Mixed and Interface Circuits : Most of the sensor interface and instrument inputs are analog; even if it event based like a limit switch, analog circuit protection and signal conditioning is required before it reaches the level sensitive digital circuit blocks. Starting with Schmitt triggers and to the VCO and A-D Converters, are grades of Mixed Circuits. I feel Comparators like LM339, Timers like the 555 and Phase Locked Loop PLL are fundamental mixed circuits as they have a analog voltage detection. DSP and uC with built in A-D or D-A or even SOC are Public ASICs and Fall in [Read More ....]
4-20mA Conditioning – XTR101 TI BB
Analog Design, Process Control
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Mar 092009
4-20mA Conditioning – XTR101 TI BB These are Burr Brown Devices from TI. The BB Chips are excellent devices and High Precision, but a bit more expensive. These can be used when customer demands a Higher Quality and Precision. These are good for High Reliability Industrial Instrumentation. – delabs From TI Data Sheets – The XTR101 is a microcircuit, 4-20mA, two-wire transmitter containing a high accuracy instrumentation amplifier (IA), a voltage-controlled output current source, and dual-matched precision current reference. The XTR106 is a low cost, monolithic 4-20mA, two-wire current transmitter designed for bridge sensors. It provides complete bridge excitation (2.5V [Read More ....]
ADS7816 – 12-Bit High Speed Sampling AD
Design, Integrated Circuits
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Mar 092009
ADS7816 – 12-Bit High Speed Sampling AD The ADS7816 is a 12-bit, 200kHz sampling analog to- digital converter. It features low power operation with automatic power down, a synchronous serial interface, and a differential input. The reference voltage can be varied from 100mV to 5V, with a corresponding resolution from 24mV to 1.22mV. – From TI Applications l 200kHz SAMPLING RATE l MICRO POWER: 1.9mW at 200kHz 150mW at 12.5kHz l POWER DOWN: 3mA Max l 8-PIN MINI-DIP, SOIC, AND l DIFFERENTIAL INPUT l SERIAL INTERFACE 12-Bit High Speed Micro Power Sampling Analog-to-Digital converter
Intusoft – Analog and Mixed-Signal Circuit Design Tools SPICE Simulation, Analog and Mixed-Signal Circuit Design Tools, Magnetics Transformer Design Software, and Test Program Software Established in 1985, Intusoft designs and markets today’s leading analog and mixed-signal design automation tools, backing each product with the industry’s most extensive service and support program. Free SPICE3-based Analog & Mixed Signal Simulation Software Technical Articles SPICE Models
Aug 252008
School of Analog Design Switching Regulator Fundamentals Objective: Be able to identify the three basic switching regulator configurations and know where each one is used. The course includes inductive switching regulator power stage definition, input, output and duty cycle relationships. Current Feedback Operational Amplifier Objective: This training module discusses the current feedback operational amplifier (CFB op amp). There will be a brief background of the current feedback op amp. DC to DC Converter Basics Objective: This course will teach the basics of linear, inductive, switched capacitor DC to DC converter products from Portable Power Systems perspective. Knowledge Base Design Tools
Jul 122008
National Semiconductor – Application Notes Application Briefs Amplifiers/Buffers/Comparators References Power Management Display Circuits Data Converters I just found the National Semi – News Tweets National Semiconductor – Tweeter
