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LTC2431 - LTC2431是20-Bit No Latency Delta Sigma? ADC with Differential Input and Differential Reference

LTC2431是LINEAR凌力尔特公司的一款无延迟增量累加 ADC产品，LTC2431是LTC2431是20-Bit No Latency Delta Sigma? ADC with Differential Input and Differential Reference，本站介绍了LTC2431的封装应用图解、特点和优点、功能等，并给出了与LTC2431相关的LINEAR元器件型号供参考。

LTC2431 - LTC2431是20-Bit No Latency Delta Sigma? ADC with Differential Input and Differential Reference - 无延迟增量累加 ADC - 数据转换 - 凌力尔特

LTC2431 - 20-Bit No Latency Delta Sigma? ADC with Differential Input and Differential Reference

LTC2431 - 20-Bit No Latency Delta Sigma? ADC with Differential Input and Differential Reference - Linear Technology（凌力尔特）

功能描述

The LTC2430/LTC2431 are 2.7V to 5.5V micropower 20-bit differential Delta Sigma analog-to-digital converters with an integrated oscillator, 3ppm INL and 0.56ppm RMS noise. They use delta-sigma technology and provide single cycle settling time for multiplexed applications. Through a single pin, the LTC2430/LTC2431 can be configured for better than 110dB differential mode rejection at 50Hz or 60Hz ±2%, or they can be driven by an external oscillator for a user-defined rejection frequency. The internal oscillator requires no external frequency setting components.

The converters accept any external differential reference voltage from 0.1V to VCC for flexible ratiometric and remote sensing measurement configurations. The fullscale differential input range is from 0.5VREF to 0.5VREF. The reference common mode voltage, VREFCM, and the input common mode voltage, VINCM, may be independently set anywhere within GND to VCC. The DC common mode input rejection is better than 120dB.

The LTC2430/LTC2431 communicate through a flexible 3-wire digital interface that is compatible with SPI and MICROWIRE? protocols.

特点

Low Supply Current (200μA in Conversion Mode and 4μA in Autosleep Mode)

Differential Input and Differential Reference with GND to VCC Common Mode Range

3ppm INL, No Missing Codes

10ppm Full-Scale Error and 1ppm Offset

0.56ppm Noise, 20.8 ENOBs

No Latency: Digital Filter Settles in a Single Cycle. Each Conversion Is Accurate, Even After an Input Step

Single Supply 2.7V to 5.5V Operation

Internal OscillatorNo External Components Required

110dB Min, 50Hz/60Hz Notch Filter

Pin Compatible with 24-Bit LTC2410/LTC2411

应用

Direct Sensor Digitizer

Weight Scales

Direct Temperature Measurement

Gas Analyzers

Strain Gauge Transducers

Instrumentation

Data Acquisition

Industrial Process Control

DVMs and Meters

以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）

器件型号	封装	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量)
LTC2431CMS	MS-10	C	$4.55	$3.70
LTC2431CMS#PBF	MS-10	C	$4.55	$3.70
LTC2431CMS#TR	MS-10	C		$3.76
LTC2431CMS#TRPBF	MS-10	C		$3.76
LTC2431IMS	MS-10	I	$4.95	$4.00
LTC2431IMS#PBF	MS-10	I	$4.95	$4.00
LTC2431IMS#TR	MS-10	I		$4.06
LTC2431IMS#TRPBF	MS-10	I		$4.06

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