DAC and Op Amp Generate Variable Negative Control Voltage


Posted on Aug 25, 2012

This design idea describes a simple circuit to generate a programmable negative control voltage. It takes the output of a single supply digital-to-analog converter (DAC) and produces a variable negative voltage. The DAC output from 0V to +2.5V is converted to 0V to -5V at the output. These early DACs (such as the MX7837/MX7847 and MAX523) require both a positive and a negative supply rail to accommodate their negative output.






Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

TimeGen
50 Watt power Amplifier with preamplifier and headphone output
Eight-digit-microprocessor-display
Photo-Event Timer
Laser Communication (Transmitter
loud ringer for phone using ka2411
pll fm demodulator
Transformerless Power Supply
Digital Step-Km Counter
Three-terminal voltage regulator integrated fixed a typical wiring circuit



Top