xmedia - 12-Bit, I2C SAR ADC Measures Eight Inputs & Dissipates Only 1.5mW

12-Bit, I2C, 8-Channel SAR ADCStore this angel in big sizeMILPITAS, CA – February 21, 2008 – Linear Technology Corporation introduces the LTC2309, a 12-bit analog-to-digital advocate (ADC) that communicates via an I2C-compatible 2-wire interface with 14ksps throughput rate. This adjustable ADC appearance an 8-channel chip multiplexer to admeasurement eight single-ended ascribe channels, four cogwheel channels, or combinations of both. The ascribe channels are software selectable for unipolar or bipolar ranges. Operating from a individual 5V supply, the LTC2309 draws just 1.5mW at a 1ksps throughput amount and alone 35uW in abeyance mode. Packaged in a tiny 4mm x 4mm QFN-24 with centralized reference, the LTC2309 is a abundant fit for carriageable chart and space-constrained designs application I2C. The LTC2309 achieves accomplished DC blueprint if barometer unipolar or bipolar ascribe signals, including ±1LSB INL and DNL, ±6LSB (max) zero-scale absurdity and ±6LSB (max) all-encompassing error. The LTC2309 aswell excels if digitizing AC ascribe signals, barometer 73dB SINAD and -88dB THD at 1kHz. The LTC2309 allows I2C abstracts transfers up to 100kHz in accepted approach and 400kHz in fast mode. The ADC includes two abode baddest pins that may be angry low, top or larboard floating, appropriately accouterment nine different I2C addresses. This is ideal for applications that crave abstracts of added than eight ascribe channels, as designers can calmly acquaint with assorted LTC2309 devices. The LTC2309 is accessible today in both bartering and automated temperature grades. Pricing begins at $2.95 for 1,000-piece quantities.

Summary of Features: LTC2309

•12-Bit Resolution
•I2C-Compatible, 2-Wire Interface
•Fast 1.3us Conversion Time
•14ksps Throughput Rate
•Low Power Dissipation:
o1.5mW at 1ksps
o35uW Sleep Mode
•8-Channel Multiplexer (8 Single-Ended Channels, 4 Differential Channels)
•5V Single Supply Operation
•Tiny QFN-24 (4mm x 4mm) Package
•Internal Reference, Internal Conversion Clock
•73dB SINAD at 1kHz
•Unipolar or Bipolar Input Ranges
•Two 3-State Address Select Pins Allow Nine Unique Addresses

John Hamburger, Director Marketing Communications
jhamburger@linear.com
Tel: 408-432-1900 ext 2419

Doug Dickinson, Media Relations Manager
ddickinson@linear.com
Tel: 408-432-1900 ext 2233

About Linear Technology
Linear Technology Corporation, a architect of top achievement beeline chip circuits, was founded in 1981, became a accessible aggregation in 1986 and abutting the S&P 500 basis of above accessible companies in 2000. Linear Technology articles cover top achievement amplifiers, comparators, voltage references, caked filters, beeline regulators, DC-DC converters, array chargers, abstracts converters, communications interface circuits, RF arresting conditioning circuits, uModule™ products, and abounding added analog functions. Applications for Linear Technology’s top achievement circuits cover telecommunications, cellular telephones, networking articles such as optical switches, anthology and desktop computers, computer peripherals, video/multimedia, automated instrumentation, aegis ecology devices, high-end chump articles such as agenda cameras and MP3 players, circuitous medical devices, automotive electronics, branch automation, action control, and aggressive and amplitude systems. For added information, appointment www.linear.com.

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