LTC2420CS8 datasheet, PDF - EEWORLD Datasheet

LTC2420CS8: Description1-Channel Single ADC Delta-Sigma 7.5sps 20-bit Serial 8-Pin SOIC N; File Size388KB，36 Pages; ManufacturerADI; Websitehttps://www.analog.com

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LTC2420CS8 Overview

1-Channel Single ADC Delta-Sigma 7.5sps 20-bit Serial 8-Pin SOIC N

LTC2420CS8 Parametric

Parameter Name	Attribute value
EU restricts the use of certain hazardous substances	Not Compliant
ECCN (US)	EAR99
Part Status	Unconfirmed
SVHC	Yes
SVHC Exceeds Threshold	Yes
Converter Type	Temperature Measurement
Architecture	Delta-Sigma
Resolution	20bit
Number of ADCs	1
Number of Input Channels	1
Sampling Rate	7.5sps
Digital Interface Type	Serial (3-Wire, SPI, Microwire)
Input Type	Voltage
Input Signal Type	Single-Ended
Voltage Reference	External
Polarity of Input Voltage	Unipolar
Voltage Supply Source	Single
Input Voltage	6.188V
Minimum Single Supply Voltage (V)	2.7
Typical Single Supply Voltage (V)	3.3\|5
Maximum Single Supply Voltage (V)	5.5
Integral Nonlinearity Error	20ppm of Vref
Full Scale Error	10ppm of Vref
No Missing Codes (bit)	20
Sample and Hold	No
Single-Ended Input	Yes
Digital Supply Support	No
Minimum Operating Temperature (°C)	0
Maximum Operating Temperature (°C)	70
Supplier Temperature Grade	Commercial
Pin Count	8
Standard Package Name	SOP
Supplier Package	SOIC N
Mounting	Surface Mount
Package Height	1.5(Max)
Package Length	5(Max)
Package Width	3.99(Max)
PCB changed	8
Lead Shape	Gull-wing

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LTC2420

20-Bit

µPower

No Latency

∆Σ

ADC in SO-8

FEATURES

DESCRIPTIO

20-Bit ADC in SO-8 Package

8ppm INL, No Missing Codes at 20 Bits

4ppm Full-Scale Error

0.5ppm Offset

1.2ppm Noise

Digital Filter Settles in a Single Cycle. Each

Conversion Is Accurate, Even After an Input Step

Fast Mode: 16-Bit Noise, 12 Bits TUE at 100sps

Internal Oscillator—No External Components

Required

110dB Min, 50Hz/60Hz Notch Filter

Reference Input Voltage: 0.1V to V

Live Zero—Extended Input Range Accommodates

12.5% Overrange and Underrange

Single Supply 2.7V to 5.5V Operation

Low Supply Current (200µA) and Auto Shutdown

Pin Compatible with 24-Bit LTC2400

The LTC

2420 is a micropower 20-bit A/D converter with

an integrated oscillator, 8ppm INL and 1.2ppm RMS

noise that operates from 2.7V to 5.5V. It uses delta-sigma

technology and provides a digital filter that settles in a

single cycle for multiplexed applications. Through a single

pin, the LTC2420 can be configured for better than 110dB

rejection at 50Hz or 60Hz

±2%,

or it can be driven by an

external oscillator for a user-defined rejection frequency

in the range 1Hz to 800Hz. The internal oscillator requires

no external frequency setting components.

The converter accepts any external reference voltage from

0.1V to V

. With its extended input conversion range of

–12.5% V

REF

to 112.5% V

REF

, the LTC2420 smoothly

resolves the offset and overrange problems of preceding

sensors or signal conditioning circuits.

The LTC2420 communicates through a flexible 3-wire

digital interface which 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

Weight Scales

Direct Temperature Measurement

Gas Analyzers

Strain Gauge Transducers

Instrumentation

Data Acquisition

Industrial Process Control

4-Digit DVMs

TYPICAL APPLICATIO

2.7V TO 5.5V

1µF

LTC2420

REFERENCE

VOLTAGE

0.1V TO V

ANALOG

INPUT RANGE

–0.12V

REF

TO 1.12V

REF

SCK

Total Unadjusted Error (3V Supply)

ERROR (ppm)

–2

–4

= –55°C, –45°C, 25°C, 90°C

= INTERNAL OSC/50Hz REJECTION

= EXTERNAL CLOCK SOURCE

= INTERNAL OSC/60Hz REJECTION

GND

SDO

3-WIRE

SPI INTERFACE

–6

–8

–10

2420 TA01

= 3V

REF

= 2.5V

0.5

1.5

2.0

1.0

INPUT VOLTAGE (V)

2.5

2420 G01

LTC2420CS8 Related Products

	LTC2420CS8	LTC2420CS8#PBF	LTC2420CS8#TRPBF	LTC2420IS8#PBF	LTC2420IS8#TRPBF	LTC2420IS8
Description	1-Channel Single ADC Delta-Sigma 7.5sps 20-bit Serial 8-Pin SOIC N	1-Channel Single ADC Delta-Sigma 7.5sps 20-bit Serial 8-Pin SOIC N Tube	1-Channel Single ADC Delta-Sigma 7.5sps 20-bit Serial 8-Pin SOIC N T/R	1-Channel Single ADC Delta-Sigma 7.5sps 20-bit Serial 8-Pin SOIC N Tube	1-Channel Single ADC Delta-Sigma 7.5sps 20-bit Serial 8-Pin SOIC N T/R	1-Channel Single ADC Delta-Sigma 7.5sps 20-bit Serial 8-Pin SOIC N
EU restricts the use of certain hazardous substances	Not Compliant	Compliant	Compliant	Compliant	Compliant	Not Compliant
ECCN (US)	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
Part Status	Unconfirmed	Active	Active	Active	Active	Unconfirmed
Converter Type	Temperature Measurement	Temperature Measurement	Temperature Measurement	Temperature Measurement	Temperature Measurement	Temperature Measurement
Architecture	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma
Resolution	20bit	20bit	20bit	20bit	20bit	20bit
Number of ADCs	1	1	1	1	1	1
Number of Input Channels	1	1	1	1	1	1
Sampling Rate	7.5sps	7.5sps	7.5sps	7.5sps	7.5sps	7.5sps
Digital Interface Type	Serial (3-Wire, SPI, Microwire)	Serial (3-Wire, SPI, Microwire)	Serial (3-Wire, SPI, Microwire)	Serial (3-Wire, SPI, Microwire)	Serial (3-Wire, SPI, Microwire)	Serial (3-Wire, SPI, Microwire)
Input Type	Voltage	Voltage	Voltage	Voltage	Voltage	Voltage
Input Signal Type	Single-Ended	Single-Ended	Single-Ended	Single-Ended	Single-Ended	Single-Ended
Voltage Reference	External	External	External	External	External	External
Polarity of Input Voltage	Unipolar	Unipolar	Unipolar	Unipolar	Unipolar	Unipolar
Voltage Supply Source	Single	Single	Single	Single	Single	Single
Input Voltage	6.188V	6.188V	6.188V	6.188V	6.188V	6.188V
Minimum Single Supply Voltage (V)	2.7	2.7	2.7	2.7	2.7	2.7
Typical Single Supply Voltage (V)	3.3\|5	5\|3.3	5\|3.3	3.3\|5	5\|3.3	3.3\|5
Maximum Single Supply Voltage (V)	5.5	5.5	5.5	5.5	5.5	5.5
Integral Nonlinearity Error	20ppm of Vref	20ppm of Vref	20ppm of Vref	20ppm of Vref	20ppm of Vref	20ppm of Vref
Full Scale Error	10ppm of Vref	10ppm of Vref	10ppm of Vref	10ppm of Vref	10ppm of Vref	10ppm of Vref
No Missing Codes (bit)	20	20	20	20	20	20
Sample and Hold	No	No	No	No	No	No
Single-Ended Input	Yes	Yes	Yes	Yes	Yes	Yes
Digital Supply Support	No	No	No	No	No	No
Maximum Operating Temperature (°C)	70	70	70	85	85	85
Supplier Temperature Grade	Commercial	Commercial	Commercial	Industrial	Industrial	Industrial
Pin Count	8	8	8	8	8	8
Standard Package Name	SOP	SOP	SOP	SOP	SOP	SOP
Supplier Package	SOIC N	SOIC N	SOIC N	SOIC N	SOIC N	SOIC N
Mounting	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package Height	1.5(Max)	1.5(Max)	1.5(Max)	1.5(Max)	1.5(Max)	1.5(Max)
Package Length	5(Max)	5(Max)	5(Max)	5(Max)	5(Max)	5(Max)
Package Width	3.99(Max)	3.99(Max)	3.99(Max)	3.99(Max)	3.99(Max)	3.99(Max)
PCB changed	8	8	8	8	8	8
Lead Shape	Gull-wing	Gull-wing	Gull-wing	Gull-wing	Gull-wing	Gull-wing
HTS	-	8542.39.00.01	8542.39.00.01	8542.39.00.01	-	8542.39.00.01
Packaging	-	Tube	Tape and Reel	Tube	Tape and Reel	-

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