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Converters: Digital to Analog (D / A) Circuits   Page 2
Digital to Analog Circuits:   # - A       B - C        H - N       O - Z

Converters -- Main Page
Last Updated on: Monday, October 03, 2011 06:07 PM


Circuits Designed by Dave Johnson, P.E. :

  • Caps Provide Voltage Boost To Series Regulator -  This circuit adds some capacitors and diodes to a traditional transformer type series regulator circuit to extend the normal operating range. It can insure regulation during low line voltage conditions or it can squeeze a few more watts out of a plug-in-the-wall power adapter power supply. …
     

  • Classic Plus & Minus DC Power Supply -  This is a classic example of a regulated DC power supply that produces both a positive 15v and a negative 15v from a 20vac wall adapter….


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:
Buffer adapts single ended signals for differential inputs -  2-Sep-04 Issue of EDN  DC coupling of single-ended signals into differential-input, single-supply ADCs can be challenging. The input signal requires level shifting from ground to VS/2 as well as single-ended-to-differential conversion. In addition, you must balance the differential inputs of the ADC to cancel even-order harmonics and common-mode noise.... [Design Idea by Randall Carver, Analog Devices Inc, Greensboro, NC]
Build Precise S/H Amps for Fast 12-Bit ADCs -  AN-271 Analog Devices Application Notes  (app note added 6/06)
Cascode Circuit Lessens DAC Degradation -  02/03/97 EDN-Design Ideas Current-output D/A converters usually deliver their best accuracy if the current-output (summing-junction) pin remains at a constant dc voltage, because of the finite output impedance of the current-out DAC output (Figure 1). Two sources contribute to the output impedance. One is the impedance of the R-2R ladder used to binary-scale the bit currents; the second is the nonlinear output impedance.... [Design Idea by Mark Shill, Burr-Brown, Tucson, AZ]
Centronics Port D/A converters & low-pass filter -  (design circuit added 8/02)
Choosing DACs for Direct Digital Synthesis -  AN-237-Analog Device Application Notes  (app note added 6/06)

Circuit Applications of Multiplying CMOS D to a Converters -  National Semiconductor Application Note  (app note added 2/06)
Circuit Applications of the AD7226 Quad CMOS DAC -  AN-317 Analog Devices Application Notes  (app note added 2/06) 
Circuit compensates system offset of a load-cell-based balance -  16-Aug-07 Issue of EDN  A dual DAC stores the system-offset voltage, which gets determined during a power-on calibration sequence.... [Design Idea by Luca Bruno, ITIS Hensemberger, Monza, Italy]
Circuit converts DAC's outputs from single ended to differential-mode -  8-Jun-06 Issue of EDN This design suits low-end ac applications or high-precision level-setting applications that rely on a single-ended current-output DAC.... [Design Idea by Liam Riordan, Analog Devices, Limerick, Ireland; Edited by Brad Thompson and Fran Granville]
Circuit Loads Eight Channel DAC from PC Port  -  08/03/95 EDN-Design Ideas  [Design Idea added 2/06] EDN is migrating links. This link is not verified.  Google the "title" EDN for new link.
CMOS D/A Converters Match Most Microprocessors -  National Semiconductor Application Note 04 Nov1995 / (app note added 7/02)
CMOS DACs act as digitally controlled voltage dividers -  26-Jun-08 Issue of EDN  You can employ a DAC to operate as a digitally programmable resistor from a single supply.... [Design Idea by John Wynne and Liam Riordan, Analog Devices, Limerick, Ireland]
CMOS Multiplying DAC Based Panning Circuit Provides Almost Constant Output Power -  AN-206 Analog Devices Application Notes  (app note added 2/06)  Audio signal processing sometimes requires splitting or "panning" a single signal source into multiple channels.  This application note describes how CMOS M-DACs can control the relative signal levels of the derived channels.
CMOS Multiplying DACs & Op Amps Combine to Build Programmable Gain Amplifier, Part 1 -  AN-320B Analog Devices Application Notes  (app note added 2/06) 
Combine two 8-bit outputs to make one 16-bit DAC -  30-Sep-04 Issue of EDN  Inexpensive, 16-bit, monolithic DACs can serve almost all applications. However, some applications require unconventional approaches.  This Design Idea design concerns circuitry I recently designed for a tunable-diode laser spectrometer for a Mars-exploration application. The control circuitry included two 16-bit DACs that interface to the radiation-hardened, 8051-variant 69RH051A microcontroller.... [Design Idea by Steve Woodward, Chapel Hill, NC]
Companion Code AN-759  -  AN-759 Analog Devices Application Notes  (app note added 2/06) 
Comparator/ DAC Combinations Solve Data Acquisition Problems -  Maxim Application Notes / 647 / Oct-04  (app note added 5/08)
Control 32 DAC channels via a parallel port -  12/31/69 EDN-Design Ideas  Occasionally, a system needs several digitally programmable voltage-output channels. Such output channels typically provide the control for robot positioning, industrial processes, and even home automation. The circuit in Figure 1 controls 32 voltage-output channels from the parallel port of a PC....[File contains multiple circuits.  Scroll to find this one.].... [Design Idea by Mark A Shill, Burr-Brown Corp, Tucson, AZ]
Control Applications of CMOS DACs -  National Semiconductor Application Note  (app note added 2/06)
Coupling a Single-Ended Clock Source to the Differential Clock Input of Third-Generation TxDAC® & TxDAC+® Products -  AN-642 Analog Devices Application Notes  (app note added 2/06) 
Create a DAC from a microcontroller's ADC -  3-Dec-09 Issue of EDN  Use a microcontroller's ADC in the feedback loop.... [Design Idea by Vardan Antonyan, Glendale, CA]


Digital to Analog Circuits:   # - A       B - C     D-G      H - N       O - Z
Converters -- Main Page

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