New 14-Bit 800ksps ADC Upgrades 12-Bit Systems with 81.5db Sinad 95db Sfdr:  DN159  Design Notes (Linear Technology) (app note added 1/06)

New 16-Bit 100ksps A/D Converter Runs on 5V Supply:  DN165  Design Notes (Linear Technology) (app note added 1/06)

New 500ksps and 600ksps ADCs Match Needs of High Speed Applications:  DN88  Design Notes (Linear Technology) (app note added 1/06)

New 5V and 3V 12-Bit ADCs Sample at 300kHz on 75mw and 140kHz on 12mw:  DN66  Design Notes (Linear Technology) (app note added 1/06)

New Low Cost Sampled Data 10 Bit CMOS A/D Converter:  National Semiconductor Application Note 04-Nov-1995 (app note added 4/02)

Obtaining the Best Performance from the AD7893, 12-Bit Serial A/D Converter:  AN-381 Analog Devices Application Notes  (app note added 2/06)

Operation and Applications of the AD654 IC V-to-F Converter:  AN-278 Analog Devices Application Notes  (app note added 2/06)

Overcoming Converter Nonlinearities with Dither:  AN-410 Analog Devices Application Notes  (app note added 2/06)

Parallel Port Powers Simple A/D Interface :  10/23/97 EDN Design Ideas /  (added 6/06)

Passive Component Selection and Dynamic Modeling for the AD2S80 Series Resolver to Digital Converter:  AN-266 Analog Devices Application Notes  (app note added 2/06)

PC Serial Port Drives 12 Bit A / D Converter:  Maxim Application Notes / 151 / Dec-07  (app note added 6/06)

Peak-to-Peak Resolution Versus Effective Resolution:  AN-615 Analog Devices Application Notes  (app note added 2/06)  This application note describes effective resolution and peak-to-peak resolution and highlights the difference between these two specifications.

Phase Controlled Lighting System:  This project was developed to provide some pleasant room lighting as the author was fed up with inflexible standard incandescent light bulbs used in most rooms. Specifically it details the use of five Low Voltage Lamp units as up-lighters placed around a room. Each lamp can be turned on/off individually and all lamps can be dimmed from full brightness down to zero brightness. Figure 1 shows one of the lamps mounted to a wall. (added 1/06)

PIC ADC a Free PIC Based Intelligent A/D Converter:  (design circuit added 8/02)

Pin Compatible High Speed ADCs Simplify Design Tasks:  AN-803 Analog Devices Application Notes  (app note added 2/06)

Pipeline ADCs Come of Age:  Maxim Application Notes / 634 / Jan-08  (app note added 6/06)

Precision Circuit Closely Monitors 48V Bus:  10/17/02 EDN Design Ideas  /  (added 1/05)  Ever-greater complexity in communications systems has spurred a need for power-supply management. POTS (plain-old telephone systems) obtain power from –48V supplies backed by arrays of batteries in central offices and distributed throughout copper lines. Although nominally –48V, the voltage on the lines can vary from –40 to –80V, and the voltage is subject to surges and ......

Printer Port Controls A/D Conversion:  12/19/96 EDN-Design Ideas / (added 6/06)

PulSAR® Input Range Software:  PulS Analog Devices Application Notes  (application note added2/06)

PWM ADC is Surprisingly Accurate:  06/09/94 EDN-Design Ideas / (added 3/03)  The reference voltage in Fig 1a's simple rail-to-rail PWM ADC is the only critical component. The input-voltage range extends from ground to the power rail which also acts as the reference. The circuit is essentially a variation on the classic dual-slope integrator, the slopes being proportional to VIN and VREF-VIN. The circuit works well in µP-based systems that have the spare capacity to perform the mark/space measurement and the necessary calculations.....   

Real-Time Solutions using Mixed-Signal Front-End Devices with the Blackfin® Processor:  EE-236 Analog Devices Application Notes  (app note added 2/06)

Rearranged reference helps ADC measure its own supply Voltage:  04/28/05 EDN Design Ideas  / (added 6/06)  Clever topology allows self-measurement of power supply rail.

Reducing the power Requirements of Comlinear CLC949 support Circuitry:  National Semiconductor Application Note   (app note added 2/06)

Reference Board Design ADE7755 :  ADE7755 Analog Devices Application Notes  (app note added 2/06)  In Gerber Format

Reference Board Design in Gerber Format AD7751 :  AD7751 Analog Devices Application Notes  (app note added 6/06)

Reference Voltage for Multiple ADCs:  Maxim Application Notes / 994 / May-08  (app note added 6/06)

References for A/D Converters:  National Semiconductor Application Note   (app note added 2/06)

Replacing Output Clamping Op Amps with Input Clamping Amps:  AN-402 Analog Devices Application Notes  (app note added 2/06)  So far most clamping amplifiers have relied upon an output clamping architecture and are called output clamp amps (OCAs)  . A new architecture called an input clamp amp (ICA)   offers superior clamping accuracy and lower distortion.

Resolver to Digital Conversion; Simple Alternative to Optical Shaft Encoders:  AN-263 Analog Devices Application Notes  (app note added 2/06)

RMS Calculations for Energy Meter Applications using the ADE7756:  AN-578 Analog Devices Application Notes  (app note added 2/06)  The document describes the implementation of an rms signal processing algorithm using the ADE7756 and a Microcontroller (PIC16C63)   from Microchip.

Sampled Systems and the Effects of Clock Phase Noise and Jitter:  AN-756 Analog Devices Application Notes  (app note added 2/06)

Selecting a Low Bandwidth Σ-Δ ADC:  AN-607 Analog Devices Application Notes  (app note added 3/06)

Serial Port A/D Converter:  (design circuit added 8/02)

Serial Port A/Dconverter:  (circuit / schematic design added 6/06)

Serial Port Drives 12 BitADC:  10/12/95 EDN-Design Ideas / (added 6/06) 

Setup Tests 68HC11 µP's Internal A/D Converter:  10/13/94 EDN Design Ideas /  (added 2/06) 

Shielding and Guarding:  AN-347 Analog Devices Application Notes  (app note added 2/06)  How to Exclude Interference-Type Noise. What to do and Why to do it-A Rational Approach

Sigma-Delta ADCs and DACs:  AN-283 Analog Devices Application Notes  (app note added 2/06)  Overview of Sigma-Delta Concepts: Oversampling, Noise Shaping Using the Sigma-Delta Modulator, Digital Filtering and Decimation.

Simple ADC is Surprisingly Accurate:  06/09/94 EDN Design Ideas /  (added 11/05)

Simple Analog-to-Digital Converter:  Normally analogue-to-digital con-verter (ADC) needs interfacing through a microprocessor to convert analogue data into digital format. This requires hardware and necessary software, resulting in increased complexity and hence the total cost. The circuit of A-to-D converter shown here is configured around ADC 0808, avoiding the use of a microprocessor…. (added 10/04)

Simple Circuit Provides Precision ADC Interface:  08/21/03 EDN Design Ideas  /  (added 1/05)  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 Circuit Provides Ratiometric Reference Levels for AD782X Family of Half-Flash ADCs:  AN-299 Analog Devices Application Notes  (app note added 2/06)

Simple PWM ADC is Surprisingly Accurate:  06/09/94 EDN-Design Ideas / (added 3/03)  The reference voltage in Fig 1a's simple rail-to-rail PWM ADC is the only critical component. The input-voltage range extends from ground to the power rail which also acts as the reference. The circuit is essentially a variation on the classic dual-slope integrator, the slopes being proportional to VIN and VREF-VIN. The circuit works well in µP-based systems that have the spare capacity to perform the mark/space measurement and the necessary calculations.....   

Simple, Cost Effective A/D Conversion using COP888ek:  National Semiconductor Application Note   (app note added 2/06)

Simplify A/D Converter Interface with Software (TC7135):  Microchip Application Note Published 26-Sep-03   (app note added 2/06)

Single Chip Data Acquisition System Simplifies Analog-To-Digital Conversion:  National Semiconductor Application Note   (app note added 2/06)

Single IC adds analog inputs to digital PLC:  05/11/95 EDN-Design Ideas / (added 2/06)

Single Supply RS-232 Interface for Bipolar to D Converters:  DN29  Design Notes (Linear Technology) (app note added 1/06)

Software Code EE-162 :  EE-162 Analog Devices Application Notes  (app note added 2/06)

Software Code EE-236 :  EE-236 Analog Devices Application Notes  (app note added 2/06)

Software Code EE-245 :  EE-245 Analog Devices Application Notes  (app note added 2/06)

Software Code EE-247 :  EE-247 Analog Devices Application Notes  (app note added 2/06)

Software Code EE-248 :  EE-248 Analog Devices Application Notes  (app note added 2/06)

Software Download AN-578:  Soft Analog Devices Application Notes  (app note added 2/06)  This program controls and reads data from The Analog Devices ADE7756 Single Phase, Bi-Directional Power/Energy IC to measure Active Energy, Voltage RMS and Current RMS. Use it in conjunction with Application note AN-578.

Software Download AN-624 :  Soft  Analog Devices Application Notes  (app note added 2/06)  This program controls and reads data from the Analog Devices ADE7754 Polyphase energy metering IC to perform the calibration of a three-phase energy meter. It is designed for use with the EVAL-ADE7754EB (evaluation board)  . Use it in conjunction with Application note AN-624. (zip, 12,834,788 bytes) 

Sometimes One Capacitor is Better Than Two:  06/05/00 EDN-Design Ideas / (added 1/06)  Many A/D converters use an internal resistor ladder as a two-point differential voltage reference in the conversion. This method demands that these two nodes remain steady. The higher the resolution, the stronger the demand for quiet voltages. Figure 1 depicts a simplified schematic of the LM985XX reference ladder.....

Specifying A/D and D/A Converters:  National Semiconductor Application Note   (app note added 2/06)

Speed Measurement and Control with the AD2S83, Silicon Tachogenerator:  AN-236 Analog Devices Application Notes  (app note added 2/06)

TB010: Adding a Simple 4-Channel 8-Bit A/D to a PIC17c4x:  Microchip Application Note Published 26-Aug-97   (app note added 6/06)

Temperature measurement scheme uses IR sensor and sigma delta ADC:  04/03/03  EDN-Design Ideas / (added 9/03) Many noncontact temperature-measurement systems use infrared sensors, such as thermopiles, which can detect small amounts of heat radiation. Biomedical thermometers that measure the temperature of an ear or a temple use noncontact temperature measurement, as do automotive-HVAC systems that adjust temperature zones based on the body temperature of passengers...

Temperature measurement scheme uses IR sensor and sigma delta ADC:  04/03/03 EDN Design Ideas  /  (added 6/06)  Many noncontact temperature-measurement systems use infrared sensors, such as thermopiles, which can detect small amounts of heat radiation. Biomedical thermometers that measure the temperature of an ear or a temple use noncontact temperature measurement, as do automotive-HVAC systems that adjust temperature zones based on the body temperature of passengers....

Temperature Sensor uses I2c Isolator:  06/06/96 EDN Design Ideas  / (added 6/03)  You can couple an LM75 digital output-temperature sensor through an isolated I2C (interintegrated circuit) interface (see Reference) as shown in Figure 1. Electrically isolating the sensor allows operation in situations prone to high common-mode voltages; it's also useful in breaking ground loops. IC1 and IC2 comprise a bidirectional isolator.

Temperature-measurement scheme uses IR sensor and sigma-delta ADC:  04/03/03 EDN Design Ideas (added 1/05)  Many noncontact temperature-measurement systems use infrared sensors, such as thermopiles, which can detect small amounts of heat radiation. Biomedical thermometers that measure the temperature of an ear or a temple use noncontact temperature measurement, as do automotive-HVAC systems that adjust temperature zones based on the body temperature of passengers....

Test Video A/D Converters Under Dynamic Conditions:  AN-297 Analog Devices Application Notes  (app note added 2/06)

Testing Linearity of the LTC2400 24-Bit No Latency Delta SigmaTM A/D Converter Help from the Nineteenth Century:  Design Solutions 11  Design Notes (Linear Technology)  (app note added 6/06)

The A/D Easily Allows Many Unusual Applications:  National Semiconductor Application Note   (app note added 2/06)

The ABCs of ADCs: Understanding How ADC Errors Affect System Performance:  Maxim Application Notes / 748 / Apr-09  (app note added 6/06)

The Alexander Current-Feedback Audio Power Amplifier:  AN-211 Analog Devices Application Notes  (app note added 2/06)

The Care and Feeding of High Performance ADCs: Get All the Bits You Paid For:  AN71 Linear Technology This application note describes proper techniques for applying high performance ADCs. It describes the problems designers encounter, how to recognize their symptoms and how to avoid them. Topics include ground planes and grounding, supply and reference bypassing, analog input signal conditioning, sampling clock generation, signal jitter and proper handling of the data outputs. A sample board layout is provided as well as performance curves showing the effects of correct and incorrect application.

The LTC1096 and 1098: Micropower SO-8 8-Bit ADCs Sample at 1kHz on 3µA of Supply Current:  DN60  Design Notes (Linear Technology) (app note added 1/06)

The PGA on Sigma-Delta ADCs:  AN-610 Analog Devices Application Notes  (app note added 2/06)  The AD7708/AD7718,AD7709,AD7719,AD7782/AD7783 high resolution Sigma-Delta ADCs all feature a Programmable Gain Amplifier (PGA)  at the input to the Sigma-Delta modulator. This Application Note discusses the use and benefits of this PGA.

Two ADC Channels Double Sensor Precision:  03/18/99 EDN-Design Ideas / (added 5/03) The accuracy of the on-chip ADCs of numerous small and inexpensive 8-bit µPs is well-suited for many applications. However, some situations benefit from just a little more accuracy from a resistive position sensor, for example. The resistive circuit in Figure 1 uses two ADC pins on a µP to double the precision of a resistive position sensor. In effect, the 8-bit ADC becomes a 9-bit ADC. The resistive part of the circuit shown in Figure 1 costs as little as $3; the cost is higher if you use a precision potentiometer as the position sensor.

Two Channel ADC Tags Its Own Output:  04/28/94 EDN-Design Ideas / (added 11/05)

Two Wire Communication Using LabVIEW:  Maxim Application Notes / 1190 / May-03  (app note added 6/06)

Two wires control SPI high-speed ADC:  11/10/05  EDN Design Ideas  /  (added 10/06)  Inverters substitute for an SPI ADC's chip-select line.

Understanding A/D Converter Performance Specifications:  Microchip Application Note Published 4-Apr-00   (app note added 2/06)

Understanding Flash ADCs:  Maxim Application Notes / 810 / Sep-09  (app note added 6/06)

Understanding Integrating ADCs:  Maxim Application Notes / 1041 / Oct-09  (app note added 6/06)

Understanding Pipelined ADCs:  Maxim Application Notes / 383 / Nov-09  (app note added 6/06)

Understanding SAR ADCs:  Maxim Application Notes / 387 / Dec-09  (app note added 6/06)

Understanding Single Ended, Pseudo Differential & Fully Differential ADC Inputs:  Maxim Application Notes / 1108 / Jan-10  (app note added 6/06)

Using 555 Timer as an A/D Converter:  (electronic circuit added 4/05)

Using Absolute Output iMEMS® Gyroscopes with Ratiometric ADCs:  AN-767 Analog Devices Application Notes  (app note added 6/06)

Using Analog Temperature Sensors with ADCs:  App Note 571: Maxim IC  (application note added6/06)

Using Sigma-Delta Converters-Part 1:  AN-388 Analog Devices Application Notes  (app note added 2/06)  When to Use/How to Use Sigma-Delta ADCs

Using Sigma-Delta Converters-Part 2:  AN-389 Analog Devices Application Notes  (app note added 2/06)  When to Use/How to Use Sigma-Delta ADCs; Continuation of Part 1 Discussion.

Using the AD2S80 Series Resolver to Digital Converters with Synchro's; Solid State Scott-T Circuit.:  AN-252 Analog Devices Application Notes  (app note added 2/06)

Using the AD2S80 Series Resolver-to-Digital Converters as Control Transformers:  AN-203 Analog Devices Application Notes  (app note added 2/06)

Using the AD650 Voltage-to-Frequency Converter as a Frequency-to-Voltage Converter:  AN-279 Analog Devices Application Notes  (app note added 2/06)

Using the AD771X Family of 24-Bit Sigma-Delta A/D Converters:  AN-406 Analog Devices Application Notes  (app note added 2/06)

Using the AD7782 in Low Power Applications:  AN-614 Analog Devices Application Notes  (app note added 2/06)  This application note describes how to use the AD7782 in portable or low power applications.

Using the AD7877 Touch Screen Controller and the Intel PXA250 Processor Under Windows CE.NET:  AN-738 Analog Devices Application Notes  (app note added 2/06)

Using the ADC0808/ADC0809 8-Bit µP Compatible A/D Converters with 8-Channel Analog Multiplexer:  National Semiconductor Application Note   (app note added 2/06)

Using the Analog-to-Digital Converter:  Microchip Application Note Published 26-Aug-97   (app note added 2/06)

Using the COP8ACC with Integration A/D Application Considerations:  National Semiconductor Application Note   (app note added 2/06)

Using the MCP320x 12-Bit Serial A/D Converter with Microchip Picmicro® Devices:  Microchip Application Note Published 22-Nov-99   (app note added 2/06)

Using the Noise Reduction Feature on the AD7877:  AN-766 Analog Devices Application Notes  (app note added 2/06)

Video Formats and Required Load Terminations:  AN-205 Analog Devices Application Notes  (app note added 2/06)

Wide-Dynamic-Range A/D Converters Pave the Way for Wideband Digital Radio Receivers:  11/07/96 EDN-Design Feature / (added 11/05)  With recent advances in data conversion, mixers, and DSPs, digital radios are becoming more commonplace. But what are digital radios, how do they work, and how do they differ from analog radios?—Brad Brannon, Analog Devices Inc

Zero Power A/D Converter uses Printer Port:  07/06/95 EDN-Design Ideas / (added 11/05) You can use a desktop or laptop PC to monitor physical variables such as temperature or pressure. A convenient way to do this is to connect an A/D converter through the ubiquitous Centronics printer port (Fig 1). The current requirement of the ADC0804LCN used here is less than 1.5 mA at 5V supply voltage with a 640-kHz clock. Tristate-buffer 74HC244 multiplexes 8 bits of A/D-converter data through 4 bits (54 through 57) of the status port of the printer adapter....