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Solutions Search - Mathmatical Functions

LTC6244 High Speed Peak Detector

Hassan Kelley - Field Applications Engineer
Gabino Alonso - Strategic Marketing Engineer
Aug 1st 2016
Introduction Peak detectors capture the extrema of the voltage signal at its input. A positive peak detector captures the most positive point of the input signal and a negative peak detector captures the most negative point of the input signal. Ideally the output of the peak detector circuit tracks or follows the input voltage ...

Blog Post Circuit LTspice 

 

Reference Divide by 4

Apr 29th 2011
The LT5400 is a quad resistor network with excellent matching specifications over the entire temperature range. All four resistors can be accessed and biased independently, making the LT5400 a convenient and versatile choice for any application that can benefit from matched resistors. These resistor networks provide precise ...

Circuit 

 

Reference Divider with Op Amp Input Bias Current Balancing

Apr 29th 2011
The LT5400 is a quad resistor network with excellent matching specifications over the entire temperature range. All four resistors can be accessed and biased independently, making the LT5400 a convenient and versatile choice for any application that can benefit from matched resistors. These resistor networks provide precise ...

Circuit 

 

Single Ended Adder/Subtractor

Aug 2nd 2004
This circuit shows Using Vcom as third algebraic input in an addition/subtraction circuit. This is useful for adding or translating signals. ...

Circuit 

 

General Purpose Arithmetic Block

Jul 18th 2003
This is the circuit for the general purpose arithmatic function, an Analog Computer block which solves the equation VO = ( V1 - V2 + V3) ((RF + RG)/RG) in real time. No A/D conversions or software needed! ...

Circuit 

 

Analog Divider

Feb 14th 1994
The input section forms a precision charge balancing action whereby the capacitor switching rate depends on the ratio of A/B. The output section, driven by the same switching frequency, forms a precision F/V conversion to provide the A/B output signal. ...

Circuit 

 

Micropower Multiplier/Divide

Jan 1st 1987
The X, Y, and Z input amplifiers servo to control the emitter current of transistors according to the applied signals. The transistors Vbe varies logarithmically to the current and so the emitter of Q2 includes the sum of the X and Y logs. The Z signal log is provided at the Q4 base so the resultant Vbe at Q4 is Vbe1+Vbe2-Vbe3. ...

Circuit 

 

LT1078 Absolute Value Circuit (Full-Wave Rectifier)

Jan 1st 1987
For negative inputs, the first section operates as a closed-loop inverter (A=-1) and the second stage is simply a buffer for the positive output. When the input signal is positive, the first opamp output remains saturated near ground and the diode becomes high-impedance, allowing the signal to pass directly to the buffer stage ...

Circuit LTspice 

 

Micropower Dead Zone Generator

Jan 1st 1987
Opamp in lower left functions as a polarity detect comparator, controlling the FET switches in the circuit. The upper left stage in conjunction with the FET, functions as an absolute value circuit so that only positive signal representation passes to the dead-zone function. Q2 is held in cutoff by the control voltage on Q3, ...

Circuit 

 

Half-Wave Rectifier

Jan 1st 1987
This is a conventional inverting amplifier, but with a single supply the output can only provide the positive side of the result. The specific characteristics of the opamp provide well controlled clipping behavior. ...

Circuit 

 

LT1001 Precision Absolute Value Circuit

Nov 1st 1983
An absolute value circuit as as a full wave rectifier. Positive input voltqges cause the first amplifier to act as a unity gain inverter. The second amplifier inverts thiis output again to produce a positive outut voltage. Negative input voltages cause the + input of the second amplifier to move positive to a voltage of 2/3Vin. ...

Circuit LTspice 

 

Dead Zone Generator

Nov 1st 1983
BIPOLAR SYMMETRY IS EXCELLENT BECAUSE ONE DEVICE, Q2, SETS BOTH LIMITS. This circuit outputs 0V for a controlled range of input voltage. When the input voltage exceeds the set voltage in either polarity the output signal moves with unity gain. ...

Circuit