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LTC2420IS8#PBF

Description
IC ADC 20BIT MICRPWR W/OSC 8SOIC
CategoryAnalog mixed-signal IC    converter   
File Size385KB,36 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
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LTC2420IS8#PBF Overview

IC ADC 20BIT MICRPWR W/OSC 8SOIC

LTC2420IS8#PBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
MakerLinear ( ADI )
Parts packaging codeSOIC
package instructionSOP, SOP8,.25
Contacts8
Manufacturer packaging codeS8
Reach Compliance Codecompliant
ECCN codeEAR99
Is SamacsysN
Maximum analog input voltage6.1875 V
Minimum analog input voltage-0.0125 V
Maximum conversion time163440 µs
Converter typeADC, DELTA-SIGMA
JESD-30 codeR-PDSO-G8
JESD-609 codee3
length4.9 mm
Maximum linear error (EL)0.1375%
Humidity sensitivity level1
Number of analog input channels1
Number of digits20
Number of functions1
Number of terminals8
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Output bit codeBINARY
Output formatSERIAL
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP8,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)260
power supply3/5 V
Certification statusNot Qualified
Maximum seat height1.75 mm
Nominal supply voltage3.3 V
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width3.9 mm
Base Number Matches1
LTC2420
20-Bit
µPower
No Latency
∆Σ
TM
ADC in SO-8
FEATURES
s
s
s
s
s
s
DESCRIPTIO
s
s
s
s
s
s
s
s
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
CC
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
CC
. 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
TM
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
s
s
s
s
s
s
s
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
1
V
CC
LTC2420
REFERENCE
VOLTAGE
0.1V TO V
CC
ANALOG
INPUT RANGE
–0.12V
REF
TO 1.12V
REF
2
V
REF
SCK
7
F
O
8
Total Unadjusted Error (3V Supply)
10
8
V
CC
6
4
ERROR (ppm)
2
0
–2
–4
T
A
= –55°C, –45°C, 25°C, 90°C
= INTERNAL OSC/50Hz REJECTION
= EXTERNAL CLOCK SOURCE
= INTERNAL OSC/60Hz REJECTION
3
4
V
IN
GND
SDO
CS
6
5
3-WIRE
SPI INTERFACE
–6
–8
–10
2420 TA01
0
U
V
CC
= 3V
V
REF
= 2.5V
0.5
1.5
2.0
1.0
INPUT VOLTAGE (V)
2.5
2420 G01
U
U
1

LTC2420IS8#PBF Related Products

LTC2420IS8#PBF LTC2420CS8#TR LTC2420CS8#PBF LTC2420IS8#TR LTC2420IS8#TRPBF LTC2420CS8#TRPBF
Description IC ADC 20BIT MICRPWR W/OSC 8SOIC IC A/D conv 20bit micrpwr 8-soic IC adc 20bit micrpwr W/osc 8soic IC adc 20bit micropower 8soic IC ADC 20BIT MICRPWR W/OSC 8SOIC IC ADC 20BIT MICRPWR W/OSC 8SOIC
Brand Name Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology
Is it Rohs certified? conform to incompatible conform to incompatible conform to conform to
Parts packaging code SOIC SOIC SOIC SOIC SOIC SOIC
package instruction SOP, SOP8,.25 SOP, SOP8,.25 SOP, SOP8,.25 SOP, SOP8,.25 SOP, SOP,
Contacts 8 8 8 8 8 8
Manufacturer packaging code S8 S8 S8 S8 S8 S8
Reach Compliance Code compliant not_compliant compliant not_compliant compliant compliant
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Maximum analog input voltage 6.1875 V 6.1875 V 6.1875 V 6.1875 V 6.1875 V 6.1875 V
Minimum analog input voltage -0.0125 V -0.0125 V -0.0125 V -0.0125 V -0.0125 V -0.0125 V
Maximum conversion time 163440 µs 163440 µs 163440 µs 163440 µs 163440 µs 163440 µs
Converter type ADC, DELTA-SIGMA ADC, DELTA-SIGMA ADC, DELTA-SIGMA ADC, DELTA-SIGMA ADC, DELTA-SIGMA ADC, DELTA-SIGMA
JESD-30 code R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8
JESD-609 code e3 e0 e3 e0 e3 e3
length 4.9 mm 4.9 mm 4.9 mm 4.9 mm 4.9 mm 4.9 mm
Maximum linear error (EL) 0.1375% 0.1375% 0.1375% 0.1375% 0.1375% 0.1375%
Humidity sensitivity level 1 1 1 1 1 1
Number of analog input channels 1 1 1 1 1 1
Number of digits 20 20 20 20 20 20
Number of functions 1 1 1 1 1 1
Number of terminals 8 8 8 8 8 8
Maximum operating temperature 85 °C 70 °C 70 °C 85 °C 85 °C 70 °C
Output bit code BINARY BINARY BINARY BINARY BINARY BINARY
Output format SERIAL SERIAL SERIAL SERIAL SERIAL SERIAL
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOP SOP SOP SOP SOP SOP
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) 260 235 260 235 260 260
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 1.75 mm 1.75 mm 1.75 mm 1.75 mm 1.75 mm 1.75 mm
Nominal supply voltage 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V
surface mount YES YES YES YES YES YES
Temperature level INDUSTRIAL COMMERCIAL COMMERCIAL INDUSTRIAL INDUSTRIAL COMMERCIAL
Terminal surface Matte Tin (Sn) Tin/Lead (Sn/Pb) Matte Tin (Sn) Tin/Lead (Sn/Pb) Matte Tin (Sn) Matte Tin (Sn)
Terminal form GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING
Terminal pitch 1.27 mm 1.27 mm 1.27 mm 1.27 mm 1.27 mm 1.27 mm
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature 30 20 30 20 30 30
width 3.9 mm 3.9 mm 3.9 mm 3.9 mm 3.9 mm 3.9 mm
Base Number Matches 1 1 1 1 1 1
Maker Linear ( ADI ) - - Linear ( ADI ) Linear ( ADI ) Linear ( ADI )
Is Samacsys N - - N N N
Encapsulate equivalent code SOP8,.25 SOP8,.25 SOP8,.25 SOP8,.25 - -
power supply 3/5 V 3/5 V 3/5 V 3/5 V - -
technology CMOS CMOS CMOS CMOS - -
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