3PEAK TP2191-TR

The TP2191(N) is a precision, ultra-low power CMOS op-amp featuring a maximum supply current of 900 nA with an ultra-low typical input bias current of 1 fA. Analog trim and calibration routine reduce input offset voltage to below 600 μV, and the precision temperature compensation technique makes offset voltage temperature drift at 0.4 μV/°C, which allowing use of the TP2191(N) in systems with high gain without creating excessively large output offset errors. The TP2191(N) is unity gain stable with a constant 18 kHz GBWP, 10 mV/μs slew rate, which make them appropriate for low frequency applications, such as battery current monitoring and sensor conditioning. The TP2191(N) can operate from a single-supply voltage of +1.8V to +6.0V or a dual-supply voltage of ±0.9V to ±3.0V. Beyond the rails input makes it very prominent in low voltage (≤ 3V) rail-to-rail input applications. The combined features make the TP2191(N) an ideal choice for battery-powered applications because it minimize errors due to power supply voltage variations over the lifetime of the battery and maintain high CMRR even for a rail-to-rail input op-amp. Mobile accessories, wireless remote sensing, backup battery sensors, and single-Li+ or 2-cell NiCd/Alkaline battery powered systems can benefit from the features of the TP2191(N) op-amp.

• 900 nA Maximum Supply Current
• Ultra-low Single-Supply Operation Down to +1.8V
• Ground-Sensing Input Common-Mode Range
• Outputs Swing Rail-to-Rail
• Offset Voltage: 0.6mV Maximum
• Ultra-low Vos TC; 0.4 μV/°C
• Ultra-low Input Bias Current: 1 fA Typical
• Stable 18 kHz GBWP with 10 mV/μs Slew Rate
• High 120 dB Open-Loop Voltage Gain
• Unity Gain Stable
• Outputs Source and Sink 20mA of Load Current
• No Phase Reversal for Overdriven Inputs
• Shutdown Pin Feature (TP2191N)
• -40°C to 125°C Operation Range
• Robust 8kV – HBM and 2kV – CDM ESD Rating
• Green, SC70/SOT23 Small Size Package

• Current Sensing
• Threshold Detectors/Discriminators
• Low Power Filters
• Wireless Remote Sensors, Active RFID Readers
• Environment/Gas/Oxygen Sensors
• Handsets and Mobile Accessories
• Battery or Solar Powered Devices
• Sensor Network Powered by Energy Scavenging