SG Micro Corp

SGM8541 1.1MHz, 46µA, Rail-to-Rail Input and Output CMOS Operational Amplifier


The SGM8541 (single), SGM8542 (dual) and SGM8544 (quad) are low cost, rail-to-rail input and output voltage feedback amplifiers. They have a wide input common mode voltage range and output voltage swing, and take the minimum operating supply voltage down to 2.1V. The maximum recommended supply voltage is 5.5V. All are specified over the extended -40 to +125 temperature range.

The SGM8541/2/4 provide 1.1MHz bandwidth at a low current consumption of 46μA per amplifier. Very low input bias currents of 0.5pA enable SGM8541/2/4 to be used for integrators, photodiode amplifiers, and piezoelectric sensors. Rail-to-rail input and output are useful to designers for buffering ASIC in single-supply systems.

Applications for these amplifiers include safety monitoring, portable equipment, battery and power supply control, and signal conditioning and interfacing for transducers in very low power systems.

The SGM8541 single is available in the Green SOT-23-5, SC70-5 and SOIC-8 packages. The SGM8542 dual comes in the Green SOIC-8, MSOP-8 and TSSOP-8 packages. The quad SGM8544 is offered in Green TSSOP-14 and SOIC-14 packages.



• Low Cost 
• Rail-to-Rail Input and Output 
   0.8mV Typical V
• Unity Gain Stable 
• Gain-Bandwidth Product: 1.1MHz 
• Very Low Input Bias Current: 0.5pA 
• Supply Voltage Range: 2.1V to 5.5V 
• Input Voltage Range: 
   -0.1V to +5.6V with V
S = 5.5V 
• Low Supply Current: 46μA/Amplifier 
• Small Packaging 
   SGM8541 Available in SOIC-8, SC70-5 and 
   SGM8542 Available in SOIC-8, MSOP-8 and TSSOP-8 

   SGM8544 Available in SOIC-14 and TSSOP-14


ASIC Input or Output Amplifier          

Sensor Interface                  

Piezo Electric Transducer Amplifier     

Medical Instrumentation                    

Mobile Communication         

Audio Output                   

Portable Systems

Smoke Detectors                    

Mobile Telephone                   

Notebook PC                        

PCMCIA Cards                                

Battery-Powered Equipment


Part Number Status Package Pins Pb-Free Temp Range
SGM8541XN5/TR Production SOT-23-5 5 Y -40℃ to +125℃ Samples
SGM8541XS/TR Production SOIC-8 8 Y -40℃ to +125℃ Samples
SGM8541XC5/TR Production SC70-5 5 Y -40℃ to +125℃ Samples

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