Datasheet

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LT1017/LT1018

10178fe

665k

52.3k

OUTPUT HIGH FOR

0°C ≤ T ≤ 5°C

280k

YSI 44011

258.3k AT 5°C

333.1k AT 0°C

665k

1.5V

–

1/2 LT1017

1017/18 TA01

–

1/2 LT1017

Micropower

Dual Comparator

■

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

The LT

1017/LT1018 are general purpose micropower

comparators. The LT1017 is optimized for lowest operat-

ing 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” pull-

up 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.

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.

The LT1017/LT1018 are pin compatible with older dual

comparators such as 393 type devices.

■

Power Supply Monitors

■

Relay Driving

■

Oscillators

1.5V Powered Refrigerator Alarm

Supply Current

FEATURES

DESCRIPTIO

APPLICATIO S

TYPICAL APPLICATIO

TOTAL SUPPLY VOLTAGE (V)

124

SUPPLY CURRENT (µA)

160

10 20 40 100

1017/18 TA02

120

140

100

LT1018

OUTPUTS

LOW

LT1017

OUTPUTS

LOW

LT1018

OUTPUTS

HIGH

LT1017

OUTPUTS

HIGH

, LTC and LT are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

Summary of content (16 pages)

PAGE 1
LT1017/LT1018 Micropower Dual Comparator U FEATURES DESCRIPTIO ■ 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.
PAGE 2
LT1017/LT1018 W W U W ABSOLUTE AXI U RATI GS (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 ..
PAGE 3
LT1017/LT1018 ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the 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 Bias Current ±0.75V ≤ VS ≤ ±20V 25°C ● LT1017 TYP ● 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.
PAGE 4
LT1017/LT1018 ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the 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: Absolute Maximum Ratings are those values beyond which the life of the device may be impaired.
PAGE 5
LT1017/LT1018 U W TYPICAL PERFOR A CE 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 1.5 1.0 0.5 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.
PAGE 6
LT1017/LT1018 U W TYPICAL PERFOR A CE CHARACTERISTICS 80 LT1018 VS = 5V 60 LT1017 VS = 5V TOTAL SWITCHING TIME (µs) OUTPUT CURRENT LIMIT (mA) OUTPUT SHORTED TO V 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 1 10 OVERDRIVE (mV) 100 LT1017 Response Time VIN TRANSITION TIME (µs) TRANSITION TIME (µs) VOUT = 10% VFINAL 1017/18 G12 Positive Transition Time
PAGE 7
LT1017/LT1018 UO TYPICAL APPLICATI S Driving Relays Increasing Positive Output Current Delay On Power Up V+ V+ 12V 5V VIN 2 – + 3 VIN 8 LT1017 3 + 100k 2N3904 1 LT1017/ LT1018 1 2 8 + – 1N4148 V– 1017/18 TA03 3 VOUT 4 4 1µF 2 + 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.
PAGE 8
LT1017/LT1018 UO TYPICAL APPLICATI S Negative Voltage Regulator 510k 2 + 510k 1 LT1017/ LT1018 3 100k 8 150pF – 220µF VOUT –5V 50mA + LT1004 2.5V 4 1k 220pF 1017/18 TA08 –VIN – 5.2V TO –40V 2-Wire Comparator 4.7k VSUPPLY VIN 3 + 8 LT1018 2 – 1 1N4148 ×2 OUTPUT 3V ≤ VSUPPLY ≤ 40V 4 LT1018 ONLY 0.01µF 4.
PAGE 9
LT1017/LT1018 UO TYPICAL APPLICATI S 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 2 OUTPUT HIGH FOR 4.5V ≤ VIN ≤ 5.5V – 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.
PAGE 10
LT1017/LT1018 UO TYPICAL APPLICATI S 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 100k 1% FILM – 1/2 LT1018 1N4148 5 120k 1% FILM + 7 HP5082-2810 4 56.2k 1% FILM 120k LT1004 1.2V L1 4.
PAGE 11
LT1017/LT1018 UO TYPICAL APPLICATI S Regulated Step-Up Converter 5V 400mH** 1N4148 100k 2 200k 3 8 – 0.1µF + + 1/2 LT1018 6 + 4 LT1004 1.2V 5 1N4148 1 1/2 LT1018 100µF R1* 910k 2000pF 7 OUTPUT 10V 2mA – ( ) 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 1N4148 – 0.1µF 1/2 LT1018 3 100k 8 + 1N4148 1 1N4148 4 220pF 1M LT1034 1.
PAGE 12
LT1017/LT1018 U PACKAGE DESCRIPTIO H Package 8-Lead TO-5 Metal Can (.200 Inch PCD) (Reference LTC DWG # 05-08-1320) 0.335 – 0.370 (8.509 – 9.398) DIA 0.305 – 0.335 (7.747 – 8.509) 0.040 (1.016) MAX 0.027 – 0.045 (0.686 – 1.143) 45°TYP 0.050 (1.270) MAX SEATING PLANE 0.165 – 0.185 (4.191 – 4.699) GAUGE PLANE 0.010 – 0.045* (0.254 – 1.143) 0.027 – 0.034 (0.711 – 0.864) PIN 1 0.200 (5.080) TYP REFERENCE PLANE 0.500 – 0.750 (12.700 – 19.050) 0.110 – 0.160 (2.794 – 4.064) INSULATING STANDOFF 0.
PAGE 13
LT1017/LT1018 U PACKAGE DESCRIPTIO N8 Package 8-Lead PDIP (Narrow .300 Inch) (Reference LTC DWG # 05-08-1510) 0.400* (10.160) MAX 8 7 6 5 1 2 3 4 0.255 ± 0.015* (6.477 ± 0.381) 0.300 – 0.325 (7.620 – 8.255) 0.009 – 0.015 (0.229 – 0.381) ( +0.035 0.325 –0.015 8.255 +0.889 –0.381 ) 0.045 – 0.065 (1.143 – 1.651) 0.130 ± 0.005 (3.302 ± 0.127) 0.065 (1.651) TYP 0.100 (2.54) BSC 0.125 (3.175) 0.020 MIN (0.508) MIN 0.018 ± 0.003 (0.457 ± 0.
PAGE 14
LT1017/LT1018 U PACKAGE DESCRIPTIO S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) 0.189 – 0.197* (4.801 – 5.004) 8 7 6 5 0.150 – 0.157** (3.810 – 3.988) 0.228 – 0.244 (5.791 – 6.197) 1 0.010 – 0.020 × 45° (0.254 – 0.508) 0.008 – 0.010 (0.203 – 0.254) 0.053 – 0.069 (1.346 – 1.752) 0°– 8° TYP 0.016 – 0.050 (0.406 – 1.270) *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.
PAGE 15
LT1017/LT1018 U PACKAGE DESCRIPTIO SW Package 16-Lead Plastic Small Outline (Wide .300 Inch) (Reference LTC DWG # 05-08-1620) 0.398 – 0.413* (10.109 – 10.490) 16 15 14 13 12 11 10 9 0.394 – 0.419 (10.007 – 10.643) NOTE 1 1 0.291 – 0.299** (7.391 – 7.595) 2 3 4 5 6 7 0.093 – 0.104 (2.362 – 2.642) 0.010 – 0.029 × 45° (0.254 – 0.737) 8 0.037 – 0.045 (0.940 – 1.143) 0° – 8° TYP 0.009 – 0.013 (0.229 – 0.330) NOTE 1 0.016 – 0.050 (0.406 – 1.270) 0.050 (1.270) BSC 0.004 – 0.012 (0.
PAGE 16
LT1017/LT1018 U 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.