OPA381 精确低功耗高速互阻抗放大器

The OPA381 family of transimpedance amplifiers provides 18MHz of Gain Bandwidth (GBW), with extremely high precision, excellent long-term stability, and very low 1/f noise. The OPA381 features an offset voltage of 25µV (max), offset drift of 0.1µV/°C (max), and bias current of 3pA. The OPA381 far exceeds the offset, drift, and noise performance that conventional JFET op amps provide.

The signal bandwidth of a transimpedance amplifier depends largely on the GBW of the amplifier and the parasitic capacitance of the photodiode, as well as the feedback resistor. The 18MHz GBW of the OPA381 enables a trans-impedance bandwidth of >: 250kHz in most configurations. The OPA381 is ideally suited for fast control loops for power level measurement on an optical fiber


OPA381
Number of Channels 1  
Total Supply Voltage (V)(Min)(+5V=5, +/-5V=10) 2.7  
Total Supply Voltage (V)(Max)(+5V=5, +/-5V=10) 5.5  
Iq per channel(Max)(mA) 1  
GBW(Typ)(MHz) 18  
Slew Rate(Typ)(V/us) 12  
VIO (25 deg C)(Max)(mV) 0.025  
Offset Drift(Typ)(uV/C) 0.03  
IIB(Max)(pA) 50  
CMRR(Min)(dB) 95  
Vn at 1kHz(Typ)(nV/rtHz) 114  
Rail-Rail Out  
Rating Catalog  
Pin/Package 8MSOP, 8SON  
Operating Temperature Range(C) -40 to 125  
Approx. Price (US$) 0.75 | 1ku
OPA381 特性
OPA381 芯片订购指南
器件 状态 温度 价格(美元) 封装 | 引脚 封装数量 | 封装载体 丝印标记
OPA381AIDGKR ACTIVE -40 to 125 0.75 | 1ku MSOP (DGK) | 8 2500 | LARGE T&R  
OPA381AIDGKRG4 ACTIVE -40 to 125 0.75 | 1ku MSOP (DGK) | 8 2500 | LARGE T&R  
OPA381AIDGKT ACTIVE -40 to 125 0.90 | 1ku MSOP (DGK) | 8 250 | SMALL T&R  
OPA381AIDGKTG4 ACTIVE -40 to 125 0.90 | 1ku MSOP (DGK) | 8 250 | SMALL T&R  
OPA381AIDRBR ACTIVE -40 to 125 0.75 | 1ku SON (DRB) | 8 3000 | LARGE T&R  
OPA381AIDRBRG4 ACTIVE -40 to 125 0.75 | 1ku SON (DRB) | 8 3000 | LARGE T&R  
OPA381AIDRBT ACTIVE -40 to 125 0.90 | 1ku SON (DRB) | 8 250 | SMALL T&R  
OPA381AIDRBTG4 ACTIVE -40 to 125 0.90 | 1ku SON (DRB) | 8 250 | SMALL T&R  
OPA381 质量与无铅数据
器件 环保计划* 铅/焊球涂层 MSL 等级/回流焊峰 环保信息与无铅 (Pb-free) DPPM / MTBF / FIT 率
OPA381AIDGKR Green (RoHS & no Sb/Br)  CU NIPDAUAG Level-2-260C-1 YEAR OPA381AIDGKR OPA381AIDGKR
OPA381AIDGKRG4 Green (RoHS & no Sb/Br)  CU NIPDAUAG Level-2-260C-1 YEAR OPA381AIDGKRG4 OPA381AIDGKRG4
OPA381AIDGKT Green (RoHS & no Sb/Br)  CU NIPDAU  Level-2-260C-1 YEAR OPA381AIDGKT OPA381AIDGKT
OPA381AIDGKTG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-2-260C-1 YEAR OPA381AIDGKTG4 OPA381AIDGKTG4
OPA381AIDRBR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-2-260C-1 YEAR OPA381AIDRBR OPA381AIDRBR
OPA381AIDRBRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-2-260C-1 YEAR OPA381AIDRBRG4 OPA381AIDRBRG4
OPA381AIDRBT Green (RoHS & no Sb/Br)  CU NIPDAU  Level-2-260C-1 YEAR OPA381AIDRBT OPA381AIDRBT
OPA381AIDRBTG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-2-260C-1 YEAR OPA381AIDRBTG4 OPA381AIDRBTG4
OPA381 应用技术支持与电子电路设计开发资源下载
  1. OPA381 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器仪运算放大器 (Op Amp)产品选型与价格 . xls
  3. 所选封装材料的热学和电学性质 (PDF 645 KB)
  4. 高速数据转换 (PDF 1967 KB)
  5. 在 PSPICE 中使用德州仪器 (TI) SPICE 模型 (zhca088.HTM, 8 KB)
  6. PowerPAD™ Thermally Enhanced Package (slma002g.HTM, 8 KB)
  7. 运算放大器的单电源操作 (PDF 2174 KB)
  8. Tuning in Amplifiers (PDF 44 KB)
  9. Op Amp Performance Analysis (PDF 76 KB)
  10. An Error Analysis of the ISO102 in a Small Signal Measuring Application (PDF 29 KB)
  11. Level Shifting Signals with Differential Amplifiers (PDF 23 KB)
  12. Operational Amplifier Macromodels: A Comparison (PDF 59 KB)
OPA381 工具与软件
名称 型号 工具/软件类型
音频的快速搜索选择工具 AUDIO_SELECTION_TOOL 免费评估工具
OPA381 评估模块 OPA381EVM 开发电路板/EVM
用于音频转换器的软件驱动程序 CODECDRIVERS-SW 应用软件