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LX AD8551(LX) AD8551
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- LX AD8551(LX)
- Type
- SOT-23-5
- Minimum package
- 3000 卷
Technical parameters
- Electronic Component
- LX
- Electronic Component
- AD8551(LX)
- Electronic Component
- 1
- Package
- SOT-23-5
- Electronic Component
- Precision Op Amp
- Electronic Component
- 0.047g
- Electronic Component
- 1
- Electronic Component
- Output
- Features
- Electronic Component
- Electronic Component
- BM0264498260
- Operating Temperature
- 40℃~+125℃
- Output Current
- 50mA
- (SR)
- 2.3V/us
- Power Supply Voltage
- 2.4V~5.5V
- Static Current(Iq)
- 450uA
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
AD8551(LX) 精密零漂运放（SOT-23-5）产品概述
一、产品简介
AD8551(LX) 为灵星芯微（LX）推出的一款低失调、零漂移（自动稳零）精密运算放大器，封装为 SOT-23-5，适合空间受限且要求高精度和低温漂的便携式与工业测量应用。器件支持轨到轨输入与输出，单电源工作电压范围宽（2.4V 至 5.5V），兼顾低功耗与较强驱动能力。
二、主要特性
- 单电源电压：2.4 V ~ 5.5 V
- 输入失调电压 Vos：1 µV（典型）
- 输入失调电压温漂 Vos TC：8 nV/℃
- 增益带宽积 GBW：3.5 MHz
- 轨到轨输入与轨到轨输出，适合满量程信号采集
- 压摆率 SR：2.3 V/µs
- 共模抑制比 CMRR：120 dB
- 输入电压噪声密度 eN：15 nV/√Hz @ 1 kHz
- 输入偏置电流 Ib：400 pA；输入失调电流 Ios：200 pA
- 静态电流 Iq：450 µA（静态功耗低，适合电池供电）
- 输出驱动能力：可驱动至 50 mA 峰值
- 工作温度范围：-40 ℃ ~ +125 ℃
- 功能特性：零漂移 / 自动稳零，长期稳定性佳
三、典型应用
- 精密传感器信号调理（热电阻、霍尔、桥式传感器）
- 低速精密 ADC 驱动与前置放大器
- 工业数据采集与过程控制系统
- 医疗仪表与便携检测设备（对温漂与低噪声有严格要求的场合）
- 电池供电与便携式仪器的缓冲与放大电路
四、使用与布局建议
- 电源去耦：靠近 VCC 与 GND 引脚各放置 0.1 µF 陶瓷电容，并考虑 1 µF~10 µF 的旁路，优化低频与瞬态响应。
- 输入保护：若输入可能有大电压或反向电压，建议加入限流电阻或 TVS/钳位二极管保护。
- 负载与稳定性：器件为轨到轨输出且可驱动较大电流，但在驱动容性负载时可能需要串联输出电阻以保证稳定。
- 包装与热管理：SOT-23-5 封装散热受限，长期靠近额定输出电流工作时注意布局散热与铜箔面积。
- PCB 布局：信号回路短且直接，模拟地与电源地分区并在单点汇流，敏感输入远离开关噪声源。
- 零漂特性：器件采用自动稳零技术，长期漂移小；在对瞬态噪声极其敏感的场合，建议评估 chop/auto-zero 相关的微小干扰并采用滤波或采样抑制法。
五、封装与可靠性
- 品牌：LX（灵星芯微）
- 封装：SOT-23-5，适合空间受限应用与自动贴装生产工艺
- 环境适应：工作温度范围宽（-40 ℃ ~ +125 ℃），适合工业级应用
- 建议在可靠性设计中考虑 ESD 保护与焊接热循环对 SOT-23-5 的影响，按制造商的封装与焊接指南进行工艺控制。
总结：AD8551(LX) 以其 1 µV 级别的超低失调、极低温漂与零漂移稳定性，加上轨到轨输入/输出与宽电源范围，是低频高精度测量与便携仪表的优选放大器。在实际设计中结合良好的电源去耦、合适的输入保护与 PCB 布局，可充分发挥器件的精度与稳定性。若需参考电路或更多参数（如启动特性、失真、PSRR 等），建议索取完整数据手册。
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