAS CURRENT (µA) 25°C 6 IBIAS (µA) V+ = 15V – = –15V 0.1000 8 85°C –55°C 4 2 125°C 0 –2 1 5 10 15 VCM (V) 20 25 0.0100 CURRENT OUT OF PIN 0.0010 30 CURRENT OUT OF PIN –0.0100 –50 –25 0 VOL AT 85°C 1.2 VOL AT 25°C 0.8 VOL AT –55°C 0.4 0 V+ = 5V V– = 0V 0 2 OUTPUT HIGH VOLTAGE (RELATIVE TO V+) (V) OUTPUT VOLTAGE (RELATIVE TO GND) (V) VOL AT 125°C 5.0 Input Bias Current with Inputs Driven Above the Supply 8 VOH AT –55°C 6 VOH AT 85°C, 125°C VOH AT 25°C 4.7 4.5 90 0 5 SUPPLY CURRENT (µA) IBIAS (µA) –1200 –2 10 15 20 25 30 35 40 45 50 LOADING SOURCE CURRENT (µA) INPUTS EXCEED SUPPLY 5 0 10 15 20 25 30 35 40 45 50 VCM (V) 1716 G06 Positive Supply Current vs Output Sinking Current 1000 V+ = 5V V– = 0V 70 60 OUTPUT LOW 50 40 OUTPUT HIGH 30 20 –1000 –55°C 25°C 0 80 –800 85°C 2 4.6 100 –600 125°C 4 Supply Current vs Temperature –55°C < TA < 125°C V+ = 5V V– = 0V 1716 G05 V+ = 2.7V TO 44V V– = 0V –400 10 V+ = 5V V– = 0V 4.8 4 6 8 10 12 14 16 18 20 LOADING SINK CURRENT (mA) –200 TRANSITION REGION 1716 G03 Output High Voltage vs Source Current 4.9 Input Bias Current with Inputs Driven Below the Supply 0 –2 –4 –0.2 –0.15 –0.1 –0.05 0 0.05 0.1 0.15 0.2 DIFFERENTIAL INPUT VOLTAGE (V) 25 50 75 100 125 150 TEMPERATURE (°C) 1716 G04 200 +IN 1716 G02 Output Low Voltage vs Sink Current 1.6 –IN –1 –3 1716 G01 2.0 V+ = 15V V– = –15V 0 V+ = 5V V– = 0V VCM = 2.5V 0.0000 –0.0010 INPUTS EXCEED SUPPLY 0 V VCM = 0V IBIAS CURRENT (nA) 125°C IBIAS (µA) VS = ±15V Input Bias Current vs Differential Input Voltage POSITIVE SUPPLY CURRENT (µA) 10 Input Bias Current vs Temperature TA = 25°C VS = ±15V VS = 5V 100 10 –5 –4 –3 –2 VCM (V) –1 0 0 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) 1716 G07 1716 G08 10 0.1 1 10 OUTPUT SINK CURRENT (mA) 100 1716 G09 Rev. B For more information www.analog.com 7 LT1716 TYPICAL PERFORMANCE CHARACTERISTICS Output Leakage Current vs Output Voltage 0.6 V+ = 5V V– = 0V TA = 25°C 30 TA = 25°C 400 350 300 0.4 0.3 0.2 0.1 250 5 10 15 20 25 30 35 OUTPUT VOLTAGE (V) 40 0 45 5 0 10 15 20 REVERSE VOLTAGE (V) Output Sinking Current vs Total Supply Voltage TOTAL SWITCHING TIME (µs) OUTPUT SINKING LIMIT (mA) 100 20 15 10 5 0 1 10 TOTAL SUPPLY VOLTAGE (V) VS = ±15V RISE 10 1 –50 –25 100 TOTAL SWITCHING TIME (µs) TOTAL SWITCHING TIME (µs) FALL 10 20 30 TOTAL SUPPLY VOLTAGE (V) 40 0 25 50 75 100 125 150 TEMPERATURE (°C) 1716 G11 0 VS = ±2.5V RISE 100 ±15V FALL TIME 10 ±15V RISE TIME ±2.5V FALL TIME 1 25 50 75 100 125 150 TEMPERATURE (°C) RL = 10k VOUT = 90% VFINAL (RISE) VOUT = 10% VFINAL (FALL) VSTEP = 100mV TA = 25°C ±2.5V RISE TIME 0 10 20 30 40 50 60 70 80 90 100 OVERDRIVE (mV) 1716 G14 1716 G13 100 RL = 10k VOUT = 90% VFINAL (RISE) VOUT = 10% VFINAL (FALL) VCM = 1/2 VTOTALSUPPLY VSTEP = 100mV VOVERDRIVE = 10mV 0 0 –50 –25 Total Switching Time vs Pull-Up Resistor RISE 1 5 Total Switching Time vs Overdrive VS = ±15V FALL VS = ±2.5V FALL Total Switching Time vs Total Supply Voltage 10 VS = ±15V 10 25 RL = 10k VOUT = 90% VFINAL (RISE) VOUT = 10% VFINAL (FALL) VSTEP = 100mV VOVERDRIVE = 10mV 1716 G12 100 VS = 5V 15 Total Switching Time vs Temperature OUTPUT SHORTED TO V+ TA = 25°C 25 20 1716 G27 1716 G10 30 OUTPUT SHORTED TO V+ 25 OUTPUT CURRENT LIMIT (mA) 0.5 TOTAL SWITCHING TIME (µs) 450 REVERSE CURRENT (mA) OUTPUT LEAKAGE CURRENT (nA) 500 Output Sinking Current Limit vs Temperature Reverse Supply Current Response Time VOUT = 90% VFINAL VSTEP = 100mV VOVERDRIVE = 10mV TA = 25°C VIN+ 30V 26V VS = ±15V RISE 10 5V VS = ±2.5V RISE RL = 10k VOUT 0V 1 1 100 1000 10 PULL-UP RESISTOR (k) 10000 RL = 100k RL = OPEN VS = 5V, 0V TIME (µs) VOD = 10mV RL = 10k, 100k, OPEN VIN+ = 26V TO 30V VIN– = 29.99V 1716 G17 1716 G16 1716 G15 Rev. B 8 For more information www.analog.com LT1716 TYPICAL PERFORMANCE CHARACTERISTICS Response Time Response Time Response Time VIN+ 25V 21V 15V VIN+ 30V 26V VIN+ 25V 21V 15V RL = 10k, 100k VOUT VOUT RL = OPEN –15V 5V –15V VOUT 0V VS = 5V, 0V TIME (µs) VOD = 10mV RL = 10k, 100k, OPEN VIN+ = 30V TO 26V VIN– = 26.01V 1716 G19 VS = ±15V TIME (µs) VOD = 10mV RL = 10k, 100k, OPEN VIN+ = 21V TO 25V VIN– = 24.99V 1716 G18 Response Time Response Time VIN+ 2.5V 2.4V VOUT 5V RL = 100k VIN+ 2.6V 2.5V VIN+ 0V –100mV 15V VOUT RL = OPEN 1716 G20 Response Time 5V RL = 10k VS = ±15V TIME (µs) VOD = 10mV RL = 10k, 100k, OPEN VIN+ = 25V TO 21V VIN– = 21.01V VOUT 0V RL = 10k, 100k RL = OPEN –15V 0V VS = ±15V TIME (µs) VOD = 10mV RL = 10k, 100k, OPEN VIN+ = 2.4V TO 2.5V VIN– = 2.49V 1716 G22 VS = 5V TIME (µs) VOD = 10mV RL = 10k, 100k, OPEN VIN+ = 2.6V TO 2.5V VIN– = 2.51V 1716 G21 Below VS– Fault (Rising) Response Time VIN+ 100mV 0V 15V VOUT –15V VIN+ –14.9V –19V 15V RL = 10k, 100k VOUT VOUT RL = OPEN –15V 1716 G24 1716 G23 Below VS– Fault (Falling) VIN+ –14.9V –19V 15V VS = ±15V TIME (µs) VOD = 10mV RL = 10k, 100k, OPEN VIN+ = 110mV TO 0mV VIN– = 10mV VS = ±15V TIME (µs) VOD = 10mV RL = 10k, 100k, OPEN VIN+ = –100mV TO 0V VIN– = –10mV –15V VS = ±15V TIME (µs) RL = 10k, 100k, OPEN VIN+ = –19V TO –14.9V VIN– = –15V 1716 G25 VS = ±15V TIME (µs) RL = 10k, 100k, OPEN VIN+ = –14.9V TO –19V VIN– = –15V 1716 G26 Rev. B For more information www.analog.com 9 LT1716 APPLICATIONS INFORMATION The LT1716 comparator features low power operation with exceptional input precision with rail-to-rail input and output swing. The comparator operates flawlessly even when the inputs are pulled over the positive rail or below the negative rail. Supply Voltage The LT1716 operates from 2.7V to 44V. The comparator can be shut down by removing V+. In this condition, the input bias current is typically less than 3nA, even if the inputs are 44V above the negative supply. The LT1716 is protected against reverse battery voltages of up to 20V. The reverse battery current is resistive as shown in the Reverse Supply Current graph. Inputs The comparator inputs can swing from 0.5V above to 44V above V–. If one input is within this range, the other input can be forced up to 5V below V– without phase reversal occuring at the output. The LT1716 has three stages—NPN, PNP and common base (see Simplified Schematic)—resulting in three distinct operating regions and two transition regions as shown in the Input Bias Current vs Common Mode typical performance curve. For input voltages about 0.8V or more below V+, the PNP input stage is active and the input bias current is typically –4nA. The PNP differential input stage will have bias current that flows out of the device. With a differential input voltage of even just 100mV or so, there will be zero bias current into the higher of the two inputs, while the current flowing out of the lower input will be twice the measured bias current. When the input voltage is about 0.5V or less from V+, the NPN state is operating and the input bias current is typically 10nA. Increases in temperature will cause the voltage at which operation switches from the PNP stage to the NPN stage to move towards V+. The input offset voltage of the NPN stage is untrimmed and is typically 500µV. A Schottky diode in the collector of each NPN transistor of the NPN input stage allows the LT1716 to operate with either or both of its inputs above V+. At about 0.3V above V+, the NPN transistor is fully saturated and the input bias current is typically 4µA at room temperature. The input offset voltage is typically 500µV when operating above V+. The LT1716 will operate with its input 44V above V–, regardless of V+. The transition to the negative common mode input stage occurs at 0.3V above V–. Above this trip point the PNP stage is active. When the inputs are 0.3V below V–, the common base input stage is active in addition to the PNP stage. The input bias current out of each input becomes VIN/5kΩ. The LT1716 is designed to operate when either input falls below the negative supply. Internal resistors protect the inputs for faults below the negative supply of up to 5V without phase reversal. The built-in 5k resistor limits the current at each input to 1mA at 5V below the negative supply. External matched input resistors can be added for increased voltage fault operation below the negative supply but the maximum input current should be kept under 1mA. Input Protection The inverting and noninverting input pins of the LT1716 have on-chip protection. ESD protection is provided to prevent damage during handling. The input transistors have voltage clamping and limiting resistors to protect against excursions as much as 5V below V–. There are no clamping diodes between the inputs and the maximum differential input voltage is 44V. Output The output stage of the LT1716 can drive loads connected to a supply more positive than the device, the same as comparators with open collector output stages. The output of the LT1716 can be pulled up to 44V above V–, regardless of V+. Rev. B 10 For more information www.analog.com For more information www.analog.com VEE 3µA R3 60k Q11 R4 30k VCC Q21 IN+ Q7 IN – R2 5k R1 5k A A Q4 Q6 B Q20 Q3 D2 Q5 B D1 D3 R5 Q1 Q2 Q12 D4 Q15 D5 R8 Q16 Q61 Q53 Q62 Q17 Q35 Q18 D6 Q39 R6 Q34 Q33 Q13 R9 Q10 R7 Q14 R10 Q25 Q22 Q8 R11 Q9 Q24 Q23 Q36 Q31 Q37 Q32 Q38 D8 Q26 Q28 Q27 1716 SS D7 Q30 Q29 OUT LT1716 SIMPLIFIED SCHEMATIC Rev. B 11 LT1716 PACKAGE DESCRIPTION S5 Package 5-Lead Plastic TSOT-23 (Reference LTC DWG # 05-08-1635) 0.62 MAX 0.95 REF 2.90 BSC (NOTE 4) 1.22 REF 1.4 MIN 3.85 MAX 2.62 REF 2.80 BSC 1.50 – 1.75 (NOTE 4) PIN ONE RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.30 – 0.45 TYP 5 PLCS (NOTE 3) 0.95 BSC 0.80 – 0.90 0.20 BSC 0.01 – 0.10 1.00 MAX DATUM ‘A’ 0.30 – 0.50 REF 0.09 – 0.20 (NOTE 3) NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193 1.90 BSC S5 TSOT-23 0302 Rev. B 12 For more information www.analog.com LT1716 REVISION HISTORY REV DATE DESCRIPTION B 10/19 Added Automotive Qualified Parts PAGE NUMBER All Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license For is granted implication or otherwise under any patent or patent rights of Analog Devices. more by information www.analog.com 13 LT1716 TYPICAL APPLICATIONS Overcurrent Flag 4.5V TO 44V LT1634-1.25 113k 1% 11.8k 1% 3V 4 10M 1% RS LOAD 0.1µF 5 – CMPD6263 1 LT1716 3 10.7k 1% + 2 OVERCURRENT 10M 1% IMAX = 0.1 RS 1716 TA03 Charge/Discharge Indicator 0.1Ω 3V TO 44V + – LOAD CHARGE CURRENT VCHARGER 3V 681Ω 1% 4 1M 1% 681Ω 1% – 0.1µF 5 CMPD6263 1 LT1716 3 + 2 CHARGE 1M 1% 1716 TA04 RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LTC1442 Dual Micropower Comparator and 1% Reference 1.182V ±1% Reference, ±10mVMAX Input Offset LTC1540 Nanopower Comparator and 1% Reference 1.182V ±1% Reference, ±10mVMAX Input Offset LT1634 Micropower Precision Shunt Reference 0.05%, 10µA, 10ppm/°C Max Drift, 1.25V, 2.5V, 4.096V, 5V, MSOP, SO-8, TO-92 Packages LTC1921 Dual –48V Telecom Supply Monitor Monitors Two Supplies and Fuses LTC1998 Micropower Li-Ion Battery Monitor 1% Trip Point Adjustable from 2.5V to 3.25V Rev. B 14 10/19 www.analog.com For more information www.analog.com  ANALOG DEVICES, INC. 2002–2019