LTC2983CLX#PBF datasheet, PDF - EEWORLD Datasheet

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LTC2983CLX#PBF: DescriptionTemp Sensor Digital Serial (2-Wire, 3-Wire, 4-Wire, SPI) Automotive 48-Pin LQFP Tray; File Size725KB，72 Pages; ManufacturerADI; Websitehttps://www.analog.com

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LTC2983CLX#PBF Overview

Temp Sensor Digital Serial (2-Wire, 3-Wire, 4-Wire, SPI) Automotive 48-Pin LQFP Tray

LTC2983CLX#PBF Parametric

Parameter Name	Attribute value
EU restricts the use of certain hazardous substances	Compliant
ECCN (US)	EAR99
Part Status	Active
HTS	8542.39.00.01
Module/IC Classification	IC
Resolution (bit)	24(Min)
Accuracy	0.1°C
Interface Type	Serial (2-Wire, 3-Wire, 4-Wire, SPI)
Output Type	Digital
Minimum Operating Supply Voltage (V)	2.85
Typical Operating Supply Voltage (V)	5\|3.3
Maximum Operating Supply Voltage (V)	5.25
Maximum Supply Current (uA)	20000
Minimum Operating Temperature (°C)	0
Maximum Operating Temperature (°C)	70
Packaging	Tray
Pin Count	48
Standard Package Name	QFP
Supplier Package	LQFP
Mounting	Surface Mount
Package Height	1.45(Max)
Package Length	7
Package Width	7
PCB changed	48
Lead Shape	Gull-wing

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FEATURES

LTC2983

Multi-Sensor High Accuracy

Digital Temperature

Measurement System

DESCRIPTION

The

LTC

2983

measures a wide variety of temperature

sensors and digitally outputs the result, in °C or °F with

0.1°C accuracy and 0.001°C resolution. The LTC2983 can

measure the temperature of virtually all standard (type B,

E, J, K, N, S, R, T) or custom thermocouples, automatically

compensate for cold junction temperatures and linearize

the results. The device can also measure temperature with

standard 2-, 3- or 4-wire RTDs, thermistors and diodes. It

has 20 reconfigurable analog inputs enabling many sen-

sor connections and configuration options. The LTC2983

includes excitation current sources and fault detection

circuitry appropriate for each type of temperature sensor.

The LTC2983 allows direct interfacing to ground referenced

sensors without the need for level shifters, negative supply

voltages, or external amplifiers. All signals are buffered and

simultaneously digitized with three high accuracy, 24-bit ∆∑

ADCs, driven by an internal 15ppm/°C (maximum) reference.

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.

Patents Pending

Directly Digitize RTDs, Thermocouples, Thermistors

and Diodes

Single 2.85V to 5.25V Supply

Results Reported in °C or °F

20 Flexible Inputs Allow Interchanging Sensors

Automatic Thermocouple Cold Junction Compensation

Built-In Standard and User-Programmable Coefficients

for Thermocouples, RTDs and Thermistors

Configurable 2-, 3- or 4-Wire RTD Configurations

Measures Negative Thermocouple Voltages

Automatic Burn Out, Short-Circuit and Fault Detection

Buffered Inputs Allow External Protection

Simultaneous 50Hz/60Hz Rejection

Includes 15ppm/°C (Max) Reference (I-Grade)

Direct Thermocouple Measurements

Direct RTD Measurements

Direct Thermistor Measurements

Custom Sensor Applications

APPLICATIONS

TYPICAL APPLICATION

Thermocouple Measurement with Automatic Cold Junction Compensation

2.85V TO 5.25V

0.1µF

24-BIT

∆∑ ADC

LTC2983

Typical Temperature Error Contribution

0.5

0.4

0.3

0.2

ERROR (°C)

0.1

–0.1

–0.2

°C/°F

THERMISTOR

THERMOCOUPLE

SENSE

LINEARIZATION/

FAULT DETECTION

24-BIT

∆∑ ADC

SPI

INTERFACE

3904 DIODE

–0.3

–0.4

–0.5

–200 0

RTD

4 3

PT-100

RTD

24-BIT

∆∑ ADC

REF

(10ppm/°C)

2983 TA01a

200 400 600 800 1000 1200 1400

TEMPERATURE (°C)

2983 TA01b

2983fc

For more information

www.linear.com/LTC2983

LTC2983

TABLE OF CONTENTS

Features ............................................................................................................................ 1

Applications ....................................................................................................................... 1

Typical Application ............................................................................................................... 1

Description......................................................................................................................... 1

Absolute Maximum Ratings ..................................................................................................... 3

Order Information ................................................................................................................. 3

Complete System Electrical Characteristics .................................................................................. 3

Pin Configuration ................................................................................................................. 3

ADC Electrical Characteristics .................................................................................................. 4

Reference Electrical Characteristics ........................................................................................... 4

Digital Inputs and Digital Outputs .............................................................................................. 5

Typical Performance Characteristics .......................................................................................... 6

Pin Functions ...................................................................................................................... 9

Block Diagram....................................................................................................................10

Test Circuits ......................................................................................................................11

Timing Diagram ..................................................................................................................11

Overview ..........................................................................................................................12

Applications Information .......................................................................................................16

Thermocouple Measurements .............................................................................................................................. 21

Diode Measurements ............................................................................................................................................ 24

RTD Measurements .............................................................................................................................................. 28

Thermistor Measurements .................................................................................................................................... 43

Direct ADC Measurements .................................................................................................................................... 55

Supplemental Information......................................................................................................55

Fault Protection and Anti-Aliasing ......................................................................................................................... 57

2- and 3-Cycle Conversion Modes ........................................................................................................................ 57

Running Conversions Consecutively on Multiple Channels................................................................................... 58

MUX Configuration Delay...................................................................................................................................... 58

Global Configuration Register ............................................................................................................................... 59

Custom Thermocouples .........................................................................................................59

Custom RTDs .....................................................................................................................62

Custom Thermistors .............................................................................................................65

Package Description ............................................................................................................70

Revision History .................................................................................................................71

Typical Application ..............................................................................................................72

Related Parts .....................................................................................................................72

2983fc

For more information

www.linear.com/LTC2983

LTC2983CLX#PBF Related Products

	LTC2983CLX#PBF	LTC2983ILX#PBF	LTC2983HLX#PBF
Description	Temp Sensor Digital Serial (2-Wire, 3-Wire, 4-Wire, SPI) Automotive 48-Pin LQFP Tray	Temp Sensor Digital Serial (2-Wire, 3-Wire, 4-Wire, SPI) Automotive 48-Pin LQFP Tray	Temp Sensor Digital Serial (2-Wire, 3-Wire, 4-Wire, SPI) Automotive 48-Pin LQFP Tray
EU restricts the use of certain hazardous substances	Compliant	Compliant	Compliant
ECCN (US)	EAR99	EAR99	EAR99
Part Status	Active	Active	Active
HTS	8542.39.00.01	8542.39.00.01	8542.39.00.01
Module/IC Classification	IC	IC	IC
Resolution (bit)	24(Min)	24(Min)	24(Min)
Accuracy	0.1°C	0.1°C	0.1°C
Interface Type	Serial (2-Wire, 3-Wire, 4-Wire, SPI)	Serial (2-Wire, 3-Wire, 4-Wire, SPI)	Serial (2-Wire, 3-Wire, 4-Wire, SPI)
Output Type	Digital	Digital	Digital
Minimum Operating Supply Voltage (V)	2.85	2.85	2.85
Typical Operating Supply Voltage (V)	5\|3.3	3.3\|5	3.3\|5
Maximum Operating Supply Voltage (V)	5.25	5.25	5.25
Maximum Supply Current (uA)	20000	20000	20000
Minimum Operating Temperature (°C)	-	-40	-40
Maximum Operating Temperature (°C)	70	85	125
Packaging	Tray	Tray	Tray
Pin Count	48	48	48
Standard Package Name	QFP	QFP	QFP
Supplier Package	LQFP	LQFP	LQFP
Mounting	Surface Mount	Surface Mount	Surface Mount
Package Height	1.45(Max)	1.45(Max)	1.45(Max)
Package Length	7	7	7
Package Width	7	7	7
PCB changed	48	48	48
Lead Shape	Gull-wing	Gull-wing	Gull-wing

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