Monday, June 06, 2011

Exar Corporation - Specialized Semiconductors

Exar Corporation - Specialized Semiconductors

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.

Other Areas are
  • Power solutions, power and system architecture, LED-Lighting.
  • Networking, UART and serial protocol transceiver solutions, Storage. 

Exar - Communications Semiconductors

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

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.

PowerArchitect

PowerArchitect - Exar

Modify voltage, current and other parameters to create complex sequencing schemes monitor and configure supplies in real-time.

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.

TRFS-202 Receiver VCO
 
TRFS-202 WCDMA Rx VCO is a fully integrated voltage controlled oscillator operating at a frequency of 4.28GHz for WCDMA receiver applications. The differential architecture of the oscillator, along with local bias generation, improves the rejection of common mode interference and provides noise immunity.
TRFS-202 Receiver VCO2
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
TRFS70001 1.5MHz Buck Voltage Regulator Tahoe RF

Buck Voltage Regulator Tahoe RF

The TRFS70001 is a synchronous step down voltage regulator designed for applications where battery life time or lowest heat dissipation are essential. While this IP block can be used standalone, it has been developed such that it can be integrated with other circuitry in an RFIC.

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

"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."

Equipment Design and Development Tools - LabSmith 

"LabSmith has introduced entirely new classes of equipment, such as high voltage sequencers, real-time recording fluorescence microscopes, uProcess Aautomation products, including syringe pumps and valves, and breadboard-based microfluidics components."

Microfluidics with the LabSmith LabPackage-Making a Microfluidic Injection on a Chip

Microfluidics with the 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."

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