LTC2431CMS#TRPBF datasheet, PDF

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LTC2431CMS#TRPBF: DescriptionIC ADC 20BIT DIFFINPUT/REF10MSOP; CategoryAnalog mixed-signal IC converter; File Size448KB，40 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

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LTC2431CMS#TRPBF Overview

IC ADC 20BIT DIFFINPUT/REF10MSOP

LTC2431CMS#TRPBF Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	conform to
Maker	Linear ( ADI )
Parts packaging code	MSOP
package instruction	TSSOP,
Contacts	10
Manufacturer packaging code	MS
Reach Compliance Code	compliant
ECCN code	EAR99
Maximum analog input voltage	5.8 V
Minimum analog input voltage	2.4 V
Maximum conversion time	163440 µs
Converter type	ADC, DELTA-SIGMA
JESD-30 code	S-PDSO-G10
JESD-609 code	e3
length	3 mm
Maximum linear error (EL)	0.002%
Humidity sensitivity level	1
Number of analog input channels	1
Number of digits	20
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	TSSOP
Package shape	SQUARE
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	260
Certification status	Not Qualified
Maximum seat height	1.1 mm
surface mount	YES
Temperature level	COMMERCIAL
Terminal surface	Matte Tin (Sn)
Terminal form	GULL WING
Terminal pitch	0.5 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	30
width	3 mm

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LTC2430/LTC2431

20-Bit No Latency

∆Σ

ADCs

with Differential Input and

Differential Reference

FEATURES

DESCRIPTIO

Low Supply Current (200µA in Conversion Mode

and 4µA in Autosleep Mode)

Differential Input and Differential Reference

with GND to V

Common Mode Range

3ppm INL, No Missing Codes

10ppm Full-Scale Error and 1ppm Offset

0.56ppm Noise, 20.8 ENOBs

No Latency: Digital Filter Settles in a Single Cycle.

Each Conversion Is Accurate, Even After an

Input Step

Single Supply 2.7V to 5.5V Operation

Internal Oscillator—No External Components

Required

110dB Min, 50Hz/60Hz Notch Filter

Pin Compatible with 24-Bit LTC2410/LTC2411

The LTC

2430/LTC2431 are 2.7V to 5.5V micropower

20-bit differential

∆Σ

analog-to-digital converters with an

integrated oscillator, 3ppm INL and 0.56ppm RMS noise.

They use delta-sigma technology and provide single cycle

settling time for multiplexed applications. Through a

single pin, the LTC2430/LTC2431 can be configured for

better than 110dB differential mode rejection at 50Hz or

60Hz

±2%,

or they can be driven by an external oscillator

for a user-defined rejection frequency. The internal oscil-

lator requires no external frequency setting components.

The converters accept any external differential reference

voltage from 0.1V to V

for flexible ratiometric and

remote sensing measurement configurations. The full-

scale differential input range is from – 0.5V

REF

to 0.5V

REF

The reference common mode voltage, V

REFCM

, and the

input common mode voltage, V

INCM

, may be indepen-

dently set anywhere within GND to V

. The DC common

mode input rejection is better than 120dB.

The LTC2430/LTC2431 communicate through a flexible

3-wire digital interface that is compatible with SPI and

MICROWIRE

protocols.

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

No Latency

∆Σ

is a trademark of Linear Technology Corporation.

MICROWIRE is a trademark of National Semiconductor Corporation.

APPLICATIO S

Direct Sensor Digitizer

Weight Scales

Direct Temperature Measurement

Gas Analyzers

Strain Gauge Transducers

Instrumentation

Data Acquisition

Industrial Process Control

DVMs and Meters

TYPICAL APPLICATIO S

OUT

+ 0.25V) TO 20V

OUT

3V TO 5V

4.7µF

LT1790

0.1µF

TUE (ppm OF V

REF

)

0.1µF

LTC2431

REF

SCK

REF

–

= INTERNAL OSC/50Hz REJECTION

= EXTERNAL CLOCK SOURCE

= INTERNAL OSC/60Hz REJECTION

ANALOG INPUT RANGE

–0.5V

REF

TO 0.5V

REF

–

GND

SDO

24301 TA01

3-WIRE

SPI INTERFACE

Total Unadjusted Error

= 5V, V

REF

= 5V)

= 5V

4 V

REF

= 5V

INCM

= V

INCM

= 2.5V

3 F = GND

–1

–2

–3

–4

–5

–2.5 –2 –1.5 –1 – 0.5 0 0.5 1 1.5

INPUT VOLTAGE (V)

2.5

–45°C

25°C

85°C

24301 G01

24301f

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