LT1017CSW#PBF

LT1017/LT1018 Micropower Dual Comparator FEATURES DESCRIPTION n The LT®1017/LT1018 are general purpose micropower comparators. The LT1017 is optimized for lowest operating power while the LT1018 operates at higher power and higher speed. Both devices can operate from a single 1.1V cell up to 40V. The output stage includes a class “B” pullup current source, eliminating the need for an external resistive pull-up and saving power. The output stage is also designed to allow driving loads connected to a supply more positive than the device, as can comparators with open-collector output stages. n n n n n n n Maximum Offset Voltage: 1mV Maximum Bias Current: 15nA Typical Output Drive: 70mA Operates from 1.1V to 40V Internal Pull-Up Current Output Can Drive Loads Above V+ 30μA Supply Current (LT1017) 110μA Supply Current (LT1018) Available in 8-Lead PDIP, 8-Lead Plastic S0, and 16-Lead Plastic SO Packages Input specifications are also excellent. On-chip trimming minimizes offset voltage, while high gain and common mode rejection ratio keep other input referred errors low. Common mode voltage range includes ground. Special circuitry prevents false output states even if the input is overdriven. APPLICATIONS n n n Power Supply Monitors Relay Driving Oscillators L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. The LT1017/LT1018 are pin compatible with older dual comparators such as 393 type devices. TYPICAL APPLICATION 1.5V Powered Refrigerator Alarm Supply Current 160 V+ 1.5V 3 52.3k 1% 1/2 LT1017 2 5 YSI 44011 258.3k AT 5°C 333.1k AT 0°C + 8 – + 1/2 LT1017 6 1 – 7 OUTPUT HIGH FOR 0°C ≤ T ≤ 5°C SUPPLY CURRENT (μA) 665k 1% 665k 1% LT1018 OUTPUTS LOW 140 120 100 80 LT1017 OUTPUTS LOW 60 40 LT1018 OUTPUTS HIGH LT1017 OUTPUTS HIGH 20 0 4 280k 1% 1 2 10 20 40 4 TOTAL SUPPLY VOLTAGE (V) 100 1017/18 TA02 1017/18 TA01 10178ff 1 LT1017/LT1018 ABSOLUTE MAXIMUM RATINGS (Note 1) Supply Voltage ......................................................... 40V Differential Input Voltage.......................................... 40V Input Voltage............................................. – 0.3V to 40V Short-Circuit Duration .................................... Indefinite Storage Temperature Range.................. –65°C to 150°C Operating Temperature Range LT1017M/LT1018M ......................... –55°C to 125°C LT1017C/LT1018C ................................. 0°C to 70°C LT1017I/LT1018I ............................... –40°C to 85°C Lead Temperature (Soldering, 10 sec) ................. 300°C PACKAGE/ORDER INFORMATION TOP VIEW TOP VIEW +IN A 1 V– 8 – +A 2 +IN B 3 –IN B 4 + B – –IN A OUTPUT A 1 8 V+ 7 OUTPUT B 6 –IN B 5 +IN B 7 OUT A –IN A 2 6 V+ +IN A 3 5 V OUT B – – +A – B+ 4 S8 PACKAGE 8-LEAD PLASTIC SO N8 PACKAGE 8-LEAD PDIP TJMAX = 150°C, θJA = 190°C/W TJMAX = 150°C, θJA = 140°C/W ORDER PART NUMBER S8 PART MARKING 1017 1017I 1018 1018I LT1017CS8 LT1017IS8 LT1018CS8 LT1018IS8 ORDER PART NUMBER PART MARKING LT1017CN8 LT1017IN8 LT1018CN8 TOP VIEW TOP VIEW V+ 8 7 OUTPUT B OUTPUT A 1 –IN A 2 – A B + + – 6 –IN B 5 +IN B 4 V– H PACKAGE 8-LEAD TO-5 METAL CAN +IN A 3 NC 1 16 NC NC 2 15 NC OUT A 3 14 V+ –IN A 4 +IN A 5 – +A V– 6 13 OUT B – 12 –IN B B+ 11 +IN B NC 7 10 NC NC 8 9 NC TJMAX = 150°C, θJA = 150°C/W, θJC = 45°C/W OBSOLETE PACKAGE SW PACKAGE 16-LEAD PLASTIC SO Consider the 8-Lead Plastic Dip Package For Alternate Source TJMAX = 150°C, θJA = 130°C/W ORDER PART NUMBER PART MARKING LT1017MH LT1017CH LT1018MH LT1018CH ORDER PART NUMBER PART MARKING LT1017CSW LT1018CSW Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for parts specified with wider operating temperature ranges. 10178ff 2 LT1017/LT1018 ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range of – 55°C to 85°C for M grade parts, –40°C to 85°C for I grade parts and 0°C to 70°C for C grade parts. PARAMETER CONDITIONS MIN Offset Voltage (Note 2) ± 0.75V ≤ VS ≤ ±20V 25°C ● LT1017 TYP ±0.75V ≤ VS ≤ ±20V 25°C ● 125°C Offset Current ±0.75V ≤ VS ≤ ±20V 25°C ● VS = ±20V, –20V ≤ VCM ≤ 19.1V 25°C ● 125°C Power Supply Rejection Ratio ±0.75V ≤ VS ≤ ±20V 25°C ● 125°C Gain No Load, VOUT = ±19.9V (Note 3) 25°C ● 125°C Output Sink Current RL = 4k, VOUT = ±19V 25°C V + = 4.5V, V– = 0V Overdrive > 30mV 25°C ● ● 125°C Output Source Current V + = 40V, V – = 0V VIN = 5mV, VOUT = 0.4V 25°C ● 125°C V + = 1.2V, V – = 0V VIN = 5mV, VOUT = 0.4V 25°C ● 125°C Negative Output Saturation Positive Output Saturation IOUT = 0mA = 0.1mA = 1mA = 10mA = 30mA V + = 4.5V, V – = 0V IOUT = 0mA = 0.1mA = 1mA = 10mA = 30mA IOUT = 0mA = 0.1mA = 1mA = 10mA = 30mA IOUT = 0μA = 10μA = 0μA = 10μA = 0μA = 10μA LT1018 TYP MAX UNITS 1 1.4 5 0.4 0.5 0.7 1 1.4 1.5 mV mV mV 5 7 10 15 25 60 15 18 75 100 110 nA nA nA 0.4 0.5 2 3 20 1 1.6 8 12 20 nA nA nA 125°C Common Mode Rejection Ratio MIN 0.4 0.5 125°C Bias Current MAX 105 100 82 115 115 100 105 100 95 115 115 110 dB dB dB 96 95 82 110 105 96 95 86 110 105 100 dB dB dB 110 105 100 115 115 110 105 100 125 120 dB dB dB 100 94 110 100 94 110 dB dB 30 25 10 65 50 20 35 25 10 70 50 30 mA mA mA 30 25 25 75 70 75 75 50 50 250 220 200 μA μA μA 25 15 25 35 20 40 70 45 40 140 120 110 μA μA μA 25°C 25°C 25°C 25°C 25°C 5 35 60 120 350 20 60 120 200 600 5 35 60 120 350 15 60 120 250 700 mV mV mV mV mV V + = 4.5V, V – = 0V VIN = –10mV ● ● ● ● ● 5 40 75 150 600 20 75 150 300 900 8 35 70 150 500 20 70 150 300 900 mV mV mV mV mV V + = 4.5V, V – = 0V VIN = –10mV 125°C 125°C 125°C 125°C 125°C 25 60 100 300 50 100 200 600 10 60 110 300 900 40 100 200 400 mV mV mV mV mV 25°C 25°C 40 175 45 190 50 80 250 90 300 100 300 35 175 45 190 50 80 250 90 300 100 300 mV mV mV mV mV mV VIN = –10mV ● ● 125°C 125°C 10178ff 3 LT1017/LT1018 ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range of – 55°C to 85°C for M grade parts, –40°C to 85°C for I grade parts and 0°C to 70°C for C grade parts. PARAMETER CONDITIONS Leakage Current VS = 5V, VOUT = 40V VIN ≥ 100mV MIN 25°C ● LT1017 TYP VS = 5V 25°C ● 25°C ● 125°C Minimum Operating Voltage IOUT = 1mA 25°C ● 125°C 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. LT1018 TYP MAX UNITS 3 3 5 1 1.8 8 10 15 μA μA μA 30 40 60 80 80 110 110 250 250 300 μA μA μA 40 55 90 100 100 130 140 250 270 300 μA μA μA 1.2 1.2 1.2 V V V 125°C VS = 40V MIN 0.5 0.6 125°C Supply Current MAX 1.15 1.15 1.15 Note 2: Offset voltage is guaranteed over a common mode voltage range of V – ≤ VIN ≤ (V+ – 0.9V). Note 3: No load gain is guaranteed but not tested (LT1017 only). 10178ff 4 LT1017/LT1018 TYPICAL PERFORMANCE CHARACTERISTICS Input Bias Current Input Offset Current LT1018 VCM = V– LT1018 VCM = V+ – 1V 10 LT1017 VCM = V– IBIAS REVERSES POLARITY LT1017 VCM = V+ – 1V 1 –50 –25 0 2.0 1.5 1.0 50 25 75 0 TEMPERATURE (°C) 100 0 –20 125 V+ –0.4 Common Mode Limits 0.1 VCM HIGH –1.0 V– VCM LOW –0.2 –0.4 –0.6 V– –0.2 –0.4 –0.6 –0.8 COMMON MODE VOLTAGE (V) 0 Positive Supply Current 1 10 OUTPUT SINK CURRENT (mA) 40 1017/18 G07 LT1017 OUTPUTS HIGH 0 25 50 75 100 125 150 TEMPERATURE (°C) Output Sinking Current Limit 100 OUTPUT CURRENT LIMIT (mA) POSITIVE SUPPLY CURRENT (μA) SATURATION VOLTAGE (mV) 100 LT1017 OUTPUTS LOW 60 NPN Output Saturation Voltage 10 0.1 80 1017/18 G06 1000 100 LT1018 OUTPUTS HIGH 100 1017/18 G05 10000 1000 120 0 –50 –25 25 50 75 100 125 150 TEMPERATURE (°C) 1017/18 G04 LT1017 LT1018 OUTPUTS LOW 20 ΔVOS = 0.5mV VOLTAGES ARE REFERRED TO SUPPLIES –0.8 –50 –25 –1.0 VSUPPLY = 20V 140 –0.8 100 125°C 25°C 10 0.001 20 Supply Current 160 SUPPLY CURRENT (μA) COMMON MODE VOLTAGE (V) INPUT BIAS CURRENT (μA) 85°C 25°C –0.1 0.1 0.2 0 DIFFERENTIAL INPUT VOLTAGE (V) 1017/18 G03 –0.6 10 –0.2 1017/18 G02 100 LT1018 LT1017 – IB 10 LT1017 Input Bias Current with Inputs Driven Below the Supply 0.01 0.2 LT1017 + IB 15 0.5 0 –50 –25 25 50 75 100 125 150 TEMPERATURE (°C) 125°C LT1018 – IB 5 LT1018 1017/18 G01 1 LT1018 + IB 2.5 BIAS CURRENT (nA) INPUT OFFSET CURRENT (nA) INPUT BIAS CURRENT (nA) Bias Current vs Differential Input 20 3.0 100 –55°C OUTPUT SHORTED TO V+ 80 LT1018 LT1017 60 40 20 0 0.01 0.1 1 10 SINK CURRENT (mA) 100 1017/18 G08 1 10 TOTAL SUPPLY VOLTAGE (V) 100 1017/18 G09 10178ff 5 LT1017/LT1018 TYPICAL PERFORMANCE CHARACTERISTICS OUTPUT SHORTED TO V+ 80 LT1018 VS = 5V 60 LT1017 VS = 5V TOTAL SWITCHING TIME (μs) OUTPUT CURRENT LIMIT (mA) Total Switching Time 100 LT1018 VS = 40V 40 LT1017 VS = 40V 20 0 –50 –25 0 RL = 47k (LT1018) RL = 200k (LT1017) VOUT = 90% VFINAL VOVERDRIVE = 5mV LT1018 FALL 10 LT1017 RISE LT1017 FALL LT1017 RISE LT1018 RISE 1 –50 –25 25 50 75 100 125 150 TEMPERATURE (°C) Output Delay 100 DELAY TIME (μs) Output Sinking Current Limit 100 0 TRANSITION TIME (μs) TRANSITION TIME (μs) VOUT = 10% VFINAL 0.1 1 10 OVERDRIVE (mV) 100 1017/18 G12 Positive Transition Time LT1017 RISE LT1017 FALL/ LT1018 RISE LT1018 FALL 1 10 20 30 TOTAL SUPPLY VOLTAGE (V) LT1018 FALL LT1017 Response Time 10 10% VFINAL ≤ VOUT ≤ 90% VFINAL VOVERDRIVE = 10mV 0 LT1018 RISE 1017/18 G11 Transition Time 10 1 25 50 75 100 125 150 TEMPERATURE (°C) 1017/18 G10 100 10 LT1017 FALL 40 LT1017 VSUP = 2V LT1017 VSUP = 40V 1 LT1018 VSUP = 40V VIN RL = 10k LT1018 VSUP = 2V VOUT V+ = 5V 5μs/DIV V– = 0V VIN = 100mV STEP VOVERDRIVE = 10mV 10% VFINAL ≤ VOUT ≤ 90% VFINAL VOVERDRIVE = 10mV 0.1 1k 100k 10k PULL-UP RESISTOR (Ω) 1M 1017/18 G15 1017/18 G14 1017/18 G13 LT1017 Response Time LT1018 Response Time VIN RL = ∞ RL = 100k LT1018 Response Time VIN VIN RL = 10k RL = ∞ RL = 100k VOUT VOUT 5V VOUT 0V V+ = 5V 5μs/DIV V– = 0V VIN = –100mV STEP VOVERDRIVE = –10mV 1017/18 G17 V+ = 5V 5μs/DIV V– = 0V VIN = 100mV STEP VOVERDRIVE = –10mV 1017/18 G16 V+ = 5V 2μs/DIV V– = 0V VIN = –100mV STEP VOVERDRIVE = –10mV 1017/18 G18 10178ff 6 LT1017/LT1018 TYPICAL APPLICATIONS Driving Relays Increasing Positive Output Current Delay On Power Up V+ 12V V+ + 100k 5V VIN 2 – 8 LT1017 3 + 3 VIN 2 4 8 + 1 – VOUT 2 1N4148 4 V– 1017/18 TA03 3 2N3904 1 LT1017/ LT1018 1μF + 8 LT1017/ LT1018 – 1 4 1017/18 TA04 1k 20k 1017/18 TA05 LT1018 Op Amp, AV = 100 5V 10k 3 VIN 8 + R1* 1 LT1018 2 – VOUT 4 RL –5V 1M 10k 15Ω 0.22μF 1017/18 TA06 RL = 100k BANDWIDTH = 30Hz –SLEW = 320V/ms +SLEW = 0.93V/ms *WITH R1 = 1k BANDWIDTH ≅ 200Hz LT1017 Op Amp, AV = 100 5V 10k VIN 3 + 8 LT1017 2 – 1 VOUT 4 RL ≥ 200k –5V 1M 10k 10Ω 3.3μF 1017/18 TA07 –SLEW = 23.5V/ms +SLEW = 0.017V/ms BANDWIDTH = 0.3Hz AT RL = 220k 10178ff 7 LT1017/LT1018 TYPICAL APPLICATIONS Negative Voltage Regulator 510k 2 + 510k VOUT –5V 50mA 1 LT1017/ LT1018 3 100k 8 150pF – + LT1004 2.5V 4 220μF 1k 220pF 1017/18 TA08 –VIN –5.2V TO –40V 2-Wire Comparator 4.7k VSUPPLY VIN 3 + 8 LT1018 2 – 1N4148 ×2 1 OUTPUT 3V ≤ VSUPPLY ≤ 40V 4 LT1018 ONLY 0.01μF 4.7k VSUPPLY VIN 3 2 + 8 LT1017/ LT1018 – 4 1N4148 ×4 1 OUTPUT 3V ≤ VSUPPLY ≤ 40V 1017/18 TA09 10178ff 8 LT1017/LT1018 TYPICAL APPLICATIONS 5V Power Supply Monitor V+ 36.5k 1% 3k 5 2.5k 1% 8 + 7 1/2 LT1017 6 – 3 + 1 1/2 LT1017 LT1034 1.235V OUTPUT HIGH FOR 4.5V ≤ VIN ≤ 5.5V 2 – 4 OUTPUT VALID FOR V+ ≥ 1.1V 11.2k 1% 1017/18 TA10 Precise Tri-Wave Generator TRIANGLE WAVE OUTPUT 0.5V TO 2.5V 5V 22k 0.047μF 3k 2N3904 2 – 1/2 LT1013 3 3k 8 1 22k + 3 4 + 8 1/2 LT1018 2 – 1 SQUARE WAVE OUTPUT 10pF 100k LT1009 2.5V 5 200k + 1/2 LT1018 6 – 7 4 47k 1017/18 TA11 10178ff 9 LT1017/LT1018 TYPICAL APPLICATIONS Power Supply Monitor VIN 160k 330Ω 1N4148 100k 2 + 1 LT1018 1μF 3 LT1004 1.2V 8 – + 390k 4 0.01μF 1017/18 TA12 120k 1N4148 VIN LED 6.00V OFF 5.25V FLASH AT 1Hz 5.00V FLASH AT 3Hz 4.75V FLASH AT 5Hz 1.5V Input Flyback Regulator 22μF + 1.5V 2M 2 1M 100k – 1/2 LT1018 3 6 + 1M 110k 220pF 1 0.0022μF 1/2 LT1018 1N4148 100k 1% FILM 5 120k 1% FILM + 7 HP5082-2810 4 56.2k 1% FILM 120k LT1004 1.2V L1 4.7mH 8 – OUTPUT 5V 365k 1% FILM 1N4148 + L1: RL1123-4.7-RENCO, INC 80% EFFICIENCY AT 2mA OUTPUT 47μF 1017/18 TA13 10178ff 10 LT1017/LT1018 TYPICAL APPLICATIONS Regulated Step-Up Converter 5V 400mH** 1N4148 100k 2 0.1μF 200k 5 1 1/2 LT1018 + 1N4148 + 4 LT1004 1.2V + OUTPUT 10V 2mA 100μF R1* 910k 2000pF 7 1/2 LT1018 6 3 8 – – ( ) R2* 120k *VOUT = 1.2 1 + R1 R2 **DALE TE-5/Q3/400mH 1017/18 TA14 Low Power* V-to-F Converter 3M 0.001μF POLYSTYRENE 1N4148 OUTPUT 0kHz TO 1kHz 9V 2 2N3904 0.1μF 1/2 LT1018 3 100k 1N4148 8 – + 1N4148 1 1N4148 4 220pF 1M LT1034 1.2V 10k 330k 7 *IQ ≅ 350μA 220k 2.2μF + INPUT 0V TO 1V 47k 1N4148 FULL-SCALE TRIM 910K 100k 1% – 6 0.1μF 1/2 LT1018 + 5 1017/18 TA15 10178ff 11 LT1017/LT1018 PACKAGE DESCRIPTION H Package 8-Lead TO-5 Metal Can (.200 Inch PCD) (Reference LTC DWG # 05-08-1320) .335 – .370 (8.509 – 9.398) DIA .305 – .335 (7.747 – 8.509) .040 (1.016) MAX .050 (1.270) MAX SEATING PLANE .165 – .185 (4.191 – 4.699) GAUGE PLANE .010 – .045* (0.254 – 1.143) REFERENCE PLANE .500 – .750 (12.700 – 19.050) .016 – .021** (0.406 – 0.533) .027 – .045 (0.686 – 1.143) 45° PIN 1 .028 – .034 (0.711 – 0.864) .200 (5.080) TYP .110 – .160 (2.794 – 4.064) INSULATING STANDOFF *LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE AND THE SEATING PLANE .016 – .024 **FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS (0.406 – 0.610) H8(TO-5) 0.200 PCD 0204 OBSOLETE PACKAGE 10178ff 12 LT1017/LT1018 PACKAGE DESCRIPTION N8 Package 8-Lead PDIP (Narrow .300 Inch) (Reference LTC DWG # 05-08-1510) .400* (10.160) MAX 8 7 6 5 1 2 3 4 .255 ± .015* (6.477 ± 0.381) .300 – .325 (7.620 – 8.255) .008 – .015 (0.203 – 0.381) +.035 .325 –.015 ( 8.255 +0.889 –0.381 ) .045 – .065 (1.143 – 1.651) .130 ± .005 (3.302 ± 0.127) .065 (1.651) TYP .100 (2.54) BSC .120 (3.048) .020 MIN (0.508) MIN .018 ± .003 (0.457 ± 0.076) N8 1002 NOTE: 1. DIMENSIONS ARE INCHES MILLIMETERS *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm) 10178ff 13 LT1017/LT1018 PACKAGE DESCRIPTION S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) .050 BSC .189 – .197 (4.801 – 5.004) NOTE 3 .045 ±.005 8 .245 MIN 7 6 5 .160 ±.005 .150 – .157 (3.810 – 3.988) NOTE 3 .228 – .244 (5.791 – 6.197) .030 ±.005 TYP 1 RECOMMENDED SOLDER PAD LAYOUT .010 – .020 × 45° (0.254 – 0.508) .008 – .010 (0.203 – 0.254) 0°– 8° TYP .016 – .050 (0.406 – 1.270) NOTE: 1. DIMENSIONS IN .053 – .069 (1.346 – 1.752) .014 – .019 (0.355 – 0.483) TYP INCHES (MILLIMETERS) 2. DRAWING NOT TO SCALE 3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) 2 3 4 .004 – .010 (0.101 – 0.254) .050 (1.270) BSC SO8 0303 10178ff 14 LT1017/LT1018 PACKAGE DESCRIPTION SW Package 16-Lead Plastic Small Outline (Wide .300 Inch) (Reference LTC DWG # 05-08-1620) .050 BSC .045 ±.005 .030 ±.005 TYP .398 – .413 (10.109 – 10.490) NOTE 4 16 N 15 14 13 12 11 10 9 N .325 ±.005 .420 MIN .394 – .419 (10.007 – 10.643) NOTE 3 1 2 3 N/2 N/2 RECOMMENDED SOLDER PAD LAYOUT 1 .005 (0.127) RAD MIN .009 – .013 (0.229 – 0.330) .291 – .299 (7.391 – 7.595) NOTE 4 .010 – .029 × 45° (0.254 – 0.737) 3 4 5 6 7 .093 – .104 (2.362 – 2.642) 8 .037 – .045 (0.940 – 1.143) 0° – 8° TYP NOTE 3 .016 – .050 (0.406 – 1.270) NOTE: 1. DIMENSIONS IN 2 .050 (1.270) BSC .014 – .019 (0.356 – 0.482) TYP INCHES (MILLIMETERS) 2. DRAWING NOT TO SCALE 3. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS. THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS 4. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) .004 – .012 (0.102 – 0.305) S16 (WIDE) 0502 10178ff Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. 15 LT1017/LT1018 TYPICAL APPLICATION Fully Isolated Limit Comparator 5V INTERROGATE PULSE 500μs 1k INTERROGATE PULSE 2N3906 1μF – 4.7k 8 3 + 3k 1 1/2 LT1018 OUTPUT PULSE VIN > VTRIP NO OUTPUT PULSE FOR VIN < VTRIP 2N3906 20k 4 OUTPUT 100k 300k TRIP ADJUST + INPUT 2 LT1004 1.2V 100Ω 10k 2N3904 + 100μF 200pF TRW PC-550-32 ALL GATES 74C02 RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LT1011/LT1011A Voltage Comparators Improved LT111A, 0.5mV VOS(MAX), 25nA IB(MAX), 3nA IOS(MAX), 250ns tPD(MAX) LT1020 Micropower Regulator and Comparator 40μA ISUPPLY, 125mA IOUT, 2.5V Reference Voltage LTC1040 Dual Micropower Comparator 1.5μW (1Sample/Second), 0.5mV VOS(MAX), Rail-to-Rail Input LT1120/LT1120A Micropower Regulator with Comparator and Shutdown 20μA ISUPPLY, 125mA IOUT, 2.5V Reference Voltage LT319A Dual Comparators 0.5mV VOS(MAX), 25mA IOUT, 80ns tPD LT1671 Single Supply Ground Sensing Comparator 450μA ISUPPLY, 60ns tPD, 0.8mV VOS LT1716 Micropower, 44V, SOT-23 Ground Sensing Comparator Input Common Mode Range Extends from –5V to 44V from Negative Supply 10178ff 16 Linear Technology Corporation LT 0208 REV F • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com © LINEAR TECHNOLOGY CORPORATION 2008