Tuesday, June 07, 2011

Data, Media and Telecommunications Standards

ETSI - European Telecommunications Standards - ETSI produces globally-applicable standards for Information and Communications Technologies (ICT). Includes - Fixed, mobile, radio, converged, broadcast and internet technologies.

ITU-T - Infocommunications Standards - "ITU-T Recommendations are defining elements in information and communication technology (ICT) infrastructure. Whether we exchange voice, data or video messages, communications cannot take place without standards linking the sender and the receiver. See " Telecommunication Standardization Bureau" TSB

CDG - 3G Wireless CDMA Development - "The CDMA Development Group (CDG), founded in December 1993, is an international consortium of companies who have joined together to lead the adoption and evolution of 3G CDMA wireless systems around the world." See also CDMA Technology

3GPP - Mobile Broadband Standard - "The original scope of 3GPP was to produce Technical Specifications and Technical Reports for a 3G Mobile System based on evolved GSM core networks ..." Global System for Mobile communication (GSM), GPRS and EDGE.

IEEE - Broadband Wireless Access Standards - "The IEEE 802.16 Working Group on Broadband Wireless Access is creating the IEEE 802.16 family of WirelessMAN Standards for Wireless Metropolitan Area Networks."

HSPA - Mobile Broadband GSM 3G

HSPA (High Speed Packet Access) is like having your home cable broadband experience delivered to your mobile phone or notebook.

HSPA - Mobile Broadband GSM 3G

HSDPA - High Speed Downlink Packet Access - the ability to receive large files to your mobile device such as email attachments, PowerPoint presentations or web pages.

HSUPA - High Speed Uplink Packet Access - this is a further enhancement to increase the speed by which you communicate from your mobile device.

  • High-Speed Downlink Packet Access
  • High-Speed Uplink Packet Access
  • MC8790 Sierra Wireless Embedded Module

Monday, June 06, 2011

Exar Corporation - Communications Semiconductors

T/E/J, SDH/SONET and OTN product portfolio. Carrier Ethernet and OTN System-on-Chip solutions include carrier proven DeviceManager and ServiceManager applications software products.

Exar Corporation - Communications Semiconductors

Semiconductors and application software - circuit and packet services over PDH, SDH and OTN transport networks.

Exar Corporation

Exar Corporation based in Fremont, CA. designs, develops and markets high-performance, analog and mixed-signal silicon solutions for a variety of markets including networking, communications, and storage.

Twitter Interface - @exarcorp

Tahoe RF Semiconductor - Analog RFIC chips

Designs, Develops and supplies customer-specific Analog RFIC chips and subsystems on a single chip.

Tahoe RF Semiconductor - Analog RFIC chips

They specialize in Extremely low power designs techniques, High performance like 12 GHz, Radiation Hardened and full RTL digital design flow. These chips are used to design Products like GPS Receivers, Cellular and Wi-Fi Transceivers, Ultra-Low Power Transceivers and Satellite Communication ICs to name a few.

They also provide Silicon Proven IP Blocks for your custom design. Some of them are ..

  • Integer-N and Frac-N Frequency Synthesizers
  • Switch-cap filters, gm-C filters
  • Data converters A/D and D/A

Tahoe RF Semiconductor Inc - 12834 Earhart Avenue, Auburn, CA 95602-9027, United States.

Sunday, June 05, 2011

Products for portable ECG designs - Analog

"ADI microcontroller and integrated amplifier technologies support ultra low power, small size, and AAMI-EC13 performance level requirements for portable ECG designs."

AD8235: 40µA Micropower Instrumentation Amplifier in WLCSP Package

The AD8235 is the industry's smallest, lowest power instrumentation amplifier. It has rail to rail inputs and outputs and can operate on voltages as low as 1.8V.

AD8235: 40µA Micropower Instrumentation Amplifier in WLCSP Package

Another device of interest - 128 Channel, 24-bit Current-to-Digital ADC for High Slice Count CT Scanners. The ADAS1128 lowers CT system cost and enables enhanced imaging using the industry's highest level of channel integration and speed.

ADAS1000: Low Power, 5-Electrode ECG AFE

Some Features

  • Biopotential signals in; digitized signals out
  • 5 acquisition (ECG) channels + 1 driven lead
  • Parallel ICs for up to 10+ Electrode measurements
  • Internal Pace Detection Algorithm on 3 leads

From - Analog Devices Healthcare

Saturday, June 04, 2011

Equipment Design and Development Tools - LabSmith

Equipment Design and Development Tools - LabSmith

"LabSmith was founded in 1995 by Dr. Eric Cummings, whose work at Caltech and other institutions exposed the need for a new approach to research equipment design."

Microfluidics: CapTite Components and Kits

Equipment Design and Development Tools - LabSmith

"Breadboard-based connections and components for capillary and tubing-based microfluidic setups."

"From snap-together microfluidics to affordable, feature-laden microscopes, LabSmith has earned its reputation for innovative solutions to research problems."

Adress - LabSmith, 6111 Southfront Road, Suite E· Livermore, CA 94551

Wednesday, June 01, 2011

LM723 Power Electronics Workhorse

This is another versatile and flexible chip. I could design current sources, voltage to current transmitters, level translation and many more. You can think of applications beyond the Power Electronics Scope with this.

Programmable voltage regulator, DIP-14 and SO-14 packages.

LM723 Power Electronics Workhorse

"The circuit provides internal current limiting. When the output current exceeds 150mA an external NPN or PNP pass element may be used. Provisions are made for adjustable current limiting and remote shutdown."

Some Specs -

Input voltage up to 40V, Output voltage adjustable from 2 to 37V, Output current to 150mA without external pass transistor and Adjustable current limiting.

Also see at ST - LM723 High precision voltage regulator