Overview
The AD620BNZ is a low-cost, high-accuracy instrumentation amplifier produced by Analog Devices Inc. It is designed to be easy to use, requiring only one external resistor to set gains ranging from 1 to 10,000. This amplifier is available in 8-lead PDIP, SOIC, and CERDIP packages, making it suitable for a variety of applications, including battery-powered, portable, and remote devices. The AD620BNZ is known for its low power consumption, with a maximum supply current of 1.3 mA, and its high accuracy, featuring a maximum nonlinearity of 40 ppm, low offset voltage of 50 μV, and offset drift of 0.6 μV/°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | ±2.3 | ±18 | V | |
| Input Offset Voltage | 50 | μV | ||
| Input Offset Drift | 0.6 | μV/°C | ||
| Input Bias Current | 1.0 | nA | ||
| Common-Mode Rejection Ratio (G = 10) | 100 | dB | ||
| Input Voltage Noise at 1 kHz | 9 | nV/√Hz | ||
| Settling Time to 0.01% | 15 | μs | ||
| Bandwidth (G = 100) | 120 | kHz | ||
| Operating Temperature Range | -40 | 85 | °C | |
| Maximum Supply Current | 1.3 | mA |
Key Features
- Easy to Use: Gain set with one external resistor (gain range 1 to 10,000).
- Low Power Consumption: Maximum supply current of 1.3 mA, making it suitable for battery-powered and portable applications.
- High Accuracy: Maximum nonlinearity of 40 ppm, low offset voltage of 50 μV, and offset drift of 0.6 μV/°C.
- Low Noise: Input voltage noise of 9 nV/√Hz at 1 kHz and 0.28 μV p-p in the 0.1 Hz to 10 Hz band.
- Fast Settling Time: Settling time of 15 μs to 0.01%.
- Wide Power Supply Range: Operates with supply voltages from ±2.3 V to ±18 V.
- Compact Packaging: Available in 8-lead PDIP, SOIC, and CERDIP packages.
Applications
- Weigh Scales: Ideal for precision data acquisition systems.
- ECG and Medical Instrumentation: Suitable for medical applications such as ECG and noninvasive blood pressure monitors.
- Transducer Interface: Used in transducer interfaces due to its high accuracy and low noise.
- Data Acquisition Systems: Suitable for various data acquisition systems requiring high precision.
- Industrial Process Controls: Used in industrial process control systems.
- Battery-Powered and Portable Equipment: Ideal for battery-powered and portable devices due to its low power consumption).
Q & A
- What is the gain range of the AD620BNZ?
The gain range of the AD620BNZ is from 1 to 10,000, set by a single external resistor).
- What is the maximum supply current of the AD620BNZ?
The maximum supply current of the AD620BNZ is 1.3 mA).
- What are the typical input offset voltage and drift of the AD620BNZ?
The typical input offset voltage is 50 μV, and the offset drift is 0.6 μV/°C).
- What is the common-mode rejection ratio (CMRR) of the AD620BNZ at a gain of 10?
The CMRR at a gain of 10 is a minimum of 100 dB).
- What is the input voltage noise of the AD620BNZ at 1 kHz?
The input voltage noise at 1 kHz is 9 nV/√Hz).
- What is the settling time of the AD620BNZ to 0.01%?
The settling time to 0.01% is 15 μs).
- What are the operating temperature ranges for the AD620BNZ?
The operating temperature range is from -40°C to +85°C for the AD620BNZ).
- In what packages is the AD620BNZ available?
The AD620BNZ is available in 8-lead PDIP, SOIC, and CERDIP packages).
- What are some common applications of the AD620BNZ?
Common applications include weigh scales, ECG and medical instrumentation, transducer interfaces, data acquisition systems, and industrial process controls).
- Why is the AD620BNZ suitable for battery-powered devices?
The AD620BNZ is suitable for battery-powered devices due to its low power consumption and compact packaging).
