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Analog to Digital A/D Circuits


12 Bit Converter upgrades ÁC's: 12/21/00 EDN-Design Ideas /  PDF contains multiple circuits - scroll to find this circuit

16 Bit AD Converter W /  RS232 Interface:

 

16 bit ADC provides 19 bit resolution: 02/21/2002  EDN - Design Ideas / Many data-acquisition systems require both high accuracy and a fast acquisition rate. These attributes allow the system to detect small data signals and to group more sensor channels into the same system. With more channels, the system can be smaller, less expensive, and less power-consuming. Long-distance optical communications and medical equipment, such as CT scanners, can benefit from... .

18 bit ADC uses PC's serial port: 09/27/2001 EDN - Design Ideas /  A PC usually requires a plug-in ADC card to process analog signals. However, with the circuitry in Figure 1, a PC can communicate with an 18-bit ADC through its serial port. The port provides both positive and negative power supplies as well as control signals. IC1 is an 18-bit MAX132 ADC with a serial interface.

2 Channel ADC Tags its own Output: 12/21/00 EDN-Design Ideas / PDF contains multiple circuits - scroll to find this circuit

24 Bit RGB Video Digitizer:

4 Channel 8 Bit Analog to Digital Converter for PC:

555 Timer As An A/D Converter: Measure voltages accurately with a microcontroller using this simple circuit. Includes sample program for the Parallax Basic Stamp

AD Converters Easily Interface With 70 Series Microprocessors: National Semiconductor Application Notes,09-Apr-1996

AD Easily Allows Many Unusual Applications: National Semiconductor Application Notes,04-Nov-1995

ADC 0804LCN 8bit A/D Converter:

ADC Circuit Optimizes Key Encoding: 02/04/99 EDN-Design Ideas  /  PDF contains multiple circuits - scroll to find circuit.

ADC enables temperature compensated weigh scale measurements: 07/05/2001 EDN - Design Ideas / You can provide temperature compensation in weigh-scale applications by simultaneously measuring both the temperature of the bridge and the primary output of the bridge transducer. Traditionally, an integrated multiplexer connects multiple input variables to a single sigma-delta ADC. Each time the multiplexer switches the input, the ADC must flush the digital filter of all data pertaining to t....

ADC helps Temperature Compensate Transducer: 12/21/00 EDN-Design Ideas / PDF contains multiple circuits - scroll to find this circuit

ADC Multiplexer Expander Works Transparently: 12/21/00 EDN-Design Ideas / PDF contains multiple circuits - scroll to find this circuit

ADC Shuts Down Analog Circuitry: 03/03/94 EDN-Design Ideas

ADC's Reference Improves RTD Measurements: 10/27/94 EDN-Design Ideas

ADCx RS232 Interface Schematic:

Analog input circuit serves any microcontroller: 12/20/2001 EDN - Design Ideas / (added 10/03)  The simple ADC in Figure 1 is perfect for getting analog signals into a purely digital microcontroller. Using just five surface-mount parts, you can assemble it for less than 50 cents (1000), which is approximately half the cost of a single-chip-ADC approach in the same volume. Moreover, this design takes only one pin from the microcontroller to operate. .

Analog to Digital Converter With Switching Preamplifier:

Applications of tHeadC1210 CMOS a / D Converter: National Semiconductor Application Notes,04-Nov-1995

Circuit provides reference for multiple ADCs: 01/24/2002  EDN - Design Ideas /  The achievable accuracy for systems with multiple ADCs depends directly on the reference voltages applied to the ADCs. Medical-ultrasound-imaging systems, for example, commonly include a large number of ADCs in the system's beam-former electronics, with the ADCs usually organized in groups of 16, 24, 32, and so on. .

CMOS a / D Converter Interfaces Easily With Many Microprocessors: National Semiconductor Application Notes,04-Nov-1995

Data Acquisition System Simplifies 5 Volt RTD to Digital Conversion: 12/07/00 EDN-Design Ideas / PDF contains multiple circuits - scroll to find this circuit

Differential Amp Drives highspeed ADC: 06/21/01 EDN-Design Ideas / PDF contains multiple circuits - scroll to find this circuit.

Digital PC Oscilloscope:

Four Channel 8 Bit Analog to Digital Converter for PC:

Improved amplifier drives differential input ADCs: 01/10/2002  EDN - Design Ideas /  ADCs with differential inputs are becoming increasingly popular. This popularity isn't surprising, because differential inputs in the ADC offer several advantages: good common-mode noise rejection, a doubling of the available dynamic range without doubling the supply voltage, and cancellation of even-order harmonics that accrue with a single-ended input. .

Improving a / D Converter Performance using Dither: National Semiconductor Application Notes,05-Aug-1995

Interface 20Bit SigmaDelta ADCs Through a PC's Parallel Port : 03/04/02 Electronic Design - Ideas for Design / In most sigma-delta analog-to-digital converter (ADC) applications, the serial data transfer occurs through a serial port. A microcontroller configures the serial port as required

Isolated ADC Reduces Power Consumption: 12/07/00 EDN-Design Ideas / PDF contains multiple circuits - scroll to find this circuit

Isolated, 12bit, 8 Channel, a / D Converter With PC Interface & 0.1% Accuracy:

Limiting Amplifier Makes Efficient a / D Converter Driver: 12/07/00 EDN-Design Ideas / PDF contains multiple circuits - scroll to find this circuit

Low Cost A/D Converter:

Low Power, Low Voltage ADC is 0.05% Linear: 06/19/97 EDN-Design Ideas

MicroPower ADC has Eight Differential Channels: 05/2297 EDN-Design Ideas

New, Low Cost, Sampled Data, 10 Bit CMOS a / D Converter: National Semiconductor Application Notes,04-Nov-1995

PICADC a Free, PIC Based "intelligent" a / D Converter:

Serial Port a / D Converter:

Simple Analogue to Digital Converter:

Simple circuit provides precision ADC interface : 08/21/03  EDN-Design Ideas / Real-world measurement requires the extraction of weak signals from noisy sources. High common-mode voltages are often present even in differential measurements. The usual approach to this problem is to use an op amp or an instrumentation amplifier and then perform some type of lowpass-filtering to reduce the background noise level....

Simple Flash A/D Converter:

Simple PWM ADC is Surprisingly Accurate: 06/09/94 EDN-Design Ideas

Temperature Sensor uses I2C isolator: 06/05/96 EDN-Design Ideas

Two ADC Channels Double Sensor Precision: 03/18/99 EDN-Design Ideas /  PDF contains multiple circuits - scroll to find this circuit

Two Channel ADC Tags its own Output: 12/21/00 EDN-Design Ideas /  PDF contains multiple circuits - scroll to find this circuit

Universal LowJitter Level Shifter Drives HighPerformance ADCs : 09/16/02 Electronic Design - Ideas for Design / This idea describes a circuit that converts a low-phase-noise sinusoidal signal into a low-jitter square wave, suitable to drive analog-to-digital converters (ADCs). The square wave's amplitude and average value are adjustable to comply with any...  

VCO Transforms Sound Card Into Precision DCCoupled ADC : 08/19/02 Electronic Design - Ideas for Design / Personal-computer sound cards are sometimes used for analog audio signal acquisition. Also, the Web features many free programs that implement virtual two-channel oscilloscopes by acquiring signals through the sound card. However, sound cards suffer...  

Zero Power a / D Converter uses Printer Port: 07/06/95 EDN-Design Ideas





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