WMSIC Electronic Components

ST TS4890IST

ModelTS4890IST
PackageMSOP-8
BrandST
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 23+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
ST(STMicroelectronics) TS4890IST
Type
ST
Minimum package
4000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ST(STMicroelectronics)
Electronic Component
TS4890IST
Electronic Component
1
Package
MSOP-8
Electronic Component
Audio Power Amplifier
Electronic Component
0.352g
Electronic Component
1
Features
Switch
Electronic Component
BM0265396388
Operating Temperature
40℃~+85℃
Operating Voltage
2.5V~5.5V
Output Power
1Wx1@8Ω
Static Current(Iq)
6mA
Speaker Channel Count
Electronic Component
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.

TS4890IST音频功率放大器产品概述

一、产品定位与核心价值

TS4890IST是ST意法半导体推出的工业级宽温单声道音频功率放大器,聚焦「小体积、低功耗、高音质、抗干扰」四大核心需求,适配便携电子、工业控制、车载辅助等多场景的音频输出需求。其核心价值在于平衡了性能与成本——无需额外滤波电路即可实现纯净音频输出,同时满足极端温度下的稳定工作,适合对空间、功耗敏感的小型化产品设计。

二、关键性能参数深度解析

① 电源与功耗特性

TS4890IST兼容2.5V~5.5V宽电压范围,可适配多种主流电源方案:

  • 3.7V锂电池(便携设备常用);
  • 5V USB供电(桌面/车载设备);
  • 2.5V纽扣电池(低功耗小设备);
    无需额外升压/降压电路即可稳定工作。静态电流仅6mA,低负载或待机状态下功耗极低,显著延长电池续航时间(如便携蓝牙音箱单次充电可使用8~10小时)。

② 音频输出性能

作为单声道功放,其核心输出表现针对日常场景优化:

  • 额定功率:1W×1@8Ω,可驱动常见8Ω小型扬声器(如直径2英寸以内的便携音箱),满足近距离音频需求(如提示音、音乐播放);
  • 失真控制:总谐波失真+噪声(THD+N)仅0.15%,远低于普通功放1%的阈值,音频输出无明显杂音、破音,听感清晰;
  • 抗干扰能力:电源纹波抑制比(PSRR)达77dB,能有效抑制电源中的纹波噪声(如汽车电源、开关电源的干扰),确保音频纯净度。

③ 环境适应性

支持**-40℃~+85℃工业级宽温范围**,可稳定工作于极端环境:

  • 户外工业终端(如低温地区的巡检仪);
  • 车载场景(低温启动、高温暴晒下的仪表盘提示音);
    无需额外散热或温度补偿电路,提升产品可靠性。

三、封装与生产适配性

TS4890IST采用8-MiniSO封装(兼容MSOP-8),体积紧凑(约3mm×3mm),适合贴片自动化生产,可大幅节省PCB空间(比传统DIP封装节省60%以上),适配小型化产品设计:

  • 智能手环、智能开关(嵌入设备内部);
  • 车载仪表盘模块(紧凑空间布局);
  • 便携蓝牙音箱(小型化外观需求)。

封装引脚布局合理,焊接兼容性强(焊接温度≤260℃),降低了生产难度与成本。

四、典型应用场景

TS4890IST的性能特点使其覆盖多领域应用:

  1. 便携音频设备:蓝牙音箱、无线单声道耳机、便携MP3——低功耗延长续航,宽电压适配锂电池,高音质满足听感;
  2. 工业控制终端:手持巡检仪、PLC状态提示器——宽温适应户外/车间环境,抗干扰能力强;
  3. 车载辅助系统:仪表盘提示音模块、车载蓝牙提示器——宽温兼容汽车工作环境,高PSRR抑制电源纹波;
  4. 智能家居设备:智能开关、温湿度传感器——低功耗适配电池供电,小体积嵌入设备内部。

五、设计注意事项

  1. 电源输入并联10μF电解电容+0.1μF陶瓷电容,进一步滤除纹波;
  2. 输出端串联10Ω~20Ω电阻(保护扬声器,避免突发电流损坏);
  3. 扬声器阻抗需匹配8Ω(4Ω时功率约1.5W,但需注意散热);
  4. 焊接温度控制在260℃以内(符合MSOP封装规范)。

TS4890IST通过优化性能与成本,成为小功率音频输出场景的高性价比选择,尤其适合对空间、功耗、宽温有要求的产品设计,是ST意法半导体在音频功放领域的成熟方案之一。

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