Tuesday, July 12, 2016
"While in the process of reviewing Texas Instruments applications notes, including those from the recently acquired Burr-Brown - I uncovered a couple of treasures, this handbook on active RC networks and one on op amp applications. These old publications, from 1966 and 1963, respectively, are some of the finest works on op amp theory that I have ever seen. Nevertheless, they contain some material that is hopelessly outdated. This includes everything from the state of the art of amplifier technology, to the parts referenced in the document - even to the symbol used for the op amp itself:"
Handbook of Operational Amplifier Applications - PDF
by Bruce Carter and Thomas R. Brown - sboa092a.pdf - 2.1 Mb
The operational amplifier is an extremely efficient and versatile device. Its applications span the broad electronic industry filling requirements for signal conditioning, special transfer functions, analog instrumentation, analog computation, and special systems design. The analog assets of simplicity and precision characterize circuits utilizing operational amplifiers.
Handbook of Operational Amplifier Active RC Networks - PDF
by Bruce Carter and L.P. Huelsman - sboa093a.pdf - 3.6 Mb
This is a handbook on active RC networks. The first question about this subject that one might ask is, "What is an active RC network?" The answer is simple. It is collection of resistors, capacitors, and an active element (or elements). Viewed in another sense; it is a circuit without inductors. Why leave out inductors? There are many reasons. First of all, the inductor is a relatively large and heavy element. This is especially true at frequencies in the audio range and below.
Monday, June 06, 2016
This book provides complete coverage of important analog devices and how to use them in designing linear circuits, and serves as a useful learning tool and reference for design engineers involved in analog and mixed-signal design.
Linear Circuit Design Handbook - Hank Zumbahlen
Sensors, RF/IF Circuits, Converters. Analog Filters. Power Management and …
- Chapter 5: Fundamentals of Sampled Data Systems
- Chapter 7: Data Converter Support Circuitry
- Chapter 11: Overvoltage Effects on Analog Integrated Circuits
- Chapter 12: Printed Circuit Board (PCB) Design Issues
Sunday, June 05, 2016
Walt Jung - OpAmp Applications Handbook
In the past several years, many advances have been made in operational amplifiers and the latest op amps have powerful new features, making them more suitable for use in many products requiring weak signal amplification, such as medical devices, communications technology, optical networks, and sensor interfacing.
Walt Jung, analog design guru and author of the classic IC OP-Amp Cookbook (which has gone into three editions since 1974), has now written what may well be the ultimate op amp reference book.
As Jung says, “This book is a compendium of everything that can currently be done with op amps.” This book is brimming with up-to-date application circuits, handy design tips, historical perspectives, and in-depth coverage of the latest techniques to simplify op amp circuit designs and improve their performance.
Analog Dialogue: Analog Devices
See Application Notes too on Amplifiers and Comparators, Current Sense Amplifiers, Differential Amplifiers, Instrumentation Amplifiers, Isolation Amplifiers.
Wednesday, March 16, 2016
CA3130 has the additional Merit of swinging to the rails, if you are on a +/- 12V supply, the output will be +/-12V. This is a feature required in control applications.
These devices are now available with Intersil.
CA3140 -4.5MHz, BiMOS Operational Amplifier with MOSFET Input/Bipolar Output
The CA3140A and CA3140 BiMOS operational amplifiers feature gate protected MOSFET (PMOS) transistors in the input circuit to provide very high input impedance, very low input current, and high speed performance. The CA3140A and CA3140 operate at supply voltage from 4V to 36V (either single or dual supply).
A voltage regulator that uses CA3130 - Range 0.1 to 50V at 1 Amp.
CA3130 - 15MHz, BiMOS Operational Amplifier with MOSFET Input/CMOS Output
"15MHz, BiMOS Operational Amplifier with MOSFET Input/CMOS Output
A CMOS transistor-pair, capable of swinging the output voltage to within 10mV of either supply-voltage terminal (at very high values of load impedance), is employed as the output circuit."
Applications - Ground-Referenced Single Supply Amplifiers, Fast Sample-Hold Amplifiers, Long-Duration Timers/Monostables.
Wednesday, January 06, 2016
Linear Technology Circuit Two Op Amp Instrumentation Amplifier
I measure Instrumentation Amplifier like this - Tera Ohms Impedance, Pico Amps Bias Current. Micro Volts Offset Voltage. Here is a Interactive demo i built for such a configuration. The Input Impedance of this module is very high and is symmetric. This circuit can be used for strain gauges and for four wire measurements. If inputs are in mV use OP07. The merit is that it uses only 2 OpAmps yet has high differential Input Impedance.
Dual Op-Amp Differential Amp Tutorial
The Outputs of Opamps are low impedance but still have limits they cannot drive more than a few mA of Current into the Load. If low ohmic value loads are to be applied use external transistors as amplifiers. If inputs Vn-Vp are floating, outputs may be random or oscillating, it is good to have a bias network of 10M resistors to a potential even zero or common, this enables some Vout when input floats.
Wednesday, May 13, 2015
- Low Power Consumption
- Low Input Bias and Offset Currents
- Low Noise
- High Input Impedance JFET Input Stage
- High Slew Rate - 13 V/µs Typ
- Common-Mode Input Voltage Range Includes VCC+
Thursday, January 14, 2010
Advanced Linear Devices ALD - Precision CMOS IC
Some Products Like -
- Ultra-low Input Signal Power Rail-to-Rail CMOS OpAmps
- Ultra-low Charge Injection Low Voltage Analog Switches
- High resolution Dual Slope Integrating Analog Processors
- ±5 1/2 Digit DVM Digital Voltmeter Boards
"These modules capture residual energy as a by-product of a natural environmental phenomenon or industrial process, storing and and conditioning the energy for use at a later time."
ALD's mixed signal ASIC design
ALD's standard linear product as Breadboard Design Kit for Mixed Analog/Digital ASIC. Includes Opamps, Comparators, Mosfets etc. Create a Function-Specific Mixed ASIC chip.
Advanced Linear Devices, Inc
415 Tasman Drive, Sunnyvale California 94089
Wednesday, December 09, 2009
"The Rejustor, from Microbridge, is an electrically adjustable resistor that can be precisely adjusted, in-circuit, to calibrate and compensate analog circuits and systems. Low-TCR Rejustors are resistance-only adjustable, available in standard and low-power duals and low-power singles."
Products Include - Sensors and Micro Flow Sensors and Sensor Conditioning with Rejustors.
Tuesday, December 05, 2006
They require low supply current yet maintain a large gain bandwidth product and fast slew rate. In addition, well matched high voltage JFET input devices provide very low input bias and offset currents.
LF353 - Wide Bandwidth Dual JFET Input Operational Amplifier
- Gain Bandwidth 4 MHz
- Slew Rate 13 Volts/usec
- Offset Voltage 10 mV
- Low Input Bias Current: 50pA
- High Input Impedance: 1 Tera Ohms