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Current Sense Amplifier

TP1514 - 4μA, 150kHz, Rail-to-Rail, Quad Op-amps


 Stable 150kHz GBWP Over Temperature Range 

 Stable 150kHz GBWP in VCM from 0-V to VDD 

 0.09V/μs Slew Rate 

 Only 4μA of Supply Current per Amplifier 

 Up to 55 Years Operation from 2 AA Alkaline-Cells 

 Unity Gain Stable for ANY CAPACITIVE Load 

 Offset Voltage: 3.0mV Maximum 

 Offset Voltage Temperature Drift: 0.6 μV/°C 

 Input Bias Current: 1pA Typical 

 High CMRR/PSRR: 110dB 

 No Phase Reversal for Overdriven Inputs 

 Beyond the Rails Input Common-Mode Range 

 Outputs Swing to within 5mV of Each Rail 

 Single +2.1V to +6.0V Supply Voltage Range 

 –40°C to 125°C Operation Range 

 ESD Rating: Robust 8KV – HBM, 2KV – CDM and 500V – MM 

 Green, Popular Type Package

Typical Application

The TP151x in Battery Monitoring Application


TP151x series are CMOS single/dual/quad op-amps with low offset, stable high frequency response, low power, low supply voltage, and rail-to-rail inputs and outputs. They incorporate 3PEAK’s proprietary and patented design techniques to achieve best in-class performance among all micro-power CMOS amplifiers in its power class. The TP151x family can be used as plug-in replacements for many commercially available op-amps to reduce power and improve input/output range and performance. 

TP151x are unity gain stable with Any Capacitive load with a constant 150kHz GBWP, 0.09V/μs slew rate while consuming only 4μA of quiescent current per amplifier. Analog trim and calibration routine reduce input offset voltage to below 3.0mV, and proprietary precision temperature compensation technique makes offset voltage temperature drift at 0.6μV/°C. Beyond the rails input and rail-to-rail output characteristics allow the full power-supply voltage to be used for signal range. 

This combination of features makes the TP151x OPA 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 op-amp. Battery Current Monitor, consumer devices, handheld instrumentation, Remote battery-powered sensors, hazard detection (for example, smoke, fire, and gas), and patient monitors can benefit from the features of the TP151x op-amps.


 Sensor Conditioning 

 Battery Current Sensing 

 IR thermometers 

 Digital Scales 

 Automotive Keyless Entry 

 Toll Booth Tags 

 Data Acquisition Equipment 

 Battery or Solar Powered Systems 

 Active Filters, ASIC Input or Output Amplifier 

 Portable Instruments 

Application Notes
3PEAK_Selection Guide