TP2121-TR/TP2112-VR Low Power OPA-3peak

The TP2121-TR/TP2112-VR are ultra-low power,precision CMOS op-amps featuring a maximum supply current of 950nA per amplifier with an ultra-low typical input bias current of 1pA.Analog trim and calibration routine reduce input offset voltage to below 1.5mV,and the precision temperature compensation technique makes offset voltage temperature drift at 0.5μV/°C,which allowing use of the TP2121-TR/TP2112-VR in systems with high gain without creating excessively large output offset errors.

The TP2121-TR/TP2112-VR are unity gain stable with 1,000nF capacitive load with a constant 18kHz GBWP,10mV/μs slew rate,which make them appropriate for low frequency applications,such as battery current monitoring and sensor conditioning.

The TP2121-TR/TP2112-VR 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 and rail-to-rail output characteristics allow the full power-supply voltage to be used for signal range.

The combined features make the TP2121-TR/TP2112-VR ideal choices for battery-powered applications because they 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 opamp.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 TP2121-TR/TP2112-VR op-amps.

1,Features

•Supply Current:950nA Maximum/Amplifier

•Stable 18kHz GBWP with 10mV/μs Slew Rate

•Offset Voltage:1.5mV Maximum

•Ultra-low VOS TC:0.5μV/°C

•Low Input Bias Current:1pA Typical

•High 120dB Open-Loop Voltage Gain

•Unity Gain Stable for 1,000nF Capacitive Load

•Rail-to-Rail Input/Output Voltage Range

•Outputs Source and Sink 20mA of Load Current

•No Phase Reversal for Overdriven Inputs

•Ultra-low Single-Supply Operation Down to+1.8V

•–40°C to 125°C Operation Range

•Robust 6kV–HBM and 1.5kV–CDM ESD Rating

•Green,Popular Type Package.

2,Applications

•Handsets and Mobile Accessories

•Current Sensing

•Wireless Remote Sensors,Active RFID Readers

•Environment/Gas/Oxygen Sensors

•Threshold Detectors/Discriminators

•Low Power Filters

•Battery or Solar Powered Devices

•Sensor Network Powered by Energy Scavenging