OPA1644 Sound-Plus 高性能、JFET 输入音频运算放大器

The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications.

The OPA1641, OPA1642, and OPA1644 rail-to-rail output swing allows increased headroom, making these devices ideal for use in any audio circuit. Features include 5.1nV/√Hz noise, low THD+N (0.00005%), a low input bias current of 2pA, and low quiescent current of 1.8mA per channel.

These devices operate over a very wide supply voltage range of ±2.25V to ±18V. The OPA1641, OPA1642, and OPA1644 series of op amps are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions


OPA1641 OPA1642 OPA1644
Number of Channels 1   2   4  
Total Supply Voltage (V)(Min)(+5V=5, +/-5V=10) 5   5   5  
Total Supply Voltage (V)(Max)(+5V=5, +/-5V=10) 36   36   36  
Iq per channel(Max)(mA) 2.3   2.3   2.3  
GBW(Typ)(MHz) 11   11   11  
Slew Rate(Typ)(V/us) 20   20   20  
Vn at 1kHz(Typ)(nV/rtHz) 5.1   5.1   5.1  
Rating Catalog   Catalog   Catalog  
Pin/Package 8MSOP, 8SOIC   8MSOP, 8SOIC   14SOIC, 14TSSOP  
Operating Temperature Range(C) -40 to 85   -40 to 85   -40 to 85  
Approx. Price (US$) 0.95 | 1ku   1.45 | 1ku   1.95 | 1ku 
OPA1644 特性
OPA1644 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
OPA1644AID ACTIVE -40 to 85 2.35 | 1ku SOIC (D) | 14 50 | TUBE  
OPA1644AIDR ACTIVE -40 to 85 1.95 | 1ku SOIC (D) | 14 2500 | LARGE T&R  
OPA1644AIPW ACTIVE -40 to 85 2.35 | 1ku TSSOP (PW) | 14 90 | TUBE  
OPA1644AIPWR ACTIVE -40 to 85 1.95 | 1ku TSSOP (PW) | 14 2000 | LARGE T&R  
OPA1644 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
OPA1644AID Green (RoHS & no Sb/Br)  CU NIPDAU  Level-2-260C-1 YEAR OPA1644AID OPA1644AID
OPA1644AIDR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-2-260C-1 YEAR OPA1644AIDR OPA1644AIDR
OPA1644AIPW Green (RoHS & no Sb/Br)  CU NIPDAU  Level-2-260C-1 YEAR OPA1644AIPW OPA1644AIPW
OPA1644AIPWR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-2-260C-1 YEAR OPA1644AIPWR OPA1644AIPWR
OPA1644 应用技术支持与电子电路设计开发资源下载
  1. OPA1644 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)
OPA1644 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
OPA1644 评估模块 OPA1644EVM 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