LTC2420CS8 datasheet, PDF - EEWORLD Datasheet

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LTC2420CS8: Description20-Bit mPower No Latency DSTM ADC in SO-8; CategoryAnalog mixed-signal IC converter; File Size393KB，36 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html

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LTC2420CS8 Overview

20-Bit mPower No Latency DSTM ADC in SO-8

LTC2420CS8 Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	incompatible
Parts packaging code	SOIC
package instruction	SOP, SOP8,.25
Contacts	8
Manufacturer packaging code	S8
Reach Compliance Code	_compli
ECCN code	EAR99
Maximum analog input voltage	6.1875 V
Minimum analog input voltage	-0.0125 V
Maximum conversion time	163440 µs
Converter type	ADC, DELTA-SIGMA
JESD-30 code	R-PDSO-G8
JESD-609 code	e0
length	4.9 mm
Maximum linear error (EL)	0.1375%
Humidity sensitivity level	1
Number of analog input channels	1
Number of digits	20
Number of functions	1
Number of terminals	8
Maximum operating temperature	70 °C
Minimum operating temperature
Output bit code	BINARY
Output format	SERIAL
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Encapsulate equivalent code	SOP8,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	235
power supply	3/5 V
Certification status	Not Qualified
Maximum seat height	1.75 mm
Nominal supply voltage	3.3 V
surface mount	YES
technology	CMOS
Temperature level	COMMERCIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	20
width	3.9 mm
Base Number Matches	1

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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	LTC2420	LTC2420IS8	LTC2420_09
Description	20-Bit mPower No Latency DSTM ADC in SO-8	20-Bit mPower No Latency DSTM ADC in SO-8	20-Bit mPower No Latency DSTM ADC in SO-8	20-Bit mPower No Latency DSTM ADC in SO-8

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