Website: www.exar.com
Founded: 1971
Corp. Headquarters: Fremont, CA
America II is one of the world's largest distributors of semiconductors and electronic components. As a global franchised distributor of Exar we offer the most complete range of Exar products for virtually any application including: power management, sensing and signal conditioning, interface, display, LED lighting and video processing solutions.

Navigate through the Exar tabs below to view more information about the extensive line of products America II can provide to you. For more information on this or any other Exar products, please contact your America II sales representative.


Audio / Video

Computer / Networking

Embedded systems
Network Management Equipment
Wireless base-stations


Portable consumer apps
Smart phones




General Perpose Industry

Point of Sale

Power Management

Battery-Powered Equipment

Product Lines

Commodity Products
High Performance Analog Amplifiers, Comparators, Switches, Data Converter Products
Connectivity UARTs, Bridges, Serial Transceivers
Communications Timing Devices, SDH/SONET, PDH
Power Management Modules, Switching Regulators & Controllers, LDOs, Programmable Power, Voltage References, Supervisors, Power Switches, LED Drivers
Video/Display/Lighting Solutions Video Processors, Add-in Cards, Display products (for LCD TVs), Tables, Monitors, AC Step Driver (for LED lighting)

Featured Products

XR18910 8:1 Sensor Interface AFE


The XR18910 is a unique sensor interface integrated circuit with an on-board 8:1 multiplexer, offset correction DAC, instrumentation amplifier and voltage reference. The XR18910 is designed to integrate multiple bridge sensors with a Microcontroller (MCU) or Field Programmable Gate Array (FPGA). 

The integrated offset correction DAC provides digital calibration of the variable and in many cases substantial offset voltage generated by the bridge sensors. The DAC is controlled by an I2C compatible two-wire serial interface. The serial interface also provides the user with easy controls to the XR18910’s many functions such as input and gain selection. 

An integrated LDO provides a regulated voltage to power the input bridge sensors and is selectable, between 3V and 2.65V, via the serial interface for lower voltage compatibility. The LDO current can be sensed and a proportional voltage present at the output of the IC for monitoring the LDO current. 

The XR18910 offers eight fixed gain settings (from 2V/V to 760V/V), each with an error of only ±0.5%, that are selectable via the I2C interface. The XR18910 is designed to operate from 2.7V to 5V supplies and is specified over the industrial temperature range of -40°C to 85°C. It is offered in a space saving 3.5mm x 3.5mm QFN-24 package. It consumes less than 559μA maximum supply current and offers a sleep mode for added power savings.


  • Integrated features for interfacing multiple bridge sensors with an MCU or FPGA: 8:1 differential mux with I2C interface Instrumentation amplifier LDO Offset correction DAC with I2C interface (±560mV offset correction range - RTI) 
  • Eight selectable voltage gains from 2V/V to 760V/V with only ±0.5% gain error 
  • 3mV maximum input offset voltage 
  • 100pA maximum input bias current 559μA maximum supply current 
  • 2.7V to 5V analog supply voltage range 
  • 1.8V to 5V digital supply voltage range 
  • 40˚C to 85˚C temperature range 
  • 3.5 x 3.5mm QFN-24

About Exar

Exar Corporation designs, develops and markets high performance integrated circuits and system solutions for the industrial and embedded systems communications, high end consumer and infrastructure markets. Exar's broad product portfolio includes power management, sensing and signal conditioning, interface, display, LED lighting and video processing solutions. 

Exar's comprehensive knowledge of end-user markets along with our underlying analog, mixed signal and digital technology has enabled them to provide innovative solutions designed to meet the needs of the evolving connected world. Exar's products are deployed in a wide array of applications such as industrial, instrumentation and medical equipment, networking and telecommunication systems, servers, flat panel displays, LED lighting solutions, set top boxes and digital video recorders. 

Exar provides customers with a breadth of component products and sub-system solutions based on advanced silicon integration.