ISL2671286

12-Bit, 20kSPS SAR ADC

Product Status: Mass Production

OVERVIEW

The ISL2671286 is a sampling SAR-type ADC which features excellent linearity over supply and temperature variations, and provides a drop-in compatible alternative to all ADS1286 performance grades. The robust high impedance input minimizes errors due to leakage currents, and specified measurement accuracy is maintained with input signals up to the supply rails.

The reference accepts inputs between 1.25V to 5.0V, providing design flexibility in a wide variety of applications. The ISL2671286 also features up to 8kV Human Body Model ESD survivability.

The serial digital interface is SPI compatible and is easily interfaced to all popular FPGAs and microcontrollers. Operating from a 5V supply, power dissipation is 1.4mW at a sampling rate of 20kSPS and just 15µW between conversions utilizing the
Auto Power-Down mode. These features make the ISL2671286 an excellent solution for remote industrial sensors and battery-powered instruments.

The ISL2671286 is available in an 8 Ld SOIC package and is specified for operation over the industrial temperature range of –40°C to +85°C.

KEY FEATURES

  • Drop-In Compatible with ADS1286 (All Performance Grades)
  • Simple SPI-compatible Serial Digital Interface
  • Guaranteed No Missing Codes
  • 20kHz Sampling Rate
  • +4.50V to +5.25V Supply
  • Low 280µA Operating Current (20kSPS)
  • Power-down Current between Conversions: 3µA
  • Excellent Differential Non-Linearity (0.75LSB Max)
  • Low THD: -83dB (Typ)
  • Pb-Free (RoHS Compliant)
  • Available in SOIC Package

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL2671286
Basic Information
生产状态
Mass Production
器件/通道数量
1
分辨率位
12
最大转换率 (kSPS)
20
积分非线性LSB
1
差分非线性LSB
0.75
SINAD (dbFS)
72
SFDR (dB)
-83 dB
功耗 (mW)
1.4
模拟电源电压最小值 (V)
4.5
模拟电源电压最大值 (V)
5.25
资质级别
Standard
采样
YES
温度范围
-40 to +85

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