مدار مجتمع (آی سی) آی‌سی خطی (آنالوگ) تقویت‌کننده (آپ‌امپ)

Product Attributes

Introduction

This amplifier features ultra-low offset, drift, and bias current characteristics. The RS8547/RS8548 offer rail-to-rail input and output swing along with low-noise performance, operating from 2.5V ~ 5.5V or ±1.25V ~ ±2.75V supplies. These zero-drift amplifiers employ a circuit topology that combines low cost with high precision and low noise, requiring no external capacitors. In addition, the RS8547/RS8548 are immune to digital switching noise. With an offset voltage as low as 1μV, drift of 0.1μV/°C, and 0.1Hz ~ 10Hz noise of 0.55µVp-p, the RS8547/RS8548 are well suited for applications where error sources cannot be tolerated. These devices exhibit near-zero drift over the operating temperature range, making them highly beneficial for position and pressure sensor, medical equipment, and strain gauge amplifier applications. The rail-to-rail input and output swing capability of the RS8547/RS8548 reduces input bias complexity and maximizes SNR. The RS8547/RS8548 operate over a temperature range of -40°C ~ 125°C. The RS8547 is available in a SOT23-5 package, while the RS8548 is offered in SOP8 and MSOP8 packages.

Features

• Ultra-low noise auto-zero amplifier
• Input offset voltage: ±1µV
• Input offset drift: ±0.1μV/°C
• Rail-to-rail input and output swing
• 5V single-supply operation
• CMRR, PSRR: 125dB
• Input bias current: ±100pA
• Quiescent current: 500μA
• Settling time: ≤4µs
• No external components required
• Automotive qualified

Applications

• Automotive sensors
• Pressure and position sensors
• Strain gauge amplifiers
• Medical instrumentation
• Thermocouple amplifiers
• Precision current sensing
• Photodiode amplifiers