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

News Release ⎜ www.linear.com
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.
16-Bit I2C ADC Integrates 2ppm/°C Reference in
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3mm x 3mm Package
Ultra-Tiny ADC Family
Part Number
Input
Input Range
Output Rate
I/O
VREF
LTC2450
LTC2450-1
LTC2451
LTC2452
LTC2453
LTC2460
LTC2461
LTC2462
LTC2463
Single-Ended
Single-Ended
Single-Ended
Differential
Differential
Single-Ended
Single-Ended
Differential
Differential
0V to 5V
0V to 5V
0V to 5V
±5V
±5V
0V to 1.25V
0V to 1.25V
±1.25V
±1.25V
30Hz
60Hz
60Hz
60Hz
60Hz
60Hz
60Hz
60Hz
60Hz
SPI
SPI
I2C
SPI
I2C
SPI
I2C
SPI
I2C
VCC = VREF
VCC = VREF
External
External
External
Internal
Internal
Internal
Internal
Photo Caption: 16-Bit I2C ADC with 2ppm/°C Internal Reference
Summary of Features: LTC2461/LTC2463
•
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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
2-Wire I C Interface
Tiny 12-Lead 3mm × 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, 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
16-Bit I2C ADC Integrates 2ppm/°C Reference in
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3mm x 3mm Package
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
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
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