LTC2461/LTC2463

1

24613f

–50

–10

10

–30

50

70

30

90

TEMPERATURE (°C)

1.2520

1.2515

1.2510

1.2505

1.2500

24613 TA01b

1.2480

1.2485

1.2490

1.2495

TYPICAL APPLICATION

FEATURES

APPLICATIONS

DESCRIPTION

ΔΣ

ADCs with 10ppm/°C Max

Precision Reference

digital converters with an integrated precision reference.

They use a single 2.7V to 5.5V supply and communicate

with a 0V to 1.25V input range and the LTC2463 is dif-

ferential with a 1.25V input range. Both ADCs include a

1.25V integrated reference with 2ppm/°C drift perfor-

mance and 0.1% initial accuracy. The converters are

available in a 12-pin 3mm

× 3mm DFN package or an

MSOP-12 package. They include an integrated oscillator

and perform conversions with no latency for multiplexed

applications. The LTC2461/LTC2463 include a proprietary

input sampling scheme that reduces the average input

current several orders of magnitude when compared to

conventional delta sigma converters.

Following a single conversion, the LTC2461/LTC2463

automatically power down the converter and can also be

configured to power down the reference. When both the

ADC and reference are powered down, the supply current

is reduced to 200nA.

The LTC2461/LTC2463 can sample at 60 conversions per

second and, due to the very large oversampling ratio,

have extremely relaxed antialiasing requirements. Both

include continuous internal offset and fullscale calibration

algorithms which are transparent to the user, ensuring ac-

curacy over time and the operating temperature range.

Applications

Required

Global Address for Synchronization

× 3mm DFN and MSOP

Packages

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

Protected by U.S. Patents, including 6208279, 6411242, 7088280, 7164378.

10k

10k

10k

R

SCL

INTERFACE

SDA

0.1μF

0.1μF

2.7V TO 5.5V

10μF

0.1μF

REFOUT

0.1μF

COMP

GND

A0

0.1μF

LTC2463

24613 TA01a