Description：

TP211x is a series of ultra-low power, precisionCMOS operational amplifiers that provide a constant 10-kHz bandwidth and a 10-mV/μs slew rate with a maximumquiescent current of only 600 nA per amplifier. The groundsensing input common-mode range, which guarantees a1.5-mV VOS and an ultra-low 0.4-μV/°C VOS TC, enablesaccurate and stable measurement for both high-side andlow-side current sensing.The TP211x series has a carefully designed CMOS inputstage that outperforms competitors with a typically 0.1-fA IB. This ultra-low input current significantly reducesIB and IOS errors introduced in the giga-Ω resistance,high-impedance photodiode, and charge sense situations.The TP211x series is unity gain stable with a 1,000-nFcapacitive load. It can operate from a single-supply voltageof +1.8 V to +5.5 V or a dual-supply voltage of ±0.9 Vto ±2.75 V, and features ground-sensing inputs and therail-to-rail output.The combined features make the TP211x series ideallysuited for a variety of 2-cell NiCd/Alkaline battery orsingle-Li+ battery-powered portable applications. Potentialapplications include low-frequency signal conditioning,mobile accessories, wireless remote sensing, vibrationmonitors, ECGs, pulse monitors, glucose meters, smokeand fire detectors, and backup battery sensors.

Features：

• Supply Voltage: 1.8 V to 5.5 V

• Low Supply Current: 600 nA per Channel (Max)

• Offset Voltage: ±1.5 mV (Max)

• Offset Voltage Temperature Drift: 0.4 μV/℃

• Low Input Bias Current: 30 pA from −40℃ to 85℃

• Input Common-Mode Voltage Range Includes Ground

• Rail-to-Rail Input and Output

• Bandwidth: 10 kHz

• Operating Temperature Range: −40℃ to 125℃

Applications：

• Current Sensing

• Threshold Detectors/Discriminators

• Low-Power Filters

• Handsets and Mobile Accessories

• Wireless Remote Sensors, Active RFID Readers

• Gas/Oxygen/Environment Sensors

• Battery or Solar-Powered Devices

• Sensor Network Powered by Energy Scavenging