1 Features
1• Quiescent Current: 650 nA
• Low Offset Voltage: ±10 μV (Maximum)
• Offset Voltage Drift: ±0.096 μV/°C (Maximum)
• 0.1-Hz to 10-Hz Noise: 3.9 μVPP
• Input Bias Current: ±7 pA
• Gain Bandwidth: 8 kHz
• Supply Voltage: 1.7 V to 3.6 V
• Rail-to-Rail Input/Output
• Industry Standard Package
– Single in 5-pin SOT-23
• EMI Hardened

2 Applications
• Battery-Powered Instruments
• Gas Detection
• Process Analytics
• Fault Monitoring
• Current Sensing
– Shunt Resistor
– Current Transformer
• Temperature Measurements
– High Impedance Thermistors
– RTD's, Thermocouples
• Strain Gauges
– Electronic Scales
– Pressure Sensors

3 Description
The LPV821 is a single-channel, nanopower, zerodrift
operational amplifier for “Always ON” sensing
applications in wireless and wired equipment where
low input offset is required. With the combination of
low initial offset, low offset drift, and 8 kHz of
bandwidth from 650 nA of quiescent current, the
LPV821 is the industry's lowest power zero-drift
amplifier that can be used for end equipment that
monitor current consumption, temperature, gas, or
strain gauges.
The LPV821 zero-drift operational amplifier uses a
proprietary auto-calibration technique to
simultaneously provide low offset voltage (10 μV,
maximum) and minimal drift over time and
temperature. In addition to having low offset and
ultra-low quiescent current, the LPV821 amplifier has
pico-amp bias currents which reduce errors
commonly introduced in applications monitoring
sensors with high output impedance and amplifier
configurations with megaohm feedback resistors.