tag:blogger.com,1999:blog-4569449258823101242009-11-09T05:06:35.912-08:00Valentinnoreply@blogger.comBlogger76125tag:blogger.com,1999:blog-456944925882310124.post-51668263262489562672008-03-09T03:08:00.000-07:002008-03-09T03:09:25.833-07:00

This document describes how to use the Photodiode PGA PICtail Daughter Board. It also discusses the other available tools that are designed to work with it. The overall outline is as follows: • Chapter 1: Overview – An introduction to the Photodiode PGA PICtail Daughter Board covering the kit contents, associated tools and how they work together. • Chapter 2: Set-Up Overview – Covers the

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-3656588831730512292008-03-09T03:05:00.000-07:002008-03-09T03:07:57.127-07:00

Photo sensors bridge the gap between light and electronics. Microchip’s Programmable Gain Amplifiers (PGAs) are not well suited for precision applications (such as CT scanners), but they can be effectively used in position photo sensing applications minus the headaches of amplifier stability. When the two, six or eightchannel PGA is used in this system, the other channels can be used for other

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-10196433051355887492008-03-09T03:04:00.000-07:002008-03-09T03:05:25.459-07:00

Although it is simple to measure temperature in a stand-alone system without the help of Microchip's Programmable Gain Amplifiers (PGA), a variety of problems can be eliminated by implementing temperaturesensing capability in multiplexed applications with a PGA. One of the main advantages is that you can eliminate a second signal path to the microcontroller and still maintain the accuracy of your

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-57170828491486543342008-01-30T10:41:00.000-08:002008-01-30T10:43:25.345-08:00

The LT1010 150mA power buffer is described in a number of useful applications such as boosted op amp, a feed-forward, a video line driver amplifier, wideband DC stabilized buffer, a fast sample-hold with hold step compensation, an overload protected motor speed controller, and a piezoelectric fan servo.Download document [PDF]

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-42921531330508013392008-01-30T10:37:00.000-08:002008-01-30T10:41:26.346-08:00

This document describes a wide range of useful applications for the LTC1043 dual precision instrumentation switched capacitor building block. Some of the applications described are lock-in amplifier, relative humidity sensor signal conditioner, ultra high performance instrumentation amplifier, charge pump F/V and V/F converters, wide range digitally controlled variable gain amplifier, LVDT signal

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-70419836593488500692008-01-29T11:45:00.000-08:002008-01-29T11:49:14.836-08:00

This document features several applications that demonstrate how to take full advantage of Linear Technology's delta sigma ADCs when interfacing to sensors. In many cases, signal conditioning can be greatly simplified or eliminated completely. This publication explains where it is appropriate to use amplifiers and how to optimize amplifier gain. Also included are discussions on measuring

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-58845110614426873412008-01-29T11:43:00.000-08:002008-01-29T11:45:15.289-08:00

This document is the fifth in a series that excerpts useful circuits from Linear Technology magazine. Data conversion, interface and signal conditioning circuits from issue VI:1 (February 1996) through issue VIII:4 (November 1998) are featured. Like its predecessor, AN67, this publication includes circuits for high speed video, interface and hot swap circuits, active RC and switched capacitor

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-66807552017281074312008-01-29T11:40:00.000-08:002008-01-29T11:42:12.182-08:00

This publication details a true 1ppm D-to-A converter. Total DC error of this processor corrected DAC remains within 1ppm from 18-32°C, including reference drift. DAC error exclusive of reference drift is substantially better. Construction details and performance verification techniques are included, along with a complete software listing.Download document [PDF]

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-89704530400433187042008-01-29T11:35:00.000-08:002008-01-29T11:40:27.003-08:00

Linear Technology's LTC2400 is the world's first 24-bit ADC in an SO-8 package. An innovative new delta-sigma architecture has been developed. The result is a small, highly accurate, simple-to-use delta-sigma ADC. This publication was created to educate users on several topics associated with delta-sigma converters and to dispel confusion associated with this new oneshot, or No Latency ΔΣ™

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-13546081723728730292008-01-29T11:32:00.000-08:002008-01-29T11:35:48.044-08:00

This document describes six low power differential-to-single-ended signal conditioning circuits for the LTC2400 No Latency ΔΣ™ 24-bit ADC. These circuits offer the customer a number of choices for conditioning differential input signals as low as 5mV to as high as ±2.5V, as well as operation on a single 5V or ±5V supplies. Each circuit description also covers circuit design and implementation

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-48357077500118427132008-01-29T11:28:00.000-08:002008-01-29T11:31:57.514-08:00

DAC DC specifications are relatively easy to verify. AC specifications require more sophisticated approaches to produce reliable information. In particular, the settling time of the DAC and its output amplifier is extraordinarily difficult to determine to 16-bit resolution. This publication presents methods for 16-bit DAC settling time measurement and compares results. Appendices discuss

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-12139579868894094312008-01-29T11:22:00.000-08:002008-01-29T11:24:25.147-08:00

This document 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 grounding and ground planes, supply and reference bypassing, sampling clock generation, analog input signal conditioning, signal jitter and proper handling of the data outputs. A sample board layout is

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-30863424201016687312008-01-29T11:16:00.000-08:002008-01-29T11:22:01.588-08:00

This publication is a collection of circuits for data conversion, signal processing and interface from the first five years of Linear Technology. This document includes circuits such as fast video multiplexers for high speed video, an ultraselective bandpass filter circuit with adjustable gain, and a fully differential, 8-channel, 12-bit A/D system. The categories included in this document are

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-39104110011934351732008-01-29T11:12:00.000-08:002008-01-29T11:15:53.159-08:00

This document presents a wide variety of data acquisition circuits. The detailed circuit schematics cover 8-, 10-, and 12- bit ADC and DAC applications, parallel and serial digital interfaces, temperature sensing, battery monitoring, isolated interfaces, and connections to various popular microcontrollers and microprocessors. An appendix covers suggested voltage references.Download publication [

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-6205912923650275222008-01-29T11:08:00.000-08:002008-01-29T11:10:54.778-08:00

This publication consolidates the circuits from the first few years of Linear Technology magazine into one publication. Presented in the note are a variety of circuits ranging from a 50W high efficiency (>90%) switching regulator to steep roll-off filter circuits with low distortion to 12-bit differential temperature measurement systems.Download circuit collection [PDF]

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-86304298592933035952008-01-29T11:06:00.000-08:002008-01-29T11:08:34.142-08:00

A variety of measurement and control circuits are included in this publication. Eighteen circuits, including transducer signal conditioners, current sources, ultra low noise amplifiers, data converters, oscillators and power supplies are presented. The circuits emphasize precision specifications with relatively simple configurations.Download document [PDF]

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-48861499371755247552008-01-29T11:03:00.000-08:002008-01-29T11:06:28.103-08:00

This publication contains a collection of interface applications between various microprocessors/controllers and the LTC1290 family of data acquisition systems. This document is divided into sections specific to each interface.Download document [PDF]

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-7812332060340084352008-01-29T10:59:00.001-08:002008-01-29T11:00:31.642-08:00

A complete design for a data acquisition card for the IBM PC is detailed in this application note. Additionally, C language code is provided to allow sampling of data at speed of more than 20kHz. The speed limitation is strictly based on the execution speed of the "C" data acquisition loop. A "Turbo" XT can acquire data at speeds greater than 20kHz. Machines with 80286 and 80386 processors can go

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-61847456410221022652008-01-29T10:57:00.000-08:002008-01-29T10:59:22.038-08:00

This publication describes a Linear Technology "Half-Flash" ADC, the LTC1099, being connected to a 256 element line scan photodiode array. This technology adapts itself to handheld (i.e., low power) bar code readers, as well as high resolution automated machine inspection applications.Download document [PDF]

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-84908465524197081262008-01-29T10:52:00.000-08:002008-01-29T10:57:16.463-08:00

This publication contains a collection of interface applications between various microprocessors/controllers and the LTC1090 family of data acquisition systems. This document is divided into sections specific to each interface.Download document [PDF]

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-30745845949057443582008-01-29T10:50:00.000-08:002008-01-29T10:52:35.857-08:00

A tutorial on SAR type A/D converters, this note contains detailed information on several 12-bit circuits. Comparator, clocking, and preamplifier designs are discussed. A final circuit gives a 12-bit conversion in 1.8µs. Appended sections explain the basic SAR technique and explore D/A considerations.Download document [PDF]

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-78497347579087744392008-01-29T10:49:00.000-08:002008-01-29T10:50:38.479-08:00

1.5V powered circuits for complex linear functions are detailed. Designs include a V/F converter, a 10-bit A/D, sample-hold amplifiers, a switching regulator and other circuits. Also included is a section of component considerations for 1.5V powered linear circuits.Download document [PDF]

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-25443284744036424912008-01-29T10:45:00.000-08:002008-01-29T10:49:49.324-08:00

Analog-to-digital conversion circuits (ADC) which directly digitize low level transducer outputs, without DC preamplification, are presented. Covered are circuits which operate with thermocouples, humidity sensors, strain gauges, level transducers and other sensors.Download document [PDF]

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-8363030044855502192008-01-29T10:38:00.000-08:002008-01-29T10:40:58.958-08:00

A good interconnect solution provides performance and cost benefits, ease of manufacturing, and meets or exceeds industry reliability requirements for any application. When the LGA component interconnect was introduced, board level manufacturers were given the task of incorporating the new component interconnect with their existing process. New interconnects often improve processing, but the

Valentinnoreply@blogger.com0tag:blogger.com,1999:blog-456944925882310124.post-88545355714814454652008-01-29T10:33:00.000-08:002008-01-29T10:38:24.033-08:00

This ink marks LTC’s eighth circuit collection publication. We are continually surprised, to the point of near mystification, by these circuit amalgams seemingly limitless appeal. Reader requests ascend rapidly upon publication, remaining high for years, even decades. All LTC circuit collections, despite diverse content, share this popularity, although just why remains an open question. Why is it

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