LTC2453

1

2453f

DIFFERENTIAL INPUT VOLTAGE (V)

–3

–0.5

0

0.5

0

2

2453 G02

–1.0

–1.5

–2.0

–2

–1

1

1.0

1.5

2.0

3

TYPICAL APPLICATION

FEATURES

DESCRIPTION

Easy-to-Use, Ultra-Tiny,

Differential, 16-Bit

ΔΣ ADC

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

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

× 2mm

DFN package. It includes an integrated oscillator that does

not require any external components. It uses a delta-sigma

modulator as a converter core and has no latency for

multiplexed applications. The LTC2453 includes a pro-

prietary 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

algorithms which are transparent to the user, ensuring

accuracy over time and over the operating temperature

and the differential input voltage range can extend up to

Following a single conversion, the LTC2453 can auto-

matically enter a sleep mode and reduce its power to less

than 0.2μA. If the user reads the ADC once a second, the

LTC2453 consumes an average of less than 50μW from

a 2.7V supply.

Codes

Applications

Required

× 2mm DFN Package

APPLICATIONS

10k

10k

10k

R

SCL

INTERFACE

SDA

0.1

μF

0.1

μF10μF

2.7V TO 5.5V

0.1

μF

GND

LTC2453

2453 TA01

, 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.