Linear Technology LTC2461: 16-bit I²C Single-Ended Delta Sigma ADC with 10ppm max Internal Reference, req DC590 DC1491A DC1491A Ficha De Dados

Códigos do produto

DC1491A

LTC2461/LTC2463

24613fa

–50

–10

–30

TEMPERATURE (°C)

REFERENCE OUTPUT VOL

TAGE (V)

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

Ultra-Tiny, 16-Bit I

ΔΣ

ADCs with 10ppm/°C Max

Precision Reference

The LTC

2461/LTC2463 are ultra tiny, 16-Bit analog-to-

digital converters with an integrated precision reference.

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

through an I

C Interface. The LTC2461 is single-ended

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.

REF

vs Temperature

16-Bit Resolution, No Missing Codes

Internal Reference, High Accuracy 10ppm/°C (Max)

Single-Ended (LTC2461) or Differential (LTC2463)

2LSB Offset Error (Typ)

0.01% Gain Error (Typ)

60 Conversions Per Second

Single Conversion Settling Time for Multiplexed

Applications

1.5mA Supply Current

200nA Sleep Current

Internal Oscillator—No External Components

Required

2-Wire I

C Interface with Two Addresses Plus One

Global Address for Synchronization

Ultra-Tiny, 12-Lead, 3mm

× 3mm DFN and MSOP

Packages

System Monitoring

Environmental Monitoring

Direct Temperature Measurements

Instrumentation

Data Acquisition

Embedded ADC Upgrades

, 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

SCL

INTERFACE

SDA

0.1µF

2.7V TO 5.5V

10µF

0.1µF

REFOUT

REF

–

0.1µF

COMP

GND

–

0.1µF

LTC2463

24613

TA01a