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High-Precision Sensing Platform For Portable Apps

January 21, 2008

Semtech introduces the SX8723, a data acquisition IC with 2 differential inputs or 4 single-ended inputs and 2 digital I/O designed to interface directly with up to 4 sensors, enabling lower-cost portable sensing systems.


CAMARILLO, CA--(BUSINESS WIRE)-- Semtech Corp. (Nasdaq:SMTC), a leading supplier of analog and mixed-signal semiconductors, announced the SX8723, an ultra-small data acquisition device that uses the company's ZoomingADC signal amplification circuitry to lower the cost of implementing portable sensing systems by allowing manufacturers to use lower-cost sensors without sacrificing accuracy.

The SX8723 is a data acquisition device that converts analog sensor data into a digital signal for processing and is capable of direct connections with a wide array of pressure, chemical or magnetic sensors making it one of the most versatile data acquisition devices available on the market. The device is designed to operate off of a single Li-ion battery without loss of its 16-bit precision, even with a depleted battery.

The device features Semtech's ZoomingADC, a 10-bit preamplifier for the ADC that allows the device to "zoom in" (with a programmable gain from 0.1 to 1000) on a small portion of the analog signal and apply the full 16-bit ADC to only that part of the signal. The preamplifier delivers the highest gain on the market and has a unique offset control mechanism, giving designers the freedom to achieve a given level of sensitivity using lower cost sensors.

The SX8723 features two differential inputs or four single-ended inputs and two digital I/Os to interface directly with up to four sensors that can be a mix of pressure, magnetic and chemical, making the device truly a "sensing platform" that can be deployed across a manufacturer's complete range of sensors.

"With an ability to directly read most Wheatstone bridge sensors and with flexible signal input, the SX8723 is the industry's most versatile ADC," said Michel Chevroulet, Sensing Product Group Manager for Semtech's Wireless and Sensing Products Business Unit. "The focused amplification of our ZoomingADC technology and the flexibility of the two general purpose I/O lines allow customers to further drive down the cost of their systems through the use low-cost sensors."

The SX8723 joins the SX8724, which has three differential inputs and four parallel I/Os, as the smallest data acquisition devices in Semtech's sensing machines product platform, making it possible to embed it directly inside the sensor enclosure. It is available in a 4x4 mm MLPD12 leadless 12-pin package that can be soldered with regular SMD soldering process. The SX8723 is RoHS and WEEE compliant. The SX8724 is the winner of a 2007 Product of the Year Award for most innovative ADC given by EN-Genius.net, a leading technology news Website for electronic design engineers.

Key Features of the SX8723

  • ZoomingADC 16-bit ADC + 10-bits preamplifier with a programmable 0.1x to 1000x gain in 10% steps
  • Sensor offset compensation up to 15 times full scale of input signal
  • Two differential or four single-ended analog inputs
  • RC oscillator
  • Two general purpose digital input/output lines
  • Sleep and power saving modes
  • I2C serial connection for MCU
  • Interfaces directly with most Wheatstone bridge sensors

Pricing and Availability
The SX8723 (order code: SX8723E083TRT) is available immediately in production quantities and is priced at $1.98 each in 10,000 piece lots. Semtech offers comprehensive design assistance, including field- and factory-based support. Data sheets, volume pricing, and delivery quotes, as well as evaluation kits and samples, are available by contacting salesinfo@semtech.com.

About Semtech
Semtech Corp. is a leading supplier of high-quality analog and mixed-signal semiconductor products. The company is dedicated to providing customers with proprietary solutions and breakthrough technology in power management, protection, test & measurement, advanced communications and wireless connectivity products. Publicly traded since 1967, Semtech is listed on the NASDAQ National Market under the symbol SMTC. For more information, contact Semtech Corp. at 200 Flynn Road, Camarillo, CA 93012-8790; phone (805) 498-2111; email to info@semtech.com; or visit the Semtech Web site.

Semtech, the Semtech logo, and ZoomingADC are marks of Semtech Corp.


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