Wednesday, May 13, 2015


The JFET-input operational amplifiers in the TL07x series are designed as low-noise versions of the TL08x series amplifiers with low input bias and offset currents and fast slew rate. The low harmonic distortion and low noise make the TL07x series ideally suited for high-fidelity and audio preamplifier applications. Each amplifier features JFET inputs (for high input impedance) coupled with bipolar output stages integrated on a single monolithic chip.

  • Low Power Consumption
  • Low Input Bias and Offset Currents
  • Low Noise
  • High Input Impedance JFET Input Stage
  • High Slew Rate - 13 V/┬Ás Typ
  • Common-Mode Input Voltage Range Includes VCC+
Quadrature Oscillator - 100 kHz - TL072-TI - TL072-TI Opamp
Quadrature Oscillator - 100 kHz

Thursday, May 07, 2015

Build Your Own Microcontroller Projects

These pages created by Wichit Sirichote of  Department of Applied Physics, Faculty of Science, provides schematic and software for hobbyists to practice "learn by doing", build a simple microcontroller projects at home.

Build Your Own Microcontroller Projects

Some of the projects include - The 4 Channel Pt100 Thermometer, G5-Data Logger, Solar Recorder,    89S52 and PIC Project Board. Even circuits, code and SBC for the popular 8051 can be found here.

Build Your Own Microcontroller Projects

Dual Channel Digital Volt Meter

"I do remember the Intersil ICL7135 very clearly. This year 2011, almost 29 Years, the classic integrating type analog to digital converter is still interested. With a cheap price and easy interfacing, I think I will design a cheap digital volt meter with microcontroller to provide serial interface similar to the Fluke45. Two channels is good for scientific experiment."

Sunday, May 03, 2015

Xilinx - Programmable SoC and FPGA

They Design and Create Semiconductor Technologies and manufacture Devices like Programmable FPGAs and SoCs. These are programmable alternatives to to ASICs and ASSPs.

Xilinx - Programmable SoC and FPGA

Developer and fabless manufacturer of a class of reconfigurable hardware chips known as field-programmable gate arrays (FPGAs). It was founded by Ross Freeman (FPGA inventor), Bernie  Vonderschmitt (fabless pioneer), and Jim Barnett in 1984 and was based in Silicon Valley.
Product Line include Programmable FPGA, 3D IC, SoC, CPLD and Configuration Memory solutions. Embedded Processing, DSP and Connectivity Solutions. An extensive catalog of base-level cores is available to address the general needs of all designers.

Xilinx Zynq-7000 All Programmable SoC ZC702 Evaluation Kit

Xilinx Zynq-7000 All Programmable SoC

The Evaluation Kit includes all the basic components of hardware, design tools, IP, and pre-verified reference designs including a targeted design, enabling a complete embedded processing platform. The included pre-verified reference designs and industry-standard FPGA Mezzanine Connectors (FMC) allow scaling and customization with daughter cards.