LMP2231 Datasheet | National Semiconductor

Description The LMP2231 is a single micropower precision amplifier designed for battery powered applications. The 1.8V to 5.0V guaranteed supply voltage range and quiescent power consumption of only 18 μW extend the battery life in portable battery operated systems. The LMP2231 is part of the LMP® precision amplifier family. The high impedance CMOS input makes it ideal for instrumentation and other sensor interface applications. The LMP2231 has a maximum offset of 150 µV and maximum offset voltage drift of only 0.4 µV/°C along with low bias current of only ±20 f A. These precise specifications make the LMP2231 a great choice for maintaining system accuracy and long term stability. The LMP2231 has a rail-to-rail output that swings 15 m V from the supply voltage, which increases system dynamic range. The mon mode input voltage range extends 200 m V below the negative supply, thus the LMP2231 is ideal for use in single supply applications with ground sensing. The LMP2231 is offered in 5-Pin SOT23 and 8-pin SOIC packages. The dual and quad versions of this product are also available. The dual, LMP2232 is offered in 8-pin SOIC and MSOP. The quad, LMP2234 is offered in 14-pin SOIC and TSSOP. Features (For VS = 5V, Typical unless otherwise noted) 10 µA - Supply current 1.6V to 5.5V - Operating voltage range ±0.4 µV/°C (max) - Low TCVOS ±150 µV (max) - VOS 20 f A - Input bias current 120 d B - PSRR 97 d B - CMRR 120 d B - Open loop gain 130 k Hz - Gain bandwidth product 58 V/ms - Slew rate 60 n V/√Hz - Input voltage noise, f = 1 k Hz - 40°C to 125°C - Temperature range Applications - - - - - Precision instrumentation amplifiers Battery powered medical instrumentation High Impedance Sensors Strain gauge bridge amplifier Thermocouple amplifiers Typical Application Strain Gauge Bridge Amplifier LMP® is a registered trademark of National Semiconductor Corporation. © 2008 National Semiconductor Corporation .national. LMP2231 Single Absolute Maximum Ratings (Note...