The AD8628ARTRL7 is a dual-channel, auto-zero amplifier from Analog Devices (ADI). It is designed to provide extremely low offset voltage and offset drift, making it ideal for precision DC applications.

Applications:

• Precision weigh scales
• Strain gauge amplifiers
• Thermocouple amplifiers
• Medical instrumentation
• High-resolution data acquisition systems

Features:

• Extremely low offset voltage: 1 μV (maximum)
• Zero drift over temperature
• Rail-to-rail input and output
• Low noise: 12 nV/√Hz
• Wide supply voltage range: 2.7 V to 5.5 V
• Gain bandwidth product: 5 MHz
• Operating temperature range: -40°C to +125°C
• Small package size: TSSOP-14

Benefits:

• Extremely high accuracy: Auto-zeroing technology eliminates offset voltage and drift errors.
• Stable performance over temperature: Minimal offset drift ensures consistent accuracy over a wide temperature range.
• Wide dynamic range: Rail-to-rail input and output maximize the usable signal range.
• Versatile: Suitable for a wide range of precision applications.
• Small size: The TSSOP-14 package allows for easy integration into space-constrained applications.

Additional Details:

The AD8628ARTRL7 utilizes auto-zeroing technology to continuously correct for offset voltage and drift, resulting in extremely high DC accuracy. Its rail-to-rail input and output characteristics allow it to operate effectively in single-supply systems. The low noise performance is essential for applications where small signals need to be accurately detected. The TSSOP-14 package provides a compact footprint for dual-channel operation. The reel packaging (RL7) is designed for automated assembly, reducing manufacturing costs. This amplifier provides the highest possible DC accuracy, making it an excellent choice for demanding applications.

The AD8628 is particularly well-suited for use in weigh scales, where small changes in weight need to be measured precisely. The auto-zeroing function ensures that the amplifier remains accurate over time and temperature variations.