LMP2231 Single Micropower, 1.6V, Precision Operational Amplifier with CMOS Inputs | TI.com


Single Micropower, 1.6V, Precision Operational Amplifier with CMOS Inputs

Single Micropower, 1.6V, Precision Operational Amplifier with CMOS Inputs - LMP2231


The LMP2231 is a single micropower precision amplifier designed for battery powered applications. The 1.6V to 5.5V operating supply voltage range and quiescent power consumption of only 16 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 fA. 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 mV from the supply voltage, which increases system dynamic range. The common mode input voltage range extends 200 mV 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 SOT-23 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 VSSOP. The quad, LMP2234 is offered in 14-pin SOIC and TSSOP.


  • (For VS = 5V, TA = 25°C, Typical Unless Otherwise Noted)

  • Supply Current 10 µA
  • Operating Voltage Range 1.6V to 5.5V
  • TCVOS (LMP2231A) ±0.4 µV/°C (max)
  • TCVOS (LMP2231B) ±2.5µV/°C (max)
  • VOS ±150 µV (max)
  • Input Bias Current 20 fA
  • PSRR 120 dB
  • CMRR 97 dB
  • Open Loop Gain 120 dB
  • Gain Bandwidth Product 130 kHz
  • Slew Rate 58 V/ms
  • Input Voltage Noise, f = 1 kHz 60 nV/√Hz
  • Temperature Range –40°C to 125°C

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Parametrics Compare all products in Precision Op Amps (Vos<1mV)

Number of Channels (#)
Total Supply Voltage (Min) (+5V=5, +/-5V=10)
Total Supply Voltage (Max) (+5V=5, +/-5V=10)
GBW (Typ) (MHz)
Slew Rate (Typ) (V/us)
Vos (Offset Voltage @ 25C) (Max) (mV)
Offset Drift (Typ) (uV/C)
Iq per channel (Typ) (mA)
Vn at 1kHz (Typ) (nV/rtHz)
CMRR (Typ) (dB)
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
Input Bias Current (Max) (pA)
Output Current (Typ) (mA)
LMP2231 LMP2232 LMP2234
1     2     4    
1.6     1.6     1.6    
5.5     5.5     5    
0.13     0.13     0.13    
0.048     0.048     0.048    
In to V-
In to V-
In to V-
0.15     0.15     0.15    
0.3     0.3     0.3    
0.01     0.008     0.009    
60     60     60    
97     97     97    
Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125    
8SOIC: 29 mm2: 6 x 4.9(SOIC)
5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)    
8SOIC: 29 mm2: 6 x 4.9(SOIC)
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)    
14SOIC: 52 mm2: 6 x 8.65(SOIC)
14TSSOP: 32 mm2: 6.4 x 5(TSSOP)    
1     1     1    
22     22     22    
N/A     N/A     N/A    
CMOS     CMOS     CMOS    
    Filter Type
  Cutoff Frequency  Hz  
  Gain  dB  
  Filter Response  
  Filter Order