LTC2420 - LTC2420是20-Bit μPower No Latency Delta Sigma? ADC in SO-8
LTC2420是Linear公司的一款无延迟增量累加 ADC产品，LTC2420是20-Bit μPower No Latency Delta Sigma? ADC in SO-8，本站介绍了LTC2420的封装应用图解、特点和优点、功能等，并给出了与LTC2420相关的凌力尔特元器件型号供参考。
LTC2420 - 20-Bit μPower No Latency Delta Sigma? ADC in SO-8
LTC2420 - 20-Bit μPower No Latency Delta Sigma? ADC in SO-8 - Linear Technology（凌力尔特）
功能描述
The LTC2420 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 MICROWIRE? protocols.
特点
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 VCC 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应用
Weight Scales Direct Temperature Measurement Gas Analyzers Strain-Gage Transducers Instrumentation Data Acquisition Industrial Process Control 4-Digit DVMs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) |
| LTC2420CS8 | SO-8 | C | $5.10 | $4.25 |
| LTC2420CS8#PBF | SO-8 | C | $5.10 | $4.25 |
| LTC2420CS8#TR | SO-8 | C | | $4.30 |
| LTC2420CS8#TRPBF | SO-8 | C | | $4.30 |
| LTC2420IS8 | SO-8 | I | $5.50 | $4.70 |
| LTC2420IS8#PBF | SO-8 | I | $5.50 | $4.70 |
| LTC2420IS8#TR | SO-8 | I | | $4.75 |
| LTC2420IS8#TRPBF | SO-8 | I | | $4.75 |
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