News Release ⎜ www.linear.com Selectable 250sps/1ksps 16-Bit ADC Integrates 10ppm/°C Max Precision Reference MILPITAS, CA – December 7, 2009 – Linear Technology Corporation introduces the LTC2470 and LTC2472, a pair of 16-bit delta sigma ADCs that integrate a high accuracy reference in tiny 3mm x 3mm DFN and 12-lead MSOP packages. The device’s integrated 1.25V reference offers 2ppm/°C drift performance and 0.1% initial accuracy for precise measurements in spaceconstrained applications. Both ADCs provide guaranteed 16-bit no missing code resolution and selectable 250sps or 1ksps output rate. The LTC2470 and LTC2472 are ideal for system and environmental monitoring and data acquisition systems requiring fast output rates. Operating from a single 2.7V to 5.5V supply, these ADCs are designed to measure single-ended (LTC2470) or differential (LTC2472) sensors via an SPI serial interface. With its internal 1.25V reference, the LTC2470 can measure a single-ended input between 0V and 1.25V, while the LTC2472 is capable of measuring a differential input up to ±1.25V. The versatile LTC2470/LTC2472 achieve excellent 16-bit DC performance of 2LSB (typ) integral nonlinearity error at 250sps, 3uVRMS transition noise and 0.25% gain error (max). An internal oscillator eliminates the need for external components to perform conversions. The LTC2470/LTC2472 draw 3.5mA supply current during a conversion. After each conversion, the ADC enters a nap mode, reducing supply current to less than 1.5mA (max). Supply current can be further reduced by placing the converter in sleep mode to achieve less than 2uA(max). The LTC2470/LTC2472 also incorporate a proprietary input sampling network that reduces the dynamic input current to less than 50nA, making a wide range of external input protection and filter circuits possible. The LTC2470 and LTC2472 are each offered in small 12-pin 3mm x 3mm DFN and MSOP packages. They are available today in both commercial and industrial temperature grade versions. Pricing for the LTC2470 & LTC2472 begin at $1.70 each in 1,000-piece quantities. For more information, visit www.linear.com. Selectable 250sps/1ksps 16-Bit ADC Integrates 10ppm/°C Max Precision Reference page 2 Ultra-Tiny ADC Family Part Number LTC2450 LTC2450-1 LTC2451 LTC2452 LTC2453 LTC2460 LTC2461 LTC2462 LTC2463 LTC2470 LTC2472 Input Single-Ended Single-Ended Single-Ended Differential Differential Single-Ended Single-Ended Differential Differential Single-Ended Differential Input Range 0V to VCC 0V to VCC 0V to VREF ±VREF ±VREF 0V to VREF 0V to VREF ±VREF ±VREF 0V to VREF ±VREF Output Rate 30Hz 60Hz 60Hz 60Hz 60Hz 60Hz 60Hz 60Hz 60Hz 250/1000Hz 250/1000Hz I/O SPI SPI I2C SPI I2C SPI I2C SPI I2C SPI SPI VREF VCC = VREF VCC = VREF External External External Internal Internal Internal Internal Internal Internal Photo Caption: 16-Bit ADC with Selectable 250sps/1ksps output rate & 10ppm/°C Max Internal Reference Summary of Features: LTC2470/LTC2472 • • • • • • • • • • • 16-Bit Resolution, No Missing Codes Internal Reference, (10ppm/°C max) Single-Ended (LTC2470) or Differential (LTC2472) Selectable 250sps/1ksps Output Rate 1mV Offset Error 0.01% Gain Error Single Conversion Settling Time for Multiplexed Applications Single-Cycle Operation with Auto Shutdown: o 3.5mA (typ) Supply Current o 2uA (max) Sleep Current Internal Oscillator—No External Components Required SPI Interface Small 12-Lead 3mm × 3mm DFN & MSOP Packages Selectable 250sps/1ksps 16-Bit ADC Integrates 10ppm/°C Max Precision Reference page 3 About Linear Technology Linear Technology Corporation, a manufacturer of high performance linear integrated circuits, was founded in 1981, became a public company in 1986 and joined the S&P 500 index of major public companies in 2000. Linear Technology products include high performance amplifiers, comparators, voltage references, monolithic filters, linear regulators, DC-DC converters, battery chargers, data converters, communications interface circuits, RF signal conditioning circuits, uModule® products, and many other analog functions. Applications for Linear Technology’s high performance circuits include telecommunications, cellular telephones, networking products such as optical switches, notebook and desktop computers, computer peripherals, video/multimedia, industrial instrumentation, security monitoring devices, high-end consumer products such as digital cameras and MP3 players, complex medical devices, automotive electronics, factory automation, process control, and military and space systems. LT, LTC, LTM, uModule and are registered trademarks of Linear Technology Corp. All other trademarks are the property of their respective owners. Press Contacts: North America / Worldwide UK & Nordic John Hamburger, Director Marketing Communications [email protected] Tel 408-432-1900 ext 2419 Alan Timmins [email protected] Tel: +44-1-252-629937 Doug Dickinson, Media Relations Manager [email protected] 408-432-1900 ext 2233