GENERAL DESCRIPTION

The SGM8477-1/3 are low noise, high precision CMOS

difference amplifiers, which are designed to support

precision differential signal processing. These devices

can operate from 1.8V to 5.5V single supply or ±0.9V

to ±2.75V dual power supplies, and consume only

380μA quiescent current. The supply current of

SGM8477-3 is less than 0.5μA in shutdown mode,

when external MCU controls EN pin to logic low.

The SGM8477-1/3 feature low noise, a 10μV maximum

input offset voltage and zero-drift over time and

temperature. These devices are suitable in low voltage

and low power systems. They support rail-to-rail input

and output operation. Meanwhile, the SGM8477-1/3 fit

in tiny packages. They are designed to provide high

performance for sensing high-side and low-side current

accurately, such as single battery voltage.

The SGM8477-1/3 save external components by

integrated matched resistors in differential applications.

They have different versions for gains of 50 and 300.

The SGM8477-1 is available in Green SC70-6 and

UTQFN-1.8 × 1.4-10L packages. The SGM8477-3 is

available in a Green UTQFN-1.8×1.4-10L package.

They are all specified over -40℃ to +125℃ temperature

range.

FEATURES

 Low Input Offset Voltage: 10μV (MAX)

 Low Drift: 0.02μV/℃ (TYP)

 Low 0.1Hz to 10Hz Noise: 250nVP-P

 Low Noise: 10nV/√Hz at 1kHz

 Integrated RFI Filter

 Rail-to-Rail Input and Output

 Single-Supply Operation

 Supply Voltage Range: 1.8V to 5.5V

 Quiescent Current: 380μA (TYP)

 Shutdown Status Current: < 0.5μA

 -40℃ to +125℃ Operating Temperature Range

 Small Packaging:

SGM8477-1 is Available in Green SC70-6 and

UTQFN-1.8×1.4-10L Packages

SGM8477-3 is Available in a Green

UTQFN-1.8×1.4-10L Package

APPLICATIONS

Industrial Equipment

Battery-Powered Equipment

Sensor Signal Conditioning