LMV321A Single Low-Voltage, Cost-Optimized Rail-to-Rail Output Operational Amplifier | TI.com

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Single Low-Voltage, Cost-Optimized Rail-to-Rail Output Operational Amplifier



The LMV3xxA family includes single - (LMV321A), dual - (LMV358A), and quad-channel (LMV324A) low-voltage (2.5 V to 5.5 V) operational amplifiers (op amps) with rail-to-rail output swing capabilities. These op amps provide a cost-effective solution for space-constrained applications such as large appliances, smoke detectors, and personal electronics where low-voltage operation and high capacitive-load drive are required. The capacitive-load drive of the LMV3xxA family is 500 pF, and the resistive open-loop output impedance makes stabilization easier with much higher capacitive loads. These op amps are designed specifically for low-voltage operation (2.5 V to 5.5 V) with performance specifications similar to the LMV3xx devices.

The robust design of the LMV3xxA family simplifies circuit design. The op amps feature unity-gain stability, an integrated RFI and EMI rejection filter, and no-phase reversal in overdrive conditions.

The LMV3xxA family is available in industry-standard packages such as SOIC, MSOP, SOT-23, and TSSOP packages.


  • Low input offset voltage: ±1 mV
  • Rail-to-rail output
  • Unity-gain bandwidth: 1 MHz
  • Low broadband noise: 30 nV/√Hz
  • Low input bias current: 10 pA
  • Low quiescent current: 70 µA/Ch
  • Unity-gain stable
  • Internal RFI and EMI filter
  • Operational at supply voltages as low as 2.5 V
  • Easier to stabilize with higher capacitive load due to resistive open-loop output impedance
  • Extended temperature range: –40°C to 125°C

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Part number Order 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) Rail-to-rail Vos (offset voltage @ 25 C) (Max) (mV) Iq per channel (Typ) (mA) Vn at 1 kHz (Typ) (nV/rtHz) Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) Offset drift (Typ) (uV/C) Features Input bias current (Max) (pA) CMRR (Typ) (dB) Output current (Typ) (mA) Architecture
LMV321A Order now 1     2.5     5.5     1     1.7     In to V-
4     0.08     33     Catalog     -40 to 125     SC70 | 5
SOT-23 | 5    
5SC70: 4 mm2: 2.1 x 2 (SC70 | 5)
5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)    
1     Cost Optimized
EMI Hardened
Standard Amps    
  77     40     CMOS    
LMV321 Order now 1     2.7     5.5     1     1     In to V-
7     0.13     39     Catalog     -40 to 125     SC70 | 5
SOT-23 | 5    
5SC70: 4 mm2: 2.1 x 2 (SC70 | 5)
5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)    
5     Standard Amps     250000     65     60     Bipolar