LTC2484CDD datasheet, PDF - EEWORLD Datasheet

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LTC2484CDD: Description24-Bit ツヒ ADC with Easy Drive Input Current Cancellation; CategoryAnalog mixed-signal IC converter; File Size727KB，40 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html

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LTC2484CDD Overview

24-Bit ツヒ ADC with Easy Drive Input Current Cancellation

LTC2484CDD Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	incompatible
Parts packaging code	DFN
package instruction	HVSON, SOLCC10,.12,20
Contacts	10
Manufacturer packaging code	DD
Reach Compliance Code	_compli
ECCN code	EAR99
Maximum analog input voltage	5.5 V
Minimum analog input voltage
Maximum conversion time	163500 µs
Converter type	ADC, DELTA-SIGMA
JESD-30 code	S-PDSO-N10
JESD-609 code	e0
length	3 mm
Maximum linear error (EL)	0.001%
Humidity sensitivity level	1
Number of analog input channels	1
Number of digits	24
Number of functions	1
Number of terminals	10
Maximum operating temperature	70 °C
Minimum operating temperature
Output bit code	BINARY
Output format	SERIAL
Package body material	PLASTIC/EPOXY
encapsulated code	HVSON
Encapsulate equivalent code	SOLCC10,.12,20
Package shape	SQUARE
Package form	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)	235
power supply	3/5 V
Certification status	Not Qualified
Maximum seat height	0.8 mm
Nominal supply voltage	5 V
surface mount	YES
technology	CMOS
Temperature level	COMMERCIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	NO LEAD
Terminal pitch	0.5 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	20
width	3 mm
Base Number Matches	1

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LTC2484

24-Bit

∆Σ

ADC with

Easy Drive Input Current Cancellation

FEATURES

■

DESCRIPTIO

Easy Drive Technology Enables Rail-to-Rail Inputs

with Zero Differential Input Current

Directly Digitizes High Impedance Sensors with

Full Accuracy

600nV RMS Noise

Integrated Temperature Sensor

GND to V

Input/Reference Common Mode Range

Programmable 50Hz, 60Hz or Simultaneous

50Hz/60Hz Rejection Mode

2ppm INL, No Missing Codes

1ppm Offset and 15ppm Total Unadjusted Error

Selectable 2x Speed Mode (15Hz Using Internal

Oscillator)

No Latency: Digital Filter Settles in a Single Cycle

Single Supply 2.7V to 5.5V Operation

Internal Oscillator

Available in a Tiny (3mm

3mm) 10-Lead

DFN Package

The LTC

2484 combines a 24-bit No Latency

∆Σ™

analog-

to-digital converter with patented Easy Drive™ technol-

ogy. The patented sampling scheme eliminates dynamic

input current errors and the shortcomings of on-chip

buffering through automatic cancellation of differential

input current. This allows large external source

impedances and input signals with rail-to-rail input range

to be directly digitized while maintaining exceptional

DC accuracy.

The LTC2484 includes an on-chip temperature sensor and

oscillator. The LTC2484 can be configured to measure an

external signal or internal temperature sensor and reject

line frequencies. 50Hz, 60Hz or simultaneous 50Hz/60Hz

line frequency rejection can be selected as well as a 2x

speed-up mode.

The LTC2484 allows a wide common mode input range

(0V to V

) independent of the reference voltage. The

reference can be as low as 100mV or can be tied directly

to V

. The LTC2484 includes an on-chip trimmed oscil-

lator, eliminating the need for external crystals or oscilla-

tors. Absolute accuracy and low drift are automatically

maintained through continuous, transparent, offset and

full-scale calibration.

, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

No Latency

∆Σ

and Easy Drive are trademarks of Linear Technology Corporation. All other

trademarks are the property of their respective owners. Patent pending.

APPLICATIO S

■

Direct Sensor Digitizer

Weight Scales

Direct Temperature Measurement

Strain Gauge Transducers

Instrumentation

Industrial Process Control

DVMs and Meters

TYPICAL APPLICATIO

+FS Error vs R

SOURCE

at IN

and IN

–

= 5V

60 V

REF

= 5V

IN+

= 3.75V

–

= 1.25V

40 V

= GND

20 T

= 25°C

= 1µF

–20

–40

–60

–80

SOURCE

(Ω)

100

10k

100k

2484 TA02

10k

SENSE

10k

DIFF

= 0

1µF

IN+

REF

LTC2484

SDI

SDO

SCK

4-WIRE

SPI INTERFACE

IN–

GND

2484 TA01

+FS ERROR (ppm)

1µF

2484fa

LTC2484CDD Related Products

	LTC2484CDD	LTC2484
Description	24-Bit ツヒ ADC with Easy Drive Input Current Cancellation	24-Bit ツヒ ADC with Easy Drive Input Current Cancellation

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