SG Micro Corp

SGM8957-1 1.8V, Micro-Power CMOS Zero-Drift Operational Amplifier


The single SGM8957-1 and dual SGM8957-2 CMOS operational amplifiers provide very low offset voltage and zero-drift over time and temperature.

The miniature, high-precision, low quiescent current amplifiers offer high-impedance inputs that have a wide input common mode range 100mV beyond the rails and rail-to-rail output that swings within 14mV of the rails. Single or dual supplies as low as +1.8V (±0.9V) and up to +5.5V (±2.75V) may be used.They are optimized for low voltage, single supply operation.

The SGM8957-1/-2 offer excellent CMRR without the crossover associated with traditional complementary input stages. This design results in superior performance for driving analog-to-digital converters (ADCs) without degradation of differential linearity.

The single SGM8957-1 is available in Green SOT-23-5, SC70-5 and SOIC-8 packages. The dual SGM8957-2 is available in Green SOIC-8, MSOP-8 and TDFN-3×3-8L packages. They are specified over -40 to +125 temperature range.



• Low Offset Voltage: 25μV (MAX)

• Low 0.1Hz to 10Hz Noise: 2μVP-P

• Quiescent Current: 20μA/Amplifier (TYP)

• Single Supply Operation

• Integrated RFI Filter

• Supply Voltage Range: 1.8V to 5.5V

• Rail-to-Rail Input/Output

• -40 to +125 Operating Temperature Range

• Small Packaging:

  SGM8957-1 Available in Green SOT-23-5, SC70-5

  and SOIC-8 Packages

  SGM8957-2 Available in Green SOIC-8, MSOP-8

  and TDFN-3×3-8L Packages


Transducer Applications

Temperature Measurements

Electronic Scales

Medical Instrumentation

Battery-Powered Instrument

Handheld Test Equipment


Part Number Status Package Pins Pb-Free Temp Range
SGM8957-1XN5G/TR Production SOT-23-5 5 Y -40℃ to +125℃ Samples
SGM8957-1XC5G/TR Production SC70-5 5 Y -40℃ to +125℃ Samples
SGM8957-1XS8G/TR Production SOIC-8 8 Y -40℃ to +125℃ Samples

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