WMSIC Electronic Components

HGSEMI LM385Z-1.2 LM385Z

ModelLM385Z-1.2
PackageTO-92
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 Option 71406

Availability on request

Technical data

Product details

19 specifications

Core information

Product name
HGSEMI LM385Z-1.2
Type
HGSEMI
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HGSEMI
Electronic Component
LM385Z-1.2
Electronic Component
1
Package
TO-92
Electronic Component
Voltage Reference IC
Electronic Component
±0.3%
Electronic Component
0.2g
Electronic Component
1
Electronic Component
BM0264336349
Operating Temperature
0℃~+70℃
Electronic Component
30ppm/℃
Output Voltage
1.2V
Output Current
20mA
Output Type
Electronic Component
(10Hz-10kHz)
60uVrms

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

LM385Z-1.2精密基准电压源产品概述

LM385Z-1.2是华冠半导体(HGSEMI)推出的一款固定输出型精密基准电压源,专为需要稳定、低噪声电压参考的电子系统设计。该器件凭借高精度、低功耗、宽工作温度范围等核心特性,广泛应用于便携式仪器、工业控制、通信设备等领域,是替代同类进口基准器件的高性价比选择。

一、产品核心定位与应用场景

LM385Z-1.2定位于中小负载、低功耗场景下的精密电压基准,主要解决电子系统中“电压参考不稳定导致测量/控制精度下降”的问题。其典型应用场景包括:

  1. ADC/DAC基准参考:为模数/数模转换器提供稳定的1.2V电压基准,直接提升模拟量采集与输出的精度;
  2. 便携式测量仪器:如手持万用表、便携式示波器等电池供电设备,满足低功耗与高精度的双重需求;
  3. 工业控制模块:PLC模拟量输入/输出模块、传感器信号调理电路,保证工业现场的电压校准可靠性;
  4. 通信设备子系统:基站射频模块、光纤收发器的电压监测电路,提供稳定的参考电压源。

二、关键性能参数详解

LM385Z-1.2的核心性能参数经过HGSEMI严格校验,满足商业级应用的高精度要求,关键参数如下:

  • 固定输出电压:1.2V(常用低电压基准,兼容多数ADC/DAC的参考电压范围);
  • 初始精度:±0.3%(室温下输出电压偏差控制在±3.6mV以内,无需额外校准即可满足多数常规场景);
  • 温度系数:30ppm/℃(温度每变化1℃,输出电压变化30μV,如工作温度从0℃升至70℃,总电压变化仅为2.16mV,稳定性优异);
  • 最小阴极电流:8μA(启动与维持输出所需的最小电流极低,适合电池供电的低功耗系统,延长设备续航);
  • 噪声性能:10Hz~10kHz带宽内噪声为60μVrms(低噪声特性避免干扰精密测量电路,提升信号质量);
  • 工作温度范围:0℃~+70℃(覆盖商业级设备的常规工作环境,满足室内外多数场景需求);
  • 输出电流能力:20mA(可驱动中小负载,无需额外缓冲电路即可满足多数应用)。

三、封装与可靠性设计

LM385Z-1.2采用TO-92通孔封装,具有以下设计优势:

  1. 安装便捷:通孔引脚布局清晰,适合手工焊接与批量自动插件生产,降低生产难度与成本;
  2. 机械可靠性:TO-92封装的塑料外壳具有良好的抗冲击与抗振动性能,适应工业现场的轻微机械应力;
  3. 散热性:封装结构利于热量散发,保证器件在20mA输出电流下的长期稳定工作;
  4. HGSEMI校验认证:产品经过严格的性能测试与可靠性验证,符合相关电子元器件标准,确保批量一致性。

四、典型应用电路示例

以“ADC基准参考”为例,典型应用电路如下:

  • 将LM385Z-1.2的阴极接电源(如5V),阳极接地;
  • 在阴极与电源之间串联100Ω1kΩ限流电阻(保证阴极电流在8μA20mA之间);
  • 从阴极输出1.2V电压,直接连接到ADC的VREF引脚;
  • 可在输出端并联0.1μF陶瓷电容,进一步抑制高频噪声。

该电路结构简单,无需复杂外围元件,即可为ADC提供稳定的基准电压,提升测量精度。

五、产品优势总结

LM385Z-1.2相比同类产品,具有以下突出优势:

  1. 高精度与稳定性:±0.3%初始精度+30ppm/℃温度系数,满足精密测量需求;
  2. 低功耗设计:8μA最小阴极电流,适合电池供电的便携式设备;
  3. 低噪声特性:60μVrms噪声,不干扰敏感电路;
  4. 高性价比:国产HGSEMI品牌,性能与进口同类产品相当,成本更低;
  5. 易集成性:TO-92封装,外围电路简单,便于系统集成。

综上,LM385Z-1.2是一款性能优异、应用广泛的精密基准电压源,适合需要稳定电压参考的各类电子系统,是工业控制、测量仪器、通信设备等领域的理想选择。

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