AD626ARZ-REEL7

AD626ARZ-REEL7 application field and working principle

The AD626ARZ-REEL7 is a high-precision low-noise instrumentation amplifier from Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps. The device features excellent DC accuracy, low noise performance and wide supply voltage range. It is designed for general-purpose signal conditioning applications, such as low-level signals(from cell or sensors), 4-20mA current loops, etc.

Key Features of the AD626ARZ-REEL7

• Low DC Offset (+/-30uV max)
• 5mV max DC Offset Drift over Temperature & Supply Voltage Variation
• Offset Adjustment & Gain Adjustment in Large & Small Signal Ranges
• High CMRR (Up to >100dB)
• Rail-to-rail Output Swing (3V to VDD)
• Low Noise Performance (25nV/√Hz typ)
• Wide Supply Voltage Range (5V to 28V Single Supply or +-2.5V to +-14V Dual Supply)

Working Principle of AD626ARZ-REEL7

The AD626ARZ-REEL7 is a bipolar three-op amp instrumentation amplifier that operates from two supply rails, VCC and GND. The first stage consists of two differential amplifiers. The two differential amplifiers take the two input signals and amplify the differential voltage between them. The second amplifier consists of two separate current sources. The current sources are connected to the two differential amplifiers and in turn to the reference voltage. The output from the second stage amplifiers is then combined and amplified to yield the amplified output voltage.

Pin Configurations and Applications of the AD626ARZ-REEL7

The AD626ARZ-REEL7 consists of six pins and is an 8-lead SOIC package. The three amplified output pins, Out, Out 2 and Out 3, should have a common ground reference. The positive supply rail, VCC, should be connected the negative supply rail,GND, for single-supply, or both the supply rails can be connected to the respective output pins for dual supply operations. The pins 1, 6 and 7 should be connected to two externally supplied reference voltage, VREF and VREF2, while the Input Pins 2, 3 and 4 are connected to the two input signals, IN + and IN -, respectively. The device can be used in a wide range of applications such as medical instrumentation, data acquisition systems, industrial automation, automotive applications, etc.

Conclusion

The AD626ARZ-REEL7 is a low-noise, low-drift, precision instrumentation amplifier that is designed for general-purpose signal conditioning purposes. The device features On-board offset and gain adjustment, wide supply voltage range and excellent performance to meet the requirements of most applications. It can be used in a wide range of applications from medical instruments and industrial automation to automotive applications.