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OPA345 低功耗单电源轨至轨运算放大器 MicroAmplifier(TM) 系列

The OPA344 and OPA345 series rail-to-rail CMOS operational amplifiers are designed for precision, low-power, miniature applications. The OPA344 is unity gain stable, while the OPA345 is optimized for gains greater than or equal to five, and has a gain-bandwidth product of 3MHz.

The OPA344 and OPA345 are optimized to operate on a single supply from 2.5V and up to 5.5V with an input common-mode voltage range that extends 300mV beyond the supplies. Quiescent current is only 250uA (max).

Rail-to-rail input and output make them ideal for driving sampling analog-to-digital converters. They are also well suited for general purpose and audio applications and providing I/V conversion at the output of D/A converters


OPA2345 OPA345 OPA4345
Number of Channels 2 1 4
Total Supply Voltage (V)(Min)(+5V=5, +/-5V=10) 2.5 2.5 2.5
Total Supply Voltage (V)(Max)(+5V=5, +/-5V=10) 5.5 5.5 5.5
Iq per channel(Max)(mA) 0.25 0.25 0.25
GBW(Typ)(MHz) 3 3 3
Slew Rate(Typ)(V/us) 2 2 2
VIO (25 deg C)(Max)(mV) 1 1 1
Offset Drift(Typ)(uV/C) 3 3 3
IIB(Max)(pA) 10 10 10
CMRR(Min)(dB) 76 76 76
Vn at 1kHz(Typ)(nV/rtHz) 32 32 32
Rail-Rail In,Out In,Out In,Out
Rating Catalog Catalog Catalog
Pin/Package 8MSOP, 8SOIC 5SOT-23, 8SOIC 14SOIC, 14TSSOP
Approx. Price (US$) 0.75 | 1ku 0.55 | 1ku 1.20 | 1ku
OPA345 特性
OPA345 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
OPA345NA/250 ACTIVE   0.55 | 1ku SOT-23 (DBV) | 5 250 | SMALL T&R  
OPA345NA/250G4 ACTIVE   0.55 | 1ku SOT-23 (DBV) | 5 250 | SMALL T&R  
OPA345UA ACTIVE   0.55 | 1ku SOIC (D) | 8 75 | TUBE  
OPA345UAG4 ACTIVE   0.55 | 1ku SOIC (D) | 8 75 | TUBE  
OPA345 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
OPA345NA/250 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR OPA345NA/250 OPA345NA/250
OPA345NA/250G4 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR OPA345NA/250G4 OPA345NA/250G4
OPA345UA Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR OPA345UA OPA345UA
OPA345UAG4 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR OPA345UAG4 OPA345UAG4
OPA345 应用技术支持与电子电路设计开发资源下载
  1. OPA345 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. PowerPADTM 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)
OPA345 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
OPA345 评估模块 OPA345EVM 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