Overview
The AD620BN, produced by Analog Devices Inc., is a low-cost, high-accuracy instrumentation amplifier. It is designed to be highly versatile and efficient, requiring only one external resistor to set gains ranging from 1 to 10,000. This amplifier is available in 8-lead DIP and SOIC packaging, making it smaller than traditional discrete designs and suitable for battery-powered, portable, or remote applications. The AD620BN 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 V | ±18 V | V | |
| Input Offset Voltage | 50 μV | μV | ||
| Input Offset Drift | 0.6 μV/°C | μV/°C | ||
| Input Bias Current | 1.0 nA | nA | ||
| Common-Mode Rejection Ratio (G = 10) | 100 dB | dB | ||
| Bandwidth (G = 100) | 120 kHz | kHz | ||
| Slew Rate | 1.2 V/μs | V/μs | ||
| Settling Time to 0.01% | 15 μs | μs | ||
| Operating Temperature Range | -40°C | 85°C | °C | |
| Package Type | 8-Lead DIP, SOIC |
Key Features
- Easy to Use: Gain is set with one external resistor, allowing for a wide range of gains from 1 to 10,000.
- Low Power Consumption: Maximum supply current of 1.3 mA, making it suitable for battery-powered 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.
- Wide Power Supply Range: Operates with supply voltages from ±2.3 V to ±18 V.
- Compact Packaging: Available in 8-lead DIP and SOIC packages, which are smaller than traditional discrete designs.
Applications
- Precision Data Acquisition Systems: Ideal for use in systems such as weigh scales and transducer interfaces due to its high accuracy and low noise.
- Medical Applications: Well-suited for medical applications like ECG and noninvasive blood pressure monitors due to its low input bias current and low power consumption.
- Multiplexed Applications: Suitable for multiplexed applications with its fast settling time of 15 μs to 0.01%.
- Battery-Powered and Portable Applications: Its low power consumption makes it a good fit for battery-powered, portable, or remote applications.
Q & A
- What is the gain range of the AD620BN?
The gain range of the AD620BN is from 1 to 10,000, set by a single external resistor.
- What is the maximum supply current of the AD620BN?
The maximum supply current of the AD620BN is 1.3 mA.
- What is the input offset voltage of the AD620BN?
The input offset voltage of the AD620BN is a maximum of 50 μV.
- What is the common-mode rejection ratio (CMRR) of the AD620BN at a gain of 10?
The CMRR of the AD620BN at a gain of 10 is a minimum of 100 dB.
- What is the bandwidth of the AD620BN at a gain of 100?
The bandwidth of the AD620BN at a gain of 100 is 120 kHz.
- What is the settling time of the AD620BN to 0.01%?
The settling time of the AD620BN to 0.01% is 15 μs.
- What are the typical applications of the AD620BN?
The AD620BN is typically used in precision data acquisition systems, medical applications, and multiplexed applications.
- What are the available package types for the AD620BN?
The AD620BN is available in 8-lead DIP and SOIC packages.
- What is the operating temperature range of the AD620BN?
The operating temperature range of the AD620BN is from -40°C to 85°C.
- Is the AD620BN suitable for battery-powered applications?
Yes, the AD620BN is suitable for battery-powered applications due to its low power consumption.
