linear chip-ASO8522S
ASO8522S是国科安芯研制的一款精密运算放大器。芯片采用斩波稳零技术，让失调电压与失调温漂拥有极佳的长期稳定性。单路运放静态电流仅21uA，同时可实现350KHz的带宽。这款小尺寸高精度运算放大器具备高输入阻抗，输入、输出均支持轨到轨电压摆幅。该器件的偏置电流在全温范围内保持稳定，因此高输入阻抗类应用无需针对温度变化做校准补偿。ASO8522S采用先进抗辐照加固设计，可应用于商业航天、核电站等高安全需求场景。
Product Details
- 低失调电压：±1.5uV
- 低失调温漂：±0.008uV/℃
- 低输入偏置电流：80pA
- 低噪声：1.1uVp-p（0.1Hz～10Hz）
- 输入、输出均支持轨到轨摆幅
- 高增益、高共模抑制比、高电源抑制比：115dB
- 高压摆率：0.23uV/us
- 增益带宽积：350KHz
- 单路运放静态电流：21uA
- 单电源工作电压：1.8V～5.5V
- 工作温度范围： -55°C to 125°C
- 封装: SOP8
- SEU: ≥37MeV.cm²/mg或10−5次/器件.天（商业航天级）
- SEL: ≥37MeV.cm²/mg（商业航天级）
- TID: ≥100krad（Si）（商业航天级）
封装类型：SOP8
抗辐照：
- SEU: ≥37MeV.cm²/mg或10−5次/器件.天（商业航天级）
- SEL: ≥37MeV.cm²/mg（商业航天级）
- TID: ≥100krad（Si）（商业航天级）
典型应用
星载微弱传感器信号调理（核心场景）
±1.5μV超低失调电压：普通运放失调动辄几毫伏，放大一百倍后引入的误差可达数百毫伏，ASO8522S仅引入不到0.15mV的误差，无需外部调零电路；
±0.008μV/℃极低温漂：以K型热电偶（灵敏度约41μV/℃）为例，全温范围（-55℃~+125℃）等效温度误差仅约0.07℃，而普通运放可能高达46℃，这意味着卫星热控系统可直接进行高精度温度采集，无需在轨校准；
80pA偏置电流：高阻抗传感器（如光电二极管用于星敏感器，输出电流在nA至μA级别）可以直接接入，偏置引入的误差可忽略不计。
高精度 ADC 采样前端
星载电池管理系统电流检测
辐射环境传感模块
高精度差分采集仪表
安全级仪控系统（DCS）信号隔离前端
Product Manual
ASO8522S数据手册V1.0.pdfRelated Products
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