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Solutions Search - Micropower Comparators

LT6703 AC Line Overcurrent Indicator

Philip Lane - Field Applications Engineer
Gabino Alonso - Strategic Marketing Engineer
Scott Olson - Associate Engineer
Jun 4th 2016
Circuit Description This circuit design is to monitor the average current in an AC line-connected load and to illuminate an LED if it exceeds a specified level. µPower, Low Voltage Comparator with Reference The basis of this design is the LT6703-2 which combines a micropower, low voltage comparator with a 400mV reference ...

Blog Post Circuit LTspice 

 

High Accuracy, μPower, Over-Voltage Detector with Glitch Suppressor Using LTC1541 and LTC6994

May 4th 2016
An overvoltage detector which suppresses glitches is constructed from the LTC®1541 micropower op amp + comparator + voltage reference and LTC6994-1 TimerBlox® delay block/debouncer. In this circuit, the LTC1541 comparator detects power rail overvoltage conditions (including glitches). The built-in op amp inverts this ...

Circuit LTspice 

 

LT6703 μPower Supply Voltage Monitor with 2V Hysteresis

Mar 17th 2015
The LT6703 µPower, low voltage comparator and reference offers a single comparator and accurate reference in a 2mm × 2mm DFN package. The -3 version is has a non-inverting input. Although only one of its comparator inputs is accessible (the other is connected to a 400mV internal precision voltage reference) its size ...

Blog Post Circuit LTspice 

 

LTC4000 48V to 10.8V at 10A Buck Converter 3-Cell LiFePO4 Battery Charger with 2.9h Termination Timer, 1.25A Trickle Charge Current and Charging PFET Thermal Protection

Sep 23rd 2014
The LTC®4000 is a high voltage, high performance controller that converts many externally compensated DC/DC power supplies into full-featured battery chargers. ...

Circuit 

 

LT2940 28V Power to Frequency Converter

Nov 30th 2009
In some environments isolation is necessary for safety or noise reasons. The circuit above shows a power-to-frequency converter using the LT2940. The PMON output alternately charges and discharges a film capacitor, C5. When the voltage on C5 charges to the upper threshold on hysteretic comparator LTC1440, its output flips the ...

Circuit 

 

Dual Output, Buffered Reference (On Single 3V Supply)

Apr 18th 2003
The amplifier configuration establishes the reference voltage across the 75k resistor. A fixed current is then forced into the 46.4k resistor and sets the lower output voltage. The upper voltage output is greater than the lower voltage output by the reference voltage. ...

Circuit 

 

Low Power Comparator with <10uV Hysteresis

Dec 1st 1989
The opamp is used as a precision comparator that drives an NPN transistor to form a logic-level output. Controlled positive feedback into a trim pin makes precision microvolt hysteresis control practical. ...

Circuit 

 

5V Powered Thermistor Heating/Cooling Automatic Thermostat

Jan 1st 1987
The LTC1040 is a monolithic CMOS dual comparator manufactured using Linear Technology’s enhanced LTCMOSTM silicon gate process. Extremely low operating power levels are achieved by internally switching the comparator ON for short periods of time. The CMOS output logic holds the output information continuously while not consuming ...

Circuit 

 

2-Wire Thermistor 0°C to 100°C Temperature Transducer with 4mA to 20mA Output

Jan 1st 1987
The LTC1040 is a monolithic CMOS dual comparator manufactured using Linear Technology’s enhanced LTCMOSTM silicon gate process. Extremely low operating power levels are achieved by internally switching the comparator ON for short periods of time. The CMOS output logic holds the output information continuously while not consuming ...

Circuit 

 

LTC6990/LTC1440/LTC1059 Quadrature Sine Wave Oscillator

Jan 1st 1987
This circuit provides a voltage controlled frequency range from 2Hz to 18kHz with 1Vp-p constant putput amplitude. The LTC6990 is a precision silicon oscillator with a programmable frequency range of 488Hz to 2MHz. It can be used as a fixed-frequency or voltage-controlled oscillator (VCO). The LTC6990 is part of the TimerBlox ...

Circuit