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LTC2420

Features: ` 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.` Internal Oscillator-No External Components Required` Fast Mode: 16-Bi...

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SeekIC No. : 004402068 Detail

LTC2420: Features: ` 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 Accura...

LTC2420 Data Sheet

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Part Number:
LTC2420
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

` 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.
` Internal Oscillator-No External Components Required
` Fast Mode: 16-Bit Noise, 12 Bits TUE at 100sps
` 110dB Min, 50Hz/60Hz Notch Filter
` Reference Input Voltage: 0.1V to VCC
` Live Zero-Extended Input Range Accommodates 12.5% Overrange and Underrange
` Single Supply 2.7V to 5.5V Operation
` Low Supply Current (200A) and Auto Shutdown
` Pin Compatible with 24-Bit LTC2400


Application

· Weight Scales
· Direct Temperature Measurement
· Gas Analyzers
· Strain-Gage Transducers
· Instrumentation
· Data Acquisition
· Industrial Process Control
· 4-Digit DVMs


Pinout

Connection Diagram


Specifications

Supply Voltage (VCC) to GND ........................0.3V to 7V
Analog Input Voltage to GND ....... 0.3V to (VCC + 0.3V)
Reference Input Voltage to GND .. 0.3V to (VCC + 0.3V)
Digital Input Voltage to GND ........ 0.3V to (VCC + 0.3V)
Digital Output Voltage to GND ...... 0.3V to (VCC + 0.3V)
Operating Temperature Range
    LTC2420C ................................................... 0to 70
    LTC2420I............................................... 40 to 85
Storage Temperature Range .................. 65 to 150
Lead Temperature (Soldering, 10 sec).................... 300


Description

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 VCC. With its extended input conversion range of 12.5% VREF to 112.5% VREF, 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 MICROWIRETM protocols.




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