LTC2460/LTC2462

1

24602f

–50

–10

10

–30

50

70

30

90

TEMPERATURE (°C)

1.2520

1.2515

1.2510

1.2505

1.2500

24602 TA01b

1.2480

1.2485

1.2490

1.2495

TYPICAL APPLICATION

FEATURES

APPLICATIONS

DESCRIPTION

Ultra-Tiny, 16-Bit

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

through an SPI Interface. The LTC2460 is single-ended

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

formance and 0.1% initial accuracy. The converters are

available in a 12-pin DFN 3mm

× 3mm package or an

MSOP-12 package. They include an integrated oscillator

and perform conversions with no latency for multiplexed

applications. The LTC2460/LTC2462 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 LTC2460/LTC2462

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 LTC2460/LTC2462 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

× 3mm DFN and MSOP

Packages

L, LT, LTC and LTM 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

SCK

SPI

INTERFACE

SDO

CS

0.1μF

0.1μF

2.7V TO 5.5V

10μF

0.1μF

REFOUT

0.1μF

COMP

GND

0.1μF

LTC2462

24602 TA01a