LTC2453

1

2453fb

DIFFERENTIAL INPUT VOLTAGE (V)

–3

–0.5

0

0.5

0

2

2453 TA01b

–1.0

–1.5

–2.0

–2

–1

1

1.0

1.5

2.0

3

TYPICAL APPLICATION

FEATURES

DESCRIPTION

Ultra-Tiny, Differential,

16-Bit

ΔΣ ADC With

analog-to-digital converter. The LTC2453 uses a single

interface. The ADC is available in an 8-pin, 3mm

×2mmDFN

package or 8-pin, 3mm

× 3mm TSOT package. It includes

an integrated oscillator that does not require any external

components.Itusesadelta-sigmamodulatorasaconverter

core and has no latency for multiplexed applications. The

LTC2453 includes a proprietary input sampling scheme

that reduces the average input sampling current several

orders of magnitude lower than conventional delta-sigma

converters. Additionally, due to its architecture, there is

negligible current leakage between the input pins.

The LTC2453 can sample at 60 conversions per second,

and due to the very large oversampling ratio, has ex-tremely

relaxed antialiasing requirements. The LTC2453 includes

continuous internal offset and full-scale calibration algo-

rithms which are transparent to the user, ensuring accuracy

over time and over the operating temperature range. The

Followingasingleconversion,theLTC2453canauto-matically

enter a sleep mode and reduce its power to less than 0.2μA. If

theuserreadstheADConceasecond,theLTC2453consumes

an average of less than 50μW from a 2.7V supply.

■

■

16-Bit Resolution (Including Sign), No Missing Codes

■

2LSB Offset Error

■

4LSB Full-Scale Error

■

60 Conversions Per Second

■

Single Conversion Settling Time for Multiplexed

Applications

■

Single-Cycle Operation with Auto Shutdown

■

800μA Supply Current

■

0.2μA Sleep Current

■

Internal Oscillator—No External Components Required

■

■

Ultra-Tiny 8-Pin 3mm

× 2mm DFN

and TSOT23 Packages

APPLICATIONS

■

System Monitoring

■

Environmental Monitoring

■

Direct Temperature Measurements

■

Instrumentation

■

Industrial Process Control

■

Data Acquisition

■

Embedded ADC Upgrades

10k

10k

10k

R

SCL

INTERFACE

SDA

0.1μF

0.1μF

10μF

2.7V TO 5.5V

0.1μF

GND

LTC2453

2453 TA01

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

Technology Corporation. No Latency

ΔΣ is a trademark of Linear Technology Corporation.

All other trademarks are the property of their respective owners. Protected by U.S. Patents

including 6208279, 6411242, 7088280, 7164378.