AD628ARZ-R7

The AD628ARZ-R7 is a precision differential amplifier offered by Analog Devices, Inc. (ADI). This device is known for its excellent DC performance and high common-mode rejection ratio (CMRR) over a wide frequency range. The AD628ARZ-R7 is designed to handle high voltages and can easily convert standard control voltages or currents used by single-supply ADCs.

Key Features and Specifications:

1. High Common-Mode Voltage Range:
   • The AD628ARZ-R7 can operate with input common-mode and differential mode voltages up to ±120V, making it suitable for high-voltage measurement applications.
2. Programmable Gain:
   • The gain of the AD628ARZ-R7 is programmable and can be adjusted over a wide range of 0.1 to 100, providing flexibility in signal amplification.
3. Excellent DC and AC Performance:
   • The device offers low offset voltage (150µV max), low offset drift, and high CMRR (75dB min at DC to 500Hz). These features contribute to its excellent DC and AC performance, minimizing errors in signal amplification.
4. Wide Supply Voltage Range:
   • The AD628ARZ-R7 can be powered from a single supply voltage of 4.5V to 36V or a dual supply voltage of ±2.25V to ±18V, providing versatility in power supply selection.
5. Broadband Feedback Loop:
   • The broadband feedback loop design minimizes distortion effects caused by capacitor charging in Σ-Δ ADCs, ensuring high-quality signal amplification.
6. Reference Pin (VREF):
   • The VREF pin provides DC offset, allowing the conversion of bipolar signals to single-ended signals.
7. Package and Temperature Range:
   • The AD628ARZ-R7 is available in an 8-pin SOIC package and operates over a standard industrial temperature range of -40°C to +85°C.
8. Applications:
   • The AD628ARZ-R7 is ideal for a variety of applications, including high-voltage current sensing, programmable logic controllers, analog input front-end signal conditioning, isolation sensor signal conditioning, power supply monitoring, electro-hydraulic controls, and motor controls.

Summary:

The AD628ARZ-R7 is a versatile and high-performance differential amplifier that combines precision amplification, high CMRR, and wide supply voltage range in a compact package. Its programmable gain, low offset voltage, and broadband feedback loop design make it suitable for a wide range of applications requiring high-quality signal amplification. With its industrial temperature range and RoHS compliance, the AD628ARZ-R7 is a reliable and sustainable choice for your designs.