Description

The AD620BNZ is an instrumentation operational amplifier which is commonly used in various precision data acquisition systems including weigh scales, ECG and blood pressure monitors, transducer interfaces, industrial process controls, and battery-powered or portable equipment. The amplifier has a wide power supply range from ±2.3V to ±18V and features 8-lead SOIC and DIP packaging making it smaller than most discrete designs. In addition, this operational amplifier is high accuracy, low cost with low power consumption and requires only one external resistor to set the gain of up to 10,000 with a gain accuracy of 40ppm maximum non-linearity. Hence, it is widely used in battery-powered and portable devices.

Specifications and features

• Gain set with one external resistor (Gain range 1 to 10,000)
• Wide power supply range (±2.3 V to ±18 V)
• Available in 8-lead DIP and SOIC packaging
• Low power, 1.3 mA max supply current
• Excellent DC performance (B grade), 50 μV max input offset voltage, 0.6 μV/°C max input offset drift
• 100 dB min common-mode rejection ratio (G = 10)
• Low noise, 9 nV/√Hz @ 1 kHz, input voltage noise, 0.28 μV p-p noise (0.1 Hz to 10 Hz)
• Excellent AC specifications: 120 kHz bandwidth (G = 100), 15 μs settling time to 0.01%

Application Scenarios

The AD620BNZ operational amplifier is widely used in various precision data acquisition systems including:

• Weigh scales
• ECG and medical instrumentation
• Transducer interface
• Data acquisition systems
• Industrial process controls
• Battery-powered and portable equipment

Comparison

• Wide power supply range and available in 8-lead DIP and SOIC packaging
• Low power consumption with excellent DC performance
• Low noise, low input bias current, and low offset drift
• High accuracy of 40 ppm maximum nonlinearity
• Requires only one external resistor to set gains of 1 to 10,000

• Not suitable for general-purpose applications as it is specifically designed for precise data acquisition systems
• Only has 8-lead packaging options