I2C-Enabled, 16-Bit ADC is capable of 60 conversions/sec.

Press Release Summary:




Integrating precision reference (2 ppm/°C typ, 10 ppm/°C max) in 3 x 3 mm DFN and 4 x 5 mm MSOP packages, LTC2463 delta sigma ADC allows precise measurements without external reference. It operates from 2.7-5.5 V supply and measures ±1.25 V differential input range at output rates to 60 Hz, facilitating measurement of low-frequency sensor signals. Characteristics include 16-bit DC performance of 1 LSB (typ) integral nonlinearity error and 0.01% gain error (typ).



Original Press Release:



16-Bit I2C ADC Integrates 2ppm/°C Reference in 3mm x 3mm Package



MILPITAS, CA - June 24, 2009 - Linear Technology Corporation introduces the LTC2463, a 16-bit delta sigma ADC that integrates a precision reference in tiny 12-lead 3mm x 3mm DFN and 4mm x 5mm MSOP packages. With the device's integrated reference (2ppm/°C typical, 10ppm/°C maximum), the LTC2463 allows precise measurements with no need for an external reference. The LTC2463 communicates via a 2-wire I2C interface and is a complete analog solution for portable sensors, compact systems or power supply monitoring.

Operating from a single 2.7V to 5.5V supply, the LTC2463 measures a ±1.25V differential input range at output rates up to 60Hz, making it easy to measure temperature, pressure, voltage or other low frequency sensor signals. The LTC2463 achieves 16-bit DC performance of 1LSB (typical) integral nonlinearity error, 2.2uVRMS transition noise and 0.01% gain error (typical). This ADC has an internal oscillator, another space-saving feature.

The LTC2463 draws 2.5mA (max) supply current at the 60Hz maximum sample rate with the internal reference active. After each conversion, the ADC enters nap mode, reducing supply current to less than 1.5mA. Supply current can be further reduced to less than 2uA (max) in sleep mode. The LTC2463 incorporates a proprietary input sampling network that reduces the dynamic input current to less than 50nA, enabling a wide range of external input protection and filter circuits.

The LTC2463 is offered alongside the LTC2461, a 16-bit I2C ADC that measures single-ended inputs between 0V and 1.25V. The LTC2463 and LTC2461 join the previously released LTC2453 (differential input, ±5V) and LTC2451 (single-ended input, 0V to 5V). Pricing for the LTC2461 and LTC2463 begins at $1.65, each in 1,000-piece quantities. For more information, visit www.linear.com.

Ultra-Tiny ADC Family

Summary of Features: LTC2461/LTC2463

16-Bit Resolution, No Missing Codes

Internal 1.25V Reference: (10ppm/°C max)

Single-Ended (LTC2461) or Differential (LTC2463) Input

2LSB Offset Error

0.01% Gain Error

60 Conversions Per Second

Single Conversion Settling Time for Multiplexed Applications

Single-Cycle Operation with Auto Shutdown:
o 1.5mA (typical) Supply Current
o 2uA (max) Sleep Current

Internal Oscillator-No External Components Required

2-Wire I2C Interface

Tiny 12-Lead 3mm x 3mm DFN & MSOP Packages

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, µModule® 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, µModule and are registered trademarks of Linear Technology Corp. All other trademarks are the property of their respective owners.

Contacts
North America and General Information
John Hamburger
Tel: (408) 432-1900 ext. 2419
jhamburger@linear.com

Doug Dickinson
Tel: (408) 432 1900 ext. 2233
ddickinson@linear.com

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