SGM8477-3B数据手册SGMICRO中文资料规格书

描述 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.

特性 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
• Available in a Green UTQFN-1.8×1.4-10L Package

应用 Application

• Industrial Equipment
• Battery-Powered Equipment
• Sensor Signal Conditioning