Datasheet LT1017, LT1018 (Analog Devices)

LT1017/LT1018 Micropower Dual Comparator
FEATURES DESCRIPTION
n Maximum Offset Voltage: 1mV The LT®1017/LT1018 are general purpose micropower n Maximum Bias Current: 15nA comparators. The LT1017 is optimized for lowest operat- n Typical Output Drive: 70mA ing power while the LT1018 operates at higher power and n Operates from 1.1V to 40V higher speed. Both devices can operate from a single 1.1V n Internal Pull-Up Current cell up to 40V. The output stage includes a class “B” pull- n Output Can Drive Loads Above V+ up current source, eliminating the need for an external n 30μA Supply Current (LT1017) resistive pull-up and saving power. The output stage is 110μA Supply Current (LT1018) also designed to allow driving loads connected to a supply n Available in 8-Lead PDIP, 8-Lead Plastic S0, and more positive than the device, as can comparators with 16-Lead Plastic SO Packages open-collector output stages. Input specifi cations are also excellent. On-chip trimming minimizes offset voltage, while high gain and common
APPLICATIONS
mode rejection ratio keep other input referred errors low. n Power Supply Monitors Common mode voltage range includes ground. Special n Relay Driving circuitry prevents false output states even if the input is n Oscillators overdriven. 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+ LT1018 1.5V 140 OUTPUTS 665k LOW 1% 120 3 8 + 100 665k 52.3k 1 OUTPUT HIGH FOR 1/2 LT1017 LT1018 1% 1% 0°C ≤ T ≤ 5°C 2 80 OUTPUTS – HIGH 60 LT1017 OUTPUTS SUPPLY CURRENT (μA) 40 LOW 5 + LT1017 20 7 OUTPUTS 1/2 LT1017 HIGH YSI 44011 6 0 258.3k AT 5°C – 1 2 4 10 20 40 100 4 333.1k AT 0°C 280k TOTAL SUPPLY VOLTAGE (V) 1% 1017/18 TA02 1017/18 TA01 10178ff 1