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HGSEMI OPA2277UAM/TR OPA2277UAM
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- HGSEMI OPA2277UAM / TR
- Type
- HGSEMI
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- HGSEMI
- Electronic Component
- OPA2277UAM/TR
- Electronic Component
- 1
- Package
- SOIC-8
- Electronic Component
- Precision Op Amp
- Electronic Component
- 0.232g
- Electronic Component
- 1
- Features
- Built-in; positions
- Electronic Component
- BM0227708176
- Operating Temperature
- 20℃~+85℃
- Output Current
- 35mA
- (SR)
- 0.8V/us
- Static Current(Iq)
- 3.5mA
- Electronic Component
- Electronic Component
- Electronic Component
- 2500
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
OPA2277UAM/TR 产品概述
一、产品简介
OPA2277UAM/TR 是华冠（HGSEMI）推出的双路低噪声、高精度运算放大器，封装为 SOIC-8。器件以超低输入失调、电流和低噪声为主要特色，适用于精密信号调理与测量接口场合。
二、主要参数（典型值）
- 共模抑制比 (CMRR)：140 dB
- 输入噪声密度 (eN)：8 nV/√Hz @ 1 kHz
- 最大电源差 (VDD–VSS)：36 V
- 推荐双电源范围 (VEE~VCC)：2 V ~ 18 V
- 输入失调电压 (Vos)：20 µV
- 输入失调电压温漂 (Vos TC)：250 nV/°C
- 输入偏置电流 (IB)：1 nA；输入失调电流 (IOS)：1 nA
- 增益带宽积 (GBP)：1 MHz
- 压摆率 (SR)：1 V/µs
- 静态电流 (Iq)：790 µA
- 输出电流：35 mA
- 工作温度：-20 ℃ ~ +85 ℃
- 放大器数：双路；封装：SOIC-8
三、性能亮点与适用场景
该器件的核心优势在于极低的直流误差（20 µV）与极高的共模抑制（140 dB），配合 8 nV/√Hz 的低噪声，使其非常适合以下应用：
- 精密仪表放大、差分测量放大器
- 传感器前端（桥式应变计、热电偶、低频电流/电压采样）
- ADC 驱动、低噪声缓冲器与低频滤波器
注意：由于 GBP 为 1 MHz、SR 为 1 V/µs，器件更适合低频精密信号处理，不适用于需高速或大振幅快速边沿的场合。
四、设计与布局建议
- 电源旁路：在 VCC/VEE 近端放置 0.1 µF 陶瓷与 10 µF 旁路电容，减小电源噪声与振铃。
- 输入布局：对低偏置电流与低噪声特性敏感，输入引脚应尽量缩短走线，必要时采用屏蔽与接地环隔离高阻节点。
- 负载与稳定性：避免直接驱动大容性负载；若需驱动容性元件，加上小串联电阻以保障稳定性。
- 温漂管理：长时间高精度测量时，注意器件自身温度梯度对 Vos 的影响，必要时做温度补偿或恒温控制。
五、选型与注意事项
- 输出电流峰值约 35 mA，短路与大电流工作会增加发热，应关注封装温升与功耗限制。
- 对于需要更高带宽或更快压摆率的应用，应考虑带宽/速率更高的型号。
- 该器件适合单电源或对称双电源使用，确认系统电源差不超过器件最大值（36 V）。
- 订购信息：OPA2277UAM/TR，品牌 HGSEMI（华冠），封装 SOIC-8。
总结：OPA2277UAM/TR 以其出色的直流精度、超低噪声和高 CMRR，为低频精密测量与传感器接口提供了可靠的解决方案。在布局、电源去耦和负载管理到位的前提下，能在多种精密电子系统中发挥稳定、高精度的性能。
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