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LMV321A - 80μA, 1.0MHz, Micro-Power Rail-to-Rail I/O Op Amps


 Upgrade to LMV321/LMV358/LMV324 Family
 Stable 1.0MHz GBWP with Low Iof Only 80μA Typical per Amplifier
 0.7V/μs Slew Rate
 Excellent EMIRR performance: 80dB(1GHz)
 Offset Voltage Tolerance: 400μV Max.
 Offset Voltage Temperature Drift: 1uV/°C
 Input Bias Current: 1pA Typical
 High Output Current: 50mA (1.0V Drop)
 CMRR/PSRR: 95dB/90dB
 Beyond the Rails Input Common-Mode Range
 Outputs Swing to within 6mV Max of each Rail
 No Phase Reversal for Overdriven Inputs
 No Crossover Distortion
 Drives 2kΩ Resistive Loads
 Single +2.1V to +6.0V Supply Voltage Range
 –40°C to 125°C Operation Range
 ESD Rating: Robust 8KV – HBM, 2KV – CDM
 Green, Popular Type Package

Typical Application


LMV321A/358A/324A are CMOS single, dual, and 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.

The LMV321A/358A/324A are unity gain stable with Any Capacitive Load with a Constant 1.0MHz gain-bandwidth product, 0.7V/μs slew rate while consuming only 80μA of supply current per amplifier. Analog trim and calibration routine reduces input offset voltage tolerance to below 400μV. Adaptive biasing and dynamic compensation enables the LMV321A /358A/324A to achieve „THD+NOISE‟ for 1kHz and 10kHz 2VPP signal at -105dB and -90dB, respectively. 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 LMV321A /358A/324A superior among rail-to-rail input /output CMOS op amps in its power class. The LMV321A/358A/324A are 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.

The LMV321A/358A/324A can be used as cost-effective plug-in replacements for many commercially available op amps to reduce power and improve input/output range and performance.


 Active Filters, ASIC Input or Output Amplifier
 Sensor Interface
 Smoke/Gas/Environment Sensors
 Portable Instruments and Mobile Device
 Audio Output
 Battery or Solar Powered Systems
 Medical Equipment
 Piezo Electrical Transducer Amplifier

Application Notes
3PEAK Selection Guide