WMSIC Electronic Components

HGSEMI CA3140AM/TR CA3140AM

ModelCA3140AM/TR
PackageSOP-8
BrandHGSEMI
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
HGSEMI CA3140AM / TR
Type
HGSEMI
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HGSEMI
Electronic Component
CA3140AM/TR
Electronic Component
1
Package
SOP-8
Electronic Component
Operational Amplifier
Electronic Component
0.077g
Electronic Component
1
Electronic Component
BM0227498550
Operating Temperature
10℃~+85℃
Amplifier
1
Output Current
45mA
(SR)
9V/us
Electronic Component
Electronic Component
Electronic Component
2500
(GBW)
4.5MHz

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

CA3140AM/TR 产品概述

一、产品简介

CA3140AM/TR 是华冠(HGSEMI)推出的一款 BiMOS 运算放大器,单路设计,封装为 SOP-8。器件结合了 MOSFET 输入级与双极性输出级的优点,具有极高的输入阻抗、较低的噪声与良好的输出驱动能力,适合对输入偏置电流敏感且需要中等带宽与快速响应的模拟电路场合。

二、主要性能特点

  • 输入:MOSFET 输入级,输入电流极小,适用于高阻抗传感器和电荷检测前端。
  • 噪声:噪声密度 eN = 40 nV/√Hz(@1 kHz),在小信号放大和精密测量中表现良好。
  • 带宽与速率:增益带宽积(GBP)4.5 MHz,压摆率(SR)9 V/μs,兼顾低频精度与中等速率的信号处理需求。
  • 电源与驱动:最大电源电压差(Vdd–Vss)36 V,典型双电源工作范围 VEE~VCC 为 ±15 V;输出电流可达 45 mA,能驱动常见负载和中等负载电容。
  • 温度与可靠性:工作温度范围 -10 ℃~+85 ℃,适合多数工业与商业应用环境。

三、主要规格参数(摘要)

  • 噪声密度:40 nV/√Hz @1 kHz
  • 最大电源差:36 V
  • 增益带宽积:4.5 MHz
  • 压摆率:9 V/μs
  • 输出电流:45 mA
  • 放大器数:单路
  • 工作温度:-10 ℃ ~ +85 ℃
  • 封装:SOP-8(表面贴装)
  • 品牌:HGSEMI(华冠)

四、推荐应用场景

  • 精密仪表前端与放大器(高输入阻抗需求场合)
  • 传感器信号调理(温度、压力、电流感测等)
  • 主动滤波器、积分器与微分器设计
  • 数据采集前置放大与缓冲器
  • 小功率驱动与通用模拟信号处理电路

五、使用要点与注意事项

  • 电源去耦:为保证稳定性能与抑制高频振荡,建议在电源引脚靠近芯片处并联 0.01 μF~0.1 μF 陶瓷电容与 10 μF 旁路电容。
  • 负载驱动:虽然输出电流可达 45 mA,但长期大电流工作会导致发热,应评估功耗并考虑散热或限制负载电流。
  • 输入保护:MOSFET 输入对静电和反向电压敏感,焊接和装配时注意防静电,必要时在输入端添加限流或钳位电路。
  • 共模与摆幅:在接近电源轨的共模电压下,输入和输出摆幅受限,设计时留有裕量,避免进入饱和区影响线性度。
  • 温度漂移:在较宽温度范围内,偏置电压和偏流会发生变化,精密应用建议校准或加温补偿。

六、封装与采购信息

CA3140AM/TR 以 SOP-8 表面贴装封装提供,适合批量贴片生产与自动化装配。型号后缀 TR 通常表示卷带(Tape & Reel)包装,便于 SMT 产线使用。采购时请确认供应商(HGSEMI)管控的物料证明和完整规格书,以便获取详细的电气特性曲线与应用电路参考。

总结:CA3140AM/TR 是一款兼顾高输入阻抗与中等带宽、较快压摆率的通用 BiMOS 运放,适合精密前端与通用模拟信号处理场合。正确的电源去耦、输入保护与热管理可保证器件长期稳定可靠运行。

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