Texas Instruments TLV8811/TLV8812精密运算放大器
Texas Instruments TLV8811/TLV8812精密运算放大器是超低功率运算放大器，非常适合用于电池供电无线设备和低功耗有线设备中的成本优化型、“常开”感测应用。 这些器件具有6kHz带宽、425nA静态电流以及削减至500µV以下的偏移电压。 这些放大器具备高精度特性，同时能够为注重电池寿命的设备（如CO气体探测器和便携式电子器件）将功耗降到最低。 这类器件还具有可实现毫微微安偏置电流的CMOS输入级，从而降低IBIAS和IOS误差，避免对高源阻抗感测应用产生影响。 此外，内置的EMI保护功能可降低器件对手机、WiFi、无线电发射器及标签阅读器所发出意外射频(RF)信号的敏感度。
These amplifiers provide high precision while minimizing power consumption in equipment such as CO gas detectors and portable electronic devices where operational battery life is critical. Texas Instruments TLV8811/TLV8812 also have a CMOS input stage enabling fempto-amp bias currents, thereby reducing IBIAS and IOS errors that would otherwise impact high source impedance sensing applications. Additionally, built-in EMI protection reduces sensitivity to unwanted RF signals from mobile phones, WiFi, radio transmitters, and tag readers.
特性
- For cost-optimized systems
- 425nA/channel nanopower supply current
- 500µV (max) offset voltage
- 1µV/°C TcVos
- 6kHz gain-bandwidth
- Unity-gain stable
- 100fA low input bias current
- 1.7V to 5.5V wide supply range
- Rail-to-rail output
- No output reversals
- EMI protection
- –40°C to 125°C temperature range
- Industry-standard packages
- Single in 5-pin SOT-23
- Dual in 8-pin VSSOP
应用
- Gas detectors (CO and O2)
- PIR motion detectors
- Current sensing
- Thermostats
- IoT (Internet of Things) remote sensors
- Active RFID readers and tags
- Portable medical equipment
- Portable glucose monitors
Functional Diagram
Related Evaluation Tools
Texas Instruments Universal Operational Amplifier EVMs
General purpose blank circuit boards that simplify the evaluation of operational amplifiers.
发布日期: 2016-12-29
| 更新日期: 2022-03-11