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Solutions Search - High Speed Comparators

LTC6752 Pulse Stretcher Circuit/Monostable Multivibrator

Dec 16th 2014
For detecting short pulses from a single sensor, a pulse stretcher is often required. The circuit of the figure above acts as a one-shot, stretching the width of an incoming pulse to a consistent ~100ns. The circuit works as follows: Comparator U1 functions as a threshold detector, and Comparator U2 functions as a one-shot. ...

Circuit LTspice 

 

LTC6752 Optical Receiver Circuit

Dec 16th 2014
The LTC6752, along with a high speed high performance FET input operational amplifier like the LTC6268, can be used to implement an optical receiver as shown above. The figure shows the output of the LTC6268 driving the –IN pin of the LTC6752-2, the +IN pin of the LTC6752-2, and the LTC6752 output. The photodiode is being ...

Circuit 

 

LTC6752 200MHz Clock Restoration/Level Shifting

Dec 16th 2014
High speed comparators are often used in digital systems to recover distorted clock waveforms. The separate input/ output supplies feature of the LTC6752-2 allows it to be used in applications where signals need to be shifted from one voltage domain to another. The circuit above can perform both recovery and level translation ...

Circuit 

 

LT1116 Fast Zero Crossing Detector

Aug 7th 2014
The LT1116 is an ultra fast (12ns) comparator designed for sensing signals near the negative supply. The input common mode range extends from 2.5V below the positive supply down to the negative supply rail. Like the LT1016, this comparator is specifically designed to interface directly to TTL logic with complementary outputs. ...

Circuit LTspice 

 

LT1715 Rail-to-Rail 1MHz Pulse Width Modulator

Jun 1st 2001
In applications where a high frequency variable PWM generator is needed, the LT1715 provides a small and simple solution, as shown in the circuit of Figure 10. The top comparator, U1A, acts as a ramp generator. Biasing resistors R1 and R2 and a 7:1 positive feedback ratio through R3 set the positive input to approximately 2.5V±250mV. ...

Circuit LTspice 

 

Clock Tunable, Filter Based Sine Wave Generator

Nov 13th 2000
A feedback loop enclosed resonator can be made to oscillate. This circuit’s sine wave generator takes advantage of this and eliminates the need for an amplitude control loop. This circuit, a mildly modified form of the Regan resonant bandpass loop, is clock tunable and produces sine and cosine outputs. ...

Circuit 

 

LT1721 Pulse Generator Has 0ns to 10ns Width, 520ps Transitions

Oct 13th 1999
It is sometimes desirable to produce extremely short width pulses in response to an input trigger. Such a predictable, programmable short time interval generator has broad use in fast pulse circuitry, particularly in sampling applications. This circuit, built around a quad high speed comparator and a fast gate, has a settable ...

Circuit LTspice 

 

Dual Limit Microvolt Comparator

Jan 1st 1998
Low offset precision amplifiers make very accurate comparators. This is a window comparator when an output LED indicates that the input is outside of the window. Hysteresis to ensure smooth switching is provided to one of the offset nulling terminals with minimal impact on offset and therefore threshold accuracy. ...

Circuit 

 

Microvolt Comparator with Hysteresis

Jan 1st 1998
Very low offset, 20uV typical, can produce extremely accurate comparator functions. Small input voltages can produce oscillations without hysteresis. Here hysteresis is added to a Vos trim pin to as to not degrade the input precision. ...

Circuit 

 

Microvolt Compararator with TTL Output

Nov 1st 1983
Amplifiers can easily be used as comparators although somewhat slower than dedicated circuits. Very accurate comparison threshold is provided by the low offset of the amplifier. Feedback to one of the offset adjust pins adds hysteresis to prevent oscillations when the inputs are close to each other. ...

Circuit